>
> Jesse,
>
> One thing that might be nice is a simple interface for driving a
> multiplexed 8-bit I/O bus. I use a Wilke Technology TinyTiger in
one
> of old products, and it implemented this type of bus which allowed
I/
> O expansion as well as driving a T6963C? Graphic LCD. Using this
> structure it was easy to add digital inputs/outputs using simple
tri-
> state buffers and latches. This could also form the basis of a
simple
> bus to add another CPLD or FPGA on an expansions card...
Interesting. One thing about this board is Bob didn't route me many
address lines to the CPLD on the TS7400 so I'm not sure I could do
one CPU bus cycle -> one simple-bus cycle, but it definitely could be
done with 2 (address register + data register) I'll look into this
one, thanks Peter. I could even give the simple-bus an IRQ pin and
DMA pin....
>
> Also, some form of enhanced SPI with multiple chip selects would be
> nice.
We were actually discussing this earlier. Is there a particular
reason one couldn't use the EP9302 SPI controller and GPIO's as chip-
selects? You can daisy chain SPI and the only device driving the MISO
signal should be the one selected by the GPIO.
//Jesse Off
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