Subject: Re: [stella] How about 6800? From: "Roger Williams" <mer02@xxxxxxxxxxxxx> Date: Thu, 13 Sep 2001 17:05:05 -0700 |
> I don't want to wast my money so I'm asking you if this book can be useful. > I think the 6800 is a 16 bit microprocessor but its instruction set is very > similar to the 6502's (at least the mnemonics), and there are 4 different > books. The 6800 is an 8-bit processor similar to the 6502, but not similar enough to be useful in Stella programming, where cycle counts and register usage must. be tweaked exactly. Here http://www.atarihq.com/danb/6502.html is a good link to some online info about the 6502. I wouldn't waste the time photo- copying a book on the 6800 if it's the 6502 you're interested in. Read the book in the library to get a general drift of how .asm works, but study the opcodes, register layouts, and code posted here to get a feel for the 6502. Especially the indexing modes, which are *nothing* like the 6800. --Roger Williams - Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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