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Tandy PLUS card: LEIA MV-1, what is it?

keenerb

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Mar 11, 2016
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Picked one up off Ebay. Seems to be missing some chips, but I'm curious what it was.
 

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Eudimorphodon

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I will boldly hazard the guess that it’s a serial port. I’ll even go so far as say the missing chips are an 8250 UART and either a 74ls688 or a PAL.
 

keenerb

Veteran Member
Joined
Mar 11, 2016
Messages
786
Location
Georgia, USA
I will boldly hazard the guess that it’s a serial port. I’ll even go so far as say the missing chips are an 8250 UART and either a 74ls688 or a PAL.
Yeah I looked up all those ICs. 1488p and 1489p are some sort of RS232 buffers or something, so I do believe you are correct...
 
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