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A2osX/SHARED/X.SSC.DRV.S.txt
Rémy GIBERT 33d273b220 Kernel 0.94++
2021-05-04 19:31:21 +02:00

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NEW
AUTO 3,1
.OP 65C02
.OR $2000
*--------------------------------------
.DO SSCIRQ=1
.TF drv/ssc.i.drv
.ELSE
.TF drv/ssc.drv
.FIN
*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
ZPArgPtr .BS 2
ZPSlotPtr .BS 2
ZS.END .ED
*--------------------------------------
* File Header (16 Bytes)
*--------------------------------------
CS.START cld
jmp Dev.Detect cld,jmp abs=DRV
.DA #$61 6502,Level 1 (65c02)
.DA #1 DRV Layout Version 1
.DA 0
.DA CS.END-CS.START Code Length
.DA 0
.DA 0
.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
L.MSG.DETECT .DA MSG.DETECT
L.MSG.DETECT.OK .DA MSG.DETECT.OK
L.MSG.DETECT.KO .DA MSG.DETECT.KO
L.DRV.CS.START .DA DRV.CS.START
L.FD.DEV .DA FD.DEV
L.FD.DEV.NAME .DA FD.DEV.NAME
.DA 0 End Of Reloc Table
*--------------------------------------
Dev.Detect >STYA ZPArgPtr
>LDYA L.MSG.DETECT
>SYSCALL PutS
stz ZPSlotPtr
lda #$C1
sta ZPSlotPtr+1
.1 and #$0f
tay
lda A2osX.S,y
bne .3
ldx #DEVSIG.Length-1
.2 ldy DEVSIG.Offset,x
lda (ZPSlotPtr),y
cmp DEVSIG.Value,x
bne .3
dex
bpl .2
bra .4
.3 inc FD.DEV.NAME+3
inc ZPSlotPtr+1 no match, try next slot....
lda ZPSlotPtr+1
cmp #$C8
bne .1
>LDYA L.MSG.DETECT.KO
>SYSCALL PutS
lda #MLI.E.NODEV Not Found in any slot, exiting
sec
.99 rts
.4 lda ZPSlotPtr+1
asl
asl
asl
asl
clc
adc #$8F
sta DEVSLOTn08F
jsr Dev.ParseArgs
bcs .99
.8 >PUSHW L.MSG.DETECT.OK
>PUSHW L.FD.DEV.NAME
>PUSHBI 2
>SYSCALL PrintF
>PUSHWI DRV.END
>PUSHWI DRV.CS.END-DRV.CS.START
>PUSHWI DRV.CS.START
>LDYA L.DRV.CS.START
>SYSCALL InsDrv
bcs .9
>STYA FD.DEV+S.FD.DEV.DRVPTR
>PUSHW L.FD.DEV
>PUSHW L.FD.DEV.NAME
>SYSCALL MKDev
bcs .9
lda ZPSlotPtr+1
and #$0F
tay
lda #A2osX.S.COM
sta A2osX.S,y
* clc
.9 rts
*--------------------------------------
Dev.ParseArgs lda (ZPArgPtr)
bne .1
clc
rts
.1 stz DCB+S.DCB.COM.BAUD
stz DCB+S.DCB.COM.BAUD+1
stz DCB+S.DCB.COM.BAUD+2
stz DCB+S.DCB.COM.BAUD+3
.2 jsr DevNextChar
beq .90
cmp #','
beq .3
jsr Dev.IsDigit
bcs .90
jsr Dev.BaudT10pA
bra .2
.3 jsr Dev.CheckBaud
bcs .99
jsr DevNextChar
beq .99
ldx #P2.Cnt-1
.4 cmp P2,x
beq .5
dex
bpl .4
.90 bra .99
.5 lda #%11100000
trb DEVCMD
txa
asl
asl
asl
asl
asl
tsb DEVCMD
jsr DevCheckSep
bcs .99
ldx #P3.Cnt-1
.6 cmp P3,x
beq .7
dex
bpl .6
bra .99
.7 lda #%01100000
trb DEVCTL
txa
asl
asl
asl
asl
asl
tsb DEVCTL
jsr DevCheckSep
bcs .99
ldx #P4.Cnt-1
.8 cmp P4,x
beq .9
dex
bpl .8
bra .99
.9 lda #%10000000
trb DEVCTL
txa
rol
rol
tsb DEVCTL
jsr DevCheckSep
bcs .99
ldx #P5.Cnt-1
.10 cmp P5,x
beq .11
dex
bpl .10
bra .99
.11 stx DEVFLOWCTRL
clc
rts
.99 lda #E.SYN
sec
rts
*--------------------------------------
DevCheckSep jsr DevNextChar
beq .9
cmp #','
bne .9
jsr DevNextChar
beq .9
clc
rts
.9 sec
rts
*--------------------------------------
DevNextChar lda (ZPArgPtr)
beq .9
inc ZPArgPtr
bne .9
inc ZPArgPtr+1
.9 rts
*--------------------------------------
Dev.IsDigit cmp #'0'
bcc .9
cmp #'9'+1
bcs .99
and #$0F
rts
.9 sec
.99 rts
*--------------------------------------
Dev.BaudT10pA pha
>PUSHL DCB+S.DCB.COM.BAUD
>PUSHBI 0
>PUSHBI 0
>PUSHBI 0
>PUSHBI 10
>FPU MUL32
>PUSHBI 0
>PUSHBI 0
>PUSHBI 0
pla
>PUSHA
>FPU ADD32
>PULLL DCB+S.DCB.COM.BAUD
rts
*--------------------------------------
Dev.CheckBaud ldx #0
.1 txa
asl
asl
tay
lda DCB+S.DCB.COM.BAUD
cmp P1,y
bne .7
lda DCB+S.DCB.COM.BAUD+1
cmp P1+1,y
bne .7
lda DCB+S.DCB.COM.BAUD+2
cmp P1+2,y
bne .7
lda DCB+S.DCB.COM.BAUD+3
cmp P1+3,y
bne .7
lda #$F
trb DEVCTL
txa
tsb DEVCTL
clc
rts
.7 inx
cpx #P1.Cnt
bcc .1
rts
*--------------------------------------
CS.END
DEVSIG.Offset .HS 05070B0C
DEVSIG.Value .HS 38180131
DEVSIG.Length .EQ DEVSIG.Value-DEVSIG.Offset
MSG.DETECT .AS "Apple SSC (Super Serial Card,//c Serial Port) Driver"
.DO SSCIRQ=1
.AS " (IRQ Enabled)"
.FIN
.AZ "."
MSG.DETECT.OK .AZ "SSC Installed As Device : %s\r\n"
MSG.DETECT.KO .AZ "No SSC Found."
*--------------------------------------
P1 .DA >115200 Baud
.DA >50
.DA >75
.DA >110
.DA >135
.DA >150
.DA >300
.DA >600
.DA >1200
.DA >1800
.DA >2400
.DA >3600
.DA >4800
.DA >7200
.DA >9600
.DA >19200
P1.Cnt .EQ 16
*--------------------------------------
P2 .AS "NOEMS" Parity
P2.Cnt .EQ *-P2
*--------------------------------------
P3 .AS "8765" Data
P3.Cnt .EQ *-P3
*--------------------------------------
P4 .AS "12" Stop
P4.Cnt .EQ *-P4
*--------------------------------------
P5 .AS "NHX" flow Control
P5.Cnt .EQ *-P5
*--------------------------------------
FD.DEV .DA #S.FD.T.CDEV
.DA #0 HANDLER
.DA #0 BUSID
.DA #0 DEVID
.DA 0 BUSPTR
.BS 2 DRVPTR
.DA 0 DCBPTR
.DA 0 BUFPTR
FD.DEV.NAME .AZ "com1"
*--------------------------------------
* Driver Code
*--------------------------------------
ZPIOCTL .EQ ZPDRV
ZPBufPtr .EQ ZPDRV+2
ZPCount .EQ ZPDRV+4
ZPCount2 .EQ ZPDRV+6
*--------------------------------------
DRV.CS.START cld
jmp (.1,x)
.1 .DA STATUS
.DA A2osX.BADCALL
.DA A2osX.BADCALL
.DA A2osX.BADCALL
.DA CONTROL
.DA A2osX.BADCALL
.DA OPEN
.DA CLOSE
.DA READ
.DA WRITE
.DO SSCIRQ=1
.DA IRQ
.FIN
.DA 0 end or relocation
*--------------------------------------
STATUS jsr STATUS.CONTROL.Init
ldy #S.IOCTL.S
lda (ZPIOCTL),y
beq .1
cmp #S.IOCTL.S.GETDIB
bne STATUS.DCB
ldy #S.DIB-1
.HS 2C bit abs
.1 ldy #3
.2 lda DIB,y
sta (ZPBufPtr),y
dey
bpl .2
clc
rts
STATUS.DCB cmp #S.IOCTL.S.GETDCB
bne .3
ldy #S.DCB.COM-1
.2 lda DCB,y
sta (ZPBufPtr),y
dey
bpl .2
clc
rts
.3 cmp #S.IOCTL.S.EOF
bne STATUS.9
lda DIB+S.DIB.S
and #S.DIB.S.OPENED
beq OPEN.E
.DO SSCIRQ=1
lda INBUF.TAIL
eor INBUF.HEAD
beq .4 NO DATA? eof = TRUE
lda #1
.4 dec
clc
rts
.ELSE
ldx DEVSLOTn08F
lda SSC.STATUS-$8F,x
and #SSC.STATUS.RDRF
beq .4
lda #1
.4 dec
.FIN
.8 clc
rts
STATUS.9 lda #MLI.E.BADCTL
sec
rts
*--------------------------------------
CONTROL jsr STATUS.CONTROL.Init
ldy #S.IOCTL.C
lda (ZPIOCTL),y
cmp #S.IOCTL.C.SETDCB
bne STATUS.9
ldy #S.DCB.COM-1
.2 lda (ZPBufPtr),y
sta DCB,y
dey
bpl .2
*--------------------------------------
OPEN lda DIB+S.DIB.S
bit #S.DIB.S.OPENED
beq OPEN.1
OPEN.E lda #MLI.E.OPEN
sec
rts
OPEN.1 php
sei
.DO SSCIRQ=1
>LDYAI 256
>SYSCALL2 NewStkObj
bcs .99
stx hINBUF
>STYA READ.INBUF+1
>STYA IRQ.INBUF+1
>LDYAI 256
>SYSCALL2 NewStkObj
bcs .90
stx hOUTBUF
>STYA WRITE.OUTBUF+1
>STYA IRQ.OUTBUF+1
stz INBUF.HEAD
stz INBUF.TAIL
stz OUTBUF.HEAD
stz OUTBUF.TAIL
.FIN
ldx DEVSLOTn08F
stz SSC.RESET-$8F,x
lda DEVCTL
sta SSC.CTL-$8F,x
lda DEVCMD
sta SSC.CMD-$8F,x
lda SSC.DATA-$8F,x discard any garbage byte
lda SSC.STATUS-$8F,x clear any IRQ pending
lda #S.DIB.S.OPENED
tsb DIB+S.DIB.S
plp
clc
rts
.DO SSCIRQ=1
.90 pha
lda hINBUF
>SYSCALL FreeStkObj
pla
.99 plp
sec
rts
.FIN
*--------------------------------------
CLOSE lda DIB+S.DIB.S
bit #S.DIB.S.OPENED
beq OPEN.E
php
sei
ldx DEVSLOTn08F
stz SSC.RESET-$8F,x
.DO SSCIRQ=1
lda hINBUF
>SYSCALL FreeStkObj
lda hOUTBUF
>SYSCALL FreeStkObj
.FIN
lda #S.DIB.S.OPENED
trb DIB+S.DIB.S
plp
clc
rts
*--------------------------------------
READ php
sei
jsr READ.WRITE.Init
stz ZPCount2
stz ZPCount2+1
.DO SSCIRQ=1
sta SETREADAUX
.FIN
READ.10 inc ZPCount
bne READ.11
inc ZPCount+1
beq READ.8
READ.11 .DO SSCIRQ=1
ldy INBUF.TAIL
cpy INBUF.HEAD
beq READ.2
READ.INBUF lda $FFFF,y SELF MODIFIED
inc INBUF.TAIL
sta (ZPBufPtr)
inc ZPBufPtr
bne READ.12
inc ZPBufPtr+1
READ.12 inc ZPCount2
bne READ.10
inc ZPCount2+1
bra READ.10
.FIN
READ.2 lda SSC.STATUS-$8F,x
bit #SSC.STATUS.nDCD true when 0
bne READ.9
bit #SSC.STATUS.RDRF incoming char?
beq READ.8
lda SSC.DATA-$8F,x
sta (ZPBufPtr)
inc ZPBufPtr
bne READ.13
inc ZPBufPtr+1
READ.13 inc ZPCount2
bne READ.2
inc ZPCount2+1
bra READ.2
READ.8 lda ZPCount2
bne READ.81
ora ZPCount2+1
beq READ.99
lda ZPCount2
READ.81 ldy #S.IOCTL.BYTECNT
sta (ZPIOCTL),y
iny
lda ZPCount2+1
sta (ZPIOCTL),y
.DO SSCIRQ=1
sta CLRREADAUX
.FIN
plp
clc
rts
READ.9 lda #MLI.E.IO
.HS 2C BIT ABS
READ.99 lda #E.NODATA
.DO SSCIRQ=1
sta CLRREADAUX
.FIN
plp
sec
rts
*--------------------------------------
WRITE php
sei
jsr READ.WRITE.Init
.DO SSCIRQ=1
sta SETWRITEAUX
.FIN
WRITE.2 inc ZPCount
bne WRITE.3
inc ZPCount+1
beq WRITE.8
WRITE.3 .DO SSCIRQ=1
lda SSC.STATUS-$8F,x
bit #SSC.STATUS.nDCD true when 0
bne WRITE.9
lda OUTBUF.HEAD
cmp OUTBUF.TAIL Buffer Empty?
bne WRITE.6 not empty, queue char
lda SSC.STATUS-$8F,x
and #SSC.STATUS.TDRE Register Empty ?
beq WRITE.5 not empty, queue char
lda (ZPBufPtr) yes, write directly to ACIA
sta SSC.DATA-$8F,x
inc ZPBufPtr
bne WRITE.2
inc ZPBufPtr+1
bra WRITE.2
WRITE.5 lda OUTBUF.HEAD
WRITE.6 tay
inc
cmp OUTBUF.TAIL
beq WRITE.99 Buffer Full!!
sta OUTBUF.HEAD
lda (ZPBufPtr)
WRITE.OUTBUF sta $FFFF,y SELF MODIFIED
inc ZPBufPtr
bne WRITE.2
inc ZPBufPtr+1
bra WRITE.2
.ELSE
WRITE.4 lda SSC.STATUS-$8F,x
bit #SSC.STATUS.nDCD true when 0
bne WRITE.9
bit #SSC.STATUS.TDRE Outgoing char?
beq WRITE.4
lda (ZPBufPtr)
sta SSC.DATA-$8F,x
inc ZPBufPtr
bne WRITE.2
inc ZPBufPtr+1
bra WRITE.2
.FIN
WRITE.8 .DO SSCIRQ=1
sta CLRWRITEAUX
.FIN
plp
clc
rts
WRITE.9 lda #MLI.E.IO
.HS 2C BIT ABS
WRITE.99 lda #E.NODATA
.DO SSCIRQ=1
sta CLRWRITEAUX
.FIN
plp
sec
rts
*--------------------------------------
READ.WRITE.Init ldx DEVSLOTn08F
STATUS.CONTROL.Init
>STYA ZPIOCTL
ldy #S.IOCTL.BUFPTR
lda (ZPIOCTL),y
sta ZPBufPtr
iny
lda (ZPIOCTL),y
sta ZPBufPtr+1
iny #S.IOCTL.BYTECNT
lda (ZPIOCTL),y
eor #$ff
sta ZPCount
iny
lda (ZPIOCTL),y
eor #$ff
sta ZPCount+1
rts
*--------------------------------------
* IRQ Handler
* on exit, CC if handled
*--------------------------------------
.DO SSCIRQ=1
IRQ ldx DEVSLOTn08F
lda SSC.STATUS-$8F,x
* and #SSC.STATUS.IRQ Useless
bpl IRQ.9 IRQ from this device ? no, exit !!!!Applewin bug #308!!!!
sta SETREADAUX
sta SETWRITEAUX
bit #SSC.STATUS.RDRF incoming char?
beq IRQ.2
*------------ IRQ In
pha
lda INBUF.HEAD
tay save actual head for later
inc
cmp INBUF.TAIL
beq IRQ.1 buffer full, discard and exit
sta INBUF.HEAD
lda SSC.DATA-$8F,x read data to clear IRQ
IRQ.INBUF sta $FFFF,y SELF MODIFIED
IRQ.1 pla
*------------ IRQ Out
IRQ.2 bit #SSC.STATUS.TDRE
beq IRQ.8 no transmission possible....
ldy OUTBUF.TAIL something to transmit ?
cpy OUTBUF.HEAD
beq IRQ.8 in that case, HOW TO CLEAR IRQ ????
IRQ.OUTBUF lda $FFFF,y SELF MODIFIED
sta SSC.DATA-$8F,x write data to clear IRQ
inc OUTBUF.TAIL
IRQ.8 sta CLRREADAUX
sta CLRWRITEAUX
clc
rts
IRQ.9 sec
rts
.FIN
*--------------------------------------
DRV.CS.END
DEVSLOTn08F .BS 1
.DO SSCIRQ=1
DEVCMD .DA #SSC.CMD.NOP+SSC.CMD.TEIRQ+SSC.CMD.DTR
DEVCTL .DA #SSC.CTL.1S+SSC.CTL.8D+SSC.CTL.CLKINT+SSC.CTL.B9600
.ELSE
DEVCMD .DA #SSC.CMD.NOP+SSC.CMD.TE+SSC.CMD.RIRQDIS+SSC.CMD.DTR
DEVCTL .DA #SSC.CTL.1S+SSC.CTL.8D+SSC.CTL.CLKINT+SSC.CTL.B115200
.FIN
DEVFLOWCTRL .BS 1
.DO SSCIRQ=1
INBUF.TAIL .BS 1
INBUF.HEAD .BS 1
OUTBUF.TAIL .BS 1
OUTBUF.HEAD .BS 1
hINBUF .BS 1
hOUTBUF .BS 1
.FIN
*--------------------------------------
DIB .DO SSCIRQ=1
.DA #S.DIB.S.WRITE+S.DIB.S.READ+S.DIB.S.IRQ
.ELSE
.DA #S.DIB.S.WRITE+S.DIB.S.READ
.FIN
.DA #0,#0,#0
>PSTR "Serial Card/Port"
.DA #S.DIB.T.CHAR
.DA #0
.DA K.VER
*--------------------------------------
DCB .DA #S.DCB.T.COM
.DA #0 FLAGS
.DO SSCIRQ=1
.DA >9600 BAUD (DWORD)
.ELSE
.DA >115200
.FIN
.DA #8 DATA
.DA #1 STOP
.DA #'N' PARITY
.DA #'N' FLOW
*--------------------------------------
DRV.END
MAN
SAVE usr/src/shared/x.ssc.drv.s
LOAD usr/src/drv/ssc.drv.s
ASM
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