mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-22 16:31:07 +00:00
9a7d20a7e1
FORMAT: new switches & checks SH:BREAK in FOR and WHILE ASM / S-C MASM: new directives, CString support and .HX LC / UC:bugfix DHGR.DRV:bugfix LIBGUI:wip CC:wip
950 lines
24 KiB
Plaintext
950 lines
24 KiB
Plaintext
NEW
|
||
AUTO 3,1
|
||
|
||
* prodos greeting splash screen
|
||
|
||
LDR.Splash lda SPEAKER click speaker
|
||
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
|
||
cld
|
||
jsr home
|
||
|
||
ldx #$07
|
||
|
||
.1 lda LDR.MSG.AppleII,x
|
||
sta vline10+16,x
|
||
dex
|
||
bpl .1
|
||
|
||
ldx #$1D
|
||
|
||
.2 lda LDR.MSG.ProDOS,x
|
||
sta vline12+5,x
|
||
dex
|
||
bpl .2
|
||
|
||
ldx #$0B
|
||
|
||
.3 lda H202F,x
|
||
sta vline14+14,x
|
||
dex
|
||
bpl .3
|
||
|
||
ldx #$26
|
||
|
||
.4 lda LDR.MSG.Copyright,x
|
||
sta vline23,x
|
||
dex
|
||
bpl .4
|
||
|
||
ldx #$13
|
||
|
||
.5 lda LDR.MSG.Reserved,x
|
||
sta vline24+10,x
|
||
dex
|
||
bpl .5
|
||
|
||
sec
|
||
jsr idroutine returns system info
|
||
bcs .8 taken if not a //gs
|
||
|
||
lda #$80
|
||
trb newvideo video mode select
|
||
|
||
.8 lda SPEAKER click speaker
|
||
rts
|
||
|
||
* find all disk devices in system slots and set up address
|
||
* and device table in prodos global page. if there is a disk
|
||
* card in slot 2 then limit the # of devices in slot 5
|
||
* smartport to only 2
|
||
|
||
numdev2 .HS 0000000000000000 8 bytes for smartport call
|
||
driveradr .DA 0
|
||
d2idx .DA #0
|
||
diskins2 .DA #0 msb clear if drive in slot 2
|
||
|
||
devsrch stz dst
|
||
stz dst+1
|
||
stz idxl
|
||
ldx #$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 H2802
|
||
sta driveradr
|
||
lda H2802+1
|
||
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 #$07 to indicate rom present.
|
||
tax
|
||
lda sltbit,x
|
||
ora rommap mark bit to flag rom present
|
||
sta rommap slot ROM bit map
|
||
H2801 rts
|
||
|
||
H2802 .DA rwts disk ii driver
|
||
|
||
* id bytes: evens for clock, odds for disk
|
||
|
||
dskid .HS 082028005803703C
|
||
|
||
* slot bits
|
||
|
||
sltbit .HS 0002040810204080
|
||
|
||
fndtrd clc
|
||
ldy sltbit
|
||
H2818 lda (lookptr),y
|
||
and #$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.
|
||
H28E8 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 s3, d1
|
||
.DA #$1E s7, d2
|
||
.DA #$0E s7, d1
|
||
.DA #$1C s6, d2
|
||
.DA #$0C s6, d1
|
||
.DA #$1A s5, d2
|
||
.DA #$0A s5, d1
|
||
.DA #$14 s2, d2
|
||
.DA #$04 s2, d1
|
||
.DA #$12 s1, d2
|
||
.DA #$02 s1, d1
|
||
.DA #$18 s4, d2
|
||
.DA #$08 s4, d1
|
||
|
||
* 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
|
||
dey
|
||
jsr H28E8 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
|
||
|
||
* relocation subroutine. on entry, regs yx = address of parameter table
|
||
* with the following parameters:
|
||
*
|
||
* (1) command: 0 = zero destination range
|
||
* 1 = move data from src to dst
|
||
* 2 = hi addr ref tbl, relocate and move
|
||
* 3 = lo/hi addr ref tbl, relocate and move
|
||
* 4 = program, relocate and move
|
||
* >4 = end of sequence of commands
|
||
* (2) destination
|
||
* (2) length
|
||
* (2) source
|
||
* (1) # of address ranges (n) to be relocated
|
||
* (n+1) list of low page addresses to be relocated
|
||
* (n+1) list of high page addresses to be relocated
|
||
* (n+1) list of offset amounts to be added to be added
|
||
* if low and high limits have not been met
|
||
*
|
||
* on exit, carry set if error and yx = addr of error
|
||
* with acc = $00 for table error or $FF if illegal opcode
|
||
|
||
reloc stx idxl save address of control table
|
||
sty idxl+1
|
||
rloop lda (idxl) get relocation command.
|
||
cmp #$05
|
||
bcs rlend taken if >= 5 then done.
|
||
tax move destination to page 0
|
||
ldy #$01 for indirect access.
|
||
lda (idxl),y
|
||
sta dst
|
||
iny
|
||
lda (idxl),y
|
||
sta dst+1
|
||
iny
|
||
lda (idxl),y also the length (byte count)
|
||
sta cnt of the destination area.
|
||
iny
|
||
lda (idxl),y
|
||
sta cnt+1
|
||
bmi rlerr branch if >= 32k.
|
||
txa is it a request to zero destination?
|
||
beq zero if yes.
|
||
iny
|
||
lda (idxl),y get source address.
|
||
sta src used for move.
|
||
sta cde used for relocation
|
||
iny
|
||
clc
|
||
adc cnt add length to get final address
|
||
sta ecde
|
||
lda (idxl),y
|
||
sta src+1
|
||
sta cde+1
|
||
adc cnt+1
|
||
sta ecde+1
|
||
dex test for 'move' command
|
||
beq H2AA3 branch if move only (no relocation)
|
||
stx wsize save element size (1,2,3)
|
||
iny
|
||
lda (idxl),y get # of ranges that are valid
|
||
sta sgcnt relocation target addresses.
|
||
tax separate serial range groups into tbls
|
||
H2A42 iny
|
||
lda (idxl),y transfer low limits to 'limlo' table
|
||
sta limlo,x
|
||
dex
|
||
bpl H2A42
|
||
ldx sgcnt # of ranges
|
||
H2A4E iny
|
||
lda (idxl),y transfer high limits to 'limhi' table
|
||
sta limhi,x
|
||
dex
|
||
bpl H2A4E
|
||
ldx sgcnt # of ranges
|
||
H2A5A iny
|
||
lda (idxl),y transfer offsets to 'ofset' table
|
||
sta ofset,x
|
||
dex
|
||
bpl H2A5A
|
||
jsr adjtbl adj index pointer to next entry.
|
||
ldx wsize test for machine code relocation
|
||
cpx #$03
|
||
beq rlcode branch if program relocation
|
||
jsr reladr otherwise, relocate addresses in
|
||
H2A70 jsr moveSrcDst tables then move to destination.
|
||
bra rloop do next table
|
||
rlend clc
|
||
rts
|
||
rlerr jmp tblerr
|
||
rlcode jsr rlprog relocate machine code refs
|
||
bra H2A70
|
||
|
||
* fill destination range with 0's
|
||
|
||
zero jsr adjtbl adj table pointer to next entry.
|
||
lda #$00
|
||
ldy cnt+1 is it at least 1 page?
|
||
beq H2A94 branch if not.
|
||
tay
|
||
H2A89 sta (dst),y
|
||
iny
|
||
bne H2A89
|
||
inc dst+1 next page
|
||
dec cnt+1
|
||
bne H2A89 if more pages to clear.
|
||
H2A94 ldy cnt any bytes left to 0?
|
||
beq H2AA0 if not.
|
||
tay
|
||
H2A99 sta (dst),y zero out remainder
|
||
iny
|
||
cpy cnt
|
||
bcc H2A99
|
||
H2AA0 jmp rloop
|
||
H2AA3 jsr adjtbl
|
||
bra H2A70
|
||
adjtbl tya add previous table length to
|
||
sec get next entry position in table
|
||
adc idxl
|
||
sta idxl
|
||
bcc H2AB2
|
||
inc idxl+1
|
||
H2AB2 rts
|
||
moveSrcDst lda src+1 is move up, down or not at all?
|
||
cmp dst+1
|
||
bcc movup
|
||
bne movdn
|
||
lda src
|
||
cmp dst
|
||
bcc movup
|
||
bne movdn
|
||
rts no move.
|
||
movup ldy cnt+1 calc highest page to move up
|
||
tya and adj src and dst.
|
||
clc
|
||
adc src+1
|
||
sta src+1
|
||
tya
|
||
clc
|
||
adc dst+1
|
||
sta dst+1
|
||
ldy cnt move partial page 1st.
|
||
beq H2ADE taken if no partial pages
|
||
H2AD6 dey
|
||
lda (src),y
|
||
sta (dst),y
|
||
tya end of page transfer?
|
||
bne H2AD6 no
|
||
H2ADE dec dst+1
|
||
dec src+1
|
||
dec cnt+1 done with all pages?
|
||
bpl H2AD6 no
|
||
rts
|
||
movdn ldy #$00
|
||
lda cnt+1 partial page move only?
|
||
beq H2AFC taken if < 1 page to move
|
||
H2AED lda (src),y
|
||
sta (dst),y
|
||
iny
|
||
bne H2AED
|
||
inc dst+1 next page
|
||
inc src+1
|
||
dec cnt+1 more pages?
|
||
bne H2AED if more.
|
||
H2AFC lda cnt move partial page.
|
||
beq H2B09 if no more to move
|
||
H2B00 lda (src),y
|
||
sta (dst),y
|
||
iny
|
||
cpy cnt
|
||
bne H2B00
|
||
H2B09 rts
|
||
|
||
* relocate addresses
|
||
|
||
reladr ldy wsize 1 or 2 byte reference
|
||
dey
|
||
lda (cde),y
|
||
jsr adjadr relocate reference.
|
||
lda wsize update and test code pointer.
|
||
jsr adjcde
|
||
bcc reladr if more to do
|
||
rts
|
||
rlprog ldy #$00 get next opcode
|
||
lda (cde),y
|
||
jsr oplen determine if a 3 byte instruction.
|
||
beq rperr branch if not an opcode
|
||
cmp #$03
|
||
bne H2B30
|
||
ldy #$02
|
||
jsr adjadr relocate address
|
||
lda #$03
|
||
H2B30 jsr adjcde update and test if done.
|
||
bcc rlprog if more to do
|
||
rts
|
||
rperr pla
|
||
pla
|
||
ldx cde bad code address in y,x
|
||
ldy cde+1
|
||
lda #$FF indicates bad opcode
|
||
sec
|
||
rts
|
||
tblerr ldx idxl bad table address in y,x
|
||
ldy idxl+1
|
||
lda #$00 indicates input table error
|
||
sec
|
||
rts
|
||
adjadr lda (cde),y get page address and
|
||
ldx sgcnt test against limits.
|
||
H2B4D cmp limlo,x is it >= low?
|
||
bcc H2B59 if not.
|
||
cmp limhi,x is it <= high?
|
||
bcc H2B5D branch if it is
|
||
beq H2B5D
|
||
H2B59 dex try next limit set
|
||
bpl H2B4D
|
||
rts return w/o adjustment.
|
||
H2B5D clc add offset to form relocated
|
||
adc ofset,x page address and replace
|
||
sta (cde),y old address with result.
|
||
rts
|
||
adjcde clc update code pointer
|
||
adc cde
|
||
ldy cde+1
|
||
bcc H2B6C branch if not page cross
|
||
iny otherwise, update page#.
|
||
H2B6C cpy ecde+1 has all code/data been processed?
|
||
bcc H2B72 if not.
|
||
cmp ecde
|
||
H2B72 sta cde save updated values.
|
||
sty cde+1
|
||
rts return result (carry set = done).
|
||
oplen pha form index to tbl & which 2-bit group.
|
||
and #$03 low 2 bits specify group
|
||
tay
|
||
pla
|
||
lsr upper 6 bits specify byte in table
|
||
lsr
|
||
tax
|
||
lda opcodln,x
|
||
nxgroup dey is opcode len in lowest 2 bits of acc?
|
||
bmi H2B89 branch if it is
|
||
lsr shift to next group.
|
||
lsr (if length = 0 then error)
|
||
bne nxgroup
|
||
|
||
.BS $2B89-*
|
||
|
||
H2B89 and #$03
|
||
rts if z-set then error
|
||
|
||
* relocation table contains length of each opcode in 2-bit groups
|
||
|
||
opcodln .HS 0928193C0A280D3C
|
||
.HS 0B2A193F0A280D3C
|
||
.HS 0928193F0A280D3C
|
||
.HS 0928193F0A280D3C
|
||
.HS 082A113F0A2A1D0C
|
||
.HS 2A2A193F0A2A1D3F
|
||
.HS 0A2A193F0A280D3C
|
||
.HS 0A2A193F0A280D3C
|
||
|
||
wsize .HS 00
|
||
sgcnt .HS 00
|
||
limlo .HS 0000000000000000
|
||
limhi .HS 0000000000000000
|
||
ofset .HS 0000000000000000
|
||
|
||
* 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
|
||
|
||
.BS $2C80-*
|
||
|
||
RAMDRV.Install ldy #$99 move $9A bytesfrom lcsrc to lcdest.
|
||
|
||
.1 lda RAM,y transfer main bank portion of driver
|
||
sta RAMDRV,y
|
||
dey
|
||
cpy #$FF
|
||
bne .1
|
||
|
||
ldx #RAMX set up to move aux portion of driver
|
||
stx A1L
|
||
dex
|
||
stx A2L
|
||
ldx /RAMX
|
||
stx A1L+1
|
||
inx
|
||
stx A2L+1
|
||
lda #RAMXDRV
|
||
sta A4L
|
||
lda /RAMXDRV RAMX to RAMXDRV
|
||
sta A4L+1
|
||
sec irection = to aux bank.
|
||
jsr auxmove move aux bank portion of driver.
|
||
|
||
lda #RAMDRV put driver address into
|
||
sta drivertbl2+6 slot 3, drive 2.
|
||
lda /RAMDRV
|
||
sta drivertbl2+7
|
||
|
||
inc numdevs count (-1) active devices
|
||
ldx numdevs
|
||
lda #$BF unit num of /RAM
|
||
sta devlist,x
|
||
rts end of obj ram_1
|
||
|
||
RAM_1_END .EQ * end of /RAM installer
|
||
.BS $2D00-* pad 0's to page boundary
|
||
|
||
|
||
MAN
|
||
SAVE usr/src/prodos.203/prodos.s.ldr.b
|
||
LOAD usr/src/prodos.203/prodos.s
|
||
ASM
|