[Coco] Emulation Bummer Action (or lack thereof)
zmerch-coco at 30below.com
Sat Nov 20 15:01:22 EST 2010
Well, I installed FreeDOS in a virtual machine, figured out how to get a
copy of the CoCo3 ROM in a format that JV's emulator likes, got
everything "working," and...
no dice. :-(
The best I could get was the startup screen, then it would lock the
virtual PC (Ctrl-Alt-Del wouldn't reboot the system) - virtual hard
reset was the only way to regain control of the OS.
DSKINI.exe, Port.exe & the VGA test program all work fine, however.
So, I thought: "Maybe it's something DOS specific..." so I found my
MS-DOS 6.22 disks, was able to get them imaged, and installed "real"
MS-DOS on another virtual computer. (The installer doesn't work well,
you have to fdisk & format the drive manually). Copied the files over
(thankfully JV's emulator fits on a floppy) and...
same thing. :-((
I tinkered with some of the HIMEM/EMM386 settings & other stuff, and
also changed the interface types in VB to things as old as I could
(PIIX3 IDE inteface, etc.), but again, the best I could do was the
welcome screen & the system would lock.
It's not the CoCo3 ROM image going south, I tried the included OS-9 boot
ROM also, and didn't get any farther; it's possibly an "emulated memory"
issue or somesuch...
Short of creating a real MSDOS install on a real PC (which I may very
well try, but not this weekend, anyway) anyone better at VirtualBox than
I am have any clues they could send my way? ;-) Or am I forging new
Does anyone here still run JV's emulator at all?
Roger "Merch" Merchberger
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