A2osX/ProDOS.FX/ProDOS.S.GP.txt

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NEW
AUTO 3,1
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*--------------------------------------
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GP.START jmp GP.MLIENTRY $2E00-2EFF moved to $BF00
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jspare jmp * will be changed to point to dispatcher.
clockv rts changed to jmp ($4C) if clock present.
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.DA XDOS.ClockDrv clock routine entry address.
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GP.P8errv jmp XDOS.syserr error reporting hook.
sysdeath jmp sysdeath1 system failure hook.
p8error .DA #0
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
.DA nodevice
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.DA nodevice
.DA nodevice
.DA #0 DEVNUM
.DA #$ff DEVCNT : count (-1) active devices
.HS 00000000000000 DEVLST : up to 14 units may be active
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.HS 00000000000000
.DA #0
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*--------------------------------------
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.AS "(C)APPLE "
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*--------------------------------------
GP.MLIENTRY php
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sei
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jmp GP.MLICONT
*--------------------------------------
*aftirq sta RRAMWRAMBNK1 read/write RAM bank 1
* jmp fix45 restore $45 after interrupt in LC
*oldacc .DA #0
*afbank .HS 00
*--------------------------------------
.LIST ON
GP.FREE1 .EQ $BF58-*
.LIST OFF
.BS GP.FREE1
*--------------------------------------
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* memory map of lower 48k. each bit represents 1 page.
* protected pages = 1, unprotected = 0
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*--------------------------------------
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.HS C000000000000000 MEMTABL
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.HS 0000000000000000
.HS 0000000000000001
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*--------------------------------------
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* table of buffer addresses for currently open files.
* these can only be changed thru the mli call setbuf.
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*--------------------------------------
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buftbl .HS 0000 file #1
.HS 0000 file #2
.HS 0000 file #3
.HS 0000 file #4
.HS 0000 file #5
.HS 0000 file #6
.HS 0000 file #7
.HS 0000 file #8
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*--------------------------------------
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* table of interrupt vectors. these can only be changed
* by the mli call allocate_interrupt. values of the registers
* at the time of the most recent interrupt are stored here along
* with the address interrupted.
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*--------------------------------------
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inttbl .HS 0000 int #1
.HS 0000 int #2
.HS 0000 int #3
.HS 0000 int #4
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*--------------------------------------
*p8areg .DA #0 A register savearea
*p8xreg .DA #0 X register savearea
*p8yreg .DA #0 Y register savearea
*p8sreg .DA #0 S register savearea
*p8preg .DA #0 P register savearea
*bankid .DA #1 bank ID byte (ROM/RAM)
*intadr .HS 0000 interrupt return address
*--------------------------------------
.BS 8
*--------------------------------------
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p8date .HS 0000 bits 15-9=yr, 8-5=mo, 4-0=day
p8time .HS 0000 bits 12-8=hr, 5-0=min, low-hi format
flevel .DA #0 current file level
bubit .DA #0 backup bit disable, setfileinfo only
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*spare1 .DA #0 used to save acc
.DA #0
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newpfxptr .DA #0 appletalk alternate prefix ptr
machidbyte .DA #0 machine ID byte
rommap .DA #0 slot ROM bit map
preflag .DA #0 prefix active flag
mliact .DA #0 MLI active flag
mliretn .DA 0 last MLI call return address
mlix .DA #0 MLI X register savearea
mliy .DA #0 MLI Y register savearea
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*--------------------------------------
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* language card bank switching routines which must reside at $BFA0 because
* workstation software patches this area
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*--------------------------------------
GP.MLIEXIT eor $E000 test for rom enable
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beq .1 taken if ram enabled
sta RROMBNK2 read ROM
bne .2 always
.1 lda bnkbyt2 for alternate ram
eor $D000 test
beq .2 branch if not alternate ram
lda RRAMWRAMBNK2 else enable alt $D000
.2 pla return code
rti re-enable interrupts and return
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*--------------------------------------
GP.MLICONT sec
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ror mliact notify interrupt routines MLI active.
lda $E000 preserve language card/rom orientation
sta bnkbyt1 for proper restoration when mli exits.
lda $D000
sta bnkbyt2
lda RRAMWRAMBNK1 force ram card on
lda RRAMWRAMBNK1 with write allowed
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jmp XDOS
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*--------------------------------------
*GP.IrqExit lda bankid determine state of ram card (ROM/RAM)
*irqxit0
* beq .2 branch if ram card enabled.
* bmi .1 branch if alternate $D000 enabled.
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* lsr determine if no ram card present.
* bcc .3 branch if rom only system.
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* lda RROMWRAMBNK2 enable rom
* bcs .3 always taken
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*.1 lda RRAMWRAMBNK2 enable alternate $D000
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*.2 lda #$01 preset bankid for rom.
* sta bankid (reset if ram card interrupt)
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*.3 lda p8areg restore acc
* rti exit
*--------------------------------------
.LIST ON
GP.FREE2 .EQ $BFEB-*
.LIST OFF
.BS GP.FREE2
*--------------------------------------
GP.IRQV bit RRAMWRAMBNK1 ***NEW ROM ONLY IRQ $fffe > $Cxxx space***
bit RRAMWRAMBNK1 Entry used when rom/mainLC/auxLC
jmp XDOS.IRQV
*--------------------------------------
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bnkbyt1 .DA #0
bnkbyt2 .DA #0
.HS 00000000 pad to before $BFFA
.DA #4 gsos compatibility byte ($BFFA)
.DA #0 pad
.DA #0 reserved
.DA #0 version # of running interpreter
.DA #0 preserved for System Utilities
kversion .HS 23 represents release 2.0.3
*--------------------------------------
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GP.LEN .EQ *-GP.START
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MAN
SAVE USR/SRC/PRODOS.FX/PRODOS.S.GP
LOAD USR/SRC/PRODOS.FX/PRODOS.S
ASM