--- In "Jesse Off" <> wrote:
>
> --- In "PeterElliot" <egroups@> wrote:
>
> > One thing that might be nice is a simple interface for driving a
> > multiplexed 8-bit I/O bus.
>
> Peter, this idea was the winner. :-) The TS-7400 now by default
has a
> simple 8-bit multiplexed bus that can be used on some of the DIO
lines.
> There is a 8-bit address register and 3 programmable polarity
strobes
> signals (ALE, RD, WR). You can use the remaining DIO's either as
> predecoded chip-selects, address bits 8 and higher, or as standard
> GPIO unrelated to the general purpose bus... We made sure the
timing
> was such that the multiplexed bus could be turned into an
> ISA/unmultiplexed style bus with the simple addition of an external
> (~$0.35) 74HC373 8-bit latch. This bus can actually be made to run
> faster than our PC104 bus's and acheive data rates greater than 10
> megabytes/sec!
>
> Thanks for the great idea!
>
> //Jesse Off
>
So what's the prize ;-)
The TS-7400 might be useful for me in the future if I can add a CPLD/
FPGA driven I/O card to this new bus.
PJE
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