jhalbrecht
Experienced Member
For use in my Imsai FIF project.... I'm attempting to run Martin's MEMON80 monitor from an AM2716DC EPROM placed at the top of a 64k COEX (Tanner/ Digital Research) Static RAM board. I burnt the EPROM with an ME2700. I put the ORG at F800 The eprom appears to match the .PRN. I took an educated, perhaps WAG, guess and placed the EPROM in position X31 and moved the associated jumper from RAM to ROM. I placed it in the Imsai 8080 and examined F800 which didn't look like the monitor and I could deposit to the location. I'm guessing X31 is not the top of the 64k address space.
Any suggestions?
Interesting the slight variations of this board. Digital Research, Tanner, Coex... This board doesn't have the RAM/ROM at every position like others do.
Any suggestions?
Interesting the slight variations of this board. Digital Research, Tanner, Coex... This board doesn't have the RAM/ROM at every position like others do.
Code:
F800 = MEBASE equ 0F800h ;Base address of Memon/80 code
; ...
F800 org MEBASE ;Memon/80 ROM start
F800 F3 MEINIT: di ;(00)Cold-start entry point
F801 AF xra a ;So code can recognize Memon
F802 57 mov d,a ;and we have a spare 0 around
; ...