I seem to remember that 99% of the time it was fine, but ocassionally i would come across a pcb where it might crash or the vectors might get messed up in game mode. I seem to remember this one only maybe 1 or 2 pcbs out of 20? When i come across pcbs that wont run UUT, i don't panic over them too much, because it doesn't affect any other diagnostic function (i use a 9100A) The other games that wont run UUT are later multiple-cpu type stuff, but i do get it a lot with 68000 games, again, i don't worry about it too much, just something to bear in mind. FWIW - i've never seen a fluke pod with a non-twistedpair cpu cable, and i've seen tonnes of the blighters. Andrew Welburn http://www.andys-arcade.com On 20/02/2013 04:14, David Shoemaker wrote:
Been a while but I am pretty sure I was able to run mine tempest with mine.
-----Original Message----- From: techtoolslist-bounces@flippers.com [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Clay Cowgill Sent: Tuesday, February 19, 2013 7:02 PM To: 'Technical Tools Mail List' Subject: Re: [Techtoolslist] RASTER: FW: Using 8080 pod on Midway8080 boards (Space Invaders)
We have seen a failure of a 6502 pod such that the address driver line was "weak" and couldn't always drive successfully drive the pin above the TTL threshold. That same pod would pass its own self test, presumably because the loopback inputs of the pod have higher impedance than the target board address lines. Perhaps something like that is happening here?
Out of curiosity, has anyone successfully run Tempest from the 6502 pod? I never had any trouble using one to poke around in memory and test stuff (way back with the Tempest multigame), but my Tempest machine would never 'run' from the 9010. Tried a couple different CPU's and maybe even a 9005, but I only had one 6502 pod... Never really knew if it was just my machine, the pod or both...
-Clay
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