[Techtoolslist] Finally - a use for the TMS9900 pod!

John Robertson jrr at flippers.com
Sun Jun 30 22:03:36 EDT 2024


It turns out that Universal used the TMS9981 CPU in Cosmic Guerilla - 
someone sent the board to me to service. I haven't checked if there are 
any other Universal games that ran that CPU.

Interesting that TI reversed the order of the addresses and Data lines 
from what is now the convention. Their D0 is most folks D7! Our A0 is 
TI's A13 on the 9980/81...

Need to see if I can make a simple adapter 9900 <--> 9981, unless 
someone made one and is willing to sell me a copy...

Thanks!

John :-#)#

-- 
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