Since a 74LS08 is an AND gate and RESET will normally stay a solid high
during game play, the output should follow the VGRST input. So if VGRST
is pulsing the output should be pulsing, too.
Phil Morris wrote:
> On a Battlezone AVG board there is a DISRST (active low) signal - it's
> produced at pin 8 of the LS08 at location L5, the two inputs are RESET
> (active low) on pin 10 and VGRST (active low) on pin 9.
>
> These are part of the Vector Halt Latch circuit.
>
> My question is this - during *normal* board operation, should DISRST be
> constantly pulsing or, as appears to be the case on my dodgy board,
> constantly high?
>
>
>
>
> Thanks,
> Phil
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Received on Wed Aug 30 15:23:16 2006
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