4 Jun
2001
4 Jun
'01
9:38 p.m.
You may find that the Versafloppy has an eprom with Z80
code which your 8080
won't like. If you have a Z80A board and 64K of RAM available you need only
figure out what the console for which the code in the EPROM was written would
be. I've got several SD boards, but no FDC, and I really don't know whether
these boards work or not, but I do believe that one popular configuration was
with the SD Sales VDB8024 board, to which one attaches a parallel
keyboard. If
your doc's suggest that's what the EPROM supports, perhaps I can
help by lending
you that board. I may even have a keyboard that is set up for the VDB8024.
Actually, the board looks rather flexible, which I guess
accounts for it's name. It's jumper selectable for two different
port address ranges (63H - 67H or E3H to E7H), CPU selection (Z-80,
8080, or 8085), 5 different interrupt handling modes and 7 different
drive selection modes, including for use with CDC9404 and 9406 drives
with a special cable, as well as support for both 8" and 5-1/4"
drives. I do have another S-100 system based on a Z80 but it's built
around a North Star floppy system and I'd just as soon leave that one
as-is. It has a homebrew ROM monitor.
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757