Re: Success - first hires graphics ;)

From: Mike Stein <*mhs.stein_at_gmail.com*> Date: Fri, 8 Sep 2017 15:02:23 -0400 Message-ID: <3FA0BD7A12304B538DB7DE00C5203EEE@310e2> · mhs.stein_at_gmail.com

I  think so; as a matter of fact this is the issue that prompted you to make that adapter, although IIRC the issue then was with positive chip selects in an 8050 drive.

m

----- Original Message ----- 
From: "Jim Brain" <brain@jbrain.com>
To: <cbm-hackers@musoftware.de>
Sent: Friday, September 08, 2017 1:33 PM
Subject: Re: Success - first hires graphics ;)

> Could one use the 23XX Adapter design I created to sidestep the issue? 
> It uses a '138 to allow any combination of up to 3 signal lines being 
> either high or low to enable the EPROM.
> 
> That would allow flipping the polarity of the NOROM signal. It might be 
> overkill on this specific use case, but perhaps not.
> 
> Jim
> 
> 
> 
> 
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