>I do realize that I'm oversimplifying here, but if the problem is that the
>6502
>takes too much time to do multiplication (because of a lack of a multiply
>instruction) why don't you try using a version that DOES have a multiply
>instruction? There must be one out there somewhere. At last look Rockwell
>and
>Western Design Center were still making 6502 variants. In fact WDC had a
>16-bit
>version.
Not much out there to just go and buy unfortunately. Pretty much all
obsolete. (Actually, I don't know of *anywhere* to get a new 6502 that's
pin compatible or close-- 65816 or otherwise.) Winbond had some 6502-like
chips a while back, but I think they were just COB packaged... If I recall,
the Doctor64 used one...
Now if I just won the lottery I'd go buy a core from WDC and make my own for
fun. ;-) You'd think that someone somewhere must have made a 6502 in
Verilog or VHDL for some class project... Should be able to drop it into an
FPGA, but when we start doing that the complexity starts approaching the
"it'll never get finished" level... :-/
-Clay
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Received on Thu Feb 3 17:53:57 2000
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