8080 vs. 8080A

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Mon Oct 1 17:23:57 2001

From: Carlos Murillo <cmurillo_at_emtelsa.multi.net.co>

>At 11:07 PM 9/30/01 -0600, you wrote:
>>8085, at least, doesn't require three supplies. I don't know why they
>>all those pins on things like the pseudo-serial I/O and all those
>>Hardly anyone ever figured out how to use them well. It would have
been more
>>sensible to put the 8 address lines there and save the external latch
and the
>>strobe for it.
>Those irq's are exactly why I liked the 8085. Extremely simple
>to use. Appropriate for early embedded stuff.

that is the exact reason why the 8085 was successful. As to the comment
about the SIO/SID pins they were used by the TU58 for serial data and
very hand for when a few bits of IO were needed for simple things.

Received on Mon Oct 01 2001 - 17:23:57 BST

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