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A2osX/ProDOS.FX/ProDOS.S.LDR.txt
Rémy GIBERT 2cbb13cb00 Kernel 0.94
2020-04-13 19:04:02 +02:00

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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.0 .AT "PRODOS FX:"
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 "Clk"
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 setnorm
jsr init
jsr setvid
jsr setkbd
jsr home
lda #$20
ldx #39
.1 sta $400,x
dex
bpl .1
ldx #LDR.MSG.0
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 $FBB3 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 $FBC0 //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 $FE1F //gs ????
bcs m128k no.....
inc LDR.cortland
ldx #LDR.MSG.IIGS
lda #MACHID.T.IIe+MACHID.M.128+MACHID.COL80+MACHID.CLK
bra m128k
LDR.UNSUPP.HW ldx #LDR.MSG.UNSUPP
jsr LDR.PrintX
bra *
*--------------------------------------
m128k sta idapple Save MACHID in temp location
sta SETALTCHAR
jsr LDR.PrintX
sta CLRC3ROM
ldx #$F
.2 lda LDR.3F0,x
sta $3F0,x
dex
bpl .2
lda #$01 patch for the gs rom
trb statereg to force off intcxrom
ldx #PAKME.ILDR-PAKME.Table
ldy #ILDR.START
lda /ILDR.START
jsr X.Unpak.XatYA
ldx #PAKME.GP-PAKME.Table
ldy #MLI
lda /MLI
jsr X.Unpak.XatYA
jsr lc1in switch in language card bank 1.
ldx #PAKME.XRW-PAKME.Table
ldy #$D000
lda /$D000
jsr X.Unpak.XatYA
ldx #0
.1
* stz $D700,x
stz fcbbuf,x
stz vcbbuf,x
* stz $DA00,x
* stz $DB00,x
* stz $DC00,x
* stz $DD00,x
inx
bne .1
ldx #PAKME.XDOS-PAKME.Table
ldy #$DE00
lda /$DE00
jsr X.Unpak.XatYA
ldx #XDOS.DATA.LEN0
.3 stz XDOS.DATA-1,x
dex
bne .3
ldx #PAKME.IRQ-PAKME.Table
ldy #$FF9B
lda /$FF9B
jsr X.Unpak.XatYA
LDR.IRQ lda RROMWRAMBNK2
ldy irqv interrupt vector
ldx irqv+1 x = high byte
jsr lc1in set language card bank 1 to r/w
sta SETALTZP
stx irqv+1 interrupt vector
sty irqv save irq vector in aux lc
sta CLRALTZP
stx irqv+1 save irq vector in main lc
sty irqv
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 lc1in set language card bank 1 to r/w
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
>DEBUGOA
*--------------------------------------
lda LDR.BootFlag get setup entry point flag
beq LDR.ReadRoot taken if normal boot.
lda 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
jmp lc1in switch in LC bank 1
*--------------------------------------
DS1216E.DATA1 .EQ idxl
DS1216E.DATA2 .EQ A1L
*--------------------------------------
LDR.ClkDevScan php
sei
lda $CFFF
pha
sta $C300
ldx #7
.1 ldy #8
.2 lda $C304
lsr
ror DS1216E.DATA1,x
dey
bne .2
dex
bpl .1
lda $C304 Reset DS1216E comparison register with READ A2=1
ldx #7 Read 8 bytes...
.3 lda DS1216E.SIG,x
phx
ldx #8 ....of 8 bits
.4 ldy #0
lsr
bcc .5
iny
.5 pha
lda $C300,y Write Pattern bit in A0, with A2=0
pla
dex
bne .4
plx
dex
bpl .3
ldx #7
.6 ldy #8
.7 lda $C304
lsr
ror DS1216E.DATA2,x
dey
bne .7
dex
bpl .6
pla
bmi .8
sta $CFFF
.8 plp
ldx #7
.9 lda DS1216E.DATA1,x
cmp DS1216E.DATA2,x
bne .90
dex
bpl .9
bra LDR.ClkDevTCLK
.90 lda #'N'
ldx PAKME.NCLK
ldy PAKME.NCLK+1
bra LDR.SetupCLK
*--------------------------------------
LDR.ClkDevTCLK lda CLRC8ROM switch out $C8 ROMs
stz idxl
lda #$C1
sta idxl+1
.1 ldy #6
.2 lda (idxl),y compare id bytes
cmp dskid,y
bne .3
dey
dey
bpl .2
lda #'T'
ldx PAKME.TCLK
ldy PAKME.TCLK+1
jsr LDR.SetupCLK
lda idxl+1
sta TCLK.Cx1+2
sta TCLK.Cx2+2
rts
.3 inc idxl+1
lda idxl+1
cmp #$C8
bne .1
rts
*--------------------------------------
LDR.SetupCLK stx ZPInBufPtr
sty ZPInBufPtr+1
jsr LDR.PrintA
ldx #LDR.MSG.CLK
jsr LDR.PrintX
lda #$D742
sta ZPOutBufPtr
lda /$D742
sta ZPOutBufPtr+1
jsr X.Unpak
lda #$4C enable clock routine by putting a jmp
sta clockv in front of clock vector
lda #MACHID.CLK
tsb MACHID
LDR.SetupCLK.RTS
rts
*--------------------------------------
LDR.SetupRAM lda DEVCNT
cmp #13
bcs LDR.SetupCLK.RTS
jsr lc1in
ldx #PAKME.RAM-PAKME.Table
ldy #$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 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 = $ff)
bne .2 branch if 16 sector disk II.
sta devid =0 since disk ii's have null attributes
lda #RWTS
sta LDR.driveradr
lda /RWTS
sta LDR.driveradr+1
sec 2 devices
jsr LDR.AddBlkDevs
bra .7
.2 cmp #$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 $CnFF
lda (idxl),y
sta LDR.driveradr
lda idxl+1 store hi entry addr (low already done)
sta LDR.driveradr+1
cpx #2 CS if 2 devs or more
jsr LDR.AddBlkDevs install 1 or 2 devices from this slot.
.7 ldx LDR.SlotIdx
lda sltbit-1,x
tsb rommap mark bit to flag rom present
.8 dec idxl+1 next lower slot.
dec LDR.SlotIdx have all slots been checked ?
bne .1
*--------------------------------------
LDR.AddExtraDevs
* stz idxl
lda #$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 lc1in write enable LC ram bank 1.
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
lda 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 device = 2 for SCSI
LDR.SPStatusCall.U
LDR.SPVect jsr $0000 self modifying
.HS 00
.DA LDR.SPStatus.P
rts
*--------------------------------------
LDR.CheckDiskID lda CLRC8ROM switch out $C8 ROMs
ldy #$05
.1 lda (idxl),y compare id bytes
cmp dskid,y
sec set if no disk card
bne .2
dey
dey
bpl .1 loop until all 4 id bytes match.
clc clear if disk card
.2 rts
*--------------------------------------
LDR.SetDevID ldy #$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.PrintA ldy LDR.Print.CX
and #$7F
cmp #$60
bcs .2
and #$3F
.2 sta $400,y
inc LDR.Print.CX
rts
*--------------------------------------
LDR.PrintX ldy LDR.Print.CX
.1 lda $2000,x
pha
and #$7F
cmp #$60
bcs .2
and #$3F
.2 sta $400,y
inx
iny
pla
bpl .1
* lda #$20
* sta $400,y
iny Add a Space
sty LDR.Print.CX
rts
*--------------------------------------
* 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
lc1in lda RRAMWRAMBNK1
lda RRAMWRAMBNK1
rts
*--------------------------------------
* 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
*--------------------------------------
DS1216E.SIG .HS 5CA33AC55CA33AC5 Reverted 7->0
*--------------------------------------
* id bytes: evens for clock, odds for disk
dskid .HS 082028005803703C
sltbit .HS 02040810204080
*--------------------------------------
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 #$06 S3D1
.DA #$1E S7D2
.DA #$0E S7D1
.DA #$1C S6D2
.DA #$0C S6D1
.DA #$1A S5D2
.DA #$0A S5D1
.DA #$14 S2D2
.DA #$04 S2D1
.DA #$12 S1D2
.DA #$02 S1D1
.DA #$18 S4D2
.DA #$08 S4D1
*--------------------------------------
LDR.Print.CX .DA #0
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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