IBM PC Connecting to DECNET

[Glen Slick]

On Fri, Jun 3, 2022 at 5:41 AM Bill Gunshannon via cctalk
<cctalk at classiccmp.org> wrote:
>
> Is there a schematic anywhere for the hockey puck mice?

Don't know if there is a VSXXX-AA mouse schematic anywhere.

There is a DEPCA print set:
http://www.bitsavers.org/pdf/dec/ethernet/depca/MP02421_DEPCA_sch_May87.pdf

Page 33 of the PDF has the DEPCA side of the mouse interface.
7-pin connector:
(1) Ground
(2) RX Data to DEPCA (goes to 9639 Dual Line Receiver)
(3) TX Data from DEPCA (comes from 9636 Dual Line Driver)
(4) -12V
(5) +5V
(6) +12V
(7) N/C

http://www.bitsavers.org/pdf/dec/ethernet/depca/EK-DEPCA-PR-001_Apr89.pdf
DEPCA Hardware Reference Manual, EK-DEPCA-PR-001
Chapter 3, Mouse Information details the mouse communication protocol