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RE: [N8VEM-S100:4453] Re: CPM3 Disk Image - quick start and Images posted

Having trouble getting my system to boot CPM from the CF card.

I have just the following loaded in my backplane:

4Meg mem. board with 1 pair of chips

Prop I/O card

The Z80 CPU

and the IDE card.

I am using the card options shown on John's S100 page.

John M.'s CPU monitor seems to run fine. When I load a CF card (tried with different cards, same result) and boot

with the monitor "P" command, I get:


CP?M V3.0 Loader

Copyright (C) 1980, Digital Research




And that's it. There is a "40" display on the IDE card, which I take to mean Sector 40 was being read?

I've not had time to read/in detail all the posts, due to personal circumstances; so I may have missed something.

I have seen mention about options on some of the cards- is there a compendium of all these somewhere for the CPM load?

Trying to find the time to troubleshoot this properly-

Suggestions/ guidance appreciated

thank you




From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of nbreeden
Sent: Tuesday, July 01, 2014 5:24 PM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:4453] Re: CPM3 Disk Image - quick start and Images posted


On Sunday, June 22, 2014 12:42:01 PM UTC-7, yoda wrote:

I have uploaded the basic images and a short document on how to put these on a CF card with all the necessary tools included.  The link is http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=CPM3-Disk-Images


I have also included modified cpmtools that understand the disk format so you can manipulate the images before writing them to a CF card.   I would like to use this thread for questions and suggestions for the documentation.  I have not verified the prop images as I did not have any 74LS374's on hand so I could not finish bringing up my prop console board - should be able to do that by the coming weekend.  I assume a lot of you can verify whether they work or not.  I believe they should.  I have verified the serial ones do work.


I am opening another thread for suggestions for going forward.  I want to cover how to build and customize the actual cpmldr and cpm3.sys files.  I will leverage a lot of what John has done and David Fry will contribute his work on the LBA addressing changes that made this all work.


Let me know how it goes.



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