Re: Burn in/Diags

From: Gerrit Heitsch <>
Date: Sun, 05 Feb 2012 21:37:29 +0100
Message-ID: <>
On 02/05/2012 08:16 PM, Rob Clarke wrote:
> Certainly all the 8501's are killed by heat, they get ridiculously hot.
> Bil Herd recalled that there may have been a resistor on the chip mask
> that should not have been there which was to blame.

Hm... The 8501R1 from 1984 I have don't feel so hot though.. At least 
not compared to a 6569 or 6510... I put a heatsink on them anyway, just 
to be sure.

The newest 8501 I have is a 8501R4 from 4986. Yes, R4. This one is not 
in use yet as long as I have others.


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