17 Jul
2006
17 Jul
'06
3:07 p.m.
On Mon, 17 Jul 2006, Jules Richardson wrote:
Well I've got one here on an 8 bit ISA board - but
slightly worrying is that
it has its own PROM on board,
On an 8 bit ISA board, that is usually (not always) to add support for
"high density" drives (including 8"!!)
and seems to be jumper selectable for an oddball
address (0xC800, 0xCC00, 0xCA00).
The PROM needs address selection to avoid conflict with other add-ons,
such as hard disk.
It's quite possibly a dead-end and will go for
scrap; if it could co-exist
nicely as a second floppy controller that Imagedisk would work with then it'd
be a nice board for adding FM read/write support to my main desktop PC...
In the same heap of boards was another 8 bit card with a Zilog 765 FDC on it,
so that one might be a possibility too (no on-board ROM, but it looks to be
fixed at the PC's primary FDC address - maybe it's possibly to hack some of
the address lines to make it appear at a different address, though)
certainly POSSIBLE