Central Point Option floppy controller

From: Don Maslin <donm_at_cts.com>
Date: Wed Sep 15 15:54:33 1999

On Wed, 15 Sep 1999, Mike Ford wrote:

> Given the current discussion, has anyone looked the Central Point "copy
> card" floppy controller over?

First off, it is not a controller, per se, but rather a bridge adapter
that goes between the ISA FDC and the floppy drive and enhances the FDC's
native capabilities.
 
> I am looking at one of mine right now, and to my limited "PC" eyes it seems
> fairly normal. Barely the length of a short ISA slot, with fingers on a
> edge connector as well as a set of header pins for the floppy drive cable.
> It has one main chip:
>
> Transcopy 3 c CPS
> TC19GO32AP-0036
> Japan 8819EA! the ! could be just a vertical line.
>
> Its about 8051 sized, maybe 60 pins. There is a 48 khz crystal, and a 1987
                              ^^-64

> copyright. Two sets of jumpers seem to select between PC/XT and AT/Compaq,
> another set looks like DMA1 or DMA2.

The PC/XT and AT/Compaq jumpers simply determine whether the header or the
card edge connector is the output so as to match the drive cable.
                                                                                                
> Remaining chips are a LS245 to the ISA bus, a 7406 by the PC/XT jumpers,
> and a 8812S UM8326B next to the crystal.
>
> This is one of the cards I check every old PC I see for.
>
>
>
                                                 - don
Received on Wed Sep 15 1999 - 15:54:33 BST