Re: Char-ROM replacement

From: Jim Brain <*brain_at_jbrain.com*> Date: Thu, 20 Sep 2012 12:32:40 -0500 Message-ID: <505B5338.8090001@jbrain.com> · brain_at_jbrain.com

On 9/20/2012 12:00 PM, Gerrit Heitsch wrote:
> Hello,
>
> since I had a C64 char ROM (901225-01) go bad this year, I was looking 
> for a replacement. The pinout of the ROM matches the 2532 EPROM, but 
> the only one I had was 450ns and that's too slow. I tried it, but all 
> I got was a snow storm at power up.
>
> Then I found a few TMS2532-30 on ebay and got around to try 2 of them 
> today. Those are fast enough, you get the expected picture at power up.
>
> So, we have a verified drop-in replacement for the char ROM. The 2532 
> is NMOS so it will get warm, but you don't need any adapter, just 
> program it, and plug it into the socket. 
How was the price?  I had to make the 23XXAdapter because I couldn't 
seem to locate at 2332/2532s at reasonable prices.

Jim


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