[Coco] CoCo keyboard connector

[Stephen H. Fischer]

Hi,

It may take a little work, as Maltedmedia still is being organized.

ftp://maltedmedia.com/coco/MANUALS/TANDY/HARDWARE/

is the starting point to look.

ftp://maltedmedia.com/coco/MANUALS/TANDY/HARDWARE/TANDY_HW/COCO/Color%20Computer%203%20Service%20Manual%20(19xx)(Tandy)(pdf).7z

That is the CoCo 3 one but I did not find the CoCo 2 one.

I think that they are also somewhere else on the Web.

SHF


----- Original Message ----- 
From: "Bruce W. Calkins" <brucewcalkins at charter.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, March 02, 2012 4:26 PM
Subject: Re: [Coco] CoCo keyboard connector



>

>

> ----- Original Message ----- 

>

> From: "Allen Huffman"

>

>> Hey, is there a tech manual online somewhere? I'm interested in how the 

>> CoCo keyboard connector works. I know it went to a thin mylar connector 

>> for the CoCo 3, but wasn't it a ribbon cable for the CoCo 1?

>>

>> Are the CoCo keys just switches, that open/close contacts and it's read 

>> as an X by Y matrix of switches?

>> -

>> Allen Huffman -

>

>

>

>

>

> The thin Mylar connector came out with the "283" "F" board CoCo 1 and 

> continued through the 2 and 3.  The keyboard was a 7 by 8 matrix of SPST 

> momentary contact switches.  I rebuilt two "real" keyboards for my "E" 

> board CoCo 1.  I actually wore out the first.

>

>

>

> Bruce W.