Embedded processors for DIY projects ?

[Michael Buchstaller]

>The 80750, yes welly welly expencive.
>Other 8051 derivates, no!

In the bginning, it looked like it would be not so expensive; but i learned
the truth later. :-(

>Build your own in a FPGA.

Hrrmppfgh ! Some years ago i had a project together with a friend to biuld
our own processor (TTL-based), but we gave up because we realized that
for the price of parts alone w could get a decent 386 PC, which would probably
run much faster. (That was in 1988 or 89)

>Yes, no1, HC11 welly welly good, 2k is still manufactured
>better availability is a plain HC11 E or F serie with external
>Flash/EEprom

This would sacrifice I/O lines or require this crude address multiplexer chip
(don´t remeber its name), and increase the complexity of the PCB. I want some
1-Chip-solution.

>or step down to the HC08/05 series with 32k Flash.
>They are much easier to get in small quantityes.

This could be better.

>Good luck, your talking ICE and JTAG interface welly welly expencive!!

Not necessarily, some downloaded monitor for debugging like it is possible
woth the HC11 does fine for me; i do not need realtime for that.

>>- The development system should not cost an arm and a leg. I am looking for 
>>a starter
>>   kit in the price range of $300 max.
>
>Millions to chose from!

Maybe, but not all of them are created equally.

>Try PLCC to DIP IC holders welly welly nice, wery simple
>and easy to design around , as easy as dip.

That is what i have been using for my HC11.

>>I mean, for TI, AD or Motorola DSP´s, you often get evaluation boards and 
>>kits for free...
>
>Hmm where do you get that offer??? Interested to know!

Often in some engineering related weekly newspapers (like "Design & Elektronik" here
in germany), they place ads which promise that you could get sample boards with
documentation and such for free from them or their distributors.
But, maybe you have to be a big well-known company (or at least be able to convince them
that your are one) to actually get them.



-Michael Buchstaller