CompuPro Disk3

CompuPro Disk3

CompuPro Disk3 MFM Hard drive controllers. I can't remember which one was mine from back in the day, I ran a BBS on a couple 8" DSDD Floppy disks. I picked up another Disk3 along the way. This page will hopefully document me getting an old MFM drive booting CP/M. Probably a Quantum Q540. Both controllers appear functional

194D

Note the engineering changes on the backside. See the wires?

194G

Files

I was able to fire these, File:Compupro.zip, up in a simulator, Altair 8800 (Z80) simulator V3.8-1 build 1296, Lot's of different CompuPro operating systems architectures and versions. I was able to boot up CP/M-80 version Q. Wish I could remember where I downloaded this, I like to give credit. Drop me a note if you find or have seen it elsewhere.

Maslin CompuPro files archives

The Maslin CompuPro files archives and the cp/m 80 2.2 Q files locally located here User retrogear on comp.os.cpm used the following procedure to convert the .td0 image to a more common .imd format. Quoted in part from this discussion.

My quest to get a bootable cp/m 2.2q on my compupro system has led me to Don Maslin's archive. 
Don Maslin's cpm8022q.td0 is corrupted. My first clue was when too many tracks were reported: 

C:\imd>td02imd cpm8022q 
TD 1.5 8" HD MFM S-step, 1 sides ADV 14/01/1997 19:56:14 
CP/M-2.2Q system disk for CompuPro 
SSDD 1024 byte sector, 1-8, 1:1 
81 tracks, 645 sectors converted. 

So then I used samdisk to convert and imdu to expand which revealed the problem: 

C:\imd>samdisk cpm8022q.td0 cpm8022q.imd 

C:\imd>imdu cpm8022q.imd cpm22qu.imd /E 
IMageDisk Utility 1.17 / Jun 27 2008 
IMD SAMdisk100620, 09/08/2015 12:03:51 
 0/0 500 kbps SD  26x128 
 1/0 500 kbps DD  8x1024 
77/0 500 kbps SD  1x128 
80/0 500 kbps DD  8x1024 
81 tracks(81/0), 645 sectors (31 Compressed) 

Tracks 77-80 were bogus maybe because read on an 80 track drive? 
Then I used samdisk to trim to 77 tracks: 

C:\imd>samdisk cpm8022q.td0 cpm8022q.imd -c 0-76 

Then expanded with imagedisk: 

C:\imd>imdu cpm8022q.imd cpm22qu.imd /E 
IMageDisk Utility 1.17 / Jun 27 2008 
IMD SAMdisk100620, 09/08/2015 12:06:37 
 0/0 500 kbps SD  26x128 
 1/0 500 kbps DD  8x1024 
77 tracks(77/0), 634 sectors (31 Compressed)

Hardware boot

On 8/11/2015 I got Disk3 access on a Quantum Q540

CompuPro Systems CP/M 2.2Q Disk Loader 

Can't open BIOS.COM 
What BIOS*.COM do you want to read?  test 
Loading BIOSTEST.COM 


CompuPro 64K CP/M 2.2Q (85/88) 
Copyright (c) 1985 VIASYN Corporation 

Disk3/Q540 as A: B: C: D: E: F: 

8" DISK1A as I: J: 

0 M-Drive/H as drive M: 


Hard disk unit 0 not formatted properly. 

SUBMIT? 

A> 
A>dir 
A: SWEEP    COM 
A>dir i: 
I: MEX      COM : MEX      HLP : MEX      LIB : NULL     MEX 
I: SURVEY   COM : WM       COM : WS       COM : WSMSGS   OVR 
[...] 

A>i:stat 
A: R/W, Space: 5092k 
I: R/W, Space: 382k 


A>

ROM images

223D on 194D board

223D.zip file of the 223D ROM on a Disk3 194D board. It was copied using a Wellon VP-290 in binary mode during save to disk.

Renewed interest

May 2019

Important!

NOTE: If you have a DISK 3, be careful when changing from CP/M to 
MP/M™ 8-16™, CCP/M™ 8-16™, CP/M-86™ or CP/M® 8-16™ because the 
logical drive partitioning on the hard disk is different between 
CP/M and all the rest. However, the first and last logical drives 
are the same on all operating systems.