Control a Radio PLL with a PIC

[mister_e]

CHSEL VAR PORTA

This will assign the whole PORTA, all the time to chsel variable... it's a simple alias. Still, it's the WHOLE PORTA reading, you still need to remove the bit you don't want/need.

If you want to assign a single pin to a variable
A_SINGLE_PIN VAR PORTA.0

As far as I'm aware of, there's no shortcuts. Bitwise & Logical mask/operations are indeed listed in the manual, not explained as it's a basic knowledge you should already be aware of when programming. Case not, there's Wikipedia & Google
http://en.wikipedia.org/wiki/Bitwise_operation
http://www.ralphb.net/IPSubnet/logical.html
and so forth

[mister_e]

chsel var byte
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'
'
'
chsel = (PORTA>>1) & $0F

this read PORTA, shift the whole value one place to the right (to remove PORTA.0), then isolate the 4 lower bits.

[RayL113]

chsel var byte
'
'
'
'
chsel = (PORTA>>1) & $0F

this read PORTA, shift the whole value one place to the right (to remove PORTA.0), then isolate the 4 lower bits.

Ok, so let's say then, that I don't use the lsb as the toggle pin, and use 0 thru 3 as my 4 input bits, would the command be chsel = (PORTA) %00001111 ??
Or am I missing the point?

[mister_e]

Really close
chsel = PORTA & %00001111
you're on the right direction!

[RayL113]

Really close
chsel = PORTA & %00001111
you're on the right direction!

Thanks! I'll give that a try.

[RayL113]

That worked! Thanks again.
Have another little snag.
It doesn't like my Peek command syntax.
Get this error; ERROR Line 27: Bad expression.27: Syntax error

Here is line 27; PEEK CHSEL CHSELVAR 'Line 27, Look at the 4 input pins from the channel selector and put in CHSELVAR

It appears that I'm not inputting the Peek command correctly. Anyone familiar with this command?