1 Jul
2008
1 Jul
'08
11:46 a.m.
Date: Mon, 30 Jun 2008 18:53:36 -0700
From: "Glen Slick"
Anyone have any info on a Colorado Memory Systems
Jumperless Tape
Controller 026-328?
It's an 8-bit ISA card with an Intel 82077AA floppy controller. I
have no intention of using this as a tape controller, but wondering if
it would be useful as a floppy controller?
I think I've got that one as well as the 2Mb/sec follow-on one in my
hellbox. IIRC, it sets the DMA/port/IRQ via the ISA-PNP mechanism
(which accounts for the extra logic). If you've got an ISA PNP
inventory program, you can easily verify this. An early version of
PNP, but later ISA-equipped PCs support it via BIOS and there is
usually some sort of manual configuration program for those that
don't.
Otherwise, it's pretty much a garden-variety floppy controller,
though I don't recall if all of the ancillary signals are brought out
to the connector (e.g., DISK CHANGE).
Depending on the exact date code and stepping of the 82077, the card
may or may not support writing FM-encoded data.
Cheers,
Chuck