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From: "Marc-F. Lucca-Daniau" <mfld.fr@gmail.com>
To: Paul Osmialowski <pawelo@king.net.pl>
Cc: ELKS <Linux-8086@Vger.Kernel.Org>
Subject: Re: Cannot boot the real thing from HDD
Date: Mon, 17 Feb 2020 22:24:07 +0100	[thread overview]
Message-ID: <c6cd0288-5710-51a9-3b49-0dc8b8ff38bc@gmail.com> (raw)
In-Reply-To: <alpine.LNX.2.21.1.2002122326370.561@localhost.localdomain>

Got the same problem as you while trying to use the HD image, with wrong 
partition detection when no MBR. Working on it...

I am just wondering why you try to mount the rootfs partition as you 
booted on it and it should be mounted. Did I miss something in your 
statement ?

MFLD


Le 12/02/2020 à 23:31, Paul Osmialowski a écrit :
> Yeah, it is described there indeed.
>
> I tried todays master. It does boot from CF card (MINIX HD image), so the
> original issue is now fixed. Yet still problem with lack of ability to
> mount rootfs from the same CF card and wrong listing of partitions on a
> card that contains no partitions (just a boot sector and a MINIX rootfs
> filesystem) remains and I guess deserved new (critical?) ticket as it
> limits usability of ELKS severely.
>
> Thanks,
> Paul
>
> On Wed, 12 Feb 2020, Marc-François Lucca-Daniau wrote:
>
>> Please read the updated 'README.md' :-)
>> MFLD
>>
>> Le mer. 12 févr. 2020 22:10, Paul Osmialowski <pawelo@king.net.pl> a écrit :
>>        Just a quick question. If there's no tools/env.sh, how one does 'make
>>        clean' now?
>>
>>        On Wed, 12 Feb 2020, Marc-F. Lucca-Daniau wrote:
>>
>>        > Hello Paul,
>>        >
>>        > Regression should be fixed now by latest commits.
>>        >
>>        > I selected CONFIG_IMG_HD, set CHS to 80/2/18 and size to 1440 blocks (to mimic
>>        > a floppy).
>>        >
>>        > After modifying 'qemu.sh' to boot on 'image/hd.bin', got the ELKS login
>>        > prompt.
>>        >
>>        > So closing the issue, unless you still have the problem.
>>        >
>>        > Thanks,
>>        >
>>        > MFLD
>>        >
>>        >
>>        > Le 11/02/2020 ? 21:38, Marc-F. Lucca-Daniau a écrit :
>>        > > Hello Paul,
>>        > >
>>        > > Yes, confirmed, a recent commit on the boot sector missed the CONFIG_IMG_HD
>>        > > case.
>>        > >
>>        > > Tracked by : https://github.com/elks-org/elks/issues/323
>>        > >
>>        > > It again shows that we REALLY need more automatic testing in the CI !
>>        > >
>>        > > MFLD
>>        > >
>>        > >
>>        > > Le 11/02/2020 ? 00:38, Paul Osmialowski a écrit :
>>        > > > Hi Marc,
>>        > > >
>>        > > > I'm observing some regression with today's changes on git master. Despite
>>        > > > selecting MINIX boot image, -DBOOT_FAT is still present in build log
>>        > > > (seems -UBOOT_FAT is not propagated properly):
>>        > > >
>>        > > > make[2]: Entering directory '/home/pawelo/elks.git/elkscmd/bootblocks'
>>        > > > ia16-elf-gcc -I /home/pawelo/elks.git/include -E -o boot_sect.tmp
>>        > > > boot_sect.S
>>        > > > ia16-elf-gcc -I /home/pawelo/elks.git/include -E -UBOOT_FAT -o
>>        > > > boot_sect.tmp boot_sect.S
>>        > > > ia16-elf-as  -o boot_sect.o boot_sect.tmp
>>        > > > rm -f boot_sect.tmp
>>        > > > ia16-elf-gcc -Wall -Os -mregparmcall -fno-toplevel-reorder -fno-inline
>>        > > > -mcmodel=tiny -mno-segment-relocation-stuff -ffreestanding -mtune=i8086 -I
>>        > > > /home/pawelo/elks.git/include   -c -o boot_minix.o boot_minix.c
>>        > > > ia16-elf-ld -T /home/pawelo/elks.git/elks/elks-raw.ld -M -o minix.bin
>>        > > > boot_sect.o boot_minix.o > minix.map
>>        > > > ia16-elf-gcc -I /home/pawelo/elks.git/include -E -o boot_probe.tmp
>>        > > > boot_probe.S
>>        > > > ia16-elf-as  -oboot_probe.o boot_probe.tmp
>>        > > > rm -f boot_probe.tmp
>>        > > > ia16-elf-ld -T /home/pawelo/elks.git/elks/elks-raw.ld -M -o probe.bin
>>        > > > boot_sect.o boot_probe.o > probe.map
>>        > > > ia16-elf-gcc -I /home/pawelo/elks.git/include -E -DBOOT_FAT -o
>>        > > > boot_sect_fat.tmp boot_sect.S
>>        > > > ia16-elf-as  -o boot_sect_fat.o boot_sect_fat.tmp
>>        > > > boot_sect.S: Assembler messages:
>>        > > > boot_sect.S:41: Error: Unknown disk medium!
>>        > > > make[2]: *** [Makefile:42: boot_sect_fat.o] Error 1
>>        > > > make[2]: Leaving directory '/home/pawelo/elks.git/elkscmd/bootblocks'
>>        > > > make[1]: *** [Makefile:126: all] Error 1
>>        > > > make[1]: Leaving directory '/home/pawelo/elks.git/elkscmd'
>>        > > > make: *** [Makefile:37: all] Error 2
>>        > > > Build script has terminated with error 5
>>        > > >
>>        > > >
>>        > > > On Sat, 8 Feb 2020, Paul Osmialowski wrote:
>>        > > >
>>        > > > > Things changed overnight on the ELKS repo and now my Amstrad PC 2086
>>        > > > > boots
>>        > > > > ELKS from 32MB CF card!
>>        > > > >
>>        > > > > There are some shortcomings though:
>>        > > > >
>>        > > > > 1. Bootable MINIX image does not contain partition table. There's
>>        > > > > nothing
>>        > > > > wrong about that, yet it makes ELKS's Partition Check routine lost a
>>        > > > > bit.
>>        > > > > Contrary to this, the Desktop tools for managing external storage in my
>>        > > > > Desktop Linux environment somehow are able to spot that and do mount
>>        > > > > MINIX
>>        > > > > fs on /dev/sdc when asked, not on /dev/sdc1 or anything else (note that
>>        > > > > fdisk /dev/sdc shows rubbish like non-existing /dev/sdc4 partition of
>>        > > > > exotic type and size). ELKS's Partition Check also shows rubbush bda4
>>        > > > > partition of a very wrong size.
>>        > > > >
>>        > > > > 2. Root fs mount fails asking me to insert rootfs floppy:
>>        > > > >
>>        > > > > FAT: can't read super
>>        > > > > VFS: Insert root floppy and press ENTER
>>        > > > >
>>        > > > > Fortunately, I still have one. Yet during that, good old problem with
>>        > > > > mounting on-card fs appeared again:
>>        > > > >
>>        > > > > minix: unable to read sb
>>        > > > > mount failed: Invalid argument
>>        > > > >
>>        > > > > I suspect it tried to mount non-existing /dev/bda1 or wrong /dev/bda4
>>        > > > > partition as suggested by misleading Partition Check
>>        > > > >
>>        > > > > When I finally reached the shell, I managed to mount MINIX fs anyway,
>>        > > > > just
>>        > > > > by doing:
>>        > > > >
>>        > > > > mount /dev/bda /mnt
>>        > > > >
>>        > > > > and it just worked, all the files and directories were there!
>>        > > > >
>>        > > > > Cheers,
>>        > > > > Paul
>>        > > > >
>>        > > > > On Thu, 6 Feb 2020, Paul Osmialowski wrote:
>>        > > > >
>>        > > > > > Some more update:
>>        > > > > >
>>        > > > > > I've compiled FAT support into kernel. Then I've also built HD image
>>        > > > > > with
>>        > > > > > FAT filesystem (non-bootable), in facts, what have been built was not
>>        > > > > > binary image, it was rather rootfs in the 'target' directory. I've
>>        > > > > > created
>>        > > > > > partition table on the 32MB CF card with DOS partition and formated
>>        > > > > > the
>>        > > > > > partition with FAT16 filesystem (all using FreeDOS booted from
>>        > > > > > floppy).
>>        > > > > > Then I've rebooted the machine with ELKS bootable floppy and this
>>        > > > > > time...
>>        > > > > > the rootfs was mounted by init into '/mnt' mountpoint. So the HDD
>>        > > > > > support
>>        > > > > > isn't that entirely bad in ELKS and we're nearly there! What I also
>>        > > > > > immediately noticed is that this system lacks 'chroot' command...
>>        > > > > >
>>        > > > > > Cheers,
>>        > > > > > Paul
>>        > > > > >
>>        > > > > > On Thu, 6 Feb 2020, Paul Osmialowski wrote:
>>        > > > > >
>>        > > > > > > Hi Marc,
>>        > > > > > >
>>        > > > > > > Now it prints:
>>        > > > > > >
>>        > > > > > > C=0x3C  H=0x10  S=0x3F
>>        > > > > > >
>>        > > > > > > Following this, I've tried to build HD boot image with 63 sectors,
>>        > > > > > > 16
>>        > > > > > > heads and 60 tracks (cylinders), but it still dies at '....4!'.
>>        > > > > > >
>>        > > > > > > Also, when I booted ELKS from floppy again, I noticed it tried to
>>        > > > > > > mount
>>        > > > > > > filesystem on the card with the image mentioned above that I left in
>>        > > > > > > the
>>        > > > > > > CF adapter. It failed eventually as such:
>>        > > > > > >
>>        > > > > > > Mounting FAT filesystem: hd: error: AX=0x04
>>        > > > > > > BIOSHD: I/O error
>>        > > > > > > dev 301, sector 2
>>        > > > > > > minix: unable to read sb
>>        > > > > > > mount failed: Invalid argument
>>        > > > > > >
>>        > > > > > > This 'Mounting FAT filesystem' message is kinda misleading: I didn't
>>        > > > > > > compile FAT support into the system, and the image on CF card has
>>        > > > > > > MINIX
>>        > > > > > > filesystem installed.
>>        > > > > > >
>>        > > > > > > Cheers,
>>        > > > > > > Paul
>>        > > > > > >
>>        > > > > > > On Wed, 5 Feb 2020, Marc-F. Lucca-Daniau wrote:
>>        > > > > > >
>>        > > > > > > > Yep, hex error fixed in latest commit:
>>        > > > > > > >
>>        > > > > > > > https://github.com/elks-org/elks/commit/6332929104591ecbd62f18757a76506938cf96ce
>>        > > > > > > >
>>        > > > > > > > MFLD
>>        > > > > > > >
>>        > > > > > > >
>>        > > > > > > > Le 03/02/2020 ? 23:05, Paul Osmialowski a écrit :
>>        > > > > > > > > probe.bin prints:
>>        > > > > > > > >
>>        > > > > > > > > Boot sector
>>        > > > > > > > > C=0x3D  H=0x10  S=0x3G
>>        > > > > > > > > Press key
>>        > > > > > > > >
>>        > > > > > > > > 0x3G is a rather strange hex value... I assume off-by-one error
>>        > > > > > > > > while
>>        > > > > > > > > doing 'A' + h.
>>        > > > > > > > >
>>        > > > > > > > > I looked at what fdisk on different systems prints about this
>>        > > > > > > > > 32MB CF
>>        > > > > > > > > card.
>>        > > > > > > > >
>>        > > > > > > > > On Linux (fdisk -c=dos /dev/sdX): cyls: 1024, heads: 1, sects:
>>        > > > > > > > > 61
>>        > > > > > > > > On Linux (fdisk -c=dos on FreeDOS image): cyls: 3, heads: 16,
>>        > > > > > > > > sects: 63
>>        > > > > > > > > On FreeDOS (fdisk /info /tech): TC: 61  TH: 15  TS: 63
>>        > > > > > > > >
>>        > > > > > > > > I've tried all of those values, with the same effect (....4!).
>>        > > > > > > > >
>>        > > > > > > > > Also I think the name of config option in kernel configuration
>>        > > > > > > > > is
>>        > > > > > > > > misleading. Tracks refers to number of tracks per cylinder which
>>        > > > > > > > > is heads
>>        > > > > > > > > * sectors. I assume what this option really expects is
>>        > > > > > > > > 'cylinders', and
>>        > > > > > > > > IMO should be named that way.
>>        > > > > > > > >
>>        > > > > > > > > There's a chance that the problem with FDD is not with the drive
>>        > > > > > > > > itself.
>>        > > > > > > > > I'm waiting for delivery of used 3.5'' 720k DD floppy disks to
>>        > > > > > > > > verify this
>>        > > > > > > > > suspicion, should arrive in a week.
>>        > > > > > > > >
>>        > > > > > > > > Thanks,
>>        > > > > > > > > Paul
>>        > > > > > > > >
>>        > > > > > > > > On Mon, 3 Feb 2020, Marc-F. Lucca-Daniau wrote:
>>        > > > > > > > >
>>        > > > > > > > > > Hello Paul,
>>        > > > > > > > > >
>>        > > > > > > > > > It is really too bad that you don't have any working FDD on
>>        > > > > > > > > > your Amstrad
>>        > > > > > > > > > PC,
>>        > > > > > > > > > so that we could test if the latest fixes solve the "cannot
>>        > > > > > > > > > boot the real
>>        > > > > > > > > > thing from floppy" problem...
>>        > > > > > > > > >
>>        > > > > > > > > > It would help a lot before attacking the HDD problem.
>>        > > > > > > > > >
>>        > > > > > > > > > Anyway... there is a new payload in the 'bootblocks' folder,
>>        > > > > > > > > > named
>>        > > > > > > > > > 'probe.bin', that queries the BIOS for the actual geometry of
>>        > > > > > > > > > the HDD.
>>        > > > > > > > > > Could
>>        > > > > > > > > > you please DD that payload to your CF first sectors (2) and
>>        > > > > > > > > > give us what
>>        > > > > > > > > > is
>>        > > > > > > > > > displayed on boot ?
>>        > > > > > > > > >
>>        > > > > > > > > > Thanks,
>>        > > > > > > > > >
>>        > > > > > > > > > MFLD
>>        > > > > > > > > >
>>        > > > > > > > > >
>>        > > > > > > > > > Le 03/02/2020 ? 17:59, Paul Osmialowski a écrit :
>>        > > > > > > > > > > Hi Marc,
>>        > > > > > > > > > >
>>        > > > > > > > > > > I gave it a go, it now looks differend, yet it still fails
>>        > > > > > > > > > > at the end:
>>        > > > > > > > > > >
>>        > > > > > > > > > > Boot sector
>>        > > > > > > > > > > ...Linux found
>>        > > > > > > > > > > ..........................................4!
>>        > > > > > > > > > > Press key
>>        > > > > > > > > > >
>>        > > > > > > > > > > (number of dots in the longest line may differ from actual)
>>        > > > > > > > > > >
>>        > > > > > > > > > > According to boot_err.h file, the error code 4 means
>>        > > > > > > > > > > ERR_BAD_SYSTEM
>>        > > > > > > > > > >
>>        > > > > > > > > > > I looked into hd.bin image. It does seem to have correct
>>        > > > > > > > > > > minix fs with
>>        > > > > > > > > > > /linux file of size 49778 bytes and /bin/init (instead of
>>        > > > > > > > > > > /sbin/init)
>>        > > > > > > > > > > among other files and directories.
>>        > > > > > > > > > >
>>        > > > > > > > > > > Good news with Amstrad PC 2086, I managed to fix its
>>        > > > > > > > > > > keyboard, it just
>>        > > > > > > > > > > needed a good scrub. Now I can boot FreeDOS from a CF card
>>        > > > > > > > > > > and start
>>        > > > > > > > > > > things like OpenGEM and alike.
>>        > > > > > > > > > >
>>        > > > > > > > > > > Cheers,
>>        > > > > > > > > > > Paul
>>        > > > > > > > > > >
>>        > > > > > > > > > > On Sat, 1 Feb 2020, Marc-F. Lucca-Daniau wrote:
>>        > > > > > > > > > >
>>        > > > > > > > > > > > Hello Paul,
>>        > > > > > > > > > > >
>>        > > > > > > > > > > > The problem should be solved now (at least for the
>>        > > > > > > > > > > > floppy).
>>        > > > > > > > > > > >
>>        > > > > > > > > > > > Details in the issues listed below (253 and 288).
>>        > > > > > > > > > > >
>>        > > > > > > > > > > > MFLD
>>        > > > > > > > > > > >
>>        > > > > > > > > > > >
>>        > > > > > > > > > > > Le 30/01/2020 ? 22:43, Marc-F. Lucca-Daniau a écrit :
>>        > > > > > > > > > > > > Hello Paul,
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > Thanks for the report, that time with the error code 3.
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > Your problem is still tracked by:
>>        > > > > > > > > > > > > https://github.com/elks-org/elks/issues/253
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > It looks like you are facing the same problem as another
>>        > > > > > > > > > > > > user:
>>        > > > > > > > > > > > > https://github.com/elks-org/elks/issues/288
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > We are now quite sure there is a somewhere a bug in the
>>        > > > > > > > > > > > > new
>>        > > > > > > > > > > > > `disk_read`
>>        > > > > > > > > > > > > function, that fires only on real HW, not in QEmu.
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > Investigation is still ongoing... stay tuned !
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > MFLD
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > >
>>        > > > > > > > > > > > > Le 30/01/2020 ? 20:51, Paul Osmialowski a écrit :
>>        > > > > > > > > > > > > > Hi Marc,
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > As I mentioned earlier, I'm again away from my old
>>        > > > > > > > > > > > > > home and won't
>>        > > > > > > > > > > > > > be
>>        > > > > > > > > > > > > > there
>>        > > > > > > > > > > > > > before April (to make tests on my old XT-Turbo). Yet I
>>        > > > > > > > > > > > > > managed to
>>        > > > > > > > > > > > > > buy
>>        > > > > > > > > > > > > > on
>>        > > > > > > > > > > > > > e-bay an Amstrad PC2086 here, so in theory, I should
>>        > > > > > > > > > > > > > be able to
>>        > > > > > > > > > > > > > continue
>>        > > > > > > > > > > > > > from here too. The machine itself came in a very bad
>>        > > > > > > > > > > > > > shape, the
>>        > > > > > > > > > > > > > keyboard
>>        > > > > > > > > > > > > > is broken, FDD and original MFM HDD are also dead.
>>        > > > > > > > > > > > > > Fortunately,
>>        > > > > > > > > > > > > > I've
>>        > > > > > > > > > > > > > got
>>        > > > > > > > > > > > > > one more XT-IDE 8-bit ISA card and an CF-IDE adapter.
>>        > > > > > > > > > > > > > It's the
>>        > > > > > > > > > > > > > only
>>        > > > > > > > > > > > > > workable boot device this machine currently has.
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > I've compiled ELKS's recent git master and copied boot
>>        > > > > > > > > > > > > > image to
>>        > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > 32MB
>>        > > > > > > > > > > > > > CF card. While configuring the build, some progess
>>        > > > > > > > > > > > > > I've noticed in
>>        > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > way
>>        > > > > > > > > > > > > > HD image is configured (CHS geometry can now be given
>>        > > > > > > > > > > > > > through
>>        > > > > > > > > > > > > > menuconfig).
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > I tried to boot the image, but all I could see was:
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > MINIX boot
>>        > > > > > > > > > > > > > 3!
>>        > > > > > > > > > > > > > Press key.
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > Some specs of this machine:
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > - CPU: AMD 8086
>>        > > > > > > > > > > > > > - RAM: 640kB
>>        > > > > > > > > > > > > > - Video: Onboard VGA Paradise
>>        > > > > > > > > > > > > > - Serial port: Onboard Amstrad 40049 inherited from
>>        > > > > > > > > > > > > > Amstrad
>>        > > > > > > > > > > > > > Portable
>>        > > > > > > > > > > > > > PC
>>        > > > > > > > > > > > > > line (I hope it's compatible with 8250, not sure where
>>        > > > > > > > > > > > > > to find
>>        > > > > > > > > > > > > > more
>>        > > > > > > > > > > > > > info
>>        > > > > > > > > > > > > > about it)
>>        > > > > > > > > > > > > > - Amstrad-specific keyboard and mouse (not compatible
>>        > > > > > > > > > > > > > with
>>        > > > > > > > > > > > > > anything
>>        > > > > > > > > > > > > > else
>>        > > > > > > > > > > > > > and not repairable when broken)
>>        > > > > > > > > > > > > > - Onboard Zilog 765 floppy disk controller
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > I've removed MFM HDD controller (8-bit ISA card), as
>>        > > > > > > > > > > > > > there's no
>>        > > > > > > > > > > > > > use
>>        > > > > > > > > > > > > > for
>>        > > > > > > > > > > > > > it.
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > Cheers,
>>        > > > > > > > > > > > > > Paul
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > On Fri, 24 Jan 2020, Marc-F. Lucca-Daniau wrote:
>>        > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > Hello Paul,
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > I added some error checking with very simple traces
>>        > > > > > > > > > > > > > > in my latest
>>        > > > > > > > > > > > > > > commit:
>>        > > > > > > > > > > > > > > https://github.com/jbruchon/elks/commit/63647a9a37ec3c5751fb2adc4ddad368e18ba7c5
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > It would be nice if you (or someone else on that
>>        > > > > > > > > > > > > > > mailing list)
>>        > > > > > > > > > > > > > > could
>>        > > > > > > > > > > > > > > try
>>        > > > > > > > > > > > > > > to
>>        > > > > > > > > > > > > > > boot again from a floppy disk and report the traces
>>        > > > > > > > > > > > > > > in case of
>>        > > > > > > > > > > > > > > any
>>        > > > > > > > > > > > > > > failure.
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > Also, I added some options to describe the HD
>>        > > > > > > > > > > > > > > geometry in the
>>        > > > > > > > > > > > > > > configuration,
>>        > > > > > > > > > > > > > > not to have to hack that part of code:
>>        > > > > > > > > > > > > > > https://github.com/jbruchon/elks/commit/28d5f0ae66fd62bb7e25770e23d3c402cd301d76
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > And last but not least, the boot block now reuses
>>        > > > > > > > > > > > > > > the driver
>>        > > > > > > > > > > > > > > number
>>        > > > > > > > > > > > > > > as
>>        > > > > > > > > > > > > > > provided by the BIOS, again to avoid forcing it in
>>        > > > > > > > > > > > > > > the code:
>>        > > > > > > > > > > > > > > https://github.com/jbruchon/elks/commit/9dbcd5ace60dc19f1bad24e34f1a3dd8793bcfcf
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > MFLD
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > Le 22/12/2019 ? 11:51, Marc-F. Lucca-Daniau a
>>        > > > > > > > > > > > > > > écrit :
>>        > > > > > > > > > > > > > > > Hello Paul,
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > I forced the build of minix.bin to 8086 model
>>        > > > > > > > > > > > > > > > (-mtune 8086),
>>        > > > > > > > > > > > > > > > but
>>        > > > > > > > > > > > > > > > no
>>        > > > > > > > > > > > > > > > change
>>        > > > > > > > > > > > > > > > in the binary, so not related to possible
>>        > > > > > > > > > > > > > > > 80186/286
>>        > > > > > > > > > > > > > > > instructions.
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > Also, you memory is largely enough for the
>>        > > > > > > > > > > > > > > > relocation of the
>>        > > > > > > > > > > > > > > > code,
>>        > > > > > > > > > > > > > > > so
>>        > > > > > > > > > > > > > > > not
>>        > > > > > > > > > > > > > > > related either (it could fail for memory < 128
>>        > > > > > > > > > > > > > > > Kb).
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > I am currently suspecting the INT 13h in
>>        > > > > > > > > > > > > > > > disk_read() to fail
>>        > > > > > > > > > > > > > > > at
>>        > > > > > > > > > > > > > > > one
>>        > > > > > > > > > > > > > > > moment,
>>        > > > > > > > > > > > > > > > but as there is no error checking in load_zone()
>>        > > > > > > > > > > > > > > > and in
>>        > > > > > > > > > > > > > > > load_file() in
>>        > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > current version, it could be a silent error.
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > I am going to try to add that error checking in
>>        > > > > > > > > > > > > > > > the remaining
>>        > > > > > > > > > > > > > > > space of
>>        > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > second sector.
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > Stay tuned...
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > MFLD
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > Le 18/12/2019 ? 23:51, Paul Osmialowski a écrit :
>>        > > > > > > > > > > > > > > > > Some more info:
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > CPU: 8088, no FPU installed (empty socket)
>>        > > > > > > > > > > > > > > > > MEM: 640kB, no expansions
>>        > > > > > > > > > > > > > > > > FDD: standard 765-based FDD controller on 8-bit
>>        > > > > > > > > > > > > > > > > ISA card
>>        > > > > > > > > > > > > > > > > HDD: XT-CF IDE controller on 8-bit ISA card
>>        > > > > > > > > > > > > > > > > bought here:
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > https://www.lo-tech.co.uk/wiki/Lo-tech_ISA_CompactFlash_Adapter_revision_2b
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > with BIOS obtained from here:
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > https://code.google.com/archive/p/xtideuniversalbios
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > On Wed, 18 Dec 2019, Paul Osmialowski wrote:
>>        > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > Hi Marc,
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > Thanks for your quick reply. This machine is
>>        > > > > > > > > > > > > > > > > > NOT an
>>        > > > > > > > > > > > > > > > > > original
>>        > > > > > > > > > > > > > > > > > IBM
>>        > > > > > > > > > > > > > > > > > PC/XT,
>>        > > > > > > > > > > > > > > > > > it
>>        > > > > > > > > > > > > > > > > > is a cheap Taiwan made clone from 1986, very
>>        > > > > > > > > > > > > > > > > > popular Turbo
>>        > > > > > > > > > > > > > > > > > XT.
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > Using simple Willem programmer I managed to
>>        > > > > > > > > > > > > > > > > > dump its BIOS
>>        > > > > > > > > > > > > > > > > > to a
>>        > > > > > > > > > > > > > > > > > file
>>        > > > > > > > > > > > > > > > > > (attached xt-rom.BIN file, 8192 bytes). When
>>        > > > > > > > > > > > > > > > > > powered on it
>>        > > > > > > > > > > > > > > > > > prints:
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > T U R B O - XT 1986
>>        > > > > > > > > > > > > > > > > > Speed 4.77/8.00MHz Version 3.10
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > Thanks,
>>        > > > > > > > > > > > > > > > > > Paul
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > On Wed, 18 Dec 2019, Marc-François
>>        > > > > > > > > > > > > > > > > > Lucca-Daniau wrote:
>>        > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > Hello Paul,
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > I walked into the dump of your CF image, and
>>        > > > > > > > > > > > > > > > > > > everything
>>        > > > > > > > > > > > > > > > > > > looks
>>        > > > > > > > > > > > > > > > > > > correct
>>        > > > > > > > > > > > > > > > > > > : Minix boot blocks, geometry constants,
>>        > > > > > > > > > > > > > > > > > > filesystem,
>>        > > > > > > > > > > > > > > > > > > root
>>        > > > > > > > > > > > > > > > > > > directory
>>        > > > > > > > > > > > > > > > > > > and kernel image.
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > Could you please tell me the size of your
>>        > > > > > > > > > > > > > > > > > > low memory,
>>        > > > > > > > > > > > > > > > > > > and
>>        > > > > > > > > > > > > > > > > > > confirm the
>>        > > > > > > > > > > > > > > > > > > processor is a 8088/86, not a 80186/286 ?
>>        > > > > > > > > > > > > > > > > > > After reading
>>        > > > > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > > > > code
>>        > > > > > > > > > > > > > > > > > > of
>>        > > > > > > > > > > > > > > > > > > the boot blocks again, I found two potential
>>        > > > > > > > > > > > > > > > > > > failures
>>        > > > > > > > > > > > > > > > > > > related.
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > Also, if you could tell me the BIOS version
>>        > > > > > > > > > > > > > > > > > > & date, for
>>        > > > > > > > > > > > > > > > > > > me
>>        > > > > > > > > > > > > > > > > > > to
>>        > > > > > > > > > > > > > > > > > > have a
>>        > > > > > > > > > > > > > > > > > > look in the IBM manual ?
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > Thanks,
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > MFLD
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > > Le mar. 17 déc. 2019 23:21, Paul Osmialowski
>>        > > > > > > > > > > > > > > > > > > <pawelo@king.net.pl> a
>>        > > > > > > > > > > > > > > > > > > écrit :
>>        > > > > > > > > > > > > > > > > > >            Hi Marc,
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            The bzipped file is so small I'd
>>        > > > > > > > > > > > > > > > > > > try to attach
>>        > > > > > > > > > > > > > > > > > > it
>>        > > > > > > > > > > > > > > > > > > to
>>        > > > > > > > > > > > > > > > > > > this
>>        > > > > > > > > > > > > > > > > > > message.
>>        > > > > > > > > > > > > > > > > > >            The other attachment is the diff
>>        > > > > > > > > > > > > > > > > > > of all of my
>>        > > > > > > > > > > > > > > > > > > changes.
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            I must admit, I was looking into
>>        > > > > > > > > > > > > > > > > > > wrong places.
>>        > > > > > > > > > > > > > > > > > > As I
>>        > > > > > > > > > > > > > > > > > > mounted
>>        > > > > > > > > > > > > > > > > > > this image, it
>>        > > > > > > > > > > > > > > > > > >            indeed contains MINIX filesystem
>>        > > > > > > > > > > > > > > > > > > with /linux
>>        > > > > > > > > > > > > > > > > > > file
>>        > > > > > > > > > > > > > > > > > > in it,
>>        > > > > > > > > > > > > > > > > > > and
>>        > > > > > > > > > > > > > > > > > > that file
>>        > > > > > > > > > > > > > > > > > >            indeed has magic string "ELKS" at
>>        > > > > > > > > > > > > > > > > > > offset
>>        > > > > > > > > > > > > > > > > > > 0x1E6. So
>>        > > > > > > > > > > > > > > > > > > I
>>        > > > > > > > > > > > > > > > > > > suspect,
>>        > > > > > > > > > > > > > > > > > > load_zone()
>>        > > > > > > > > > > > > > > > > > >            does something wrong.
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            Note that I wasn't able to boot
>>        > > > > > > > > > > > > > > > > > > from 360k
>>        > > > > > > > > > > > > > > > > > > floppy
>>        > > > > > > > > > > > > > > > > > > either
>>        > > > > > > > > > > > > > > > > > > (with
>>        > > > > > > > > > > > > > > > > > > the same
>>        > > > > > > > > > > > > > > > > > >            outcome!), despite all the
>>        > > > > > > > > > > > > > > > > > > changes as in the
>>        > > > > > > > > > > > > > > > > > > patch.
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            Cheers,
>>        > > > > > > > > > > > > > > > > > >            Paul
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            On Tue, 17 Dec 2019, Marc-F.
>>        > > > > > > > > > > > > > > > > > > Lucca-Daniau
>>        > > > > > > > > > > > > > > > > > > wrote:
>>        > > > > > > > > > > > > > > > > > >
>>        > > > > > > > > > > > > > > > > > >            > Hello Paul,
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > I understand your mail on
>>        > > > > > > > > > > > > > > > > > > dec-16, but I
>>        > > > > > > > > > > > > > > > > > > don't the
>>        > > > > > > > > > > > > > > > > > > latest
>>        > > > > > > > > > > > > > > > > > > today.
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * minix_second.c loads the root
>>        > > > > > > > > > > > > > > > > > > directory,
>>        > > > > > > > > > > > > > > > > > > then
>>        > > > > > > > > > > > > > > > > > > finds
>>        > > > > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > > > > "/linux" file in it,
>>        > > > > > > > > > > > > > > > > > >            > as you got the "Linux found!"
>>        > > > > > > > > > > > > > > > > > > trace.
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * the "linux" file is supposed
>>        > > > > > > > > > > > > > > > > > > to be the
>>        > > > > > > > > > > > > > > > > > > /elks/arch/i86/boot/Image (see
>>        > > > > > > > > > > > > > > > > > >            > image/Makefile):
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > sudo install
>>        > > > > > > > > > > > > > > > > > > $(ELKS_DIR)/arch/i86/boot/Image
>>        > > > > > > > > > > > > > > > > > > $(TARGET_MNT)/linux
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * that file concatenates 3
>>        > > > > > > > > > > > > > > > > > > other files :
>>        > > > > > > > > > > > > > > > > > > bootsect,
>>        > > > > > > > > > > > > > > > > > > setup and
>>        > > > > > > > > > > > > > > > > > > system (through
>>        > > > > > > > > > > > > > > > > > >            > the /elks/arch/i86/tools
>>        > > > > > > > > > > > > > > > > > > utility)
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * run_prog() checks that the
>>        > > > > > > > > > > > > > > > > > > "bootsect" file
>>        > > > > > > > > > > > > > > > > > > contains
>>        > > > > > > > > > > > > > > > > > > "ELKS"
>>        > > > > > > > > > > > > > > > > > > at offset 1E6h:
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > minix_first.S:
>>        > > > > > > > > > > > > > > > > > >            >     mov 0x01E6,%ax  // check
>>        > > > > > > > > > > > > > > > > > > for ELKS magic
>>        > > > > > > > > > > > > > > > > > > number
>>        > > > > > > > > > > > > > > > > > >            >     cmp $0x4C45,%ax
>>        > > > > > > > > > > > > > > > > > >            >     jnz not_elks
>>        > > > > > > > > > > > > > > > > > >            >     mov 0x01E8,%ax
>>        > > > > > > > > > > > > > > > > > >            >     cmp $0x534B,%ax
>>        > > > > > > > > > > > > > > > > > >            >     jz  boot_it
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > bootsect.S:
>>        > > > > > > > > > > > > > > > > > >            > .org 0x1E3
>>        > > > > > > > > > > > > > > > > > >            > msg1:
>>        > > > > > > > > > > > > > > > > > >            >     .byte 13,10,7
>>        > > > > > > > > > > > > > > > > > >            >     .ascii "ELKS Boot"
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * dumping the "Image" file on
>>        > > > > > > > > > > > > > > > > > > my machine
>>        > > > > > > > > > > > > > > > > > > shows
>>        > > > > > > > > > > > > > > > > > > that
>>        > > > > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > > > > offset and the string
>>        > > > > > > > > > > > > > > > > > >            > are correct:
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > 0001e0 12 0f 09 0d 0a 07 45 4c
>>        > > > > > > > > > > > > > > > > > > 4b 53 20 42
>>        > > > > > > > > > > > > > > > > > > 6f 6f
>>        > > > > > > > > > > > > > > > > > > 74 20
>>        > > > > > > > > > > > > > > > > > > > ......ELKS Boot <
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > * so I agree that the loaded
>>        > > > > > > > > > > > > > > > > > > file "linux" is
>>        > > > > > > > > > > > > > > > > > > not
>>        > > > > > > > > > > > > > > > > > > the
>>        > > > > > > > > > > > > > > > > > > right
>>        > > > > > > > > > > > > > > > > > > one in memory
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > Could you please:
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > 1) dump the "Image" file and
>>        > > > > > > > > > > > > > > > > > > check the data
>>        > > > > > > > > > > > > > > > > > > @
>>        > > > > > > > > > > > > > > > > > > 1E0h ?
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > 2) "DD" the content of your CF
>>        > > > > > > > > > > > > > > > > > > card to a
>>        > > > > > > > > > > > > > > > > > > file and
>>        > > > > > > > > > > > > > > > > > > upload that
>>        > > > > > > > > > > > > > > > > > > file to a
>>        > > > > > > > > > > > > > > > > > >            > server, so that I could inspect
>>        > > > > > > > > > > > > > > > > > > the actual
>>        > > > > > > > > > > > > > > > > > > structure
>>        > > > > > > > > > > > > > > > > > > of the
>>        > > > > > > > > > > > > > > > > > > Minix filesystem
>>        > > > > > > > > > > > > > > > > > >            > on your CF card ? I understood
>>        > > > > > > > > > > > > > > > > > > you flashed
>>        > > > > > > > > > > > > > > > > > > it
>>        > > > > > > > > > > > > > > > > > > with
>>        > > > > > > > > > > > > > > > > > > fd1440.bin, but I would
>>        > > > > > > > > > > > > > > > > > >            > like to see what the CF card
>>        > > > > > > > > > > > > > > > > > > contains at the
>>        > > > > > > > > > > > > > > > > > > end.
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > Thanks,
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > MFLD
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            >
>>        > > > > > > > > > > > > > > > > > >            > Le 17/12/2019 ? 11:23, Paul
>>        > > > > > > > > > > > > > > > > > > Osmialowski a
>>        > > > > > > > > > > > > > > > > > > écrit :
>>        > > > > > > > > > > > > > > > > > >            > > I've looked at the problem
>>        > > > > > > > > > > > > > > > > > > more closely
>>        > > > > > > > > > > > > > > > > > > and now
>>        > > > > > > > > > > > > > > > > > > I
>>        > > > > > > > > > > > > > > > > > > see that
>>        > > > > > > > > > > > > > > > > > > after
>>        > > > > > > > > > > > > > > > > > >            > > "Revise bootblocks for
>>        > > > > > > > > > > > > > > > > > > GCC-IA16" commit
>>        > > > > > > > > > > > > > > > > > >            > >
>>        > > > > > > > > > > > > > > > > > > (9e038b816014f83c0808df1ee5697380cd6be499)
>>        > > > > > > > > > > > > > > > > > > there's
>>        > > > > > > > > > > > > > > > > > > no way
>>        > > > > > > > > > > > > > > > > > > to boot ELKS on
>>        > > > > > > > > > > > > > > > > > >            > > any real machine whatsoever.
>>        > > > > > > > > > > > > > > > > > > The magic
>>        > > > > > > > > > > > > > > > > > > number
>>        > > > > > > > > > > > > > > > > > > was
>>        > > > > > > > > > > > > > > > > > > specified
>>        > > > > > > > > > > > > > > > > > > in file
>>        > > > > > > > > > > > > > > > > > >            > > sysboot16.s that this patch
>>        > > > > > > > > > > > > > > > > > > hapily
>>        > > > > > > > > > > > > > > > > > > removes. The
>>        > > > > > > > > > > > > > > > > > > bootloader's run_prog()
>>        > > > > > > > > > > > > > > > > > >            > > routine looks for
>>        > > > > > > > > > > > > > > > > > > non-existing thing. And
>>        > > > > > > > > > > > > > > > > > > even
>>        > > > > > > > > > > > > > > > > > > after
>>        > > > > > > > > > > > > > > > > > > removal of that check,
>>        > > > > > > > > > > > > > > > > > >            > > the bootloader stucks
>>        > > > > > > > > > > > > > > > > > > somewhere after
>>        > > > > > > > > > > > > > > > > > > boot_it
>>        > > > > > > > > > > > > > > > > > > label.
>>        > > > > > > > > > > > > > > > > > > It
>>        > > > > > > > > > > > > > > > > > > happens with hd,
>>        > > > > > > > > > > > > > > > > > >            > > it happens with floppy. ELKS
>>        > > > > > > > > > > > > > > > > > > now can be
>>        > > > > > > > > > > > > > > > > > > used
>>        > > > > > > > > > > > > > > > > > > only
>>        > > > > > > > > > > > > > > > > > > with
>>        > > > > > > > > > > > > > > > > > > emulators and it's
>>        > > > > > > > > > > > > > > > > > >            > > a regression comparing to
>>        > > > > > > > > > > > > > > > > > > what was
>>        > > > > > > > > > > > > > > > > > > possible
>>        > > > > > > > > > > > > > > > > > > last
>>        > > > > > > > > > > > > > > > > > > year.
>>        > > > > > > > > > > > > > > > > > >            > >
>>        > > > > > > > > > > > > > > > > > >            > > On Mon, 16 Dec 2019, Paul
>>        > > > > > > > > > > > > > > > > > > Osmialowski
>>        > > > > > > > > > > > > > > > > > > wrote:
>>        > > > > > > > > > > > > > > > > > >            > >
>>        > > > > > > > > > > > > > > > > > >            > > > Hello MFLD,
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > >            > > > As I'm back to my old flat
>>        > > > > > > > > > > > > > > > > > > for a while,
>>        > > > > > > > > > > > > > > > > > > I can
>>        > > > > > > > > > > > > > > > > > > follow this
>>        > > > > > > > > > > > > > > > > > > up for couple of
>>        > > > > > > > > > > > > > > > > > >            > > > days.
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > >            > > > I've made following changes
>>        > > > > > > > > > > > > > > > > > > in
>>        > > > > > > > > > > > > > > > > > > bootsector
>>        > > > > > > > > > > > > > > > > > > files:
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > >            > > > diff --git
>>        > > > > > > > > > > > > > > > > > > a/elkscmd/bootblocks/minix_first.S
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > > b/elkscmd/bootblocks/minix_first.S
>>        > > > > > > > > > > > > > > > > > >            > > > index c70625a6..cce72ba1
>>        > > > > > > > > > > > > > > > > > > 100644
>>        > > > > > > > > > > > > > > > > > >            > > > ---
>>        > > > > > > > > > > > > > > > > > > a/elkscmd/bootblocks/minix_first.S
>>        > > > > > > > > > > > > > > > > > >            > > > +++
>>        > > > > > > > > > > > > > > > > > > b/elkscmd/bootblocks/minix_first.S
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -75,7 +75,8 @@ loopy:
>>        > > > > > > > > > > > > > > > > > >            > > > mov $0x0201,%ax    // read
>>        > > > > > > > > > > > > > > > > > > 1
>>        > > > > > > > > > > > > > > > > > > sector
>>        > > > > > > > > > > > > > > > > > >            > > > mov $sector_2,%bx  //
>>        > > > > > > > > > > > > > > > > > > destination
>>        > > > > > > > > > > > > > > > > > >            > > > mov $2,%cx         // track
>>        > > > > > > > > > > > > > > > > > > 0 -
>>        > > > > > > > > > > > > > > > > > > from
>>        > > > > > > > > > > > > > > > > > > sector 2
>>        > > > > > > > > > > > > > > > > > > (base 1)
>>        > > > > > > > > > > > > > > > > > >            > > > -  xor %dx,%dx        //
>>        > > > > > > > > > > > > > > > > > > drive 0 -
>>        > > > > > > > > > > > > > > > > > > head
>>        > > > > > > > > > > > > > > > > > > 0
>>        > > > > > > > > > > > > > > > > > >            > > > +  mov $0x80,%dx      //
>>        > > > > > > > > > > > > > > > > > > head 0 -
>>        > > > > > > > > > > > > > > > > > > drive
>>        > > > > > > > > > > > > > > > > > > 0x80
>>        > > > > > > > > > > > > > > > > > >            > > > +  // xor %dx,%dx // drive
>>        > > > > > > > > > > > > > > > > > > 0 - head
>>        > > > > > > > > > > > > > > > > > > 0
>>        > > > > > > > > > > > > > > > > > >            > > > int $0x13          // BIOS
>>        > > > > > > > > > > > > > > > > > > disk
>>        > > > > > > > > > > > > > > > > > > services
>>        > > > > > > > > > > > > > > > > > >            > > > jc loopy
>>        > > > > > > > > > > > > > > > > > >            > > > jmp _next2
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -250,7 +251,7 @@
>>        > > > > > > > > > > > > > > > > > > drive_reset:
>>        > > > > > > > > > > > > > > > > > >            > > >   // #undef
>>        > > > > > > > > > > > > > > > > > > CONFIG_IMG_FD360
>>        > > > > > > > > > > > > > > > > > >            > > >  sect_max:
>>        > > > > > > > > > > > > > > > > > >            > > > -#ifdef CONFIG_IMG_FD720
>>        > > > > > > > > > > > > > > > > > >            > > > +#if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD360) ||
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD720)
>>        > > > > > > > > > > > > > > > > > >            > > > .word 9
>>        > > > > > > > > > > > > > > > > > >            > > >   #endif
>>        > > > > > > > > > > > > > > > > > >            > > >   #if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD1200)
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -262,11 +263,17 @@
>>        > > > > > > > > > > > > > > > > > > sect_max:
>>        > > > > > > > > > > > > > > > > > >            > > >   #if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD1680)
>>        > > > > > > > > > > > > > > > > > >            > > > .word 21
>>        > > > > > > > > > > > > > > > > > >            > > >   #endif
>>        > > > > > > > > > > > > > > > > > >            > > > +#if defined(CONFIG_IMG_HD)
>>        > > > > > > > > > > > > > > > > > >            > > > +  .word 61
>>        > > > > > > > > > > > > > > > > > >            > > > +#endif
>>        > > > > > > > > > > > > > > > > > >            > > >  head_max:
>>        > > > > > > > > > > > > > > > > > >            > > >   #if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD1440) ||
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD720) ||
>>        > > > > > > > > > > > > > > > > > >            > > > defined(CONFIG_IMG_FD360)
>>        > > > > > > > > > > > > > > > > > > ||
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD1200)
>>        > > > > > > > > > > > > > > > > > > ||
>>        > > > > > > > > > > > > > > > > > >            > > > defined(CONFIG_IMG_FD1680)
>>        > > > > > > > > > > > > > > > > > >            > > > .word 2
>>        > > > > > > > > > > > > > > > > > >            > > >   #endif
>>        > > > > > > > > > > > > > > > > > >            > > > +#if defined(CONFIG_IMG_HD)
>>        > > > > > > > > > > > > > > > > > >            > > > +  .word 1
>>        > > > > > > > > > > > > > > > > > >            > > > +#endif
>>        > > > > > > > > > > > > > > > > > >            > > >  track_max:
>>        > > > > > > > > > > > > > > > > > >            > > >   #if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD360)
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -275,6 +282,9 @@
>>        > > > > > > > > > > > > > > > > > > track_max:
>>        > > > > > > > > > > > > > > > > > >            > > >   #if
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD1440) ||
>>        > > > > > > > > > > > > > > > > > > defined(CONFIG_IMG_FD720)
>>        > > > > > > > > > > > > > > > > > >            > > > .word 80
>>        > > > > > > > > > > > > > > > > > >            > > >   #endif
>>        > > > > > > > > > > > > > > > > > >            > > > +#if defined(CONFIG_IMG_HD)
>>        > > > > > > > > > > > > > > > > > >            > > > +  .word 1024
>>        > > > > > > > > > > > > > > > > > >            > > > +#endif
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > >   //------------------------------------------------------------------------------
>>        > > > > > > > > > > > > > > > > > >            > > >   diff --git
>>        > > > > > > > > > > > > > > > > > > a/elkscmd/bootblocks/minix_second.c
>>        > > > > > > > > > > > > > > > > > >            > > >
>>        > > > > > > > > > > > > > > > > > > b/elkscmd/bootblocks/minix_second.c
>>        > > > > > > > > > > > > > > > > > >            > > > index f33c6139..9fd3e6d2
>>        > > > > > > > > > > > > > > > > > > 100644
>>        > > > > > > > > > > > > > > > > > >            > > > ---
>>        > > > > > > > > > > > > > > > > > > a/elkscmd/bootblocks/minix_second.c
>>        > > > > > > > > > > > > > > > > > >            > > > +++
>>        > > > > > > > > > > > > > > > > > > b/elkscmd/bootblocks/minix_second.c
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -74,7 +74,7 @@ static
>>        > > > > > > > > > > > > > > > > > > int load_super
>>        > > > > > > > > > > > > > > > > > > ()
>>        > > > > > > > > > > > > > > > > > >            > > > int err;
>>        > > > > > > > > > > > > > > > > > >            > > >   while (1) {
>>        > > > > > > > > > > > > > > > > > >            > > > -        err = disk_read
>>        > > > > > > > > > > > > > > > > > > (0, 2,
>>        > > > > > > > > > > > > > > > > > > 2,
>>        > > > > > > > > > > > > > > > > > > sb_block,
>>        > > > > > > > > > > > > > > > > > > seg_data ());
>>        > > > > > > > > > > > > > > > > > >            > > > +        err = disk_read
>>        > > > > > > > > > > > > > > > > > > (0x80,
>>        > > > > > > > > > > > > > > > > > > 2, 2,
>>        > > > > > > > > > > > > > > > > > > sb_block,
>>        > > > > > > > > > > > > > > > > > > seg_data ());
>>        > > > > > > > > > > > > > > > > > >            > > >         //if (err) break;
>>        > > > > > > > > > > > > > > > > > >            > > >           sb_data = (struct
>>        > > > > > > > > > > > > > > > > > > super_block
>>        > > > > > > > > > > > > > > > > > > *)
>>        > > > > > > > > > > > > > > > > > > sb_block;
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -116,7 +116,7 @@ static
>>        > > > > > > > > > > > > > > > > > > int
>>        > > > > > > > > > > > > > > > > > > load_inode ()
>>        > > > > > > > > > > > > > > > > > >            > > >         // Compute inode
>>        > > > > > > > > > > > > > > > > > > block
>>        > > > > > > > > > > > > > > > > > > and
>>        > > > > > > > > > > > > > > > > > > load
>>        > > > > > > > > > > > > > > > > > > if not
>>        > > > > > > > > > > > > > > > > > > cached
>>        > > > > > > > > > > > > > > > > > >            > > >           int ib = ib_first
>>        > > > > > > > > > > > > > > > > > > +
>>        > > > > > > > > > > > > > > > > > > i_now
>>        > > > > > > > > > > > > > > > > > > /
>>        > > > > > > > > > > > > > > > > > > INODES_PER_BLOCK;
>>        > > > > > > > > > > > > > > > > > >            > > > -        err = disk_read
>>        > > > > > > > > > > > > > > > > > > (0, ib
>>        > > > > > > > > > > > > > > > > > > << 1,
>>        > > > > > > > > > > > > > > > > > > 2,
>>        > > > > > > > > > > > > > > > > > > i_block,
>>        > > > > > > > > > > > > > > > > > > seg_data ());
>>        > > > > > > > > > > > > > > > > > >            > > > +        err = disk_read
>>        > > > > > > > > > > > > > > > > > > (0x80,
>>        > > > > > > > > > > > > > > > > > > ib <<
>>        > > > > > > > > > > > > > > > > > > 1, 2,
>>        > > > > > > > > > > > > > > > > > > i_block, seg_data ());
>>        > > > > > > > > > > > > > > > > > >            > > >         //if (err) break;
>>        > > > > > > > > > > > > > > > > > >            > > >           // Get inode data
>>        > > > > > > > > > > > > > > > > > >            > > > @@ -137,12 +137,12 @@
>>        > > > > > > > > > > > > > > > > > > static int
>>        > > > > > > > > > > > > > > > > > > load_zone
>>        > > > > > > > > > > > > > > > > > > (int
>>        > > > > > > > > > > > > > > > > > > level,
>>        > > > > > > > > > > > > > > > > > > zone_nr * z_start,
>>        > > > > > > > > > > > > > > > > > >            > > > zone_nr * z_end)
>>        > > > > > > > > > > > > > > > > > >            > > > for (zone_nr * z = z_start;
>>        > > > > > > > > > > > > > > > > > > z <
>>        > > > > > > > > > > > > > > > > > > z_end;
>>        > > > > > > > > > > > > > > > > > > z++) {
>>        > > > > > > > > > > > > > > > > > >            > > >         if (level == 0) {
>>        > > > > > > > > > > > > > > > > > >            > > >                 // FIXME:
>>        > > > > > > > > > > > > > > > > > > image
>>        > > > > > > > > > > > > > > > > > > can
>>        > > > > > > > > > > > > > > > > > > be >
>>        > > > > > > > > > > > > > > > > > > 64K
>>        > > > > > > > > > > > > > > > > > >            > > > -                err =
>>        > > > > > > > > > > > > > > > > > > disk_read
>>        > > > > > > > > > > > > > > > > > > (0,
>>        > > > > > > > > > > > > > > > > > > (*z)
>>        > > > > > > > > > > > > > > > > > > << 1, 2,
>>        > > > > > > > > > > > > > > > > > > i_now ? f_pos :
>>        > > > > > > > > > > > > > > > > > >            > > > d_dir + f_pos, i_now ?
>>        > > > > > > > > > > > > > > > > > > LOADSEG :
>>        > > > > > > > > > > > > > > > > > > seg_data
>>        > > > > > > > > > > > > > > > > > > ());
>>        > > > > > > > > > > > > > > > > > >            > > > +                err =
>>        > > > > > > > > > > > > > > > > > > disk_read
>>        > > > > > > > > > > > > > > > > > > (0x80,
>>        > > > > > > > > > > > > > > > > > > (*z) << 1,
>>        > > > > > > > > > > > > > > > > > > 2, i_now ? f_pos
>>        > > > > > > > > > > > > > > > > > >            > > > : d_dir + f_pos, i_now ?
>>        > > > > > > > > > > > > > > > > > > LOADSEG :
>>        > > > > > > > > > > > > > > > > > > seg_data
>>        > > > > > > > > > > > > > > > > > > ());
>>        > > > > > > > > > > > > > > > > > >            > > >                 f_pos +=
>>        > > > > > > > > > > > > > > > > > > BLOCK_SIZE;
>>        > > > > > > > > > > > > > > > > > >            > > >                 if (f_pos
>>        > > > > > > > > > > > > > > > > > > >=
>>        > > > > > > > > > > > > > > > > > > i_data->i_size)
>>        > > > > > > > > > > > > > > > > > > break;
>>        > > > > > > > > > > > > > > > > > >            > > >         } else {
>>        > > > > > > > > > > > > > > > > > >            > > >                 int next =
>>        > > > > > > > > > > > > > > > > > > level -
>>        > > > > > > > > > > > > > > > > > > 1;
>>        > > > > > > > > > > > > > > > > > >            > > > -                err =
>>        > > > > > > > > > > > > > > > > > > disk_read
>>        > > > >
>>
>>

  parent reply	other threads:[~2020-02-17 21:24 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <alpine.LNX.2.21.1904141943280.11933@localhost.localdomain>
     [not found] ` <alpine.LNX.2.21.1904151809190.25824@localhost.localdomain>
     [not found]   ` <e10535c1-4751-7e9a-5f76-9cc631e4eb3c@gmail.com>
     [not found]     ` <alpine.LNX.2.21.1904162210400.4944@localhost.localdomain>
     [not found]       ` <6e26eeeb-c80a-c42b-f2af-91b8df146a5e@gmail.com>
     [not found]         ` <alpine.LNX.2.21.1904172300570.28634@localhost.localdomain>
     [not found]           ` <cf48f070-f306-4afa-8afa-3e5b338114e7@gmail.com>
     [not found]             ` <alpine.LNX.2.21.1904181343510.11093@localhost.localdomain>
     [not found]               ` <1c3b5526-66ae-5ed3-ecc2-b6e7f14b53ca@gmail.com>
     [not found]                 ` <alpine.LNX.2.21.1.1912161352140.19666@localhost.localdomain>
     [not found]                   ` <alpine.LNX.2.21.1.1912171117001.25658@localhost.localdomain>
     [not found]                     ` <f62d11b1-8e42-cbd9-d466-b4b60c5c18ea@gmail.com>
     [not found]                       ` <alpine.LNX.2.21.1.1912172310001.28757@localhost.localdomain>
     [not found]                         ` <CACpuWUnxxZr=8i0srFGkSPPLzrhMxMVBF1xXbh6ZXaG2ORS8Tw@mail.gmail.com>
     [not found]                           ` <alpine.LNX.2.21.1.1912182337240.24813@localhost.localdomain>
     [not found]                             ` <alpine.LNX.2.21.1.1912182347540.24813@localhost.localdomain>
     [not found]                               ` <3c988b36-6f34-b903-6a80-e54b56c1c950@gmail.com>
2020-01-24 21:05                                 ` Cannot boot the real thing from HDD Marc-F. Lucca-Daniau
2020-01-30 19:51                                   ` Paul Osmialowski
2020-01-30 21:43                                     ` Marc-F. Lucca-Daniau
2020-02-01 10:28                                       ` Marc-F. Lucca-Daniau
2020-02-03 16:59                                         ` Paul Osmialowski
2020-02-03 18:52                                           ` Marc-F. Lucca-Daniau
2020-02-03 22:05                                             ` Paul Osmialowski
2020-02-03 22:09                                               ` Paul Osmialowski
2020-02-05 15:37                                                 ` Paul Osmialowski
2020-02-08  9:35                                                   ` Marc-F. Lucca-Daniau
2020-02-08 12:58                                                     ` Paul Osmialowski
2020-02-05 19:26                                               ` Marc-F. Lucca-Daniau
2020-02-05 23:45                                                 ` Paul Osmialowski
2020-02-06 10:07                                                   ` Paul Osmialowski
2020-02-08 13:08                                                     ` Paul Osmialowski
2020-02-10 23:38                                                       ` Paul Osmialowski
2020-02-11 20:38                                                         ` Marc-F. Lucca-Daniau
2020-02-12 19:39                                                           ` Marc-F. Lucca-Daniau
     [not found]                                                             ` <alpine.LNX.2.21.1.2002122207100.31423@localhost.localdomain>
     [not found]                                                               ` <CACpuWU=DhqB93KxhmD2jpueOUrAkSPVeMPmLnRq4_j=zLjfm5g@mail.gmail.com>
     [not found]                                                                 ` <alpine.LNX.2.21.1.2002122326370.561@localhost.localdomain>
2020-02-17 21:24                                                                   ` Marc-F. Lucca-Daniau [this message]
2020-02-17 21:27                                                                     ` Paul Osmialowski
2020-02-17 21:34                                                                       ` Paul Osmialowski
2020-02-20 23:21                                                                         ` Paul Osmialowski
2020-02-22 16:24                                                                         ` Derek Johansen
2020-02-22 16:38                                                                           ` Jody Bruchon
2020-02-22 17:19                                                                             ` Derek Johansen
2020-02-22 21:27                                                                               ` Paul Osmialowski
2020-02-21  9:11                                                                       ` Marc-F. Lucca-Daniau

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