A2osX/BIN/SH.S.CL.txt

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NEW
2019-06-02 08:58:46 +00:00
AUTO 3,1
.LIST OFF
*--------------------------------------
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CL.Init >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPCLBuf
txa
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>STA.G CL.hCLBuf
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.9 rts
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*--------------------------------------
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CL.PrintPrompt >PUSHW L.PS1
>PUSHWI 0
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>SYSCALL Expand
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bcs .9
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phx
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>PUSHYA
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>PUSHBI 0
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>SYSCALL PrintF
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pla
>SYSCALL FreeMem
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.1 >PUSHW L.MSG.PROMPT
>PUSHBI 0
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>SYSCALL PrintF
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.9 rts
*--------------------------------------
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CL.READN0A tax
CL.READN0X
>PUSHW ZPCLBuf
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>PUSHW L.FMT.Byte
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txa
>PUSHA
>PUSHBI 1
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>SYSCALL SPrintF
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bcs .9
lda #$ff
>STA.G CL.bReady
* clc
.9 rts
*--------------------------------------
CL.CHARIN tax
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>LDA.G CL.bEscMode \e ?
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beq .4
cpx #'['
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beq .8 \e[
lda #0
sta (pData),y Y=bEscMode
txa
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ldx #EscChars.Cnt-1
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.1 cmp EscChars,x
beq .2
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dex
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bpl .1
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.8 rts invalid \e[ sequence
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.2 >LDA.G READ.N
bne .3
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lda EscChars.Remap,x
bra CL.READN0A
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.3 txa
asl
tax
jmp (J.ESC,x)
*--------------------------------------
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.4 cpx #C.ESC
bne .5
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lda #$ff
>STA.G CL.bEscMode
clc
rts
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.5 >LDA.G READ.N
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beq CL.READN0X
cpx #C.SPACE
bcc CL.CHARIN.CTRL
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cpx #C.DEL
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bne CL.Insert
*--------------------------------------
* Erase char BEFORE cursor
*--------------------------------------
>LDA.G CL.Len
beq .8
>LDA.G CL.Ptr
beq .8
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>LDA.G bREAD.S
bmi .6
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lda #C.BS
>SYSCALL PutChar
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.6 >DEC.G CL.Ptr
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jmp CL.DEL
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*--------------------------------------
CL.Insert >LDA.G CL.Len
>CMP.G READ.N
beq .8 Buffer full, discard...
inc
>STA.G CL.Len
pha
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.1 ply
dey
lda (ZPCLBuf),y Move from Ptr To end of buffer forward...
iny
sta (ZPCLBuf),y
dey
phy
tya
>CMP.G CL.Ptr
bne .1
ply Y=CL.Ptr
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* >LDA.G CL.Ptr
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txa
sta (ZPCLBuf),y
>INC.G CL.Ptr
>LDA.G bREAD.S
bmi .7
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txa
>SYSCALL PutChar
jsr CL.PrintEOL
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.7 >LDA.G READ.N READ N = 1, don't wait for CR
dec
bne .8
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lda #$ff
>STA.G CL.bReady
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.8 clc
rts
*--------------------------------------
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CL.CHARIN.CTRL cpx #C.CR
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beq .18
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cpx #C.EOF
beq .18
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cpx #3 Ctrl-C
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beq CL.CLR
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cpx #26 Ctrl-Z
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bne .8
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jmp CL.SUPPR
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.18 jsr CheckLFAfterCR Check for any extra LF
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bcs .9
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lda #$ff
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>STA.G CL.bReady
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.8 clc
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.9 rts
*--------------------------------------
CL.CLR lda (ZPCLBuf)
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beq CL.Reset.1
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>LDA.G bREAD.S
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bmi CL.Reset.1
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.1 >LDA.G CL.Ptr
>CMP.G CL.Len
beq .2
inc
>STA.G CL.Ptr
lda #C.FS
>SYSCALL PutChar
bra .1
.2 ldy #0
.3 lda #C.DEL
sta (ZPCLBuf),y
iny
lda (ZPCLBuf),y
bne .3
jsr CL.PrintCLBuf
*--------------------------------------
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CL.Reset lda #0
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sta (ZPCLBuf)
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CL.Reset.1 lda #0
ldy #CL.Ptr
.1 sta (pData),y
iny
cpy #CL.bEscMode+1
bne .1
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rts
*--------------------------------------
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CL.BS >LDA.G CL.Ptr
beq .9
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dec
sta (pData),y
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>LDA.G bREAD.S
bmi .9
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lda #C.BS
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>SYSCALL PutChar
.9 rts
*--------------------------------------
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CL.NAK >LDA.G CL.Ptr
>CMP.G CL.Len
beq .9
inc
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>STA.G CL.Ptr
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>LDA.G bREAD.S
bmi .9
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lda #C.FS
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>SYSCALL PutChar
.9 rts
*--------------------------------------
* Erase char UNDER cursor
*--------------------------------------
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CL.SUPPR >LDA.G CL.Len
beq CL.PrintEOL.8
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>LDA.G CL.Ptr
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>CMP.G CL.Len
beq CL.PrintEOL.8
*--------------------------------------
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CL.DEL pha
.1 ply
iny
lda (ZPCLBuf),y
dey
sta (ZPCLBuf),y
iny
phy
tya
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>CMP.G CL.Len
bne .1
pla
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>DEC.G CL.Len
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>LDA.G bREAD.S
bpl CL.PrintEOL
clc
rts
*--------------------------------------
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CL.PrintEOL >LDA.G CL.Ptr
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.1 >CMP.G CL.Len
beq .2
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pha
tay
lda (ZPCLBuf),y
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>SYSCALL PutChar
pla
inc
bra .1
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.2 lda #C.SPACE
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>SYSCALL PutChar
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>LDA.G CL.Ptr
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.3 >CMP.G CL.Len
beq .4
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pha
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lda #C.BS
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>SYSCALL PutChar
pla
inc
bra .3
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.4 lda #C.BS
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>SYSCALL PutChar
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CL.PrintEOL.8 clc
rts
*--------------------------------------
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CL.PrintCLBuf ldy #S.PS.hStdOut
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lda (pPS),y
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>PUSHA
>PUSHW ZPCLBuf
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>SYSCALL FPutS
rts
*--------------------------------------
MAN
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SAVE usr/src/bin/sh.s.cl
LOAD usr/src/bin/sh.s
ASM