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Loedown · 12 April 2009, 09:03

Greetings,
I find it both useful and terribly processor specific. Coding for PIC is good, you can define labels for loop points within Microchip's coder,

Code:

           start2          org 0005        
                           clrf    temp0
                           clrf    temp1
                           clrf    temp2
                           clrf    temp3
                           clrf    temp4
                           clrf    temp5
                           clrf    temp6
                           clrf    temp7
                           clrf    temp8
                           clrf    temp9
                           clrf    intcon        ;clears intcon register
                           movlw    b'00000001'
                           movwf    temp7        ;sets temp7 as high bit check
                           movlw    b'00000101'    ;sets timer 1, no prescale
                           movwf    t1con
                           clrw

Was just a chunk of code from the start of one of my projects, I used to love trying to predict the old BEQ and BNE values for branching on 6502, this is where labels really come in handy, so instead of;

Code:

LDA $08
LDX $08
SBC
BNE $03
JMP $FFD2
LDA $40

You can use;

       LDA $08
       LDX $08
       SBC
       BNE JUMP:
JUMP:  JMP $FFD2
       LDA $40

Paul

12 April 2009, 09:03	#58
Loedown Precious & fragile things Join Date: Feb 2009 Location: Victoria, Australia Posts: 1,946	Greetings, I find it both useful and terribly processor specific. Coding for PIC is good, you can define labels for loop points within Microchip's coder, Code: start2 org 0005 clrf temp0 clrf temp1 clrf temp2 clrf temp3 clrf temp4 clrf temp5 clrf temp6 clrf temp7 clrf temp8 clrf temp9 clrf intcon ;clears intcon register movlw b'00000001' movwf temp7 ;sets temp7 as high bit check movlw b'00000101' ;sets timer 1, no prescale movwf t1con clrw Was just a chunk of code from the start of one of my projects, I used to love trying to predict the old BEQ and BNE values for branching on 6502, this is where labels really come in handy, so instead of; Code: LDA $08 LDX $08 SBC BNE $03 JMP $FFD2 LDA $40 You can use; LDA $08 LDX $08 SBC BNE JUMP: JUMP: JMP $FFD2 LDA $40 Paul