[Coco] Emulation Bummer Action (or lack thereof)

[Tveo Loatouse]

Robert Gault wrote:

> Roger Merchberger wrote:
>> 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. :-(
>>
> 
> I have been able to run the original JV Coco emulator in DOSBox but the
> Coco3 emulator (John Collyer version) does not work. The best I've been
> able to get is a 128K startup screen even though the 2Meg file is present.
> The emulator screen is trashed but will clear with any of the F# keys such
> as F6. I can leave "emulation" with F6 and then Q for quit.
> 
> Of more interest is that I can run the JV Coco2 emulator from WinXP
> without DOSBox. I only need to install the autoexec.nt and config.nt files
> (system32) with the following lines.
> autoexec.nt
>   lh %SystemRoot%\system32\dosx
> 
> config.nt
>   dos=high,umb
>   device=%SystemRoot%\system32\himem.sys
>   files=100
> 
> The JV Coco3 behaves about the same way it does in DOSBox under these
> conditions. VGACheck.exe runs perfectly in WinXP without any help if
> autoexec.nt and config.nt are used. Memory settings are Auto and
> compatibility is set for Win95.
> 
> --
> Coco mailing list
> Coco-uNHYcr1XS/wmlAP/+Wk3EA at public.gmane.org
> http://five.pairlist.net/mailman/listinfo/coco

As to running John Collyer's version of the emulator in DosBox,
here is how I made it work in my Linux system.

I made a virtual c:\hd.img -size 512,63,64,1023
This hard drive image is 2 Gig in size and I
fdisk and formated it using MS-DOS 6.2. I
installed MS-DOS 6.2 and Win 3.1 and other programs
using image disk files. It has been sometime since I
worked with it, so I can't remember exactly how I
did it. so google DosBox, install MS-DOS, and image files.

I think, I used WinImage to work with the image files.

I also changed the configuration file for DOSBox 0.74.
dosbox-0.74.conf. It was located in a hidden folder in
my home directory in .dosbox


Here are my changes:

memsize=32 /* this gives you more extended memory */

xms=true
ems=false
umb=true

[autoexec]
# Lines in this section will be run at startup.
# You can put your MOUNT lines here.
imgmount c ~/dosbox/hd.img
boot ~/dosbox/hd.img

Your changes may be different.
It works for me in Linux.

Tvefoo