[sebhc] H17 system operations

[dave06a at dunfield.com]

All this talk of the simulator and disk images has me looking at
my H17 simulation again.

I've been working on getting the timing "real" enough that you can
INIT a disk. I have it working much more than before, however I have
run into a couple of oddities that perhaps someone can provide some
insight into:

- Note: I'm testing with HDOS 1.6 (the one from the archive)

1) If I specify a volume ID of 255, the INIT works perfectly. It completes,
    and I can mount the disk and write/read files to it.

   If I specify any other volume ID, it goes all the way to the bad sector
   entry, and when I hit RETURN to proceed, it reports "Can't read this
   disk". The disk image that is created also cannot be mounted.

2) I can't SYSGEN a disk.
    Not just the disk I INITed, I can't sysgen to the original HDOS
    disk image either.

    I would assume that SYSGEN just reads data off the source
    disk and writes to the dest disk - I know these operations work,
    as I can INIT a disk, I can boot the system disk, I can run programs,
    and I can save/old BASIC program just fine.

    It seems that SYSGEN is not accessing the disk by the standard
    read/write calls? Or is doing something else "special"?

Ring any bells?

Dave

-- 
dave06a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Vintage computing equipment collector.
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