A2osX/SYS/KERNEL.S.DRV.txt
2020-12-15 14:23:22 +01:00

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NEW
AUTO 3,1
*--------------------------------------
* DRV.DiskII
* X = IOCTL
* Y,A = PTR to S.IOCTL
*--------------------------------------
DRV.DiskII cld
cpx #IOCTL.FORMAT
bcs DRV.RamDrive.9
>STYA pIOCTL
jmp (.1,x)
.1 .DA DRV.DiskII.STATUS
.DA DRV.BLK READ
.DA DRV.BLK WRITE
*--------------------------------------
DRV.DiskII.STATUS
>LDYAI DRV.DiskII.DIB
jmp DRV.STATUS.YA
*--------------------------------------
DRV.DiskII.DIB .DA #S.DIB.S.BLOCK+S.DIB.S.WRITE+S.DIB.S.READ
.DA 280
.DA #0
>PSTR "Disk ][ 5.25"
.BS 4
.DA #S.DIB.T.DISKII
.DA #0
.DA K.VER
*--------------------------------------
* DRV.RamDrive
* X = IOCTL
* Y,A = PTR to S.IOCTL
*--------------------------------------
DRV.RamDrive cld
cpx #IOCTL.CONTROL
bcs DRV.RamDrive.9
>STYA pIOCTL
jmp (.1,x)
.1 .DA DRV.RamDrive.STATUS
.DA DRV.BLK READ
.DA DRV.BLK WRITE
.DA DRV.BLK FORMAT
DRV.RamDrive.9 jmp A2osX.BadCall
*--------------------------------------
DRV.RamDrive.STATUS
jsr DRV.Blk
bcs .9
stx DRV.RamDrive.DIB+S.DIB.SIZE
sty DRV.RamDrive.DIB+S.DIB.SIZE+1
>LDYAI DRV.RamDrive.DIB
jmp DRV.STATUS.YA
.9 rts
*--------------------------------------
DRV.RamDrive.DIB
.DA #S.DIB.S.BLOCK+S.DIB.S.WRITE+S.DIB.S.READ
.BS 3
>PSTR "ProDOS /RAM Disk"
.DA #S.DIB.T.RAM
.DA #0
.DA K.VER
*--------------------------------------
* DRV.BlkDevice
* X = IOCTL
* Y,A = PTR to S.IOCTL
*--------------------------------------
DRV.BlkDevice cld
cpx #IOCTL.CONTROL
bcs DRV.RamDrive.9
>STYA pIOCTL
jmp (.1,x)
.1 .DA DRV.BlkDevice.STATUS
.DA DRV.BLK READ
.DA DRV.BLK WRITE
.DA DRV.BLK FORMAT
*--------------------------------------
DRV.BlkDevice.STATUS
jsr DRV.Blk
bcs .9
stx DRV.BlkDevice.DIB+S.DIB.SIZE
sty DRV.BlkDevice.DIB+S.DIB.SIZE+1
>LDYAI DRV.BlkDevice.DIB
jmp DRV.STATUS.YA
.9 rts
*--------------------------------------
DRV.BlkDevice.DIB
.DA #S.DIB.S.BLOCK+S.DIB.S.WRITE+S.DIB.S.READ
.BS 3
>PSTR "ProDOS Block Dev"
.DA #S.DIB.T.PRODOS
.DA #0
.DA K.VER
*--------------------------------------
* IOCTL to BLK protocol converter
* in : pIOCTL
*--------------------------------------
DRV.BLK txa
lsr
sta DRV.BLK.PARAMS CMD
ldy #S.FD.DEV.DEVID Drive 1, or 2
lda (pFD),y
dec O or 1
lsr in Carry
php
ldy #S.FD.DEV.BUSID
lda (pFD),y
asl
asl
asl
asl
asl
plp
ror DSSS0000
sta DRV.BLK.PARAMS+1 UNITNUM
ldx #3
ldy #S.IOCTL.BUFPTR+3
.1 lda (pIOCTL),y BUF,BLKNUM
sta DRV.BLK.PARAMS+2,x
dey
dex
bpl .1
ldy #S.FD.DEV.BUSPTR
lda (pFD),y
sta .3+1
iny
lda (pFD),y
sta .3+2
jsr GO.ProDOS
ldx #5
.2 lda DRV.BLK.PARAMS,x
sta $42,x
dex
bpl .2
.3 jsr $ffff SELF MODIFIED
jsr GO.A2osX
rts
DRV.BLK.PARAMS .BS 6
*--------------------------------------
* Smartport Driver
*--------------------------------------
DRV.SmartPort cld
>STYA pIOCTL
>STYA .3 smartport Params
txa
lsr
sta .2
tax
lda DRV.SmartPort.Cnt,x
sta (pIOCTL) S.IOCTL.CNT
ldy #S.FD.DEV.DEVID
lda (pFD),y
ldy #S.IOCTL.UNITNUM
sta (pIOCTL),y
ldy #S.FD.DEV.BUSPTR
lda (pFD),y
sta .1+1
iny
lda (pFD),y
sta .1+2
jsr GO.ProDOS Remapped SP
.1 jsr $ffff
.2 .BS 1
.3 .BS 2
jsr GO.A2osX
rts
DRV.SmartPort.Cnt
.HS 03030301030101010404
*--------------------------------------
* NULL DEVICE
* - OPEN,WRITE,CLOSE always succeed.
* - READ returns EOF.
*--------------------------------------
DRV.NULL cld
>STYA pIOCTL
txa
beq DRV.NULL.STATUS
jmp (.1-12,x)
*--------------------------------------
.1
* .DA DRV.NULL.STATUS
* .DA A2osX.BADCALL READBLOCK
* .DA A2osX.BADCALL WRITEBLOCK
* .DA A2osX.BADCALL FORMAT
* .DA A2osX.BADCALL CONTROL
* .DA A2osX.BADCALL INIT
.DA DRV.NULL.OPEN
.DA DRV.NULL.CLOSE
.DA DRV.NULL.READ
.DA DRV.NULL.WRITE
*--------------------------------------
DRV.NULL.DIB .DA #S.DIB.S.WRITE+S.DIB.S.READ+S.DIB.S.OPENED
.DA #0,#0,#0
>PSTR "NULL Device"
.BS 5
.DA #S.DIB.T.CHAR
.DA #0
.DA K.VER
*--------------------------------------
DRV.NULL.STATUS >LDYAI DRV.NULL.DIB
*--------------------------------------
DRV.STATUS.YA >STYA .2+1
ldy #S.IOCTL.STATCODE
lda (pIOCTL),y
beq .1
cmp #S.IOCTL.STATCODE.GETDIB
bne .9
ldx #S.DIB-1
.HS 2C bit abs
.1 ldx #3
ldy #S.IOCTL.BUFPTR
lda (pIOCTL),y
sta .3+1
iny
lda (pIOCTL),y
sta .3+2
.2 lda $ffff,x SELF MODIFIED
.3 sta $ffff,x SELF MODIFIED
dex
bpl .2
clc
rts
.9 lda #MLI.E.BADCTL
sec
rts
*--------------------------------------
DRV.NULL.READ ldx #C.EOF
*--------------------------------------
DRV.READ.X ldy #S.IOCTL.BYTECNT
lda #1
sta (pIOCTL),y
iny
dec
sta (pIOCTL),y
ldy #S.IOCTL.BUFPTR
lda (pIOCTL),y
sta .1+1
iny
lda (pIOCTL),y
sta .1+2
.1 stx $ffff SELF MODIFIED
*--------------------------------------
DRV.NULL.OPEN
DRV.NULL.WRITE
DRV.NULL.CLOSE clc
rts
*--------------------------------------
MAN
SAVE usr/src/sys/kernel.s.drv
LOAD usr/src/sys/kernel.s
ASM