20 Nov
2021
20 Nov
'21
2:35 p.m.
That's basically it--I can read the transitions
and probably figure out
the GCR, but the zoned recording is going to take some work--taken all
together, more work than I'm willing to put in for a one-time job. I've
got some pressing medical issues and don't really have the time to
dedicate for this.
samdisk can decode Victor 9000 images. It's hard for me to fully test because neither
of my Victors will boot from floppy and the hard disk I have seems to have been wiped. But
the original disks that I've read using scp do seem to mostly decode. They don't
boot in MAME though. To decode using samdisk:
samdisk copy --scale 120 -c0-79 v9k-dos.scp v9k-dos.raw
To convert the raw sector output from samdisk to a triangular image that is MAME
compatible requires two more steps:
v9k-raw2img-fixed.pl v9k-dos.raw v9k-dos.img
dd if=v9k-dos.img bs=512 count=1224 of=v9k-dos.mame
v9k-raw2img-fixed.pl can be found here:
https://forum.system-cfg.com/viewtopic.php?p=172637&sid=bc421b364200410…
The point I'm at with trying to get my Victors working is to see if I can get a good
sector image that will boot in MAME, so I I know I have a good working image and can get a
better idea of what files are needed for booting. Then I can either somehow dump the RAM
out of MAME and poke it directly into the Victor via serial boot (I was able to verify
serial boot is possible) or somehow poke it in using my Fluke 9010. From there I'll
need to probably write some diagnostics to try to figure out what is wrong with the floppy
drives. Then eventually I could create a new .scp using my floppur project from a sector
image that boots in MAME.
--
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