mirror of https://github.com/A2osX/A2osX.git
396 lines
8.2 KiB
Plaintext
396 lines
8.2 KiB
Plaintext
NEW
|
||
PREFIX
|
||
AUTO 4,1
|
||
*--------------------------------------
|
||
* SYSCALL (AUXLC to AUXLC)
|
||
* Used by user & kernel for inter bank Calls
|
||
* In:
|
||
* X = SYSfnc.Index
|
||
* Y,A = free for Inline param
|
||
*--------------------------------------
|
||
GP.CodeStart jmp GP.SysCall
|
||
*--------------------------------------
|
||
* LIBCALL (AUXLC to AUXLC)
|
||
* Used by user
|
||
* In:
|
||
* Y = LIB.ID
|
||
* X = LIBfnc.Index
|
||
* A = free for Inline param
|
||
*--------------------------------------
|
||
jmp GP.LibCall
|
||
*--------------------------------------
|
||
* AppleTalk MLICALL (AUXLC to MAINLC)
|
||
* Used by user
|
||
* In:
|
||
* Y,A = Params
|
||
*--------------------------------------
|
||
jmp GP.AtkCall
|
||
*--------------------------------------
|
||
* ROMCALL (AUXLC to ROMLC)
|
||
* Used by Kernel
|
||
* In:
|
||
* X = ROM Function
|
||
* Y,A = Param
|
||
*--------------------------------------
|
||
jmp GP.RomCall
|
||
*--------------------------------------
|
||
* BADCALL
|
||
*--------------------------------------
|
||
lda #MLI.E.BADCALL
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
* SLEEP
|
||
*--------------------------------------
|
||
GP.Sleep php
|
||
sei
|
||
|
||
phy
|
||
ldy #S.PS.A
|
||
sta (pPs),y
|
||
|
||
txa
|
||
iny #S.PS.X
|
||
sta (pPs),y
|
||
|
||
pla
|
||
iny #S.PS.Y
|
||
sta (pPs),y
|
||
|
||
pla
|
||
iny #S.PS.P
|
||
sta (pPs),y
|
||
|
||
pla get PC LO
|
||
plx get PC HI
|
||
|
||
inc Advance one byte because of return by RTI
|
||
bne .1
|
||
inx
|
||
|
||
.1 iny #S.PS.PC
|
||
sta (pPs),y
|
||
|
||
txa
|
||
iny #S.PS.PC+1
|
||
sta (pPs),y
|
||
|
||
tsx
|
||
|
||
inx
|
||
inx keep PC HI,LO from KERNEL jsr PSExec/PSResume
|
||
|
||
inx Stack Ptr is $1ff if empty
|
||
|
||
txa
|
||
|
||
beq .3
|
||
|
||
tay Save !Byte count for later
|
||
|
||
.2 pla
|
||
>PUSHA
|
||
inx
|
||
bne .2
|
||
|
||
tya
|
||
|
||
.3 >PUSHA push CPU Stack BC to restore on top of Soft Stack
|
||
|
||
inc $1fe PC=PC+1
|
||
bne .4
|
||
inc $1ff because of RTI
|
||
|
||
.4 lda (pPs)
|
||
ora #S.PS.F.SLEEP
|
||
sta (pPs)
|
||
|
||
lda #0 cld,clc,cli
|
||
pha
|
||
rti exit to kernel with CC
|
||
*--------------------------------------
|
||
* *** MUST BE REINTRANT ***
|
||
*--------------------------------------
|
||
GP.SysCall dec IRQ.InKernel
|
||
sty .5+1 save Y (Func Arg)
|
||
sta .6+1 save A (Func Arg)
|
||
stx .7+1 save X (Func ID)
|
||
|
||
lda K.SYSCALL.BANK,x Get Target BNK
|
||
bpl .1 0, E000, no BNK change
|
||
|
||
cmp $D000 #RRAMWRAMBNK1 or #RRAMWRAMBNK2
|
||
beq .1 same as actual BNK...go restore A and JMP
|
||
|
||
tax set Target BNK in x
|
||
lda $D000 get source BNK
|
||
bit $C000,x switch to Target BNK
|
||
bit $C000,x
|
||
|
||
.1 pha remember source BNK
|
||
|
||
jsr .5 go to kernel.....
|
||
|
||
stx .4+1 save X
|
||
|
||
plx get back Source BNK
|
||
|
||
bit $C000,x switch to Target BNK
|
||
bit $C000,x
|
||
|
||
bcc .4 no error quit...
|
||
|
||
tax CS,A=0 ?
|
||
bne .4 no, return error to caller
|
||
|
||
pla get PC LO
|
||
plx get PC HI
|
||
sec
|
||
sbc #3 move back JSR GP.SysCall
|
||
bcs .2
|
||
|
||
dex
|
||
|
||
.2 phx
|
||
pha
|
||
|
||
ldy .5+1
|
||
lda .6+1
|
||
ldx .7+1
|
||
inc IRQ.InKernel
|
||
jmp GP.Sleep
|
||
|
||
.4 ldx #$FF Self Modified
|
||
inc IRQ.InKernel
|
||
rts Unmodified Carry
|
||
|
||
.5 ldy #$FF Self Modified
|
||
.6 lda #$FF Self Modified
|
||
.7 ldx #$FF Self Modified
|
||
jmp (K.SYSCALL.JMP,x)
|
||
*--------------------------------------
|
||
GP.LibCall dec IRQ.InKernel
|
||
|
||
pha No need to save X, K.GetMemPtr will leave it unmodified
|
||
tya Get LIB hMem in A
|
||
jsr K.GetMemPtr Get LIB Code Segment (MemMgr in $E000, no BNK change)
|
||
>STYA .1+1
|
||
pla
|
||
.1 jsr $FFFF SELF MODIFIED
|
||
|
||
GP.LibCall.8 inc IRQ.InKernel
|
||
rts
|
||
*--------------------------------------
|
||
GP.AtkCall dec IRQ.InKernel
|
||
|
||
>STYA .1
|
||
jsr GO.ProDOS
|
||
jsr MLI
|
||
.DA #MLIATALK
|
||
.1 .DA *
|
||
jsr GO.A2osX
|
||
|
||
bra GP.LibCall.8
|
||
*--------------------------------------
|
||
GP.RomCallPushFAC
|
||
jsr GP.ROMCALL
|
||
|
||
lda pStack
|
||
sec
|
||
sbc #5
|
||
sta pStack
|
||
sta FORPNT Ptr to dst buffer
|
||
lda pStack+1
|
||
sta FORPNT+1
|
||
|
||
ldx #ROM.GETFAC
|
||
*--------------------------------------
|
||
GP.RomCall dec IRQ.InKernel
|
||
|
||
phx
|
||
ldx $D000
|
||
stx .8+1
|
||
|
||
bit RROMBNK1
|
||
|
||
plx
|
||
jsr .1
|
||
|
||
.8 ldx #$ff
|
||
bit $C000,x
|
||
bit $C000,x
|
||
|
||
inc IRQ.InKernel
|
||
|
||
clc
|
||
rts
|
||
|
||
.1 jmp (.2,x)
|
||
|
||
* http://www.txbobsc.com/scsc/scdocumentor/E7A0.html
|
||
|
||
.2 .DA $E7AA FSUBT
|
||
.DA $E7C1 FADDT
|
||
.DA $E82E NORMALIZE.FAC.2 (L->F)
|
||
.DA $E941 LOG
|
||
.DA $E987 FMULTT.1
|
||
.DA $E9E7 LOAD.ARG.FROM.INDEX
|
||
.DA $EA6B FDIVT+2
|
||
.DA $EAFD LOAD.FAC.FROM.INDEX
|
||
|
||
.DA $EB27 SETFOR (GETFAC)
|
||
.DA $EBB2 FCOMP
|
||
.DA $EBF2 QINT (F->L)
|
||
.DA $EC4A FIN StrToF
|
||
.DA $ED36 FOUT.1 PrintF
|
||
.DA $EE8D SQR
|
||
.DA $EE97 FPWRT
|
||
.DA $EF09 EXP
|
||
|
||
.DA $EFEA COS
|
||
.DA $EFF1 SIN
|
||
.DA $F03A TAN
|
||
.DA $F09E ATN
|
||
*--------------------------------------
|
||
GP.MLICall stx .1
|
||
sta K.MLI.PARAMS
|
||
jsr GO.ProDOS
|
||
jsr MLI
|
||
.1 .BS 1
|
||
.DA K.MLI.PARAMS
|
||
jsr GO.A2osX
|
||
rts
|
||
*--------------------------------------
|
||
GO.ProDOS pha
|
||
lda $D000 We re coming from AUXLC, saving bank...
|
||
sta GO.A2osX.BNK+1
|
||
pla
|
||
php
|
||
clc
|
||
.HS 2C bit abs
|
||
|
||
GO.A2osX php
|
||
sec
|
||
|
||
sei
|
||
|
||
sta GO.EXIT.SaveA+1
|
||
stx GO.EXIT.SaveX+1
|
||
sty GO.EXIT.SaveY+1
|
||
|
||
pla Restore P in A for later
|
||
|
||
plx Get PC and add 1 for return
|
||
ply
|
||
inx
|
||
bne .1
|
||
iny
|
||
|
||
.1 stx GO.EXIT.JMP+1
|
||
sty GO.EXIT.JMP+2
|
||
|
||
bcs GO.A2osX.BNK if CS, go AUXLC
|
||
|
||
bit RRAMWRAMBNK1 Go MAINLC (ProDOS), always BNK1
|
||
bit RRAMWRAMBNK1
|
||
|
||
tsx
|
||
stx A2osX.SaveSX
|
||
ldx A2osX.SaveSM
|
||
txs
|
||
sta CLRALTZP
|
||
bra GO.EXIT
|
||
|
||
GO.A2osX.BNK ldx #RRAMWRAMBNK1 Self Modified, initialized to BNK1 for INIT3
|
||
|
||
bit $C000,x
|
||
bit $C000,x
|
||
|
||
sta SETALTZP
|
||
tsx
|
||
stx A2osX.SaveSM
|
||
ldx A2osX.SaveSX
|
||
txs
|
||
*--------------------------------------
|
||
GO.EXIT pha push P on stack
|
||
GO.EXIT.SaveY ldy #$ff
|
||
GO.EXIT.SaveX ldx #$ff
|
||
GO.EXIT.SaveA lda #$ff
|
||
plp
|
||
GO.EXIT.JMP jmp $FFFF SELF MODIFIED
|
||
*--------------------------------------
|
||
* Called from ProDOS IRQ Manager (LCBNK1)
|
||
* A,X,Y, $FA->$FF Already Saved
|
||
* Main RAM,ZP/LC selected
|
||
* must begin with CLD
|
||
* must exit with RTS
|
||
* - CC if IRQ cleared, CS if NOT
|
||
*--------------------------------------
|
||
GP.IrqH cld
|
||
|
||
bit IRQ.SkipA2osX After A2osX IRQ.H ?
|
||
bmi GP.IrqH.Exit
|
||
|
||
sta SETALTZP switch to aux LC
|
||
tsx
|
||
stx A2osX.SaveSM
|
||
ldx A2osX.SaveSX
|
||
txs
|
||
|
||
GP.IrqH.JSR jsr K.IrqH.DEV SELF MODIFIED
|
||
|
||
tsx go back to Main
|
||
stx A2osX.SaveSX
|
||
ldx A2osX.SaveSM
|
||
txs
|
||
sta CLRALTZP
|
||
|
||
rts
|
||
|
||
GP.IrqH.Exit stz IRQ.SkipA2osX reset flag
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
CORE.VBLState .BS 1
|
||
CORE.IRQMode .BS 1
|
||
CORE.TickPerSec .BS 1
|
||
CORE.TickPer10t .BS 1
|
||
CORE.TickSec .BS 1
|
||
CORE.Tick10t .BS 1
|
||
CORE.CPUStatCnt .DA #100
|
||
CORE.LastPSID .DA #0
|
||
*--------------------------------------
|
||
IRQ.Mode .BS 1
|
||
IRQ.SkipA2osX .BS 1
|
||
IRQ.Tick .BS 1
|
||
IRQ.InKernel .BS 1
|
||
IRQ.IntNum .BS 1
|
||
IRQ.VBL.n0 .BS 1
|
||
IRQ.VBL.0n .BS 1
|
||
IRQ.Vectors .BS K.IRQDEV.MAX*2
|
||
*--------------------------------------
|
||
*GO.Reset jsr GO.A2osX
|
||
* jmp CORE.Run
|
||
*--------------------------------------
|
||
*BrkHandler bra *
|
||
*--------------------------------------
|
||
GP.CodeEnd .BS $BEE0-*
|
||
*--------------------------------------
|
||
* $BEE0->$BEEF : Public Variables
|
||
*--------------------------------------
|
||
.BS 16
|
||
*--------------------------------------
|
||
* $BEF0->$BEFF : Kernel Config Block
|
||
*--------------------------------------
|
||
.DA #6 A2osX.HZ=60hz
|
||
.DA #2 A2osX.TTYDEVS=2
|
||
.HS 000000000000
|
||
.DA #0 ChRoot/Preemptive Disabled
|
||
.HS 00000000000000 All Slots marked as "Free"
|
||
*--------------------------------------
|
||
GP.End .EQ *
|
||
MAN
|
||
SAVE USR/SRC/SYS/KERNEL.S.GP
|
||
LOAD USR/SRC/SYS/KERNEL.S
|
||
ASM
|