> Alice wrote:
> ....
> >hmm, good thought.  Now is there a nice way to terminate all
> >those lines?  i dug out some 10k sip resistors, but of course
> >the 40-odd pin connector on the mchip project board is not
> >set up to plug them in directly, and i have to be careful
> >with port b because of b3, b6,and b7..
> >Is there an easy way to terminate all the loose lines without
> >doing something to the project board i will regret later when
> >it comes time to tear it out?
>
> sip socket with sip R in the socket.
> =================
ok.  i have cut in half a 40-pin dip gold-plated machine pin
socket and the two halves just fit in the breakout area.

>
> ....
> >
> >      list    p=16F877
> >        __CONFIG   _CP_OFF & _WDT_OFF &  _RC_OSC
> >;&_LVE_OFF<--hates this
> >        include "P16F877.INC"
> >beep_pin        equ     3
> >;-----------------------------------------
> >        nop                                             ;for use by ide
> >        ORG     0               ;Reset Vector
> >         ORG     4               ;Interrupt
> >        bsf     STATUS,RP0
> >        clrf    PORTC           ;portc set output
> >        movlw   b'00000001'
> >        movwf   PORTA
> >        movlw   B'00000110';.6--magic number
> >        movwf   ADCON1  ;???    ;TURN OFF ADC
> >        bcf     STATUS,RP0
> >        CLRF    PORTA
> >        movlw   b'00001000'
> >        movwf   porta   ;no beep here
> >
>
> Am I missing something here, or is this code supposed to be
> located inside the ISR space? [I suppose no interrupts?]
> Also, what did you do with ADCON0? [I suppose it doesn't
> matter here].
I couldnt see that it was required if the port is I/0.
I tried putting a token one in, and it didnt make any difference.
Well, if you want to be accurate, i initially confused ADCON0
with ADCON1 and took awhile to sort that out.
>
> I realize there are POR values in all the regs, but I always
> like to initialize critical regs myself anyway [option, interrupt,
> A/D, etc] - lots easier to modify them to expand the code later,
> and also you don't have to remember what they POR to.
>
This sounds sensible.  Also, it will require that i actually
figure out if there are any POR settings i will regret BEFORE
wasting time trying to track them down afterwards.

> Also, is this all there is? Never tried a program that just
> falls off the end of the PIC, usually put in an infinite loop
> at end.
>
> L1      goto    L1
Well, you dont want all the gory details, but it is part of a
bigger program that isnt working on a 16f84, and is my first
attempt to port to a 16f877 to debug. eventually, there is an
end statement, and lots besides, including a very nice beep
routine that takes the 8-bit adc reading and uses it to vary
the frequency of the piezo so it tonally follows the adc
input.  but until i get porta going, it isnt very fun.
as you know much better than me, the 877 is a lot more
complicated than the f84.
alice