[Coco] A new idea for a CoCoSDC expander

[Kandur]

Wednesday, October 15, 2014, 5:43:51 AM, you wrote:
> On 10/15/2014 3:57 AM, Brian Blake wrote:
>> Video of Tom Gunnison's device:

>> Custom Multi-Pak Interface for the Tandy Radio Sh…:
>> http://youtu.be/zy8WdMEAF5Y

>> His documentation:

>> http://www.tandycoco.com/techdocs/ColorComputerExpansionInterface.pdf

>> It does connect to a CoCo via cable with a card edge connector to a 40 pin
>> socket. Kinda wierd but it works.

> I saw that one as well via Youtube, but didn't immediately see the 
> docs.  Looks easy enough, but could stand to be turned into a CPLD 
> design.  I bet a 8572xl would fit all that TTL.

> JIm

CPLD would be the right way to go, if the TTL stuff would fit in it.
IMHO very few people need to plug in 8 cartridges at once.
Adding a MAX-232 chip would come handy for the Coco 2 and 3s 
providing RS-232 signals, then we could power it with a simple 5V wall-wart.

Kandur