[Coco] DW and 6551

Darren A mechacoco at gmail.com
Tue Feb 10 23:40:34 EST 2015


On Tue, Feb 10, 2015 at 9:26 PM, Stephen H. Fischer wrote:

> It has been ~ 35 years since that was talked about.
>
>
> http://mirrors.apple2.org.za/apple.cabi.net/FAQs.and.INFO/CPUandMore/turboasb.txt
> -------------------------------------
> Why do you need a replacement chip? Simple, the 6551 chip that is on most
> Serial Interface cards has a design flaw in it that causes it to lose a
> character every time the CTS line is switched.
>


The CTS flaw would not affect DriveWire. The protocol is half-duplex with
no hardware handshaking.

- Darren


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