27 Apr
2005
27 Apr
'05
2:45 p.m.
Can someone recommend a freeware 6802 disassembler. The Micro General
postal scale that I have (circa 1983) has a 6802 processor with five
27c64 Eproms. I've copied the eprom binarys to disk, and now want to see
what the program does. It has lost its calibration (the backup battery
died) and upon replacing the battery, it is calling for a calibration
and I've not been able to find any informaton on the web regarding how
to calibrate the scale. So it looks like time to do it the hard way :).
Thanks!
27 Apr
27 Apr
3:07 p.m.
same as a 6800 dissembler ;)- no new instructions. just 128 bytes ram.
show be able to find tons by google - even a nice simulator to load
and single step would be handier to do what you want. You'd need
to guess where the IOs are mapped - maybe interfaced through a 6820
or directly to the clock chip. see for eg
http://fie.engrng.pitt.edu/fie95/3b3/3b33/3b33.htm
here's a unixish one.
http://www.geocities.com/TheTropics/Harbor/8707/simulator/sim68xx/sim68xx.h…
cheers -h
"Marvin Johnston" <marvin at rain.org> wrote
Can someone recommend a freeware 6802 disassembler.
The Micro General
postal scale that I have (circa 1983) has a 6802 processor with five
27c64 Eproms. I've copied the eprom binarys to disk, and now want to see
what the program does. It has lost its calibration (the backup battery
died) and upon replacing the battery, it is calling for a calibration
and I've not been able to find any informaton on the web regarding how
to calibrate the scale. So it looks like time to do it the hard way :).
Thanks!
6:28 p.m.
Can someone recommend a freeware 6802 disassembler.
Well, I have a multi-machine disassembler that supports a half-dozen
CPUs now. The 6800 is not one of them, but it would be fairly easy to
add. If anyone can send me a sufficiently precise description of the
6800 instruction set, I'll be happy to write the necessary code.
ftp.rodents.montreal.qc.ca:/mouse/disas/src for those interested.
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participants (3)
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h.wolter＠sympatico.ca -
marvin＠rain.org -
mouse＠Rodents.Montreal.QC.CA