Re: PET with 8MHz :-)

From: Matthew Hudson <hexsane_at_gmail.com>
Date: Sun, 3 Jan 2010 10:38:12 -0600
Message-ID: <7e75d4111001030838i245b3fb9x54495b09c9a50b15@mail.gmail.com>
Since IEEE-488 is dependent upon hand shaking it should work fine.

-Matt

On Sun, Jan 3, 2010 at 10:23 AM, "André Fachat" <afachat@gmx.de> wrote:

>
> 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 http://www.6502.org/users/andre/csa/cpu816/index.html 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...
>
> André
>
> --
> Preisknaller: GMX DSL Flatrate für nur 16,99 Euro/mtl.!
> http://portal.gmx.net/de/go/dsl02
>
>       Message was sent through the cbm-hackers mailing list
>


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Received on 2010-01-03 17:00:27

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