[Coco] Re: CHIP-8 emulator for Coco

[Bob Devries]

David did you ever download those files from my website?

--
Regards, Bob Devries. Dalby, Queensland, Australia.
Faith isn't faith until it's all you're holding on to.
http://e4god.com/freeblogs/bdevries/


----- Original Message ----- 
From: "David" <golgotha at toughguy.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Tuesday, January 04, 2005 11:26 PM
Subject: Re: [Coco] Re: CHIP-8 emulator for Coco


> Thanks for your reply, Brett!
>
> As you said, most on the website are for S-CHIP - I'm primarilly focussing
> on the previous version of the standard, CHIP-8
> Apart from sheer laziness, this decision was primary based on the graphics
> resolution of the CHIP-8 standard - 64x32. This just happens to fit nicely
> on the semigraphics-4 text mode 32x16 on the Coco2
>
> Once I have the CHIP-8 emulator up and running, I may expand into S-CHIP.
> This would require moving to a graphics-based display - perhaps the
> non-basic 128 x 64 mode, or even 128 x 96 PMODE 0 .
>
> The main differences between the standards are the graphics mode, and a 
> few
> extra features like larger in-built fonts, scrolling commands, etc
>
> I have no concerns as to whether the Coco2 is up to the challenge of 
> running
> the CHIP-8/SCHIP systems - the only problem could be my programming 
> skills!
> (sketchy at best, as I'm learning 6809 ASM as I go along on this project!)
>
> As for the source code, that's not a problem either.. I've written a 
> little
> disassembler for the Coco that reads the CHIP-8 roms and outputs the 
> object
> and disassembled source code to screen or printer as selected - its not 
> too
> hard to identify whats happening after a bit of investigation and manual
> addition of labels :)
>
> Here's to a productive new year for the Coco!
>
> Regards,
> David
>
>
>
>> Sorry this is late but I've been out of touch over the holidays.
>>
>> I've used SCHIP to play Joust on my HP48 and it runs really well, which
>> probably means the coco could handle it also.
>>
>> While I haven't done anything personally with CHIP8/SCHIP the HP48(9)
>> still has an active user community (not unlike the coco:-) and they might
>> be able to help you get more info. There is a software archive at
>>
>> http://www.hpcalc.org
>>
>> which has several implementations of the SCHIP emulator (including 
>> bundled
>> in games). A quick browse didn't turn up any source listings (these
>> archives are meant to be downloaded to the calc over a slow serial link)
>> but you could contact the authors and ask. Just do a search from the main
> page
>> for "SCHIP" to find what's there.
>>
>> You might also look at the archives for comp.sys.hp48 and/or ask there.
>>
>> I may have some stuff on my home machine, I'll check tonight.
>>
>> HTH
>>
>> Brett K. Heath
>>
>>
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>
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