[Coco] RGBDOS in Mess

John Orwen jorwen at neb.rr.com
Fri Dec 23 09:59:46 EST 2011


Thank you Robert !

Mess would not load the rgb rom  renamed to disk11.rom  but when I put 
the virgin disk11.rom back in the coco3 subdirectory  and renamed the 
rgb rom to rgb4mess.rom and loaded it into the CART: slot everything 
worked as it should.

I will eventually need the nitros9 drivers and software but not just 
yet.  Right now I am slow to recognize, process, digest and store 
information.  As soon as I get this all working the way I want to, I 
will request the nitros9 information.

Thank you for responding so quickly with accurate information

John

On 12/22/2011 8:10 PM, Robert Gault wrote:
> John Orwen wrote:
>> How do you remove the first two bytes in the disk.rom included in the 
>> RGB
>> package dowloadable from Aaron Wolfe's website ? It is 8194 bytes and 
>> Mess
>> refuses to load it because it is not 8192 bytes in size. Is there a 
>> free binary
>> file editor that can be used to strip off the first two bytes ?
>>
>> John
>>
>
> John,
> The ROM image in that package is set to be used with the JVC emulator 
> that requires a leading two bytes indicating where the ROM is loaded 
> in memory. Those two bytes are not used by MESS and should not be 
> there. Otherwise there is no difference in function.
> Since you can't conveniently remove those bytes, I'll send you by 
> direct email an appropriate ROM image.
>
> MESS is constantly being changed and the recent versions, ex. 1.44, 
> now permit mounting two .vhd drives at the same time. The ROM on 
> Aaron's site is not designed for two .vhd drives, so I'll be sending 
> you a more recent ROM that can access the second .vhd drive under Disk 
> Basic.
> DRIVE#0 gets .vhd #0
> DRIVE#1 gets .vhd #1
>
> If you are interested in NitrOS-9, you will need a new driver to 
> access the second .vhd drive. While emudsk.dr could be modified to 
> handle two drives, I've chosen the easier task of using a second 
> driver emudsk1.dr which sets $FF86=1 to indicate the second .vhd drive 
> and resets $FF86=0 when finished to indicate the first .vhd drive.
> Let me know if you need emudsk1.dr and /H1.
>
> Robert
>
>
>
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