PET with 8MHz :-)

From: André Fachat <>
Date: Sun, 03 Jan 2010 17:23:12 +0100
Message-ID: <>
Hallo together and a happy new year!

Finally I made it and managed to create a working 65816 board for my CS/A computer. And in fact it runs a patched version of the PET "Fat40" ROM (which makes it eligible for this mailing list :-)

On its page on you can see screenshots where a simple BASIC delay loop is sped up by about the factor 8.

The PET ROM actually works fine at 8 MHz, the "beep" when you start the computer becomes a very short chirp, but as keyboard scanning is done in the 50Hz screen interrupt, this still works too!

The only thing I could not yet test is IEEE488, as my lpt-ieee488 interface is currently broken...


Preisknaller: GMX DSL Flatrate für nur 16,99 Euro/mtl.!

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Received on 2010-01-03 17:00:03

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