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Remove SELFMODIFY references for Apple II

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This commit is contained in:
David Schmenk 2018-01-22 16:05:33 -08:00
parent 2175ce0d78
commit 1f999a86e8
2 changed files with 22 additions and 160 deletions
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13
src/vmsrc/plvm02.s
View File

@ -5,7 +5,6 @@
;* SYSTEM ROUTINES AND LOCATIONS
;*
;**********************************************************
SELFMODIFY = 0
;*
;* MONITOR SPECIAL LOCATIONS
;*
@ -1299,11 +1298,19 @@ BRLT INX
BMI BRNCH
+ BPL BRNCH
BMI NOBRNCH
IBRNCH LDA IPL
IBRNCH TYA ; FLATTEN IP
CLC
ADC IPL
STA TMPL
LDA #$00
TAY
ADC IPH
STA TMPH ; ADD BRANCH OFFSET
LDA TMPL
;CLC ; BETTER NOT CARRY OUT OF IP+Y
ADC ESTKL,X
STA IPL
LDA IPH
LDA TMPH
ADC ESTKH,X
STA IPH
JMP DROP

169
src/vmsrc/plvm802.s
View File

@ -6,7 +6,6 @@
;*
;**********************************************************
!CPU 65816
SELFMODIFY = 0
DEBUG = 0
;*
;* THE DEFAULT CPU MODE FOR EXECUTING OPCODES IS:
@ -262,10 +261,6 @@ DINTRP PHP
BRA SETDBG
} ELSE {
STX OPPAGE
!IF SELFMODIFY {
LDX LCRWEN+LCBNK2
LDX LCRWEN+LCBNK2
}
LDY #$00
JMP FETCHOP
}
@ -290,10 +285,6 @@ IINTRP PHP
BRA SETDBG
} ELSE {
STX OPPAGE
!IF SELFMODIFY {
LDX LCRWEN+LCBNK2
LDX LCRWEN+LCBNK2
}
JMP FETCHOP
}
!AS
@ -323,10 +314,6 @@ SETDBG LDY LCRWEN+LCBNK2
LDY #$00
}
STX OPPAGE
!IF SELFMODIFY {
LDX LCRWEN+LCBNK2
LDX LCRWEN+LCBNK2
}
JMP FETCHOP
;************************************************************
;* *
@ -845,14 +832,6 @@ _CEXSX LDA (IP) ; SKIP TO NEXT OP ADDR AFTER STRING
;*
;* LOAD VALUE FROM ADDRESS TAG
;*
!IF SELFMODIFY {
LB LDA TOS,S
STA LBLDX+1
LBLDX LDX $FFFF
TXA
STA TOS,S
JMP NEXTOP
} ELSE {
LB TYX
LDY #$00
TYA ; QUICKY CLEAR OUT MSB
@ -862,7 +841,6 @@ LB TYX
STA TOS,S
TXY
JMP NEXTOP
}
LW TYX
LDY #$00
LDA (TOS,S),Y
@ -870,16 +848,6 @@ LW TYX
TXY
JMP NEXTOP
;
!IF SELFMODIFY {
LBX LDA TOS,S
STA LBXLDX+1
STX ALTRDOFF
LBXLDX LDX $FFFF
STX ALTRDON
TXA
STA TOS,S
JMP NEXTOP
} ELSE {
LBX TYX
LDY #$00
TYA ; QUICKY CLEAR OUT MSB
@ -891,7 +859,6 @@ LBX TYX
STA TOS,S
TXY
JMP NEXTOP
}
LWX TYX
LDY #$00
STX ALTRDOFF
@ -961,16 +928,6 @@ LLWX INY ;+INC_IP
;*
;* LOAD VALUE FROM ABSOLUTE ADDRESS
;*
!IF SELFMODIFY {
LAB INY ;+INC_IP
LDA (IP),Y
STA LABLDX+1
LABLDX LDX $FFFF
TXA
PHA
INY ;+INC_IP
JMP NEXTOP
} ELSE {
LAB INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -981,7 +938,6 @@ LAB INY ;+INC_IP
PHA
INY ;+INC_IP
JMP NEXTOP
}
LAW INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -990,18 +946,6 @@ LAW INY ;+INC_IP
INY ;+INC_IP
JMP NEXTOP
;
!IF SELFMODIFY {
LABX INY ;+INC_IP
LDA (IP),Y
STA LABXLDX+1
STX ALTRDOFF
LABXLDX LDX $FFFF
STX ALTRDON
TXA
PHA
INY ;+INC_IP
JMP NEXTOP
} ELSE {
LABX INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1014,7 +958,6 @@ LABX INY ;+INC_IP
PHA
INY ;+INC_IP
JMP NEXTOP
}
LAWX INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1028,15 +971,6 @@ LAWX INY ;+INC_IP
;*
;* STORE VALUE TO ADDRESS
;*
!IF SELFMODIFY {
SB LDA TOS,S
STA SBSTX+1
LDA NOS,S
TAX
SBSTX STX $FFFF
PLA
JMP DROP
} ELSE {
SB TYX
LDY #$00
+ACCMEM8 ; 8 BIT A/M
@ -1046,7 +980,6 @@ SB TYX
TXY
PLA
JMP DROP
}
SW TYX
LDY #$00
LDA NOS,S
@ -1057,24 +990,6 @@ SW TYX
;*
;* STORE VALUE TO LOCAL FRAME OFFSET
;*
!IF SELFMODIFY {
- TYA
CLC
ADC IP
STA IP
LDY #$FF
SLB INY ;+INC_IP
BMI -
LDA (IP),Y
AND #$00FF
CLC
ADC IFP
STA SLBSTX+1
PLA
TAX
SLBSTX STX $FFFF
JMP NEXTOP
} ELSE {
SLB INY ;+INC_IP
TYX
LDA (IP),Y
@ -1087,7 +1002,6 @@ SLB INY ;+INC_IP
BMI +
JMP NEXTOP
+ JMP FIXNEXT
}
SLW INY ;+INC_IP
LDA (IP),Y
TYX
@ -1101,18 +1015,6 @@ SLW INY ;+INC_IP
;*
;* STORE VALUE TO LOCAL FRAME OFFSET WITHOUT POPPING STACK
;*
!IF SELFMODIFY {
DLB INY ;+INC_IP
LDA (IP),Y
AND #$00FF
CLC
ADC IFP
STA DLBSTX+1
LDA TOS,S
TAX
DLBSTX STX $FFFF
JMP NEXTOP
} ELSE {
DLB INY ;+INC_IP
TYX
+ACCMEM8 ; 8 BIT A/M
@ -1123,7 +1025,6 @@ DLB INY ;+INC_IP
+ACCMEM16 ; 16 BIT A/M
TXY
JMP NEXTOP
}
DLW INY ;+INC_IP
LDA (IP),Y
TYX
@ -1135,18 +1036,6 @@ DLW INY ;+INC_IP
;*
;* STORE VALUE TO ABSOLUTE ADDRESS
;*
!IF SELFMODIFY {
SAB INY ;+INC_IP
LDA (IP),Y
STA SABSTX+1
PLA
TAX
SABSTX STX $FFFF
INY
BMI +
JMP NEXTOP
+ JMP FIXNEXT
} ELSE {
SAB INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1158,7 +1047,6 @@ SAB INY ;+INC_IP
BMI +
JMP NEXTOP
+ JMP FIXNEXT
}
SAW INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1171,16 +1059,6 @@ SAW INY ;+INC_IP
;*
;* STORE VALUE TO ABSOLUTE ADDRESS WITHOUT POPPING STACK
;*
!IF SELFMODIFY {
DAB INY ;+INC_IP
LDA (IP),Y
STA DABSTX+1
LDA TOS,S
TAX
DABSTX STX $FFFF
INY ;+INC_IP
JMP NEXTOP
} ELSE {
DAB INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1190,7 +1068,6 @@ DAB INY ;+INC_IP
+ACCMEM16 ; 16 BIT A/M
INY ;+INC_IP
JMP NEXTOP
}
DAW INY ;+INC_IP
LDA (IP),Y
STA TMP
@ -1306,22 +1183,22 @@ BRLT PLA
+ BMI BRNCH
BEQ BRNCH
BPL NOBRNCH
IBRNCH PLA
IBRNCH TYA ; FLATTEN IP
CLC
ADC IP
STA IP
JMP NEXTOP
PLA
;CLC ; ADD BRANCH OFFSET (BETTER NOT CARRY OUT OF IP+Y)
ADC IP
STA IP
LDY #$01
JMP FETCHOP
;*
;* CALL INTO ABSOLUTE ADDRESS (NATIVE CODE)
;*
CALL INY ;+INC_IP
LDA (IP),Y
INY
BNE EMUSTK
LDX IPH
INX
STX IPH
BRA EMUSTK
;*
;* INDIRECT CALL TO ADDRESS (NATIVE CODE)
;*
@ -1421,10 +1298,6 @@ EMUSTK STA TMP
LDX #>DBGTBL
}
STX OPPAGE
!IF SELFMODIFY {
LDX LCRWEN+LCBNK2
LDX LCRWEN+LCBNK2
}
LDY #$01
JMP FETCHOP
;*
@ -1433,10 +1306,6 @@ EMUSTK STA TMP
CALLX INY ;+INC_IP
LDA (IP),Y
INY
BNE EMUSTKX
LDX IPH
INX
STX IPH
BRA EMUSTKX
;*
;* INDIRECT CALL TO ADDRESS (NATIVE CODE)
@ -1447,9 +1316,7 @@ EMUSTKX STA TMP
CLC
ADC IP
STA IP
SEC ; SWITCH TO EMULATED MODE
XCE
!AS
+ACCMEM8 ; 8 BIT A/M
TSC ; MOVE HW EVAL STACK TO ZP EVAL STACK
EOR #$FF
SEC
@ -1539,10 +1406,6 @@ EMUSTKX STA TMP
LDX #>DBGTBL
}
STX OPPAGE
!IF SELFMODIFY {
LDX LCRWEN+LCBNK2
LDX LCRWEN+LCBNK2
}
LDY #$01
JMP FETCHOP
;*
@ -1648,14 +1511,10 @@ LEAVE INY ;+INC_IP
STA PP
PLA ; RESTORE PREVIOUS FRAME
STA IFP
SEC ; SWITCH TO EMULATED MODE
XCE
!AS
LDA PSR
PHA
LDY PSR
PHY
PLP
RTS
+ACCMEM16 ; 16 BIT A/M
;
RETX STX ALTRDOFF
RET +ACCMEM8 ; 8 BIT A/M
@ -1696,12 +1555,8 @@ RET +ACCMEM8 ; 8 BIT A/M
+
}
TYX
+ACCMEM16
SEC ; SWITCH TO EMULATED MODE
XCE
!AS
LDA PSR
PHA
LDY PSR
PHY
PLP
RTS
!IF DEBUG {