xAP and embedded devices

[ian.bird@xxxxxxx]

Hi guys

I am getting a little concerned that you are all going PC centric again
and
forgetting the rather meagre abilities of embedded devices.

It has taken me at least a year to get where I am with my IR project.
However, I was starting from scratch and the program is currently running
at
1400 code lines (not comments) of assembler. I think it is time to
review
the target devices again. I don't have the time (or funds) to learn how
to
program another PIC micro let alone another breed like Rabbit, AVR etc.
Ideally I will be using PIC 16F628 chips with 2k program and about 150
bytes
of spare RAM. Using SNAP a packet has about 7 bytes of overhead including
16
bit CRC which I don't have to store as I can process them as they come
in.
The message data I do have to store and rapidly fills my available RAM.
My
RS485 network works at 19200 and I think these displays run at 9600 max
so
some storage is essential. Please bear this in mind. The cost of this
chip
is around 2 to 3 quid, one of its good points.

Personally I see there being lots of embedded devices and relatively
few
applications providing information e.g. one or two PC's ish.

For my own devices I will be looking at KISS in the extreme.

Don't forget a ZX81 is like a CRAY super computer compared to a cheap
embedded micro controller.

Thanks

Ian

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