At 13:05 7-6-01 +0200, you wrote:
>Oh, that is relatively easy.
>
>You need address A0-A7 decoding (with chips like 74LS138 or 688) combined
>with RD, WR, IOREQ, MI etc. to select a i/o address range and feed that
>select signal in the cip (like vdp) select input (which will put the
>databus of the chip from tristate to active when in read).
>
>And if the chip has more addresses then you need the A0-An feeded to the
>chip also.
>And the databus of the chip connected to the slot databus. Avoid dataline
>buffers, most of the time they will introduce nasty delays.
>
> And feedback to busdir if you do a read!
Are you going to work on a new mass-produceable project here? There could
be some kind of market here, though I think little hardware producers will
actually us it.
GreeTz, BiFi
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