To V20 or not to V20...

[voidstar78]

Ah, I forgot about Battle Chess, that was a nice title - my daughter might like that, she's into chess.

BTW - swapping the chip can change the speed? from 4.77mhz to 8mhz? Just a simple chip swap, no dips or jumpers? Or is it just some efficiency of the chip, makes it effectively like it's running at 8mhz? I just thought the crystal/clock had to be modified somehow, wasn't clear how a chip swap changed the actual rate.

 

[vwestlife]

swapping the chip can change the speed? from 4.77mhz to 8mhz?

No, swapping from an 8088 to a V20 or vice versa does not change the clock speed. The Tandy 1000SX runs at 7.16 MHz.

 

[modem7]

At [here] is an example of a problem that resulted from upgrading an 8088 to a V20.

 

[Chuck(G)]

This is a subject that has been discussed in detail by many publications since 1985. The reasons for the V20 running faster than the 8088 at the same clock speed have also been discussed--even in NEC's own literature. Lawsuits by both NEC and Intel on this chip family have also been detailed.