Dropping bread crumbs, hehe, that's a good way to put it. I use that technique all the time...
Subject: RE: [N8VEM-S100:6053] I can boot MSDOS but not CPM3
Date: Mon, 19 Jan 2015 10:19:09 -0800
Rich, don’t want to sound flippant, but the problem could be a whole range of things. In order to be of some help, need more information. You need to modify the Bios/Loader and drop bread crumbs along the way (I output a single character on the screen at each step) to determine where the problem is.
I gave up on the ZFDC for now since I can’t get it to calibrate properly (I can’t get the separator frequency above 450kHz with a Qume 242 drive connected), so I went back to the IDE board. I first removed the D82C55-5 (NEC version) and replaced with a regular 82C55AC. I made a DOS 4.01 image from the one on the web site and gave it a whirl and it works! Yipee!
However, I can’t get it to boot CPM3. I’m using the “banked-prop” version and the only message I get is “BOOT error.” I’m using a 32mb CF card. Not sure what’s up with that, but any advice would be appreciated.
Collector of Classic Computers
Build Master and lead engineer, Altair32 Emulator
You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.
To unsubscribe from this group and stop receiving emails from it, send an email to n8vem-s100+...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.