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11-02-05 12:59 PM
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Acmlm's Board - I2 Archive - Rom Hacking - GB ASM? | |
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Smallhacker

Green Birdo

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Posted on 10-17-04 02:52 AM Link | Quote
I've been thinking about trying to make an emulator (just to see if I have got enough patience, time and skill), and decided to try to make a GB one, since I guess that it's the simpliest one.
Anyway... I need to know a little about GB ASM, of course. GB uses a z80 processor, right? Is it a normal one or a modified? (In other words: Will any z80 command list work or is a certain "GB z80" list neccesary?)
Dish

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Posted on 10-17-04 03:06 AM Link | Quote
Originally posted by Smallhacker

Anyway... I need to know a little about GB ASM, of course. GB uses a z80 processor, right? Is it a normal one or a modified? (In other words: Will any z80 command list work or is a certain "GB z80" list neccesary?)


Some instructions and registers removed, and a handful of instructions added.. .and possibly even instructions moved around. You'll need a special "GB z80" list.

Here's a page I found when looking for info for a GBS player I was working on:
http://www.devrs.com/gb/docs.php#docsmisc

the 'GB Cribsheet' link on that page I've found to be wonderful and I highly recommend it.. even though it is a pdf file =/
Smallhacker

Green Birdo

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Posted on 10-17-04 03:09 AM Link | Quote
Thanks a lot.
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