Please help a new guy get going with a PIC10F222

[mister_e]

if you can, post your code here. We may see few thing to be shrink. Next step.. switch to a bigger one... like 12F675 or my favourite one 12F683.

512 Byte is really easy to fill... worst when using ANY Basic or C compiler.

Unfortunately those baby 10F don't have internal EEPROM... busted!

[Quacker]

I have enough memory for program (512 bytes) but not for data (23 bytes). What I was just thinking of, was to use generic VAR's instead of specific ones, on the theory that if a VAR was used in only a segment of the program, that I might borrow the space and reuse it later in the same progam. Sort of like this example where instead of using a "basket for apples" and a "basket for oranges" I use basket#1 over and over:

start:

Get number of apples
put in basket#1
Divide by number of children and distribute
.
.
.
(Sometime later if I'm really done with the apples)

Get number of oranges
put in basket#1

Divide by number of children and distribute

clear basket#1 (optional)
goto start

My software friend almost fainted at the prospect but in a pinch, it could save me from running out of data memory and thus save the SOT23-6 from becoming an SOIC-8, right?

[mister_e]

still unsure of everything 'round what i suggest, but i guess the EXT modifier could help you on that. Darrel may confirm that thought. I have to experiment around this one when i'll find time... there's still some healling to do here and pending project to finish first

http://www.picbasic.co.uk/forum/showthread.php?t=3891

[paul borgmeier]

Not 100% sure what you are after but ...
Your software guy probably likes code that is well documented and easy to read – don't we all. I do the following all the time when in your situation. I set up a variable that I plan to use locally and then set up an alias to that variable.

Example:

AppleCount var BYTE ; define variable in RAM
OrangeCount var AppleCount ; alias to AppleCount

; early in the program
For AppleCount =1 to 10
Do Something
Next AppleCount
.
.
.
;Latter in the program

OrangeCount = PORTB

Select Case OrangeCount
Case 1
Do something
Case Else
Do something else
End Select

As you can see, the variable is reused and readability is maintained.

Paul Borgmeier
Salt lake City, Utah
USA

[Quacker]

Great Paul,

I set up a number of aliases and it works fine, even when the ram was so full that one more "something VAR BYTE" chokes the compiler.

I'm all set!