Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

Jim Brain brain at jbrain.com
Tue May 2 22:11:16 CDT 2017

On 5/2/2017 6:07 PM, Peter Cetinski via cctalk wrote:
>> Is the file for the PAL available to program new ones?  If the items are not registered, I can read out the equations.
> Theses PAL equations specifically to allow the 6Mhz board to run Xenix 3 do not exist AFAIK.  I do have a PAL upgraded board but have not yet verified if it works.  If there is a way to safely reverse engineer the PALs, I might consider trying.
If they are 16L8s or similar, they can be easily reverse engineered with 
an EPROM reader and Logic Friday.  I picked up the eBay PAL upgraded 
boards, so I will see when they arrive.



Jim Brain
brain at jbrain.com

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