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A2osX/ProDOS.FX/ProDOS.S.LDR.A.txt
Rémy GIBERT a5bcf762ff Kernel 0.93+
2019-10-31 07:54:28 +01:00

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NEW
AUTO 3,1
H2000 jmp prostart
jmp atalkset appletalk setup for network boot
jmp p16start GQuit setup for gs/os
LDR.MSG.16 .AS -"Apple II"
LDR.MSG.12 .AS -"ProDOS 8 V2.0.3 06-May-93"
LDR.MSG.14 .AS -"A2osX Custom"
LDR.MSG.23 .AS -"Copyright Apple Computer, Inc., 1983-93"
LDR.MSG.10 .AS -"All Rights Reserved."
p16start inc setuprts set = 2 for GQuit rts
atalkset inc setuprts set = 1 for appletalk rts
prostart lda unitnum
sta LDR.MLIONLINE.P+1
jsr LDR.Splash
* test for at least a 65c02
sed
lda #$99 a negative #
clc
adc #$01 +1 in decimal = 0 (positive)
cld
bmi m48k if 6502 because will not clear N flag
lda #$01 patch for the gs rom
trb statereg to force off intcxrom
ldx #H232B yx=232B location table
ldy /H232B
jsr reloc move interpreter loader to $800
bcs m48k error
* test for at least 64k
ldy #$00
lda #$FF
sta kversion at least 48k ?
eor kversion
sec
bne m48k if not.
sta kversion try again to be sure
lda kversion
bne m48k still not.
lda RROMBNK2 read ROM
jsr whchrom get preliminary system config
bcs m48k machine too small
lda idapple
and #$20
bne m64k if at least 64k //+.
m48k jmp H22EB need enhanced IIe
* we have 64k, now determine model: //e , iic, or Cortland (//gs)
m64k ldx #H2367 yx=2367 relocation table
ldy /H2367
jsr reloc
lda kversion
sta xdosver save current version for dir use
H20CE bcc H20D3
jmp relocerr
H20D3 lda RROMBNK2 read ROM
ldx version ROM id byte
cpx #$06
bne H211D then it's a //e
lda #$E0
bit zidbyte another ROM id byte
php
lda idapple
and #$37
plp
bvc set3 if //c or //x
bmi set7 if //e
set3 php
ora #$08
plp
bpl mach2 if //c
ora #$40
bpl H20FD always taken.
mach2 inc cflag //c or later
bvs H20FD
set7 ora #$80
H20FD sta idapple
lda RROMBNK2 read ROM
sec
jsr idroutine returns system info
bcs H211D branch if // family
inc cortland it's a Cortland, set loader flag
stz vmode force setvid to reset cursor
jsr setvid reset output to screen
lda setuprts
bne H211D 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
* put dispatcher in bank 2 of language card
H211D lda LDR.MLIONLINE.P+1 place boot devnum in globals
sta LDR.MLIREADBLOCK.P+1
sta devnum last device used
jsr devsrch finish setting up globals
lda LDR.MLIREADBLOCK.P+1
sta devnum
jsr lc1in switch in language card bank 1.
ldx #rlclk64 set up clock
ldy /rlclk64
jsr reloc
H2139 bcs H20CE
lda #calldisp
sta jspare+1 P8 system death vector
lda /calldisp
sta jspare+2
lda RRAMWRAMBNK2 read/write RAM bank 2
lda RRAMWRAMBNK2
ldx #altdsptbl GQuit dispatcher
ldy /altdsptbl
lda setuprts
cmp #$02 is this a GQuit setup?
beq H216E taken to use GQuit dispatcher.
ldx #newquitbl else, use Bird's Better Bye
ldy /newquitbl if correct machine.
lda machid machine ID byte
bit #$00 //c ?
bne H216E if yes, can use.
and #$C2
cmp #$82 //e with 80 col card ?
beq H216E if yes, can use.
ldx #dsp64 else, use original quit code
ldy /dsp64
inc newquitflag using old quit code so set flag
H216E jsr reloc
lda #$EE byte to distinguish LC bank 2
sta $D000
jsr lc1in switch in LC bank 1
bcs H2139
* test for 128k needed to install ram disk
lda machid machine ID byte
and #$30
eor #$30
bne noramdsk if < 128k
ldx #$FF
php save interrupt status
pla in acc.
sei no interrupts.
sta SETALTZP use alt zero page/stack
stx auxsp init aux sp to $FF
sta CLRALTZP use main zero page/stack
pha restore interrupt status
plp
sta CLRC3ROM enable internal slot 3 ROM
jsr RAMDRV.Install
* check interrupt vector to determine ROM version
noramdsk lda RROMWRAMBNK2 read ROM/write RAM bank 2
ldy irqv interrupt vector
ldx irqv+1 x = high byte
jsr lc1in set language card bank 1 to r/w
cpx #$D0 is it > $D000 (old roms)
* lda #$00 was for setting removed IRQFLAG
bcc .1
jmp H22EB need enhanced Roms
.1 sta SETALTZP use alt zero page/stack
lda #$FF set aux sp = $FF
sta auxsp
stx irqv+1 interrupt vector
sty irqv save irq vector in aux lc
sta CLRALTZP use main zero page/stack
stx irqv+1 save irq vector in main lc
sty irqv
* lda #$01 was for setting removed IRQFLAG
stz cortflag assume not Cortland system
lda cortland running on a Cortland ?
beq H21D5 branch if not.
inc cortflag yes it's Cortland
bra docard
* check for a rom in slot 3. if no rom, use internal $C300 firmware
H21D5 sta CLRC3ROM enable internal slot 3 ROM
lda rommap slot ROM bit map
and #$08 mask all but slot 3
bne isromin3 taken if rom in slot 3
bra H2247 else continue booting
* found a rom in slot 3. is it an external, identifiable 80 col card
* with interrupt routines? if so, enable it else use internal $C300 firmware.
isromin3 sta SETC3ROM enable slot 3 rom
lda $C305 check card id bytes
cmp #$38
bne hitswtch not terminal card
lda $C307
cmp #$18
bne hitswtch
lda $C30B
cmp #$01
bne hitswtch
lda $C30C is it an apple 80 col compatible card?
and #$F0
cmp #$80
bne hitswtch if not.
lda machid machine ID byte
and #$C8
cmp #$C0 is it a //+ ?
beq docard yes
lda $C3FA
cmp #$2C does card have an interrupt handler?
beq docard yes
hitswtch sta CLRC3ROM enable internal $C300 firmware
* verify that the card in aux slot is actually present
sta SET80STORE enable 80-col store
sta SETPAGE2 switch in text page 2
lda #$EE
sta txtp2
asl
asl txtp2
cmp txtp2
bne H2230
lsr
lsr txtp2
cmp txtp2
H2230 sta CLRPAGE2 main memory
sta CLR80STORE disable 80-col store
beq docard branch if card is there
lda machid machine ID byte
and #$FD clear 80-col bit 2 (no card)
bne H2244 always
docard lda machid
ora #$02 turn bit 2 on (80-col card is present)
H2244 sta machid
H2247 lda cortland are we running on a //gs ?
beq H225D if not.
lda #$4C enable clock routine by putting a jmp
sta clockv in front of clock vector
ldx #cortclock yx = relocation table
ldy /cortclock for cortland clock driver
jsr reloc
lda #$01 set bit 0 = clock present
tsb machid
H225D lda setuprts get setup entry point flag
beq H2267 taken if normal boot.
lda RROMBNK2 read ROM
rts return to caller at setup entry point.
setuprts .DA #$00 0 = normal boot, <>0 = return
* set prefix to boot device
H2267 jsr MLI
.DA #MLIONLINE
.DA LDR.MLIONLINE.P
bcs relocerr
lda pbuf+1 get volume name length.
and #$0F strip devnum
beq relocerr
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.MLISETPREFIX.P
bcs relocerr
tax =0
stx dst
ldy #$02 read directory into buffer
lda /DirBlkBuf
H228E sta dst+1
sta LDR.MLIREADBLOCK.P+3
sty LDR.MLIREADBLOCK.P+4
stx LDR.MLIREADBLOCK.P+5
jsr MLI
.DA #MLIREADBLOCK
.DA LDR.MLIREADBLOCK.P
bcs relocerr
ldy #$03 get next block# from link
lda (dst),y
tax
dey
ora (dst),y if both bytes are the same
beq H22B7 then no more blocks of directory.
lda (dst),y
tay
lda dst+1
clc
adc #$02 add $200 to buffer pointer
cmp /dbuf+$800 until it points past end of buffer.
bcc H228E if ok, read next block.
H22B7 jmp $800 jmp to "load interpreter" code
* relocation/configuration error
relocerr sta RROMBNK2 read ROM
jsr home
ldy #$1D
.1 lda LDR.MSG.LdrErr,y
sta vline12+4,y
dey
bpl .1
bmi *
LDR.MSG.LdrErr .AS -"Relocation/Configuration Error"
H22EB ldy #$23
.1 lda LDR.MSG.EnhErr,y
sta vline14+2,y
dey
bpl .1
bmi *
LDR.MSG.EnhErr .AS -"REQUIRES ENHANCED APPLE IIE OR LATER"
LDR.MLIONLINE.P .DA #2
.DA #$60
.DA pbuf+1
LDR.MLISETPREFIX.P
.DA #1
.DA pbuf
LDR.MLIREADBLOCK.P
.DA #3
.DA #0 unit number
.DA 0 2 byte data buffer
.DA 0 2 byte block number
cortland .BS 1 cortland loader flag (1 = Cortland)
newquitflag .BS 1 1 = old quit code
H232B .DA #1 move interpreter loader code
.DA $800 destination address
.DA licode.end-licode length to move
.DA LOADINT source address
.DA #$01 move $3F0 vectors
.DA p3vect destination
.DA $0010 16 bytes to move
.DA H257B source
.DA #$01
.DA lookptr destination address
.DA $0002 length to move
.DA dst source
.DA #$01 move 128k test to zero page
.DA tst128 destination
.DA LDR.Test128.Len length to move
.DA LDR.Test128 source
.HS FF done
dsp64 .DA #$01 move p8 dispatcher code
.DA displc2 destination
.DA $0300 length (must be <= 3 pages)
.DA SEL0 source
.HS FF done
newquitbl .DA #$01 move Bird's Bye code
.DA displc2 dest
.DA $0300 length (must be <= 3 pages)
.DA SEL1 source
.HS FF done
altdsptbl .DA #$01 move GQuit launcher
.DA displc2 destination
.DA $0300 length (must be <= 3 pages)
.DA SEL2 source
.DA #$01 move a copy of GQuit launcher
.DA dispadr to dispadr for gsos
.DA $0300 length (must be <= 3 pages)
.DA SEL2 source
.HS FF done
* tables for moving 64k version of mli for execution
H2367 .DA #$01 relocation table. 1=move src to dst
.DA $ff9b destination
.DA $100-$9B length to move
.DA IRQ source
.DA #$01
.DA MLI dst
.DA $0100 in one page
.DA GP src
.HS 00 0=clear buffers $D700-$DDFF
.DA $D700 start
.DA $0700 len
.DA #$01
.DA $DE00 dst
.DA $2100 length of mli
.DA XDOS src
.DA #$01
.DA $D000
.DA $0700 length of disk ii driver
.DA XRW
.HS FF done
* move thunderclock
rlclk64 .DA #$01 relocation table. 1=move src to dst
.DA $D742 destination
.DA TCLK.END-TCLK.START length of thunderclock driver
.DA TCLK source
.DA #$04 4=relocate and move program
.DA TCLK.START
.DA TCLK.CEND-TCLK.START
.DA TCLK.START
.HS 00
.HS C1C1
clock64 .DA #$00
.HS FF done
* move cortland clock
cortclock .DA #$01 relocation table. 1=move src to dst
.DA $D742 destination
.DA CCLK.END-CCLK.START length of cortland clock driver
.DA CCLK source
.HS FF done
* 16 bytes moved to $03F0 vectors
H257B .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 read/write language card RAM bank 1
lda RRAMWRAMBNK1
rts
* determine which system model and save in machine id (idapple)
whchrom stz idapple assume standard apple //
ldx version check hardware id
cpx #$38 is it apple // (autostart rom)?
beq H25BE if yes
lda #$80
cpx #$06 apple //e?
beq H25BC if yes
lda #$40
cpx #$EA apple //+?
bne H25B6 it not, then machine is unknown.
ldx $FB1E apple /// in emulation?
cpx #$AD
beq H25BC taken if apple //+.
lda #$D0 test again for apple /// emulation
cpx #$8A because will only have 48k memory.
bne H25B6 if taken, then machine is unknown.
H25B4 sec apple /// emulation is not allowed
rts because insufficient memory.
H25B6 lda #$02 machine unknown
sta (dst),y
bne H25D9 always.
H25BC sta idapple save machine id
* check for language card ram
H25BE jsr lc1in switch in language card bank 1
lda #$AA
sta $D000
eor $D000 if LC present, result = 0.
bne H25B4 othewise, insufficient memory.
lsr $D000 check lc again
lda #$55
eor $D000
bne H25B4 not sufficent memory.
lda #$20 LC ram is available
ora idapple
H25D9 jmp tst128 jumps to page 0 routine below
* test for 128k. use page 0 for this routine
LDR.Test128 sta idapple H25DC-2621 was moved to location tst128
bpl not128 if already determined < 128k
lda #$EE
sta SETWRITEAUX write to aux mem while on main zp
sta SETREADAUX and read aux mem.
sta dbuf write these locs just to test aux mem
sta $800 1k apart from each other.
lda dbuf
cmp #$EE
bne noaux
asl dbuf may be sparse mem mapping so
asl change value and see what happens.
cmp dbuf
bne noaux branch if not sparse mapping.
cmp $800
bne H2606 if not sparse.
noaux sec no aux memory available.
bcs H2607
H2606 clc
H2607 sta CLRWRITEAUX switch back to main memory
sta CLRREADAUX
bcs not128 if < 128k
lda idapple
ora #$30 set id = 128k present
sta idapple
not128 lda lookptr+1
sec
sbc #$05
sta lookptr+1
bcs H2620
dec lookptr
H2620 clc
rts
LDR.Test128.len .EQ *-LDR.Test128
*--------------------------------------
LDR.Splash cld
sta CLR80DISP disable 80 col hardware
sta CLR80STORE disable 80 col store
jsr setnorm set normal text mode
jsr init init text screen
jsr setvid reset output to screen
jsr setkbd reset input to keyboard
jsr home
ldx #$07
.1 lda LDR.MSG.16,x
sta vline10+16,x
dex
bpl .1
ldx #$1D
.2 lda LDR.MSG.12,x
sta vline12+5,x
dex
bpl .2
ldx #$0B
.3 lda LDR.MSG.14,x
sta vline14+14,x
dex
bpl .3
ldx #$26
.4 lda LDR.MSG.23,x
sta vline23,x
dex
bpl .4
ldx #$13
.5 lda LDR.MSG.10,x
sta vline24+10,x
dex
bpl .5
sec
jsr idroutine returns system info
bcs .8 taken if not a //gs
lda #$80
trb newvideo video mode select
.8 bit $C000
bpl .8
sta $C010
rts
*--------------------------------------
* find all disk devices in system slots and set up address
* and device table in prodos global page. if there is a disk
* card in slot 2 then limit the # of devices in slot 5
* smartport to only 2
*--------------------------------------
numdev2 .HS 0000000000000000 8 bytes for smartport call
driveradr .DA 0
d2idx .DA #0
diskins2 .DA #0 msb clear if drive in slot 2
devsrch stz dst
stz dst+1
stz idxl
ldx #$FF init to no active devices.
stx numdevs count (-1) active devices.
lda #$0E start disk // area at end of devlist.
sta d2idx
* check slot 2. if there is a disk card then clear the msb of diskins2. this
* will limit the # of devices in any slot 5 spartport card to 2.
lda #$C2
sta idxl+1 check slot 2
jsr cmpid is there a disk in slot 2 ?
ror diskins2 if so, clear msb else set it.
lda #$C7 search slots from high to low
sta idxl+1
H26AB jsr cmpid
bcs H270C if no ProDOS device in this slot.
lda (idxl),y check last byte of $Cn rom (y = $ff)
beq diskii branch if 16 sector disk II.
cmp #$FF if = $FF then 13 sector disk II.
bcs H270C ignore if 13 sector boot ROM
sta driveradr else assume it's an intelligent disk.
ldy #$07 check for a smartport device.
lda (idxl),y
bne H26C4 no smartport
jmp smartprt
H26C4 ldy #$FE
lda (idxl),y get attributes.
and #$03 verify it provides read and status calls.
cmp #$03
sec assume it's an off-brand disk
bne H270C
jsr setdevid set up the devid byte from attributes
clc
php remember that it's not a disk //.
lsr move # of units (0=1, 1=2) to carry.
lda idxl+1 store hi entry addr (low already done)
bne H26E6 branch always.
diskii sta devid =0 since disk ii's have null attributes
sec
php remember it's a disk //
lda #RWTS
sta driveradr
lda /RWTS
H26E6 sta driveradr+1
jsr installdev install 1 or 2 devices from this slot.
plp get back if it's a disk // (carry).
bcc nxtdsk2 if not disk //.
dex move the list pointer back by 2 devices
dex
stx numdevs count (-1) active devices
dec d2idx increase the disk two index
dec d2idx
ldy d2idx
inx adj since device count starts with $FF.
lda devlist+1,x get entries for disk //
sta devlist,y move then toward the end of the list
lda devlist,x
sta devlist+1,y
dex back to numdevs again
nxtdsk2 clc
H270C jsr sltrom test for ROM in given slot and set flags
dec idxl+1 next lower slot.
lda idxl+1
and #$07 have all slots been checked ?
bne H26AB no.
* perform the new device search, mapping unmounted smartport devices
* to empty slots in the device table.
jsr newmount
* now copy the disk // list to the end of the regular list.
* start by making the device count include disk //'s
ldx numdevs current device count - 1
lda #$0E
sec
sbc d2idx
beq H2747 if there were no disk //'s then done.
clc
adc numdevs sum of disk //'s and others.
sta numdevs
inx move to open space in regular list.
ldy #$0D first disk // entry.
H272F lda devlist,y
pha
lda devlist,x
sta devlist,y
pla
sta devlist,x
inx
dey
sty d2idx use as a temp
cpx d2idx
bcc H272F continue until indexes cross
H2747 ldy #$00
ldx numdevs now change the device order so that
H274C lda devlist,x the boot device will have highest
pha priority.
and #$7F strip off high bit
eor devnum for comparison.
asl
bne H275A
pla
iny
H275A dex
bpl H274C
ldx numdevs now reverse order of search, hi to lo.
tya was boot device found ?
beq H2777
lda devnum make boot device 1st in search order.
sta devlist,x
dex
bmi H277E branch if only one device.
dey is this a 2 drive device ?
beq H2777 branch if not.
eor #$80 make boot device, drive 2 next.
sta devlist,x
dex
bmi H277E branch if only 1 device, 2 drives.
H2777 pla
sta devlist,x
dex
bpl H2777
H277E jsr fndtrd save accumulated machine id.
beq H2787
sta machid machine ID byte
rts
H2787 jmp H25B6
stadrv ora devid combine with attributes.
ldx numdevs
inx put device # into device list.
sta devlist,x
asl now form drive 2 device number, if any.
rts
sltrom bcc H27F3 branch if disk drive
* test for clock card
ldy #$06
H2799 lda (idxl),y
cmp dskid,y
bne H27BA no clock
dey
dey
bpl H2799
lda idxl+1 transfer hi slot address
sbc #$C1 minus $C1 (default) to relocate
sta clock64 references to clock rom.
lda #$4C enable jump vector in globals.
sta clockv P8 clock vector.
lda idapple mark clock as present.
beq H277E
ora #$01
sta idapple xxxxxxx1 = clock present.
bne H27F3 always taken.
* test for 80 col card
H27BA ldy #$05
lda (idxl),y
cmp #$38
bne H27E4
ldy #$07
lda (idxl),y
cmp #$18
bne H27E4
ldy #$0B
lda (idxl),y
dec must = 1
bne H27E4
iny
lda (idxl),y
and #$F0 mask off low nibble.
cmp #$80 generic for 80-col card.
bne H27E4
lda idapple
beq H277E
ora #$02
sta idapple xxxxxx1x = 80 col card.
bne H27F3 always taken.
* test for any other rom
H27E4 ldx #$00
lda (idxl)
cmp #$FF apple /// non-slot?
beq H2801 invalid rom
H27EC cmp (idxl) look for floating bus
bne H2801 no rom
inx
bne H27EC
H27F3 lda idxl+1 mark a bit in slot byte
and #$07 to indicate rom present.
tax
lda sltbit,x
ora rommap mark bit to flag rom present
sta rommap slot ROM bit map
H2801 rts
* id bytes: evens for clock, odds for disk
dskid .HS 082028005803703C
* slot bits
sltbit .HS 0002040810204080
fndtrd clc
ldy sltbit
H2818 lda (lookptr),y
and #$DF
adc sltbit
sta sltbit
rol sltbit
iny
cpy sltbit+3
bne H2818
tya
asl
asl
asl
asl
tay
eor sltbit
adc #$0B
bne H283B
lda idapple
rts
H283B lda #$00
rts
installdev 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.
jsr stadrv OR in low nibble, store in dev list.
plp restore # of devices in carry.
ror if 2 drives, then bit 7=1.
bpl H2853 branch if a 1 drive device (e.g. hard drive)
inx else presume that 2nd drive is present.
sta devlist,x active device list.
H2853 stx numdevs save updated device count.
asl shift # of drives back into carry.
lda driveradr get high address of device driver.
sta drivertbl1,y device driver table 1.
bcc H2862 branch if single drive.
sta drivertbl2,y device driver table 2.
H2862 lda driveradr+1
sta drivertbl1+1,y
bcc H286D
sta drivertbl2+1,y
H286D rts
* query smartport status to determine # of devices
* and install up to 4 units in table if card is in slot 5
* otherwise only 2 units. this includes a patch #74
smartprt jsr setdevid setup the devid byte from attributes
lda idxl+1
sta driveradr+1
lda driveradr
sta pscall+1 modify operand
clc
adc #$03
sta spvect+1
lda driveradr+1
sta spvect+2
sta pscall+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
stz bloknml # of bytes to transfer
stz bloknml+1
lda #$10
sta buf+1 dummy pointer should be <> 0
* do a prodos status call patched in from above
pscall jsr $0000 self modifying code
ldy #$FB
lda (idxl),y check device id
and #$02 SCSI?
beq H28B1 no, no need to init Cocoon
sta statunit device = 2 for SCSI
* initialize SCSI Cocoon to build internal device tables
* and report true # of devices attached
jsr spvect status of Cocoon
.HS 00
.DA spcparms ignore any errors.
H28B1 stz statunit set unit# = 0
jsr spvect call to get the device count.
.HS 00 this is a status call
.DA spcparms
lda numdev2
beq donesp no devices, so done.
cmp #$02 carry set if 2,3,4
jsr installdev do the 1st and 2nd device if exists.
lda idxl+1
cmp #$C5
bne donesp if not slot 5
* for slot 5, if there is a disk card in slot 2
* then only install 2 devices otherwise map
* extra devices as slot 2
bit diskins2 disk in slot 2 ?
bpl donesp yes - so done
lda numdev2
cmp #$03 carry set if 3,4,...
bcc donesp
cmp #$04 carry set if 4,5,6,...
lda #$C2 map extra devices as slot 2
sta idxl+1
jsr installdev
lda #$C5
sta idxl+1
donesp jmp nxtdsk2 it's a disk device.
setdevid ldy #$FE check attributes byte.
lda (idxl),y
lsr move hi nibble to lo nibble for
lsr device table entries.
lsr
lsr
sta devid
rts
* check unknown card to see if disk id = $Cn00:nn 20 nn 00 nn 03
cmpid lda CLRC8ROM switch out $C8 ROMs
ldy #$05
H28F6 lda (idxl),y compare id bytes
cmp dskid,y
sec set if no disk card
bne H2903
dey
dey
bpl H28F6 loop until all 4 id bytes match.
clc clear if disk card
H2903 rts
* smartport call parameters
spcparms .DA #$03 # of parms
statunit .DA #$00 unit number (code for smartport stat)
.DA numdev2
.DA #00 status code (0 = general status)
* indexes into driver table
driveridx .DA #$06
.DA #$1E
.DA #$0E
.DA #$1C
.DA #$0C
.DA #$1A
.DA #$0A
.DA #$14
.DA #$04
.DA #$12
.DA #$02
.DA #$18
.DA #$08
* self modifying jmp = smartport entry address
spvect jmp $0000 self modifying
newmount stz idxl
lda #$C7 start with slot 7 ($C700)
sta idxl+1
H291F jsr H29EB is there a smartport device here?
bcs H2974 no, next device.
ldy #$FF get smartport address.
lda (idxl),y
clc
adc #$03 add 3 for smartport call
sta spvect+1
lda idxl+1
sta spvect+2
jsr setdevid set up device attributes
stz statunit
jsr spvect do a status call on smartport itself
.HS 00
.DA spcparms
lda numdev2 # of devices on smartport
cmp #$03
bcc H2974 only 2 devices,skip to next one.
inc add 1 for comparisons.
sta driveradr # of devices + 1.
lda #$03 start at unit #3 (non-slot 5)
ldx spvect+2
cpx #$C5 is this slot 5?
bne H295B no, start at 3.
bit diskins2 disk controller in slot 2?
bpl H295B yes, so allow remapping of s5 devices
lda #$05 else start looking at unit #5
* find block devices on this smartport
H295B cmp driveradr have we done all units in this slot?
bcs H2974 yes, skip to next slot.
sta statunit store the unit#.
jsr spvect do status call
.HS 00
.DA spcparms
lda numdev2 is this a block device?
bmi mount yes, so mount it.
H296E lda statunit go check the next unit#
inc
bra H295B
H2974 dec idxl+1
lda idxl+1
cmp #$C0 searched down to slot 0?
bne H291F if not.
rts
mount ldx #$0C
H297F ldy driveridx,x
lda drivertbl1,y device driver table 1
cmp #nodevice
bne H2990
lda drivertbl1+1,y
cmp /nodevice
beq H2994
H2990 dex
bpl H297F
rts ran out of space for devices, exit.
* empty slot found
H2994 lda idxl+1
pha
phx
phy
tya which slot is empty?
lsr shift into slot#
and #$07 now 1-7
ora #$C0 now $C1-$C7
sta idxl+1
jsr H29EB smartport interface in this slot?
ply
plx
pla
sta idxl+1
bcc H2990 yes, can't use to mirror the device.
jsr lc1in write enable LC ram bank 1.
tya divide index by 2
lsr
tax
lda statunit
sta spunit-1,x store the smartport unit #
lda spvect+1 and entry address.
sta spvectlo-1,x
lda spvect+2
sta spvecthi-1,x
lda RROMBNK2 write protect lc ram.
inc numdevs
ldx numdevs
tya
lsr
cmp #$08
bcc nodev2 drive 2 mount
sbc #$08
ora #$08
nodev2 asl
asl
asl
asl
ora devid include device attributes
sta devlist,x in the active device list.
lda #remap_sp
sta drivertbl1,y device driver table 1
lda /remap_sp
sta drivertbl1+1,y
bra H296E
H29EB jsr cmpid is it a disk controller?
bcs H29F8 no, so return.
sec assume no smartport
ldy #$07
lda (idxl),y is it a smartport?
bne H29F8 if not.
clc smartport found
H29F8 rts
*--------------------------------------
MAN
SAVE USR/SRC/PRODOS.FX/PRODOS.S.LDR.A
LOAD USR/SRC/PRODOS.FX/PRODOS.S
ASM
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