A2osX/SYS/KERNEL.S.SHARED.txt

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NEW
AUTO 3,1
*--------------------------------------
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SHARED.IsIDValid
cmp #'.'
beq SHARED.IsDigit.8
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cmp #'_'
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beq SHARED.IsDigit.8
SHARED.IsDigitOrL
cmp #'z'+1
bcs SHARED.IsDigit.RTS
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cmp #'a'
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bcs SHARED.IsDigit.8
SHARED.IsDigitOrUC
cmp #'Z'+1
bcs SHARED.IsDigit.RTS
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cmp #'A'
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bcs SHARED.IsDigit.8
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jmp ZP.IsDigit
SHARED.IsDigit.9
sec
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rts
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SHARED.IsDigit.8
clc
SHARED.IsDigit.RTS
rts
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*--------------------------------------
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SHARED.IsHexDigit
jsr ZP.IsDigit
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bcc .8
cmp #'A'
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bcc SHARED.IsDigit.9
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cmp #'F'+1
bcc .1
cmp #'a'
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bcc SHARED.IsDigit.9
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cmp #'f'+1
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bcs SHARED.IsDigit.RTS
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eor #$20
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.1
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* clc
sbc #'A'-11 cc so A->10 (11-CC)
clc
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.8 and #$0F
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rts
*--------------------------------------
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SHARED.TXTPTR.GetY
sta CLRREADAUX
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lda (TXTPTR),y
sta SETREADAUX
rts
*--------------------------------------
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SHARED.TXTPTR.GetNext
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sta CLRREADAUX
lda (TXTPTR)
sta SETREADAUX
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beq SHARED.RTS
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SHARED.TXTPTR.Next
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inc TXTPTR
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bne SHARED.RTS
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inc TXTPTR+1
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rts
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*--------------------------------------
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SHARED.FORPNT.getY
sta CLRREADAUX
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lda (FORPNT),y
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sta SETREADAUX
rts
*--------------------------------------
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SHARED.FORPNT.PutY
sta CLRWRITEAUX
sta (FORPNT),y
sta SETWRITEAUX
rts
*--------------------------------------
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SHARED.FORPNT.GetNext
sta CLRREADAUX
lda (FORPNT)
sta SETREADAUX
bra SHARED.FORPNT.Next
*--------------------------------------
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SHARED.FORPNT.PutNext
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sta CLRWRITEAUX
sta (FORPNT)
sta SETWRITEAUX
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SHARED.FORPNT.Next
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inc FORPNT
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bne SHARED.RTS
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inc FORPNT+1
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SHARED.RTS rts
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*--------------------------------------
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SHARED.GetCharPtr1
lda (ZPPtr1)
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beq SHARED.RTS
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inc ZPPtr1
bne .8
inc ZPPtr1+1 never Z
.8 rts
*--------------------------------------
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SHARED.AddYp1ToPtr1
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sec
.HS 90 BCC
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SHARED.AddYToPtr1
clc
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tya
adc ZPPtr1
sta ZPPtr1
bcc .8
inc ZPPtr1+1
.8 rts
*--------------------------------------
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SHARED.AddYp1ToPtr2
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sec
.HS 90 BCC
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SHARED.AddYToPtr2
clc
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tya
adc ZPPtr2
sta ZPPtr2
bcc .8
clc keep CC as some JMP exit here
inc ZPPtr2+1
.8 rts
*--------------------------------------
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SHARED.GetCharPtr2
lda (ZPPtr2)
bne SHARED.NextCharPtr2
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rts
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SHARED.PutCharPtr2
sta (ZPPtr2)
SHARED.NextCharPtr2
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inc ZPPtr2
bne .8
inc ZPPtr2+1
.8 rts
*--------------------------------------
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SHARED.ZPPtr3.GetY
sta CLRREADAUX
lda (ZPPtr3),y
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sta SETREADAUX
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rts
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*--------------------------------------
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SHARED.GetScrnDevX
sta CLRREADAUX
lda A2osX.SCRNDEVS,x
sta SETREADAUX
rts
*--------------------------------------
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MAN
SAVE USR/SRC/SYS/KERNEL.S.SHARED
LOAD USR/SRC/SYS/KERNEL.S
ASM