Msg: 5280 *Conference*
08-05-94 15:31:35
From: RON WIESEN
To : COMET _
Subj: UNDOCUMENTED 80C85 OPCODES
I'm not sure if you mean undocumented per ROM2 manual or per some other source. I recently sent an updated version of RELOC.BA to the library here (believe I named it RELOC2.BA) and I remember seeing it (perhaps in UPLOAD section) here later. It, and a related .DO file, reflect some undocumented (and mishandled by RELOC.BA) 80C85 opcodes. Perhaps it will document a few of the opcodes you're interested in. Sorry my memory is so bad. I'll look at my cheat sheets for ROM2 and see what documentation of opcodes I have. I do remember that ROM2 has a pseudo-op that it expands as a pair of instructions...now what was the it??? Again, bad memory. Guess Agent Orange is getting to me. I think the pseudo-op was MVX (MoVe eXtended register pair) and there is no corresponding 80C85 instruction. ROM2 assembles a pair of MOV instructions. E.G., MVX B, D is assembled as MOV C, E and MOV B, D instruction pair. I'll be logging in here more often for next two weeks, then I think I'll be on the road again. In case your an Amateur Radio operator like me, I chat with friends each day while on road to work (1 hour/60 miles). We only use Morse Code, not voice, and frequency is 7.058 MHz in 40 Meter band. My callsign is WD8PNL. Each day while traveling in the car I sign "mobile in 4th region" via callsign WD8PNL/M4. So feel free to break-in on our group: W4EQE, N8GDO, WA4MCC, KB4ULR, N5CTO, and a few others. W4EQE keeps things organized and is on frequency from appx 6:00 AM EST to 7:45 AM EST. We frequently hear and answer West Coast stations at this time (3:00 to 4:45 AM PST). So if you're an early riser, give us a call.