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hi,<br><br>
it's Prime Macro Assembler - the language of (now non-existant) Prime
Computers.<br><br>
we would fat-finger this little diddy on the control panel to see if the
newly-assembled machine thought it was a computer - as opposed to a bunch
of parts just recently put together.<br><br>
it would read the console switches (device address 1620) , output them to
the LEDS (device address 1720 on the control panel), and just keep
on doing it. flip a switch, light a LED.<br><br>
(you're still a geek, but you're in good company :-)<br><br>
- adm -<br><br>
At 05:31 PM 6/15/2004, you wrote:<br>
<blockquote type=cite class=cite cite="">> 1000: INA 1620<br>
> 1001: OTA 1720<br>
> 1002: JMP 1000<br>
><br>
> ....those were the days.<br>
><br><br>
*sobs* I am _such_ a geek.<br><br>
If you're after 6502 code, you missed. :) OTA and INA are not
valid<br>
opcodes and even if they were, your addressing is off. :) The
instruction<br>
is one byte and the operands are two bytes, so assuming OTA and INA
_were_<br>
valid, you'd have:<br><br>
1000 INA $1620<br>
1003 OTA $1720<br>
1006 JMP $1000<br><br>
Which if course would be an endless loop and you'd lock the machine up.
:)<br><br>
<br>
g.<br><br>
*wanders away mumbling about indirect addressing modes and cursing
Chuck<br>
Peddle...*<br><br>
<br><br>
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<hr>
<br>
Alan D.
Mazurka
adm.design@verizon.net <br>
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