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A2osX/SYS/PM.VEDRIVE.S.BK.txt

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ProDOS.FX:XCLK support, PM.VEDRIVE
2022-04-19 18:24:34 +00:00
NEW
AUTO 3,1
*--------------------------------------
* Drivers
*--------------------------------------
* OP = 2 : Write drv1
* OP = 3 : Read drv1
* OP = 4 : Write drv2
* OP = 5 : Read drv2
* CMD = $C5+OP+BLKLO+BLKHI+CHKSUM
* DO NOT trash DRV.COMMAND...DRV.BLKNUM as ProDOS
* reuses them after Block operation
* A1,A2 are used by Disk II Driver,
* so we use it safely as Tmp Ptr
*--------------------------------------
DRV.A1L .EQ $3C
DRV.A1H .EQ $3D
DRV.A2L .EQ $3E
DRV.A2H .EQ $3F
DRV.COMMAND .EQ $42
DRV.UNITNUM .EQ $43
DRV.BUFF .EQ $44
DRV.BLKNUM .EQ $46
*--------------------------------------
DRV.BLK .PH DRV.BLK.START Main LC Bnk 2 $D001->$DFFF
DRV.BLK.1 lda DRV.COMMAND S=0,R=1,W=2,F=3
bne .1
bit DRV.UNITNUM return Status
bmi .3
ldx DRV.D1TotalBlks
ldy DRV.D1TotalBlks+1
bra .8
.3 ldx DRV.D2TotalBlks
ldy DRV.D2TotalBlks+1
.8 lda #0
clc
rts
.1 cmp #3
beq .8 Format ....
bcs DRV.BLK.CMD.ERR more....IO error
ora #2 W=2,R=3
ldy DRV.UNITNUM
bpl .2
adc #2 CC from bcs
.2 sta DRV.UDPBuf.Cmd store cmd
eor #ADT.CMD.VSD
eor DRV.BLKNUM
eor DRV.BLKNUM+1
sta DRV.UDPBuf.Sum Compute & store CheckSum
lda DRV.BLKNUM
sta DRV.UDPBuf.BlkL
lda DRV.BLKNUM+1
sta DRV.UDPBuf.BlkH
*--------------------------------------
lda DRV.COMMAND
dec 1-1=0 if read
bne DRV.BLK.CMD.W go write
*--------------------------------------
* Read block
*--------------------------------------
DRV.BLK.CMD.R >LDYAI S.UDP+5
jsr DRV.NIC.SendUDP
bcs DRV.BLK.CMD.ERR
jsr DRV.BLK.GetFrame
bcs .9
ldy #DRV.R200.L
.6 lda DRV.R200-1,y
sta $200-1,y
dey
bne .6
inc DRV.BUFF+1
jsr $200
dec DRV.R200.DEC
dec DRV.BUFF+1
jsr $200
clc
.9 rts
DRV.BLK.CMD.ERR lda #MLI.E.IO
sec
rts
*--------------------------------------
* Write Block
*--------------------------------------
DRV.BLK.CMD.W ldy #DRV.W200.L
.1 lda DRV.W200-1,y
sta $200-1,y
dey
bne .1
inc DRV.BUFF+1
stz DRV.UDPBuf.Data+512
jsr $200
dec DRV.W200.DEC
dec DRV.BUFF+1
jsr $200
>LDYAI S.UDP+5+512+1
jsr DRV.NIC.SendUDP
bcs DRV.BLK.CMD.ERR
jsr DRV.BLK.GetFrame
bcs .9
clc
.9 rts
*--------------------------------------
DRV.BLK.GetFrame
stz DRV.TimeOut
.1 lda VBL
.2 pha
jsr DRV.NIC.Rcvd
pla
bcc .3
eor VBL
bpl .2
dec DRV.TimeOut
bne .1
lda #MLI.E.IO
* sec
rts
.3 jsr DRV.BLK.CheckFrame
bcs .1
rts
*--------------------------------------
DRV.BLK.CheckFrame
lda DRV.InBuf+S.ETH.EII.TYPE
cmp /S.ETH.EII.TYPE.IP
bne .9
lda DRV.InBuf+S.ETH.EII.TYPE+1
cmp #S.ETH.EII.TYPE.IP
beq .4
cmp #S.ETH.EII.TYPE.ARP
bne .9
lda DRV.InBuf+S.ARP.OPERATION+1
cmp #S.ARP.OPERATION.REQ
bne .9
ldx #3
.1 lda DRV.InBuf+S.ARP.SPA,x
cmp DRV.UDPBuf+S.IP.DST,x
bne .9
dex
bpl .1
jsr DRV.NIC.SendARP
.9 sec
rts
.4 lda DRV.InBuf+S.IP.PROTOCOL
cmp #S.IP.PROTOCOL.UDP
bne .9
ldx #3
.5 lda DRV.InBuf+S.IP.SRC,x
cmp DRV.UDPBuf+S.IP.DST,x
bne .9
lda DRV.InBuf+S.IP.DST,x
cmp DRV.UDPBuf+S.IP.SRC,x
bne .9
dex
bpl .5
lda DRV.InBuf+S.TCPUDP.SRCPORT
cmp DRV.UDPBuf+S.TCPUDP.DSTPORT
bne .9
lda DRV.InBuf+S.TCPUDP.SRCPORT+1
cmp DRV.UDPBuf+S.TCPUDP.DSTPORT+1
bne .9
clc
rts
*--------------------------------------
DRV.BLK.IPUDPCheksum
stz DRV.UDPBuf+S.IP.HDR.CHECKSUM
stz DRV.UDPBuf+S.IP.HDR.CHECKSUM+1
stz DRV.CheckSum
stz DRV.CheckSum+1
lda DRV.FrameSize
sec
sbc #S.ETH.EII
sta DRV.UDPBuf+S.IP.TOTAL.LENGTH+1
lda DRV.FrameSize+1
sbc /S.ETH.EII
sta DRV.UDPBuf+S.IP.TOTAL.LENGTH
clc
ldy #S.IP.V.IHL
ldx #10 10 words for IP Header
.1 lda DRV.UDPBuf,y
adc DRV.CheckSum
sta DRV.CheckSum
iny
lda DRV.UDPBuf,y
adc DRV.CheckSum+1
sta DRV.CheckSum+1
iny
dex
bne .1
lda DRV.CheckSum
adc #0
eor #$FF
sta DRV.UDPBuf+S.IP.HDR.CHECKSUM
lda DRV.CheckSum+1
adc #0
eor #$FF
sta DRV.UDPBuf+S.IP.HDR.CHECKSUM+1
*--------------------------------------
stz DRV.UDPBuf+S.UDP.CHECKSUM
stz DRV.UDPBuf+S.UDP.CHECKSUM+1
lda DRV.FrameSize
sec
sbc #S.IP
sta DRV.UDPBuf+S.UDP.LENGTH+1
pha
eor #$ff
sta DRV.nCnt
lda DRV.FrameSize+1
sbc /S.IP
sta DRV.UDPBuf+S.UDP.LENGTH
tax
eor #$ff
sta DRV.nCnt+1
clc
pla A,X = UDP Len
adc #S.IP.PROTOCOL.UDP
sta DRV.CheckSum+1
txa
adc /S.IP.PROTOCOL.UDP (all zero)
sta DRV.CheckSum
ldy #S.IP.SRC
ldx #4 4 words for SRC & DST IP
.2 lda DRV.UDPBuf,y
adc DRV.CheckSum
sta DRV.CheckSum
iny
lda DRV.UDPBuf,y
adc DRV.CheckSum+1
sta DRV.CheckSum+1
iny
dex
bne .2
>LDYAI DRV.UDPBuf
>STYA DRV.A1L
ldy #S.IP
.3 inc DRV.nCnt
bne .4
inc DRV.nCnt+1
beq .8
.4 lda (DRV.A1L),y
adc DRV.CheckSum
sta DRV.CheckSum
iny
bne .5
inc DRV.A1H
.5 inc DRV.nCnt
bne .6
inc DRV.nCnt+1
beq .7
.6 lda (DRV.A1L),y
adc DRV.CheckSum+1
sta DRV.CheckSum+1
iny
bne .3
inc DRV.A1H
bra .3
.7 lda #0
adc DRV.CheckSum+1
sta DRV.CheckSum+1
.8 lda DRV.CheckSum
adc #0 Don't forget to add last carry!!!
eor #$FF
sta DRV.UDPBuf+S.UDP.CHECKSUM
lda DRV.CheckSum+1
adc #0 Don't forget to add last carry!!!
eor #$FF
sta DRV.UDPBuf+S.UDP.CHECKSUM+1
rts
*--------------------------------------
DRV.R200 lda DRV.InBuf+S.UDP+10+256,y
DRV.R200.DEC .EQ *-DRV.R200+$1ff
bit RRAMWRAMBNK1
sta (DRV.BUFF),y
bit RRAMWRAMBNK2
iny
bne DRV.R200
rts
DRV.R200.L .EQ *-DRV.R200
*--------------------------------------
DRV.W200 bit RRAMWRAMBNK1
lda (DRV.BUFF),y
bit RRAMWRAMBNK2
sta DRV.UDPBuf.Data+256,y
DRV.W200.DEC .EQ *-DRV.W200+$1ff
eor DRV.UDPBuf.Data+512
sta DRV.UDPBuf.Data+512
iny
bne DRV.W200
rts
DRV.W200.L .EQ *-DRV.W200
*--------------------------------------
DRV.D1TotalBlks .BS 2
DRV.D2TotalBlks .BS 2
DRV.BLK.Slotn0 .BS 1 SELF MODIFIED slot 0n
DRV.TimeOut .BS 1
DRV.FrameSize .BS 2
DRV.nCnt .BS 2
DRV.CheckSum .BS 2
*--------------------------------------
.EP
*--------------------------------------
.LIST ON
DRV.BLK.SIZE .EQ *-DRV.BLK
.LIST OFF
*--------------------------------------
MAN
SAVE usr/src/sys/pm.vedrive.s.bk
LOAD usr/src/sys/pm.vedrive.s
ASM
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