[Coco] 7 chip 6809 computer

Stephen H. Fischer SFischer1 at Mindspring.com
Wed Feb 25 23:39:43 EST 2015


Mine is old for sure and has only 6 chips

http://www.oldcomputermuseum.com/micro-6502.html

Copyright 1980 John Bell with a 6502 processor.

6502 CPU
6522 VIA
74LS10n
2 x 2114L
6 resistors
6 caps Two special
24 pin gold plated low insertion force socket

2 x 25 Pin edge connector.

John had a lot of boards.

All his schematics were in his catalog, if I run across it ...

Be sure and consider the 6522 VIA, it is a superior chip compared with the 6820.

SHF

----- Original Message ----- 
From: "Joe Grubbs" <jsgrubbs at hotmail.com>
To: <coco at maltedmedia.com>
Sent: Wednesday, February 25, 2015 8:40 AM
Subject: [Coco] 7 chip 6809 computer


> This might be old news, but I stumbled on this today and thought it was pretty clever. It's a simple 6809 computer that is apparently breadboard-able. I want to try it!
> 
> http://searle.hostei.com/grant/6809/Simple6809.html
> 


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