oa2src

.PAG 'SCREEN EDITOR & I/O'
SCROL	SEI
	LDY #0
	STY POINT-1
	LDA #$80
	STA SAH
	STA POINT
	LDA #40
	BIT LDTB1+1
	BMI SCRL1
	LDA #80
SCRL1	STA SAL
	LDA #$34
	STA PIAL1
MLP1	LDA (SAL)Y
	STA (POINT-1)Y
	INY
	BNE MLP1
	INC SAH
	INC POINT
	LDA #$84
	CMP SAH
	BNE MLP1
	LDA #232
	STA PNT
	DEC POINT
	LDA #' 
MLP2	DEC PNT
	DEC SAL
	STA (PNT)Y
	BNE MLP2
	LDX #25
	STX TBLX
SCRL4	LDX #0
	DEC TBLX
SCRL5	LDA LDTB1,X
	AND #$7F
	LDY LDTB1+1,X
	BPL SCRL3
	ORA #$80
SCRL3	STA LDTB1,X
	INX
	CPX #25
	BNE SCRL5
	LDA #$83
	STA LDTB1+24
	LDA LDTB1
	BPL SCRL4
	LDA #$3C
	STA PIAL1
	CLI
	LDA #$FE
	CMP PIAK
	BNE MLP42
	LDY #8
MLP4	STA TIH
MLP41	BIT IFR
	BVC MLP41
	DEY
	BNE MLP4
	STY NDX
MLP42	LDX TBLX
	RTS
NEWLN	LDX TBLX
	INX
	SEI
	LDA #$34
	STA PIAL1
	CPX #24
	BEQ BLKLN
	BCC NEWLX
	JMP SCRL
NEWLX	LDX #23
NEWL1	LDA LDTB1+1,X
	ORA #$80
	STA SAH
	LDY LDTB1,X
	BMI NEWLA
	AND #$7F
NEWLA	STA LDTB1+1,X
	TYA
	ORA #$80
	STA POINT
	LDY #39
	LDA LDTB2+1,X
	STA SAL
	LDA LDTB2,X
	STA PNT
NELL	LDA (PNT)Y
	STA (SAL)Y
	DEY
	BPL NELL
	DEX
	CPX TBLX
	BNE NEWL1
	INX
BLKLN	LDA LDTB1,X
	ORA #$80
	STA POINT
	AND #$7F
	STA LDTB1,X
	LDA LDTB2,X
	STA PNT
	LDY #39
	LDA #' 
BLKL	STA (PNT)Y
	DEY
	BPL BLKL
	LDA #$3C
	STA PIAL1
	CLI
	JMP STUPT
PULS	PHA
	TXA
	PHA
	TYA
	PHA
	TSX
	LDA $104,X
	AND #$10
	BEQ PULS1
	JMP (CBINV)
PULS1	JMP (CINV)
KEY	JSR KUDTIM
	LDA BLNSW
	BNE KEY4
	DEC BLNCT
	BNE KEY4
	LDA #20
	STA BLNCT
	LDY PNTR
	LSR BLNON
	LDA (POINT-1)Y
	BCS KEY5
	INC BLNON
	STA GDBLN
KEY5	EOR #$80
	STA (POINT-1)Y
KEY4	LDX #$FF
	STX SFDX
	INX
	STX SFST
	LDX #80
	LDA PIAL
	AND #$F0
	STA PIAL
	LDY #0
	LDA PIAL
	ASL A
	ASL A
	ASL A
	BPL KEY3
	STY CAS1
	LDA #$3D
	BNE KL24
KEY3	LDA CAS1
	BNE KL2
	LDA #$35
KL24	STA PIAS
KL2	BCC KL23
	STY CAS2
	LDA PIA
	ORA #$10
	BNE KL25
KL23	LDA CAS2
	BNE KL22
	LDA PIA
	AND #$EF
KL25	STA PIA
KL22	LDY #8
	LDA PIAK
	CMP PIAK
	BNE KL22
KL1	LSR A
	BCS CKIT
	PHA
	LDA CHAR-1,X
	BNE CKIS1
	LDA #1
	STA SFST
	BNE CKUT
CKIS1	CMP #$FF
	BEQ CKUT
	CMP #$3C
	BNE SPCK
	BIT PIAL1
	BMI CKUT
SPCK	STX SFDX
CKUT	PLA
CKIT	DEX
	BEQ CKIT1
	DEY
	BNE KL1
	INC PIAL
	BNE KL22
CKIT1	LDA SFDX
	CMP LSTX
	BEQ PREND
	STA LSTX
	TAX
	BMI PREND
	LDA CHAR-1,X
	LSR SFST
	BCC KN1
	ORA #$80
KN1	LDX NDX
	STA KEYD,X
	INX
	CPX #10
	BNE KEYF
	LDX #0
KEYF	STX NDX
PREND	PLA
	TAY
	PLA
	TAX
	PLA
	RTI
DSPP	TAY
DSPP1	LDA PIA
	AND #$20
	BNE DSPP1
	TYA
	LDY PNTR
	STA (POINT-1)Y
	RTS
CHAR	.BYT $3D,$2E
	.BYT $FF,$3,$3C,$20,$5B,$12
	.BYT $2D,$30,0,$3E,$FF,$5D,$40,0
	.BYT $2B,$32,$FF,$3F,$2C,$4E,$56,$58
	.BYT $33,$31,$D,$3B,$4D,$42,$43,$5A
	.BYT $2A,$35,$FF,$3A,$4B,$48,$46,$53
	.BYT $36,$34,$FF,$4C,$4A,$47,$44,$41
	.BYT $2F,$38,$FF,$50,$49,$59,$52,$57
	.BYT $39,$37,$5E,$4F,$55,$54,$45,$51
	.BYT $14,$11,$FF,$29,$5C,$27,$24,$22
	.BYT $1D,$13,$5F,$28,$26,$25,$23,$21
LDTB2	.BYT 0,40,80,120,160,200
	.BYT 240,280-256,320-256,360-256
	.BYT 400-256,440-256,480-256
	.BYT 520-512,560-512
	.BYT 600-512,640-512,680-512
	.BYT 720-512,760-512,800-768
	.BYT 840-768,880-768,920-768,960-768
RUNTB	.BYT 'LOAD',$D,'RUN',$D
;
.FILE UTILIT