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From: Marko_Mäkelä
Date: 1998-09-16
Subject: Re: 256K RAM expansions
On Wed, 16 Sep 1998, Cameron Kaiser wrote:

> Odd, Dave Haynie didn't mention that. What are the other two pins on the I/O
> port used for?

RTFS. The plus/4 uses the processor's on-chip I/O port mainly for the serial bus.

Marko

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