The 3 diskette images are from CP/M-86 for the IBM PC [Not PC/XT as is more
commonly found].  They're 5 1/4" SSDD 8 sector diskettes.  Use 22DISK with
the IBM1 parameters to read them after the disks are created.  That is how I 
read the files off the diskettes originally.

These are the disk images created with copyqm. Use copyqm to 'play them
 back' from their 'recording'.  Something like: 
 copyqm b: playback=c:cpm03178.img

B: drive must be a 5 1/4" that will write SSDD diskettes.

The remaining question might be: why not just save the files, zip'em, and offer
that?  Because the System disk has the boot records which boot the cpm.sys
system file, so for archeological reasons the total disk image is saved.

However, included are the files as found on the three disks:

disk CP/M-86 V1.1 s/n 1024-0000-03178
disk GSX 1 of 2 V1.1 s/n same
disk GSX 2 of 2 V1.1 s/n same

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What is unique about this version, compared to the PC & XT version:

This is for the IBM-PC, there isn't any hard disk support AFAICT.

The Bios INIT: entry is a few pages lower in memory.

The Boot Sector is different code, it is a one stage loader, it expects CPM.SYS
to be first in the disk directory, and first file on the disk, and of a certain
size.

There is an 'Easter Egg' banner in the boot code.  It is accessed by pressing 
all of: Left-Shift, Right-shift, Ctrl, and Alt, at the same time, as the
system boots.  It is a message from Dean Ballard, that he wrote the Bios.

[The PC&XT version has an easter egg as well, accessed by pressing the R-shift
and the question mark keys, as the system boots.  It too, is a message from
Dean Ballard, that he wrote 'much of the code'.  The PC&XT boot loader is
a two stage loader, the 1st sector loads the secondary loader found on Trk0
Sectors 5,6,7,8 into memory, this 2nd then finds & loads CPM.SYS or CCPM.SYS]

This does not have the AT-Patch installed, meaning CP/M overwrites many of the
Page Zero interrupt vectors to an interrupt trap within itself, by design.  
This is of no problem on a PC/XT, it is a problem on more recent processors.

I can boot this on an XT clone, if I remove the SCSI HD Controller from the
buss.  With a Seagate ST-01 installed, it loops reboot attempts.  With a 
Future Domain SCSI Controller, it locks up in the Banner Page.  Without
either, it works fine.

--eof--
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