[Coco] HDS Floppy Controller

[Arthur Flexser]

Here you go, Mark:

The ABC jumper selects between ROM sockets A (24 pin) and B (28
pin)--AB=socket A; BC=socket B.

The other 2 jumpers affect the 28-pin socket B, which may be set to accept
either a 28-pin ROM or a 24-pin one (by leaving pins 1, 2, 27, and 28 with
nothing plugged into them).  The DEFGH jumper handles that:  Connect EF
and GH for 28 pin operation, DE and FG for 24.  Under 28-pin operation,
IJK selects ROM capacity: IJ for a 2764, JK for a 27128.

Art


On Sat, 22 Nov 2003, Mark Marlette wrote:

> 
> 
> Does someone have the jumper settings for the HDS floppy controller? The 
> one I have has the following jumpers in groups.
> 
> A,B,C
> 
> D,E,F,G,H
> 
> I,J,K
> 
> Any help would be appreciated.
> 
> Thanks,
> 
> Mark
> Cloud-9
> 
> 
> 
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