A2osX/SYS/KERNEL.S.GP.txt
2018-12-10 17:45:37 +01:00

356 lines
7.2 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

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
*--------------------------------------
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 skip P
inx skip PC HI,LO
inx
txa
beq .8
tay Save !Byte count for later
.2 pla
>PUSHA
inx
bne .2
tya
.8 >PUSHA push CPU Stack BC to restore on top of Soft Stack
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
bit K.SYSCALL.BANK,x
bmi .1
jsr .8 in $E000, no BNK change
inc IRQ.InKernel
rts
.1 sta .7+1 save A (Func Arg)
lda K.SYSCALL.BANK,x Get Target BNK
cmp $D000 #RRAMWRAMBNK1 or #RRAMWRAMBNK2
bne .2
jsr .7 same as actual BNK...go restore A and JMP
inc IRQ.InKernel
rts
.2 stx .6+1 save X (Func ID)
tax set Target BNK in x
lda $D000 get source BNK
bit $C000,x switch to Target BNK
bit $C000,x
pha
jsr .6 go to kernel.....
stx .5+1 save X
plx get back Source BNK
bit $C000,x
bit $C000,x
.5 ldx #$FF Self Modified
inc IRQ.InKernel
rts Unmodified Carry
.6 ldx #$FF Self Modified
.7 lda #$FF Self Modified
.8 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 * SELF MODIFIED
inc IRQ.InKernel
rts
*--------------------------------------
GP.AtkCall dec IRQ.InKernel
>STYA .1
jsr GO.ProDOS
jsr MLI
.DA #MLIATALK
.1 .DA *
jsr GO.A2osX
inc IRQ.InKernel
rts
*--------------------------------------
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
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
*--------------------------------------
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
*--------------------------------------
*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 #4 A2osX.TTYDEVS=4
.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