mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-26 13:49:18 +00:00
58 lines
1.0 KiB
Plaintext
58 lines
1.0 KiB
Plaintext
PR#3
|
||
PREFIX /A2OSX.BUILD
|
||
LOMEM $A00
|
||
INC 1
|
||
AUTO 6
|
||
*/--------------------------------------
|
||
* # GetArg.A
|
||
* ## In:
|
||
* A = argument index.
|
||
* ## Out:
|
||
* CC : success
|
||
* Y,A = CStr To Arg[A]
|
||
* CS : Out Of Bound
|
||
*\--------------------------------------
|
||
K.GetArg.A pha save requested arg#
|
||
|
||
ldy #S.PS.hARGS
|
||
lda (pPs),y
|
||
jsr K.GetMemPtr.A
|
||
|
||
plx we want 0 ?
|
||
|
||
beq .80 yes, returns MemPtr
|
||
|
||
>STYA ZPPtr1 no, save it
|
||
|
||
.1 lda (ZPPtr1) end of ARG[]
|
||
beq .9 yes, not found....
|
||
|
||
.3 inc ZPPtr1 skip next one....
|
||
bne .4
|
||
inc ZPPtr1+1
|
||
|
||
.4 lda (ZPPtr1)
|
||
bne .3
|
||
|
||
inc ZPPtr1 ....and point to next, or ending 0
|
||
bne .5
|
||
inc ZPPtr1+1
|
||
|
||
.5 dex
|
||
bne .1 stop here....
|
||
|
||
lda (ZPPtr1) at end of ARGS[] ?
|
||
beq .9
|
||
|
||
.8 >LDYA ZPPtr1
|
||
.80 clc
|
||
rts
|
||
|
||
.9 sec
|
||
rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE /A2OSX.SRC/SYS/KERNEL.S.ARG
|
||
LOAD /A2OSX.SRC/SYS/KERNEL.S
|
||
ASM
|