15 Mar
1999
15 Mar
'99
8:59 a.m.
I asked about buying a copy of muMath for the Apple ][.
Derek Peschel <dpeschel(a)u.washington.edu> replied:
I didn't know there was an Apple version! I am
now more interested in
finding a copy than selling one to you. :)
Great. Thanks. :-)
The Apple ][ version came with its own operating system, ADIOS (Apple
Disk I/O System). It was a CP/M-like OS but ran on the 6502 (no Z-80
card required).
According to one of the authors, the the Apple ][ versions of muMath and
muSimp were created by taking the interpreter source code for the 8086
version, and doing a translation of each 8086 instruction into a sequence
of 6502 instructions. The 8086 registers were in the 6502's zero page.
As you might expect, this approach didn't exactly yield blazing speed.