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A2osX/ProDOS.FX/ProDOS.S.LDR.txt
burniouf 2cf7512e99 SP tools
2022-01-30 22:47:08 +01:00

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NEW
AUTO 3,1
*--------------------------------------
.MA DEBUG
:1 bit $C000
bpl :1
sta $C010
.EM
*--------------------------------------
.MA DEBUGOA
bit $C061
bpl :1
>DEBUG
:1 .EQ *
.EM
*--------------------------------------
H2000 jmp prostart
jmp atalkset
jmp p16start
*--------------------------------------
LDR.MSG.PRODOS .AT "PRODOS FX 0.94"
LDR.MSG.UNSUPP .AT "UNSUPPORTED HARDWARE"
LDR.MSG.IIe .AT "//e"
LDR.MSG.IIc .AT "//c"
LDR.MSG.IIgs .AT "IIgs"
LDR.MSG.Unknown .AT "Unknown"
LDR.MSG.CLK .AT "XClk"
LDR.MSG.RAM .AT "/RAM"
LDR.MSG.ROOTERR .AT "ERR reading CATALOG"
*--------------------------------------
p16start inc LDR.BootFlag set = 2 for GQuit rts
atalkset inc LDR.BootFlag set = 1 for appletalk rts
prostart lda unitnum
sta LDR.MLIOL.P+1
.DO READCAT=1
sta LDR.MLIRB.P+1
.FIN
cld
bit RROMBNK2
sta CLR80DISP
sta CLR80STORE
jsr init
jsr setvid
jsr setkbd
jsr home
lda #32
ldx #39
.1 sta $400,x
dex
bpl .1
ldx #LDR.MSG.PRODOS
jsr LDR.PrintX
sec
jsr idroutine returns system info
bcs .2 taken if not a //gs
lda #$80
trb newvideo video mode select
* test for at least a 65c02
.2 sed
lda #$99
clc
adc #$01
cld
bmi LDR.UNSUPP.HW
stz auxsp
sta SETALTZP
stz auxsp
lda auxsp
bne LDR.UNSUPP.HW
dec auxsp init aux sp to $FF
lda auxsp
beq LDR.UNSUPP.HW
sta CLRALTZP
lda auxsp
bne LDR.UNSUPP.HW NO 128k
LDR.CheckROM ldx #LDR.MSG.IIE
lda #MACHID.T.IIe+MACHID.M.128+MACHID.COL80
ldy version check hardware id
cpy #$06 apple //e?
beq .1 if yes
cpy #$EA apple //+ or ///?
beq LDR.UNSUPP.HW
ldx #LDR.MSG.UNKNOWN
bra m128k machine is unknown, Assume //e Enh 128k
.1 ldy zidbyte //c ?
bne .2
ldy kbd //c, check for keypress
cpy #$9B escape? (to disable accelerator)
bne .11
sta KBDSTROBE clear keyboard
.11 lda #MACHID.T.IIc+MACHID.M.128+MACHID.COL80
ldx #LDR.MSG.IIC
bra m128k
.2 cpy #$EA
beq LDR.UNSUPP.HW //e UNenh....
cpy #$E0
beq .3
ldx #LDR.MSG.UNKNOWN
bra m128k not a //e Enh....
.3 sec
jsr idroutine //gs ????
bcs m128k no.....
inc LDR.cortland
ldx #LDR.MSG.IIGS
lda #MACHID.T.IIe+MACHID.M.128+MACHID.COL80+MACHID.CLK
bra m128k
LDR.UNSUPP.HW ldx #LDR.MSG.UNSUPP
jsr LDR.PrintX
bne * no BRA !!! (6502)
*--------------------------------------
m128k sta idapple Save MACHID in temp location
lda #$20 "PRODOS" -> "ProDOS"
tsb LDR.MSG.PRODOS+1
tsb LDR.MSG.PRODOS+2
jsr LDR.Scr80Init X = LDR.MSG.machine type
ldx #$F
.2 lda LDR.3F0,x
sta $3F0,x
dex
bpl .2
lda #$01 patch for the gs rom
trb statereg to force off intcxrom
ldx #PAKME.ILDR-PAKME.Table
ldy #ILDR.START
lda /ILDR.START
jsr X.Unpak.XatYA
ldx #PAKME.GP-PAKME.Table
ldy #MLI
lda /MLI
jsr X.Unpak.XatYA
jsr LDR.LCBNK1
ldx #PAKME.XRW-PAKME.Table
ldy #$D000
lda /$D000
jsr X.Unpak.XatYA
ldx #0
.1 stz FCBs,x
stz VCBs,x
inx
bne .1
ldx #PAKME.XDOS-PAKME.Table
ldy #$DE00
lda /$DE00
jsr X.Unpak.XatYA
ldx #XDOS.DATA.LEN
.3 stz XDOS.DATA-1,x
dex
bne .3
ldx #PAKME.IRQ-PAKME.Table
ldy #$FF9B
lda /$FF9B
jsr X.Unpak.XatYA
LDR.IRQ lda RROMWRAMBNK2
ldy irqv interrupt vector
ldx irqv+1 x = high byte
jsr LDR.LCBNK1
sta SETALTZP
sty irqv save irq vector in aux lc
stx irqv+1
sta CLRALTZP
sty irqv
stx irqv+1 save irq vector in main lc
lda #calldisp
sta jspare+1 P8 system death vector
lda /calldisp
sta jspare+2
.DO LOWERCASE=0
lda kversion
sta xdosver save current version for dir use
.FIN
lda idapple
sta MACHID
lda LDR.cortland
beq LDR.II branch if // family
*--------------------------------------
LDR.IIGS sta cortflag
lda #calldisp
sta cortdisp
lda /calldisp
sta cortdisp+1
* lda RROMWRAMBNK2
* stz vmode force setvid to reset cursor
* jsr setvid reset output to screen
* jsr LDR.LCBNK1
lda #'C'
ldx PAKME.CCLK
ldy PAKME.CCLK+1
jsr LDR.SetupCLK
* ldx #PAKME.SEL2-PAKME.Table
* ldy #$1000
* lda /$1000
* jsr X.Unpak.XatYA
ldx #PAKME.SEL2-PAKME.Table
jsr LDR.SetupQC
*--------------------------------------
lda LDR.BootFlag
bne .1 branch if prodos 8 alone
* running from gs/os shell so zero out os_boot for appletalk
sta OS_BOOT indicates O/S initially booted.
jsr patch101 patch for gs/os - rev note #101
.1 bra LDR.Common
*--------------------------------------
LDR.II ldx #PAKME.SEL1-PAKME.Table
jsr LDR.SetupQC
jsr LDR.ClkDevScan
*--------------------------------------
LDR.Common jsr LDR.BlkDevScan
jsr LDR.SetupRAM
*--------------------------------------
lda LDR.BootFlag get setup entry point flag
beq LDR.ReadRoot taken if normal boot.
bit RROMBNK2
rts return to caller at setup entry point.
*--------------------------------------
LDR.ReadRoot lda LDR.MLIOL.P+1 place boot devnum in globals
sta devnum last device used
jsr MLI
.DA #MLIONLINE
.DA LDR.MLIOL.P
bcs .9
lda pbuf+1 get volume name length.
and #$0F strip devnum
beq .9
inc add 1 for leading '/'
sta pbuf save prefix length.
lda #'/' place leading '/' in prefix buffer
sta pbuf+1
jsr MLI
.DA #MLISETPREFIX
.DA LDR.MLISETP.P
bcs .9
.DO READCAT=1
stz dst
lda /dbuf
ldy #$02 read directory into buffer
ldx #0
.1 sta dst+1
sta LDR.MLIRB.P+3 Data buf HI
sty LDR.MLIRB.P+4 Blk Num LO
stx LDR.MLIRB.P+5 Blk Num HI
jsr MLI
.DA #MLIREADBLOCK
.DA LDR.MLIRB.P
bcs .9
ldy #$03 get next block# from link
lda (dst),y
tax
dey
ora (dst),y 00 00 -> Last Block
beq .8
lda (dst),y
tay
lda dst+1
inc
inc add $200 to buffer pointer
cmp /dbuf+$800 until it points past end of buffer.
bcc .1 if ok, read next block.
.FIN
.8 jmp $800 jmp to "load interpreter" code
.9 ldx #LDR.MSG.ROOTERR
jsr LDR.PrintX
bra *
*--------------------------------------
LDR.SetupQC bit RRAMWRAMBNK2 read/write RAM bank 2
bit RRAMWRAMBNK2
ldy #$D100
lda /$D100
jsr X.Unpak.XatYA
lda #$EE byte to distinguish LC bank 2
sta $D000
*--------------------------------------
LDR.LCBNK1 lda RRAMWRAMBNK1 switch in LC bank 1
lda RRAMWRAMBNK1
rts
*--------------------------------------
DS121x.DATA1 .EQ idxl
DS121x.DATA2 .EQ A1L
*--------------------------------------
LDR.ClkDevScan jsr LDR.IsIIc
bcc LDR.ClkDevNCLK //c only
LDR.ClkDevDCLK php
sei
lda $CFFF
lda $C400
ldx #8
stz $C0C0
stz $C0C1
stx $C0C2
lda $C0C3
pha
.1 lda DS121x.SIG-1,x
ldy #8
.2 sta $C0C3
stz $C0C0
lsr
dey
bne .2
dex
bne .1
ldx #8
.4 ldy #8
stz $C0C0
.5 lda $C0C3
lsr
ror DS121x.DATA1-1,x
dey
bne .5
dex
bne .4
stz $C0C0
pla
sta $C0C3
plp
sed
ldx #DS121x.ValidHI-DS121x.ValidLO
.6 lda DS121x.DATA1-1,x
cmp DS121x.ValidLO-1,x
bcc .9
cmp DS121x.ValidHI-1,x
bcc .7
bne .9
.7 dex
bne .6
cld
lda #'D'
ldx PAKME.DCLK
ldy PAKME.DCLK+1
jmp LDR.SetupCLK
.9 cld
*--------------------------------------
LDR.ClkDevNCLK php
sei
lda RDCXROM
php
sta SETCXROM
sta NSC.IOBASE
* lda $C00B Workaround for Ultrawarp bug
ldx #8
.1 ldy #8
.2 lda NSC.IOBASE+4
lsr
ror DS121x.DATA1-1,x
dey
bne .2
dex
bne .1
*--------------------------------------
sta NSC.IOBASE
* lda $C00B Workaround for Ultrawarp bug
lda NSC.IOBASE+4 Reset DS1216E comparison register with READ A2=1
ldy #8 Read 8 bytes...
.3 lda DS121x.SIG-1,y
phy
ldy #8 ....of 8 bits
.4 ldx #0
lsr
bcc .5
inx
.5 bit NSC.IOBASE,x Write Pattern bit in A0, with A2=0
dey
bne .4
ply
dey
bne .3
*--------------------------------------
ldx #8
.6 ldy #8
.7 lda NSC.IOBASE+4
lsr
ror DS121x.DATA2-1,x
dey
bne .7
dex
bne .6
plp
bmi .8
sta CLRCXROM
.8 plp
*--------------------------------------
ldx #8
.9 lda DS121x.DATA1-1,x
cmp DS121x.DATA2-1,x
bne .90
dex
bne .9
bra LDR.ClkDevTCLK
.90 lda #'N'
ldx PAKME.NCLK
ldy PAKME.NCLK+1
bra LDR.SetupCLK
*--------------------------------------
LDR.ClkDevTCLK jsr LDR.IsIIc
bcs .9
stz idxl
lda #$C1
sta idxl+1
lda #1
sta LDR.SlotIdx
.1 jsr LDR.CheckTClkID
bcs .7
* sta SETPAGE2
* stz $478,x
* stz $7f8,x
* sta CLRPAGE2
stz $478,x
stz $7f8,x
lda idxl+1
asl
asl
asl
asl
tax
stz $c080,x
lda $c088,x
lda $c080,x
lda #'T'
ldx PAKME.TCLK
ldy PAKME.TCLK+1
jsr LDR.SetupCLK
lda idxl+1
sta TCLK.Cx1+2
sta TCLK.Cx2+2
rts
.7 inc LDR.SlotIdx
inc idxl+1
lda idxl+1
cmp #$C8
bne .1
.9 rts
*--------------------------------------
LDR.SetupCLK stx ZPInBufPtr
sty ZPInBufPtr+1
sta LDR.MSG.CLK
ldx #LDR.MSG.CLK
jsr LDR.PrintX
jsr LDR.LCBNK1
lda #$D742
sta ZPOutBufPtr
lda /$D742
sta ZPOutBufPtr+1
jsr X.Unpak
lda #$4C enable clock routine by putting a jmp
sta clockv in front of clock vector
lda #MACHID.CLK
tsb MACHID
LDR.SetupCLK.RTS
rts
*--------------------------------------
LDR.SetupRAM lda DEVCNT
cmp #13
bcs LDR.SetupCLK.RTS
jsr LDR.LCBNK1
ldx #PAKME.RAM-PAKME.Table
ldy #$FF00
lda /$FF00
jsr X.Unpak.XatYA
sta SETWRITEAUX
ldx #PAKME.RAMX-PAKME.Table
ldy #$0200
lda /$0200
jsr X.Unpak.XatYA
sta CLRWRITEAUX
lda #RAMDRV put driver address into
sta DEVPTRS3D2
lda /RAMDRV
sta DEVPTRS3D2+1
inc DEVCNT count (-1) active devices
ldx DEVCNT
lda #$BF unit num of /RAM
sta DEVLST,x
ldx #LDR.MSG.RAM
jmp LDR.PrintX
*--------------------------------------
* find all disk devices in system slots and set up address
* and device table in prodos global page.
*--------------------------------------
LDR.BlkDevScan bit RROMBNK2 write protect lc ram.
stz idxl
lda #$C7 search slots from high to low
sta idxl+1
lda #7
sta LDR.SlotIdx
.1 ldx LDR.SlotIdx
stz LDR.SlotDevType-1,x
jsr LDR.CheckDiskID
bcs .8 if no ProDOS device in this slot.
ldy #$ff
lda (idxl),y check last byte of $Cn rom (y = $ff)
bne .2 branch if 16 sector disk II.
sta devid =0 since disk ii's have null attributes
lda #XRW.START
sta LDR.driveradr
lda /XRW.START
sta LDR.driveradr+1
sec 2 devices
jsr LDR.AddBlkDevs
bra .7
.2 cmp #$FF if = $FF then 13 sector disk II.
beq .8 ignore if 13 sector boot ROM
ldy #$07 check for a smartport device.
lda (idxl),y
bne .3 no smartport
jsr LDR.AddSPDevs
bra .7
.3 ldy #$FE BLK device...
lda (idxl),y get attributes.
and #$03 verify it provides read and status calls.
cmp #$03
bne .7 assume it's an off-brand disk
lda (idxl),y get back ID byte
lsr
lsr
lsr
lsr
sta devid ->DEV LIST NIBBLE
and #$3 Device count minus 1
inc
ldx LDR.SlotIdx
sta LDR.SlotDevCnt-1,x
tax
iny $CnFF
lda (idxl),y
sta LDR.driveradr
lda idxl+1 store hi entry addr (low already done)
sta LDR.driveradr+1
cpx #2 CS if 2 devs or more
jsr LDR.AddBlkDevs install 1 or 2 devices from this slot.
.7
.8 dec idxl+1 next lower slot.
dec LDR.SlotIdx have all slots been checked ?
bne .1
*--------------------------------------
LDR.AddExtraDevs
* stz idxl
lda #$C7
sta idxl+1
lda #7
sta LDR.SlotIdx
.1 ldx LDR.SlotIdx
lda LDR.SlotDevType-1,x
beq .8
lda LDR.SlotDevCnt-1,x
cmp #3
bcc .8
jsr LDR.AddExtraSPDevs
.8 dec idxl+1
dec LDR.SlotIdx
bne .1
LDR.AddExtraDevs.RTS
rts
*--------------------------------------
LDR.AddSPDevs jsr LDR.SetDevID setup the devid byte from attributes
iny #$ff
lda (idxl),y
sta LDR.driveradr
sta .1+1 modify operand
clc
adc #$03
sta LDR.SPVect+1
lda idxl+1
sta LDR.driveradr+1
sta LDR.SPVect+2
sta .1+2 modify operand
asl convert $Cn to $n0
asl
asl
asl
sta unitnum unit number
stz A4L force a prodos status call
stz buf dummy pointer
lda #$10
sta buf+1 dummy pointer should be <> 0
stz bloknml # of bytes to transfer
stz bloknml+1
.1 jsr $0000 SELF MODIFIED
ldy #$FB
lda (idxl),y check device id
and #$02 SCSI ?
beq .2 no, no need to init Cocoon
jsr LDR.SPStatusCall status of Cocoon : A = device = 2 for SCSI
.2 lda #0 set unit# = 0
jsr LDR.SPStatusCall
lda LDR.SPStatusBuf Device count
beq LDR.AddExtraDevs.RTS no devices, so done.
sta LDR.DevCnt
ldx LDR.SlotIdx
inc LDR.SlotDevType-1,x set as smartport
.3 inc LDR.SPStatus.U
jsr LDR.SPStatusCall.U call to get the device status
bcs .7
lda LDR.SPStatusBuf
bpl .7 not a block device
ldx LDR.SlotIdx
inc LDR.SlotDevCnt-1,x
.7 dec LDR.DevCnt
bne .3
ldx LDR.SlotIdx
lda LDR.SlotDevCnt-1,x
beq LDR.AddBlkDevs.RTS
sta LDR.SlotDevCnt-1,x
cmp #2 CC/CS, add 1 or 2 devs
*--------------------------------------
LDR.AddBlkDevs php how many drives (carry).
lda idxl+1 get index to global device table
and #$07 for this slot...
asl
tay into y reg.
asl
asl now form device # = slot #
asl in high nibble.
ora devid combine with attributes.
ldx DEVCNT
inx put device # into device list.
sta DEVLST,x
asl now form drive 2 device number, if any.
plp restore # of devices in carry.
ror if 2 drives, then bit 7=1.
bpl .1 branch if a 1 drive device (e.g. hard drive)
inx else presume that 2nd drive is present.
sta DEVLST,x active device list.
.1 stx DEVCNT save updated device count.
asl shift # of drives back into carry.
lda LDR.driveradr get high address of device driver.
sta DEVPTRS,y device driver table 1.
bcc .2 branch if single drive.
sta DEVPTRS+16,y device driver table 2.
.2 lda LDR.driveradr+1
sta DEVPTRS+1,y
bcc .3
sta DEVPTRS+17,y
.3
LDR.AddBlkDevs.RTS
rts
*--------------------------------------
LDR.AddExtraSPDevs
ldy #$FF get smartport address.
lda (idxl),y
clc
adc #$03 add 3 for smartport call
sta LDR.SPVect+1
lda idxl+1
sta LDR.SPVect+2
jsr LDR.SetDevID set up device attributes
lda #0
jsr LDR.SPStatusCall do a status call on smartport itself
lda LDR.SPStatusBuf # of devices on smartport
cmp #$03
bcc .8 only 2 devices,skip to next one.
dec
dec
sta LDR.DevCnt
lda #3
sta LDR.SPStatus.U
.1 jsr LDR.SPStatusCall.U do status call
lda LDR.SPStatusBuf is this a block device?
bpl .2
jsr LDR.MountSPDevs
bcs .8
.2 inc LDR.SPStatus.U
dec LDR.DevCnt
bne .1
.8 rts
*--------------------------------------
LDR.MountSPDevs ldx #LDR.DEVPTRS.CNT-1
.1 ldy LDR.DEVPTRS.IDX,x
lda DEVPTRS,y device driver table 1
cmp #nodevice
bne .2
lda DEVPTRS+1,y
cmp /nodevice
beq .3
.2 dex
bpl .1
sec
rts
.3 jsr LDR.LCBNK1
tya divide index by 2
lsr
tax
lda LDR.SPStatus.U
sta XDOS.SPUnit-1,x store the smartport unit #
lda LDR.SPVect+1 and entry address.
sta XDOS.SPVectLo-1,x
lda LDR.SPVect+2
sta XDOS.SPVectHi-1,x
bit RROMBNK2 write protect lc ram.
inc DEVCNT
ldx DEVCNT
tya
asl convert to DSSS0000
asl
asl
ora devid include device attributes
sta DEVLST,x in the active device list.
lda #XDOS.SPREMAP
sta DEVPTRS,y device driver table 1
lda /XDOS.SPREMAP
sta DEVPTRS+1,y
clc
rts
*--------------------------------------
LDR.SPStatusCall
sta LDR.SPStatus.U
LDR.SPStatusCall.U
LDR.SPVect jsr $0000 self modifying
.HS 00
.DA LDR.SPStatus.P
rts
*--------------------------------------
LDR.CheckTClkID ldy #6
.HS 2C BIT ABS
LDR.CheckDiskID ldy #5
lda CLRC8ROM switch out $C8 ROMs
.1 lda (idxl),y compare id bytes
cmp dskid,y
bne .3
dey
dey
bpl .1 loop until all 4 id bytes match.
clc
php
.8 ldx LDR.SlotIdx
lda sltbit-1,x
tsb rommap mark bit to flag rom present
.9 plp
rts
.3 sec
php
ldx #0
.4 cmp (idxl),y
bne .9
inx
bne .4
bra .8
*--------------------------------------
LDR.SetDevID ldy #$FE check attributes byte.
lda (idxl),y
lsr move hi nibble to lo nibble for
lsr device table entries.
lsr
lsr
sta devid
rts
*--------------------------------------
LDR.Scr80Init phx Save MDR.MSG
jsr LDR.IsIIc
bcs LDR.Scr80Init2
php
sei
sta SETC3ROM
ldx #COL80IDX.Cnt-1
.1 ldy COL80IDX,x
lda $C300,y
cmp COL80VAL,x
bne .2
dex
bpl .1
lda $C30C is it an apple 80 col compatible card?
and #$F0
cmp #$80
beq .3
.2 sta CLRC3ROM
.3 plp
*--------------------------------------
LDR.Scr80Init2 lda #$8C Reset 80 col screen ($0C:HOME)
jsr $C300
jsr setnorm
jsr home
jsr SETINV
.DO LOGO
lda #20
sta CV
jsr VTAB
lda #LOGO.PAKED
sta ZPInBufPtr
lda /LOGO.PAKED
sta ZPInBufPtr+1
stz ZPOutBufPtr
lda #$A0
sta ZPOutBufPtr+1
jsr X.Unpak
sta CLRHIRES
sta SETMIXED
bit RDIOUDIS
sta SETIOUDIS
sta SETDHIRES
bmi .10
sta CLRIOUDIS
.10 sta CLRTEXT
stz ZPPtr1
lda #$A0
sta ZPPtr1+1
lda #0
.1 pha
jsr GBSCALC
ldy #0
.2 lda (ZPPtr1),y
pha
and #$f
tax
lda PALETTE.AUX,x
sta SETPAGE2
sta (GBASL),y
pla
lsr
lsr
lsr
lsr
tax
lda PALETTE.MAIN,x
sta CLRPAGE2
sta (GBASL),y
iny
cpy #40
bne .2
lda ZPPtr1
clc
adc #40
sta ZPPtr1
bcc .3
inc ZPPtr1+1
.3 ldy #0
.4 lda (ZPPtr1),y
pha
and #$f
tax
lda PALETTE.AUX,x
asl
asl
asl
asl
sta SETPAGE2
ora (GBASL),y
sta (GBASL),y
pla
lsr
lsr
lsr
lsr
tax
lda PALETTE.MAIN,x
asl
asl
asl
asl
sta CLRPAGE2
ora (GBASL),y
sta (GBASL),y
iny
cpy #40
bne .4
lda ZPPtr1
clc
adc #40
sta ZPPtr1
bcc .7
inc ZPPtr1+1
.7 pla
inc
cmp #20
bne .1
.FIN
jsr CLREOL
jsr setnorm
ldx #LDR.MSG.PRODOS
jsr LDR.PrintX
plx MDR.MSG.machine type
*--------------------------------------
LDR.PrintX bit RROMBNK2
lda INVFLG
pha
jsr SETINV
.1 lda $2000,x
pha
ora #$80
jsr COUT
inx
pla
bpl .1
lda #$A0
jsr COUT
pla
sta INVFLG
sta CLRPAGE2 for screen holes proper access
rts
*--------------------------------------
LDR.IsIIc lda MACHID
and #MACHID.T
cmp #MACHID.T.IIc
beq .9
clc
.9 rts
*--------------------------------------
PALETTE.MAIN .HS 00.02.04.06.08.0A.0C.0E
.HS 01.03.05.07.09.0B.0D.0F
PALETTE.AUX .HS 00.01.02.03.04.05.06.07
.HS 08.09.0A.0B.0C.0D.0E.0F
*--------------------------------------
* 16 bytes moved to $03F0 vectors
*--------------------------------------
LDR.3F0 .DA breakv
.DA oldrst
.DA #$5A powerup byte
jmp oldrst '&' vector
jmp oldrst ctrl-y vector
.HS 004000
.DA GP.IRQV global page interrupt vector
*--------------------------------------
* patch to gsos vectors so error is returned for os calls - rev note #101
*--------------------------------------
patch101 php
sei disable interrupts
clc
xce full native mode
>LONGMX
phb save DBR
pha
pha
pea $0000 length of patch
pea $0010 0000/0010 = 16 bytes
pea $3101 user id for prodos 8
pea $8018 attributes (locked/nospec/nocross)
pha
pha
>IIGS NewHandle
lda $01,s retrieve handle
tax
lda $03,s
tay
pea $0000 copy the code into the handle
pea L2C4D
phy
phx
pea $0000 length of patch = 0000/0010
pea $0010
>IIGS PtrToHand
plx low word of handle
plb set DBR to handle's bank
lda >1,x get upper 16 bits of 24 bit address
tay save in y
lda >0,x get low 8 bits of address
and ##$00FF clear high byte
xba put address in high byte
ora ##$005C include JML opcode
sta GSOS2 store in gsos vectors
clc
adc ##$000B
sta GSOS
tya store upper 16 bits too
sta GSOS2+2
adc ##$0000 adj for possible page crossing
sta GSOS+2
plb remove garbage byte from stack
plb restore DBR.
sec
xce back to emulation mode
plp
rts
*--------------------------------------
* copy of the code that goes in the handle
*--------------------------------------
L2C4D lda 1,s
sta 7,s
lda 2,s
sta 8,s
pla
pla
pla
lda ##$00FF #NoOS
sec
rtl
*--------------------------------------
DS121x.SIG .HS 5CA33AC55CA33AC5 Reverted 7->0
DS121x.ValidLO .HS 00010101 Y,M,D,DoW
DS121x.ValidHI .HS 990C1F07
*--------------------------------------
* id bytes: evens for clock, odds for disk
dskid .HS 08.20.28.00.58.03.70
sltbit .HS 02040810204080
*--------------------------------------
COL80IDX .HS 05070BFA + $C30C and $80 = $80
COL80IDX.Cnt .EQ *-COL80IDX
COL80VAL .HS 3818012C
*--------------------------------------
LDR.MLIOL.P .DA #2
.DA #$60
.DA pbuf+1
LDR.MLISETP.P .DA #1
.DA pbuf
.DO READCAT=1
LDR.MLIRB.P .DA #3
.DA #0 unit number
.DA 0 2 byte data buffer
.DA 0 2 byte block number
.FIN
LDR.SPStatus.P .DA #$03 # of parms
LDR.SPStatus.U .DA #$00 unit number (code for smartport stat)
.DA LDR.SPStatusBuf
.DA #00 status code (0 = general status)
LDR.DEVPTRS.CNT .EQ 14
LDR.DEVPTRS.IDX .DA #$16 S3D2
.DA #$12 S1D2
.DA #$02 S1D1
.DA #$14 S2D2
.DA #$04 S2D1
.DA #$18 S4D2
.DA #$08 S4D1
.DA #$06 S3D1
.DA #$1A S5D2
.DA #$0A S5D1
.DA #$1C S6D2
.DA #$0C S6D1
.DA #$1E S7D2
.DA #$0E S7D1
*--------------------------------------
LDR.cortland .DA #0 cortland loader flag (1 = Cortland)
LDR.BootFlag .DA #0 0 = normal boot, <>0 = return
*--------------------------------------
LDR.SPStatusBuf .BS 8 8 bytes for smartport call
LDR.driveradr .BS 2
LDR.SlotIdx .BS 1
LDR.DevCnt .BS 1
LDR.SlotDevType .BS 7
LDR.SlotDevCnt .BS 7
*--------------------------------------
MAN
SAVE usr/src/prodos.fx/prodos.s.ldr
LOAD usr/src/prodos.fx/prodos.s
ASM
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