A2osX/SYS/KERNEL.S.ARG.txt

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PR#3
PREFIX /A2OSX.BUILD
LOMEM $A00
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INC 1
AUTO 6
*/--------------------------------------
* # GetArgC
* Returns argument count in the process command line.
* ## In:
* none.
* ## Out:
* A = Command line Arg Count (Including /path/cmd)
*\--------------------------------------
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K.GetArgC jsr ARG.InitArgPtr1
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ldx #0
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.1 lda (ZPPtr1)
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beq .8
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jsr ARG.NextArgPtr1
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inx
bne .1
.8 txa
rts
*/--------------------------------------
* # GetArgA
* ## In:
* A = argument index.
* ## Out:
* CC : success
* Y,A = PStr To Arg[A]
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* CS : Out Of Bound
*\--------------------------------------
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K.GetArgA sta .2+1
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jsr ARG.InitArgPtr1
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lda .2+1
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beq .8
ldx #0
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.1 lda (ZPPtr1)
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beq .9
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.2 cpx #$ff Self Modified
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beq .8
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jsr ARG.NextArgPtr1
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inx
bra .1
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.8 >LDYA ZPPtr1
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clc
rts
.9 sec
rts
*--------------------------------------
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ARG.InitArgPtr1 ldy #S.PS.hCMDLINE
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lda (pPs),y
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jsr K.GetMemPtrA
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>STYA ZPPtr1
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rts
*--------------------------------------
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ARG.NextArgPtr1 lda ZPPtr1
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sec
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adc (ZPPtr1)
sta ZPPtr1
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bcc .8
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inc ZPPtr1+1
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.8 rts
*--------------------------------------
MAN
SAVE /A2OSX.SRC/SYS/KERNEL.S.ARG
LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM