On Wednesday 28 September 2005 05:59 am, michael brown scribbled:
> ....  I wrote page-write code for specific Mchip and Atmel
>
> Is there much of difference between them?  I haven't played with this
> stuff since early this spring so I'm a bit rusty on the details.

Actually I'll take that back -- after more research, it appears the 
differences were more about 16k vs 32k, rather than about the vendor.  
Atmel's 16k seems to be the same as Mchip's 16k, etc for the few devices I 
checked.


> > Serial EEPROM's which both work properly with 4.7k pullups (@
> ~100khz),
>
> What clock speed are you using for the PIC?

20Mhz.


> Yep, the no minimum clock speed thingy is nice sometimes.  When I was a
> lad, I clocked my COSMAC ELF (1802 processor) with a 555 timer circuit.
> With an LED to "see" the clock signal, I verified that a machine cycle
> really did take exactly 8 clock cycles.  And it did every time, exactly!
> ;-)

Wow -- serious disbeliever, huh?


> I have to admit that I really don't use the simulator.  It's just
> another big bunch of quirks to keep track of, so I don't bother.

Agreed, and it's considerable setup (relative to the ease of all else), but at 
times it can be useful, and after a week of ripping my remaining hairs out, I 
welcome the simulator.


> There's a simulator for Linux and I hear it's pretty good, but I don't
> personally know.  I typically use an LCD display on my projects for
> debugging.  Serial comms is also handy, but the most useful debugging
> aid is probably an LED.  Well, after the scope anyway.

You probably mean gpsim.  Although I use Linux 99% for my PIC development 
(with gpasm), I haven't tried the sim since I'm doing this under a non-GUI 
environment.

Cheers,
-Neil.




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