Re: Fluke on Universal Boards (Cosmic Alien etc.)

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You know that you can turn off some of the error messages for the Fluke?
Sometimes there is a Watchdog Reset that can give results like that. What
is the speed of the Z80 in the game? Is it a straight Z80 or an "A" or "B"?
I have a Z80 pod that is named Z80AA, I winder if it is faster than the
standard Z80 pod. The code for it is a bit different, but it looks the same
inside...on a cursory glance...don't recall the speed of the Z80 mind
you...I think it was an "A"

John :-#)#

At 03:23 PM 1/18/01, Peter Davies wrote:
>I wonder if anyone can throw any light on a strange problem
>I'm having when I connect the Fluke 9010a up to a Universal Cosmic Alien board
>
>:- I connected up a 'known to be good' cosmic alien board in order to learn
>the rom locations, sig's, ram locations,etc. the board has a Z80 processor
>and uses
>for main mem 8 x 4116's Drams. The value of the XTAL is 10.816Mhz.
> When I switched on after connecting up i received an error message POD
>TIMEOUT ATTEMPTING RESET. this error is usually a sign of bad or missing clock
>although it can be other faults. After much faffing about and getting no-where
>i decided to change the Xtal for an eight mhz one and although I cannot run
>the game with this in it did allow me to me to get the information and by
>doing the same to a non working board allowed me to troubleshoot and
>repair it.
>
>What is going on?? is there anything I can do that would enable me to run
>the UUT with the slower xtal as it make it difficult to know if it is
>working properly
>without keep changing th xtals back and forth.
>
>Any help would be greatly appreciated on two counts one:- to improve my
>knowledge base 2. I now have a Magical spot doing the same but changing
>the atal this time does not work the boards are very similar BUT.......??
>
>Regards Pete (invadar)
>
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Received on Thu Jan 18 16:25:40 2001