21 Apr
2002
21 Apr
'02
5:45 p.m.
Richard Erlacher wrote:
I'll check with a friend of mine who's an
Altera agent, but ALTERA certainly
has a CPLD solution to that problem. I think the JTAG<=>parallel-port
solution is more appealing for someone in your situation, however, since you
can use a backup battery to keep it alive and you can reload it from your PC.
BTW, if you are designing your own hardware, wouldn't it make sense to do what
that microcontroller would do in some sort of hardware? All you have to do is
address the standard EPROMS and serialize their output in sync with the FPGA's
signals to what it thinks is the serial PROM.
Well I need a mail order supplier to CANADA thus that rules out ALTERA.
I may even NOT use Xlinix CPLD's because I like the idea that with TTL I
don't need any programing DONE. The price of PCB's and low cost TTL is
about
the same as using higher cost chips. I might use 2901's from B.G.Micro
as they
are cheap ($1.50) but does anybody know of the original data sheets of
the web
in pdf form?
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html