A2osX/DRV/UTHERNET.DRV.S.txt
2017-03-13 08:07:07 +01:00

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PR#3
PREFIX /A2OSX.SRC
LOMEM $A00
INC 1
AUTO 6
.LIST OFF
.OP 65C02
.OR $2000
.TF /A2OSX.BOOT/DRV/UTHERNET.DRV
*--------------------------------------
.INB /A2OSX.DEV/INC/MACROS.I
.INB /A2OSX.DEV/INC/A2OSX.I
.INB /A2OSX.DEV/INC/NET.8900A.I
.INB /A2OSX.DEV/INC/LIBTCPIP.I
*--------------------------------------
ZPTmpPTR .EQ ZPDRV
*--------------------------------------
* 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 DEV.HEADER-CS.START Device Header Offset
.DA DRV.CS.START-CS.START Driver Code Offset
.DA DRV.CS.END-DRV.CS.START Drv Code Length
*--------------------------------------
* 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.DEV.HEADER.NAME .DA DEV.HEADER.NAME
.DA 0 End Of Reloc Table
*--------------------------------------
Dev.Detect >STYA ARGS
>LDYA L.MSG.DETECT
>SYSCALL CPrintFYA
ldx #$70
.1 txa IO based detection, avoid scanning in Disk Controller IO!!!!
lsr
lsr
lsr
lsr
tay
lda A2osX.SLOTS,y
bne .2
>LDYAI PP.ID
>STYA PacketPagePTR,x
>LDYA PacketPageDATA,x
cpy #DEVID
bne .2
cmp /DEVID
beq .3
.2 dec DEV.HEADER.NAME+4
txa
sec
sbc #$10
tax
bne .1
>LDYA L.MSG.DETECT.KO
>SYSCALL CPrintFYA
lda #$28 MLI.ERR.NODEV
sec
rts
.3 stx DEVSLOTx0
txa
lsr
lsr
lsr
lsr
tay
lda #A2osX.SLOTS.NET
sta A2osX.SLOTS,y
>LDYAI PP.ID+2 Get Revision# of ths chip...
>STYA PacketPagePTR,x
>LDYA PacketPageDATA,x
>STYA DEVSTAT+S.DEVSTAT.VERSION set Hardware version
>LDYA ARGS
>STYA ZPTmpPTR
lda (ZPTmpPTR)
bne .4
lda #$00
sta MAC
lda #$0E
sta MAC+1
lda #$3A
sta MAC+2
lda A2osX.RANDOM16
eor A2osX.TIMER16
sta MAC+3
eor A2osX.RANDOM16+1
sta MAC+4
eor A2osX.TIMER16+1
sta MAC+5
bra .8
.4 jsr DecodeMac
bcc .8
lda #DEVMGR.ERRICL
sec
rts
.8 >PUSHW L.DEV.HEADER.NAME
>LDYA L.MSG.DETECT.OK
>SYSCALL CPrintFYA
clc
rts
*--------------------------------------
.INB DRV/X.NET.DRV.S
*--------------------------------------
CS.END
MSG.DETECT >CSTR "UtherNet/CS8900A Driver.\r\n"
MSG.DETECT.OK >CSTR "UtherNet/CS8900A Installed As Device : %S\r\n"
MSG.DETECT.KO >CSTR "Hardware Not Found.\r\n"
ARGS .BS 2
*--------------------------------------
* Device Header (16 Bytes)
*--------------------------------------
DEV.HEADER .DA DRV.CS.START
.DA #S.DEV.S.BLOCK+S.DEV.S.WRITE+S.DEV.S.READ
DEV.HEADER.NAME .DA #4
.AS "ETH7" NAME
*--------------------------------------
* Driver Code
*--------------------------------------
DRV.CS.START cld
jmp (.1,x)
.1 .DA STATUS
.DA READBLOCK
.DA WRITEBLOCK
.DA BADCALL
.DA BADCALL
.DA BADCALL
.DA OPEN
.DA CLOSE
.DA BADCALL
.DA BADCALL
L.DEVSTAT .DA DEVSTAT
.DA 0 end or relocation
*--------------------------------------
BADCALL lda #1 MLI.ERR.BADCALL
sec
rts
*--------------------------------------
STATUS lda #S.DEVSTAT.NET.STATUS.10
sta LINK.STATUS
ldx DEVSLOTx0
>LDYAI PP.LineST
>STYA PacketPagePTR,x
>LDYA PacketPageDATA,x
tya
and #PP.LineST.LinkOK
bne .1
lda LINK.STATUS
ora #S.DEVSTAT.NET.STATUS.OK
sta LINK.STATUS
.1 >LDYAI PP.TestCTL
>STYA PacketPagePTR,x
>LDYA PacketPageDATA,x
and /PP.TestCTL.FDX
bne .2
lda LINK.STATUS
ora #S.DEVSTAT.NET.STATUS.FD
sta LINK.STATUS
.2 >LDYA L.DEVSTAT
clc
rts
*--------------------------------------
READBLOCK ldx DEVSLOTx0
>LDYAI PP.RxEvent
>STYA PacketPagePTR,x
>LDYA PacketPageDATA,x
and /PP.RxEvent.RxOK+PP.RxEvent.Brdcast+PP.RxEvent.IA
bne READBLOCK.RxOK
lda #ERR.DEV.NOFRAME
READBLOCK.Err sec
rts
READBLOCK.RxOK and /PP.RxEvent.Brdcast
beq .10
lda #$80
.10 sta .8+3
>LDYA RTDATA,x discard RxStatus
lda RTDATA+1,x get RxLength
sta Size+1
pha
lda RTDATA,x
sta Size
clc
adc #2
tay
pla
adc #0
>PUSHYA Size+2
>PUSHBI 0
>SYSCALL GetMem
bcs READBLOCK.Err
>STYA ZPTmpPTR
stx .8+1
sty .8+3
sta .8+5
lda Size
sta (ZPTmpPTR)
eor #$ff
sta Counter
ldy #1
lda Size+1
sta (ZPTmpPTR),y
eor #$ff
sta Counter+1
iny
ldx DEVSLOTx0
.1 inc Counter
bne .12
inc Counter+1
beq .8
.12 lda RTDATA,x
sta (ZPTmpPTR),y
iny
bne .2
inc ZPTmpPTR+1
.2 inc Counter
bne .21
inc Counter+1
beq .8
.21 lda RTDATA+1,x
sta (ZPTmpPTR),y
iny
bne .1
inc ZPTmpPTR+1
bne .1
.8 ldx #$ff hMem
ldy #$ff PtrLO
lda #$ff PtrHI
clc
rts
*--------------------------------------
WRITEBLOCK >STYA ZPTmpPTR
lda (ZPTmpPTR)
sta Size
eor #$ff
sta Counter
ldy #1
lda (ZPTmpPTR),y
sta Size+1
eor #$ff
sta Counter+1
ldx DEVSLOTx0
>LDYAI PP.TxCMD.LID+PP.TxCMD.TxStartFULL
>STYA TxCMD,x
>LDYA Size
>STYA TxLength,x
>LDYAI PP.BusST
>STYA PacketPagePTR,x
ldy #16
.1 lda PacketPageDATA,x
and #PP.BusST.TxBidErr
bne .9
lda PacketPageDATA+1,x
and /PP.BusST.Rdy4TxNOW
bne WRITEBLOCK.1
lda #0
.2 dec
bne .2
dey
bne .1
.9 lda #ERR.DEV.NOBUFFER
sec
rts
WRITEBLOCK.1 ldy #S.ETH.SRCMAC+5
ldx #5
.10 lda MAC,x
sta (ZPTmpPTR),y
dey
dex
bpl .10
ldx DEVSLOTx0
ldy #2
.1 inc Counter
bne .11
inc Counter+1
beq .8
.11 lda (ZPTmpPTR),y
sta RTDATA,x
iny
bne .2
inc ZPTmpPTR+1
.2 inc Counter
bne .21
inc Counter+1
beq .8
.21 lda (ZPTmpPTR),y
sta RTDATA+1,x
iny
bne .1
inc ZPTmpPTR+1
bne .1
.8 clc
rts
*--------------------------------------
OPEN jsr CLOSE
>LDYAI PP.RxCTL
>STYA PacketPagePTR,x
>LDYAI PP.RxCTL.LID+PP.RxCTL.RxOKA+PP.RxCTL.IA+PP.RxCTL.BroadcastA
>STYA PacketPageDATA,x
>LDYAI PP.MAC
>STYA PacketPagePTR,x
>LDYA MAC
>STYA PacketPageDATA,x
>LDYAI PP.MAC+2
>STYA PacketPagePTR,x
>LDYA MAC+2
>STYA PacketPageDATA,x
>LDYAI PP.MAC+4
>STYA PacketPagePTR,x
>LDYA MAC+4
>STYA PacketPageDATA,x
>LDYAI PP.LineCTL
>STYA PacketPagePTR,x
>LDYAI PP.LineCTL.LID+PP.LineCTL.SerRxOn+PP.LineCTL.SerTxOn+PP.LineCTL.10BaseT
>STYA PacketPageDATA,x
clc
rts
*--------------------------------------
CLOSE ldx DEVSLOTx0
>LDYAI PP.SelfCTL
>STYA PacketPagePTR,x
>LDYAI PP.SelfCTL.LID+PP.SelfCTL.RESET
>STYA PacketPageDATA,x
>LDYAI PP.SelfCTL
>STYA PacketPagePTR,x
>LDYAI PP.SelfCTL.LID
>STYA PacketPageDATA,x
clc
rts
*--------------------------------------
DRV.CS.END
DEVSLOTx0 .BS 1
Size .BS 2
Counter .BS 2
*--------------------------------------
DEVSTAT .DA #S.DEV.S.BLOCK+S.DEV.S.WRITE+S.DEV.S.READ
.BS 3 size
>PSTR "Uthernet/CS8900A"
.DA #S.DEVSTAT.TYPE.NET
.BS 1 Subtype
.BS 2 Version
*--------------------------------------
FLAGS .DA #0
LINK.STATUS .BS 1 OK/DUPLEX/SPEED
MAC .BS 6
MAN
SAVE DRV/UTHERNET.DRV.S
ASM