AVR-Chat

Robert Adsett schrieb:
> It sounds more like an application for a FIFO or a dual port RAM.  FIFO 
> would be better for a buffer type scheme and dual-port for a mailbox type 
> scheme.  Both types would take care of most of your timing issues without 
> much need for additional handshaking.

Interesting, I didn't think about FIFOs before. Are there any readily 
available and affordable parts that inplement a fifo? The 16x5bits of a 
74x225 that I found in a quick search are not deep enough.
2x FIFO or a mailbox scheme would both be sufficient if something like 
at least 0,5-1Kbytes per direction are available. The more the better, 
of course.

On the dual port RAM search I did a while ago, the available parts from 
one of my standard suppliers were all Cypress chips. 1Kx8 for >5€/piece 
is far beyond a resonable price for my application.

If I go for some more space I come to price regions where a small FPGA 
would be affordable - that would have enough RAM in its logic cells 
alone... (using programmable logic for the board discussed here is not 
an option for political reasons).

Regards,
Philipp