A2osX/DRV/CONSOLE.DRV.S.txt

PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
				.LIST OFF	
				.OP	65C02
				.OR $2000
				.TF DRV/CONSOLE.DRV
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/IO.I
*--------------------------------------
ZPBASL1			.EQ ZPDRV
ZPBASL2			.EQ ZPDRV+2
*--------------------------------------
* Main DRV entry point
* input :
* X = CMD
*	0 : OPEN
*	2 : GETEVENT
*	6 : OUT
*   8 : CLOSE
*--------------------------------------
* CLD 			$D8
* JMP (*,x)		$7C
* 				#JMPTABLE
*				/JMPTABLE
*--------------------------------------
CURSOR.BLINK.SPEED	.EQ 2
*--------------------------------------
CS.START		cld
				jmp (.1,x)
.1				.DA OPEN
				.DA GETEVENT
				.DA OUT
				.DA CLOSE
				.DA GETINFO
				.DA 0					end or relocation
				.DA CS.END-CS.START		Code Length To Relocate
				.DA 0					Data Segemnt to Allocate
*--------------------------------------
OPEN			stz CURON
				lda #$80
				sta INVFLG
				
				jsr HOME
				
				lda #S.DEV.F.CHAR+S.DEV.F.EVENT+S.DEV.F.OUT
				sta (pDevContext)
				
				ldy #S.DEV.NAME
				ldx #0
.1				lda DEVNAME,x
				sta (pDevContext),y
				cpx DEVNAME
				beq .8
				inx
				iny
				bne .1
				
.8				lda A2osX.SCREENS
				ora #A2osX.SCREENS.C
				sta A2osX.SCREENS
				
				clc
				rts
*--------------------------------------
GETEVENT		>PULLW pEvent
				lda A2osX.TIMER16
				and #CURSOR.BLINK.SPEED
				eor CURON
				beq .9
				jsr CURBLNK
				
.9				lda	#0					Error = no event
				sec
				rts
*--------------------------------------
OUT				>PULLA
				jsr COUT
				clc
				rts
*--------------------------------------
CLOSE			lda A2osX.SCREENS
				and #$FF^A2osX.SCREENS.C
				sta A2osX.SCREENS
				clc
				rts
*--------------------------------------
GETINFO			clc
				rts

*--------------------------------------
*				PRIVATE
*--------------------------------------
COUT			cmp #8
				bne .2
				ldx CH
				beq .10
				dec CH
				bra .12
				
.10				ldy CV
				bne .11
				rts
				
.11				lda #79
				sta CH
				dec CV	
				
.12				lda #$A0
				ldx CH
				ldy CV
				jsr SetCharAtXY
				rts
				
.2				cmp #13
				beq CROUT
				ldx CH
				ldy CV
				jsr SetCharAtXY
FSOUT			ldx CH
				cpx #79
				beq CROUT1
				inc CH
				rts
*--------------------------------------
CROUT			jsr CLREOL
CROUT1			stz CH
				ldy CV
				cpy #23
				beq SCROLL.UP
				inc CV
				rts
				
SCROLL.UP		ldx #0
				sta SET80STORE
				
.1				lda BASEL,x
				sta ZPBASL1
				lda BASEH,x
				sta ZPBASL1+1
				inx
				lda BASEL,x
				sta ZPBASL2
				lda BASEH,x
				sta ZPBASL2+1
				
				ldy #39
				sta SETPAGE2
				
.2				lda (ZPBASL2),y
				sta (ZPBASL1),y 
				dey
				bpl .2

				ldy #39
				sta CLRPAGE2
				
.3				lda (ZPBASL2),y
				sta (ZPBASL1),y 
				dey
				bpl .3

				cpx #23
				bne .1
				
				
*--------------------------------------
CLREOL			ldx CH
.1				phx
				ldy CV
				lda #$A0
				jsr SetCharAtXY
				plx
				inx
				cpx #80
				bne .1
				rts
*--------------------------------------
HOME			stz CH
				stz CV

				lda RDPAGE2
				pha
				lda RD80STORE
				pha
				
				sta SET80STORE
				
				ldx #23
				
.1				lda BASEL,x
				sta ZPBASL1
				lda BASEH,x
				sta ZPBASL1+1
				
				lda #' '
				ora INVFLG

				sta CLRPAGE2
				ldy #39
				
.2				sta (ZPBASL1),y		
				dey
				bpl .2
				
				sta SETPAGE2
				ldy #39
				
.3				sta (ZPBASL1),y		
				dey
				bpl .3

				dex
				bpl .1
				
				pla
				bmi .4
				sta CLR80STORE
				bra .5
.4				sta SET80STORE

.5				pla
				bmi .6
				sta CLRPAGE2
				bra .8
.6				sta SETPAGE2
				
.8				rts
*--------------------------------------
CUROFF			lda CURON
				beq	CUREXIT.RTS
				
CURBLNK			lda A2osX.ACTIVESCRN
				and #A2osX.SCREENS.C
				bne CURBLNK1
				
				lda CURON
				bne	CURBLNK.OFF
				rts						do not Light if screen is not active
				
CURBLNK1		lda CURON
				bne CURBLNK.OFF
				ldx CH
				ldy CV
				jsr GetCharAtXY
				sta CURCHAR
				ldx CH
				ldy CV
				lda #$20
				jsr SetCharAtXY
				bra CUREXIT
				
CURBLNK.OFF		ldx CH
				ldy CV
				lda CURCHAR
				jsr SetCharAtXY

CUREXIT			lda CURON
				eor #CURSOR.BLINK.SPEED
				sta CURON
CUREXIT.RTS		rts
*--------------------------------------
SetCharAtXY		pha
				lda RDPAGE2
				pha
				lda RD80STORE
				pha
				sta SET80STORE
				txa
				lsr

				bcc .1
				clc
				sta CLRPAGE2
				bra .2
.1				sta SETPAGE2
			
.2				adc BASEL,y
				sta ZPBASL1
				lda BASEH,y
				sta ZPBASL1+1

				ply
				plx
				pla
				sta (ZPBASL1)
				tya
				bmi .3
				sta CLR80STORE
.3				txa
				bpl .4
				sta SETPAGE2
				rts
.4				sta CLRPAGE2
				rts	
*--------------------------------------
GetCharAtXY		sta SET80STORE
				txa
				lsr

				bcc .1
				clc
				sta CLRPAGE2
				bra .2
.1				sta SETPAGE2
			
.2				adc BASEL,y
				sta ZPBASL1
				lda BASEH,y
				sta ZPBASL1+1

				lda (ZPBASL1)
				rts
*--------------------------------------
CS.END
DEVNAME			>PSTRING "CON"
CH				.BS 1
CV				.BS 1
INVFLG			.BS 1
CURON			.BS 1
CURCHAR			.BS 1
*--------------------------------------
BASEL			.HS	00.80.00.80.00.80.00.80.28.A8.28.A8.28.A8.28.A8.50.D0.50.D0.50.D0.50.D0
BASEH			.HS	04.04.05.05.06.06.07.07.04.04.05.05.06.06.07.07.04.04.05.05.06.06.07.07
*--------------------------------------
MAN
SAVE DRV/CONSOLE.DRV.S
ASM