Re: Real Time Clock on Cassette Write/Sense lines

From: Gerrit Heitsch <>
Date: Sat, 11 Feb 2012 18:15:55 +0100
Message-ID: <>
On 02/11/2012 05:40 PM, Jim Brain wrote:

> OK, on those units, is READ (going to the 7501 directly) read only, or
> can that port pin be set to output as well?

The 8501 has the same setup as the 6510, a data direction register on 
$00 and a data register on $01. So yes, you can set CAS_RD to output. 
It's P4, motor is P3.


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Received on 2012-02-11 18:00:14

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