17 Jul
2006
17 Jul
'06
5:28 a.m.
Chuck Guzis wrote:
To my somewhat jaundiced eye, the UM8398 looks to be
yeat another
integration of the NEC 765 with some support circuitry. I think I've even
got one of these on an ISA board and it looks for all the world like a
plain-jane PC/AT style controller.
Well I've got one here on an 8 bit ISA board - but slightly worrying is that
it has its own PROM on board, and seems to be jumper selectable for an oddball
address (0xC800, 0xCC00, 0xCA00).
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)
cheers
Jules