Hi! As you may have read, some company has created an eeepc sized PC-XT
laptop called Book8088. It ships with MS DOS on a CF card. Bocke got an
EDR-DOS kernel and SvarDOS apps to work on it, too, but FreeDOS kernels
crash. SvarDOS is a FreeDOS based floppy distro - http://svardos.org/
which is maintained by Mateusz. It also has an active forum :-)
Given that others must have used FreeDOS on 8086 or 8088 with 640k RAM
before, the assumption is that something goes wrong in/after partition
enumeration. Maybe some unsupported BIOS functionality is called or
there is an issue with the geometry?
Now it would be useful to have a known good 8086 compatible kernel which
has some debug messages enabled. Which FreeDOS kernel binary would you
recommend for that? Or maybe somebody wants to join the thread on BTTR
and work on the kernel interactively?
Modified BIOS versions for the Book8088 already exist, too. Also, it
turned out (according to VOGONS or VCFED) that the VGA BIOS has some
issue with Windows and other software. An update exists, but apparently
it cannot be flashed via ICP in-circuit, so one would have to desolder
the EEPROM to update the VGA BIOS to use the full resolution and colors.
https://www.bttr-software.de/forum/board_entry.php?&id=21061&be_page=1&da=ASC&page=0&category=all&order=time&descasc=DESC
shows photos telling us that one of the tested CF cards has geometry
1006x16x63 with 1014048 LBA sectors, but there is no int 13.48 in the
BIOS, only int 13.8 support in the add-on XTIDE BIOS r625.
A FreeDOS 2043 kernel built 2021-05-13 with FAT32 support built with
Watcom C (hopefully an 8086 compatible build!) shows the version and
copyright messages and lists the C: partition, but then hangs:
C: HD1, Pri[1], CHS=0-1-1, start=0 MB, size=480 MB
Regards, Eric
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