Talking about sharing ISA interrupts, has PNP changed any of this?
This would've been a good time to change that situation: specify that
when in level triggered interrupt mode each card provides a pull-up,
and an active-low (if the lines are active-low). The pullup should be
specified to be 1/5th of the minimum requires sink current, allowing
upto 5 pull-up resistors in series: 5 cards can share an interrrupt.
Roger.
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