A2osX/SYS/KERNEL.S.IO.txt

NEW
  AUTO 3,1
*--------------------------------------
IO.CLOSE.REG
IO.CLOSE.DIR	ldy #S.FD.REG.REF
				lda (pFD),y
				beq .1
				sta K.MLI.PARAMS+1
				>MLICALL MLICLOSE

.1				ldy #S.FD.REG.IOBUF
				lda (pFD),y
				beq .2
				jsr K.FreeMem
.2				lda IO.hFD
				jmp K.FreeMem
*--------------------------------------
IO.READ.REG		ldx #MLIREAD
				.HS 2C					BIT ABS
*--------------------------------------
IO.WRITE.REG	ldx #MLIWRITE

				ldy #S.FD.REG.REF
				lda (pFD),y
				sta K.MLI.PARAMS+1
				>PULLW K.MLI.PARAMS+2
				>PULLW K.MLI.PARAMS+4

				lda #4					Param Count = 4 for MLIREAD & MLIWRITE
				jsr GP.MLICall
				bcs .9
				>LDYA K.MLI.PARAMS+6
.9				
IO.WRITE.REG.RTS
				rts
*--------------------------------------
IO.OPEN.CDEV
IO.OPEN.BDEV	jsr SHARED.GetPDrv
				ldx #IOCTL.OPEN
				lda IO.hFD
				jsr SHARED.pDrvJmp
				bcs IO.WRITE.REG.RTS
	
				lda IO.hFD
*--------------------------------------
IO.CLOSE.CDEV
IO.CLOSE.BDEV
				clc
				rts
*--------------------------------------
IO.READ.CDEV	ldx #IOCTL.READ
				.HS 2C					BIT ABS
*--------------------------------------
IO.WRITE.CDEV	ldx #IOCTL.WRITE

				>PULLW K.S.IOCTL+S.IOCTL.BUFPTR
				>PULLW K.S.IOCTL+S.IOCTL.BYTECNT
				jsr SHARED.GetPDRV
				>LDYAI K.S.IOCTL
				jsr SHARED.pDrvJmp
				bcs .9
				>LDYA K.S.IOCTL+S.IOCTL.BYTECNT

.9				rts
*--------------------------------------
IO.OPEN.DSOCK
*--------------------------------------
IO.OPEN.SSOCK	lda IO.hFD
				clc
				rts
*--------------------------------------
IO.CLOSE.DSOCK
IO.CLOSE.SSOCK	
				ldy #S.FD.SSOCK.CLOSE
				.HS 2C					BIT ABS
*--------------------------------------
IO.EOF.SSOCK	ldy #S.FD.SSOCK.EOF
				.HS 2C					BIT ABS
*--------------------------------------
IO.READ.SSOCK	ldy #S.FD.SSOCK.READ
				.HS 2C					BIT ABS
*--------------------------------------
IO.WRITE.SSOCK	ldy #S.FD.SSOCK.WRITE

				lda (pFD),y
				tax						Function Offset in LIB

				ldy #S.FD.SSOCK.IOHANDLER
				lda (pFD),y
				jsr K.GetMemPtr
				>STYA .1+1
				lda	IO.hFD
.1				jmp $FFFF				SELF MODIFIED
*--------------------------------------
IO.EOF.REG		>MLICALL MLIGETMARK
				bcs .9
				ldy #2
.1				lda K.MLI.PARAMS+2,y
				sta ACC32,y
				dey
				bpl .1

				>MLICALL MLIGETEOF
				bcs .9

				ldy #2
.2				lda K.MLI.PARAMS+2,y
				eor ACC32,y
				bne .8					FALSE
				dey
				bpl .2
				lda #$ff				TRUE
*				clc
				rts

.8				lda #0
*				clc
.9				rts			
*--------------------------------------
IO.EOF.CDEV		lda #S.IOCTL.STATCODE.EOF
				jmp SHARED.GetDevStatus
*--------------------------------------
* X = 0 > REG
* X = 1 > DIR
* X = 2 > PIPE
*--------------------------------------
IO.MkFD			stx .8+1

				ldy IO.MkFD.Y,x
				lda #0
				ldx #S.MEM.F.INIT0+S.MEM.F.FD
				jsr MEM.GetMem.YAX
				bcs .9
				
				>STYA pFD
				stx IO.hFD
				
.8				ldx #$ff				SELF MODIFIED
				lda IO.MkFD.T,x
				sta (pFD)				X = hFD, A = T
*				clc
.9				rts

IO.MkFD.Y		.DA #S.FD.REG,#S.FD.DIR,#S.FD.PIPE
IO.MkFD.T		.DA #S.FD.T.REG,#S.FD.T.DIR,#S.FD.T.PIPE
*--------------------------------------
IO.MLI.CREATE	sta K.MLI.PARAMS+7		Storage Type
				ldx #3
.1				lda DATELO,x
				sta K.MLI.PARAMS+8,x	Create Date/Time
				dex
				bpl .1

				lda #S.FI.A.FULL
				sta K.MLI.PARAMS+3		Access
				>MLICALL MLICREATE
				rts
*--------------------------------------
IO.MLI.OPEN		>LDYAI 1024				get a ProDOS IOBUF
				ldx #S.MEM.F.ALIGN
				jsr MEM.GetMem.YAX
				bcs .9

				>STYA K.MLI.PARAMS+3	Save Ptr to IOBUF for MLIOPEN call
				txa
				ldy #S.FD.REG.IOBUF
				sta (pFD),y

				>MLICALL MLIOPEN
				bcs .9
				lda K.MLI.PARAMS+5		get ref_num
				ldy #S.FD.REG.REF
				sta (pFD),y

				sta K.MLI.PARAMS+1		Next MLI Calls are REF_NUM based

*				clc
.9				rts
*--------------------------------------
IO.CLOSE.NOD	ldx #2

				lda IO.hFD

.1				cmp Nod.Table.hFD-2,x
				bne .2
				stz Nod.Table.hFD-2,x
				lda Nod.Table.hPath-2,x
				stz Nod.Table.hPath-2,x
				jmp K.FreeMem
.2				inx
				cpx #K.Nod.MAX+2
				bne .1

				lda #E.INVH
*				sec
				rts
*--------------------------------------
MAN
SAVE USR/SRC/SYS/KERNEL.S.IO
LOAD USR/SRC/SYS/KERNEL.S
ASM