Re: Faster IEEE routines

From: Mike Naberezny <>
Date: Thu, 25 May 2017 10:28:17 -0700
Message-ID: <>
On 5/25/17 10:00 AM, Francesco Messineo wrote:
> the schematic looks not really complete and I can't find a dump of the
> 74S small PROM. 

It is an original schematic, not a reverse engineered one.  It is complete but 
it is unclear in one area around the middle.  That mostly affects some address 
lines and the UART section.  Those lines are not difficult to work out.  A 
dump of the PROM is available in the GitHub repository.  Martin 
Hoffmann-Vetter worked out the equations and they can be found in the 
repository as well.


Mike Naberezny (

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Received on 2017-05-25 18:00:02

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