Msg: 7063 *Conference*
04-04-97 19:17:58
From: RON WIESEN
To : COMET _
Subj: REPLY TO MSG #5319 (UNDOCUMENTED 80C85 OPCODES)
Well, I looked at RELOC1.BA in Uploads - line 42 has RST 0 corresponding to op-code CFh which ROM2 disassembles as RST 0 where standard ROM state, and as CSR memadr where option ROM state. I think CFh was one of the several I added to RELOC.BA (in the library) some time back. Might the mnemonic CSR stand for Chip Select of ROMs? - Hmmmm, could be. As to op-code CBh, it's the only op-code without a mnemonic in RELOC1.BA. And I remember that the corresponding mnemonic I left in RELOC1.BA was merely three dashes "---". So the mystery continues Comet. Later