Colorado Memory Systems Jumperless Tape Controller

[Chuck Guzis]

> Date: Wed, 2 Jul 2008 06:57:09 -0700
> From: "Glen Slick" 

> The Colorado Memory Systems Jumperless Tape Controller 026-328 PCB has
> a copyright date of 1990, which predates the ISAPNP specification by 4
> years so it must use a proprietary configuration method.

Went back through my notes--it's not the FC-10 or FC-20 from Colorado 
that's ISA PNP--it's the Exabyte "Floppy Tape Accelerator", PCB 
317235-000 that's the PNP one.  Circa 1996, using an 82078.  Unlike 
the Colorado, there's no external drive connector.  There are also 
empty pads for what I suspect might be a data compression processor 
chip.

While both the Exabyte and Colorado 2Mb accelerator cards are 
nominally 16-bit ISA, the Exabyte uses only the 16-bit additional IRQ 
lines, while the Colorado uses both the 16-bit data and DMA lines in 
addition to the extra IRQs.  Both cards use 48MHz XCOs.

The brief user documentation for both state that they can be used in 
8-bit slots; but the Colorado specifies that data rates up to 1Mb/sec 
are supported in 8-bit mode. 

For what it's worth...

Cheers,
Chuck