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This commit is contained in:
Michael Steil 2008-10-13 01:12:57 +00:00
parent d38b698496
commit 33058e49d1
1 changed files with 366 additions and 9 deletions
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msbasic.s
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@ -116,6 +116,30 @@ QT_BREAK:
.byte "BREAK"
.byte $00
.endif
; ----------------------------------------------------------------------------
; CALLED BY "NEXT" AND "FOR" TO SCAN THROUGH
; THE STACK FOR A FRAME WITH THE SAME VARIABLE.
;
; (FORPNT) = ADDRESS OF VARIABLE IF "FOR" OR "NEXT"
; = $XXFF IF CALLED FROM "RETURN"
; <<< BUG: SHOULD BE $FFXX >>>
;
; RETURNS .NE. IF VARIABLE NOT FOUND,
; (X) = STACK PNTR AFTER SKIPPING ALL FRAMES
;
; .EQ. IF FOUND
; (X) = STACK PNTR OF FRAME FOUND
; ----------------------------------------------------------------------------
GTFORPNT:
tsx
inx
@ -146,6 +170,15 @@ L229A:
bne L2279
L22A1:
rts
; ----------------------------------------------------------------------------
; MOVE BLOCK OF MEMORY UP
;
; ON ENTRY:
; (Y,A) = (HIGHDS) = DESTINATION END+1
; (LOWTR) = LOWEST ADDRESS OF SOURCE
; (HIGHTR) = HIGHEST SOURCE ADDRESS+1
; ----------------------------------------------------------------------------
BLTU:
jsr REASON
sta STREND
@ -190,6 +223,11 @@ L22DD:
dex
bne L22D6
rts
; ----------------------------------------------------------------------------
; CHECK IF ENOUGH ROOM LEFT ON STACK
; FOR "FOR", "GOSUB", OR EXPRESSION EVALUATION
; ----------------------------------------------------------------------------
CHKMEM:
asl a
adc #SPACE_FOR_GOSUB
@ -199,6 +237,11 @@ CHKMEM:
cpx INDEX
bcc MEMERR
rts
; ----------------------------------------------------------------------------
; CHECK IF ENOUGH ROOM BETWEEN ARRAYS AND STRINGS
; (Y,A) = ADDR ARRAYS NEED TO GROW TO
; ----------------------------------------------------------------------------
REASON:
cpy FRETOP+1
bcc L231E
@ -231,8 +274,18 @@ L230B:
bcs MEMERR
L231E:
rts
; ----------------------------------------------------------------------------
MEMERR:
ldx #ERR_MEMFULL
; ----------------------------------------------------------------------------
; HANDLE AN ERROR
;
; (X)=OFFSET IN ERROR MESSAGE TABLE
; (ERRFLG) > 128 IF "ON ERR" TURNED ON
; (CURLIN+1) = $FF IF IN DIRECT MODE
; ----------------------------------------------------------------------------
ERROR:
lsr Z14
.ifdef CONFIG_CBM_ALL
@ -266,12 +319,24 @@ L2329:
jsr STKINI
lda #<QT_ERROR
ldy #>QT_ERROR
; ----------------------------------------------------------------------------
; PRINT STRING AT (Y,A)
; PRINT CURRENT LINE # UNLESS IN DIRECT MODE
; FALL INTO WARM RESTART
; ----------------------------------------------------------------------------
PRINT_ERROR_LINNUM:
jsr STROUT
ldy CURLIN+1
iny
beq RESTART
jsr INPRT
; ----------------------------------------------------------------------------
; WARM RESTART ENTRY
;
; COME HERE FROM MONITOR BY CTL-C, 0G, 3D0G, OR E003G
; ----------------------------------------------------------------------------
RESTART:
.ifdef KBD
jsr CRDO
@ -310,6 +375,10 @@ L2351:
bcc NUMBERED_LINE
jsr PARSE_INPUT_LINE
jmp NEWSTT2
; ----------------------------------------------------------------------------
; HANDLE NUMBERED LINE
; ----------------------------------------------------------------------------
NUMBERED_LINE:
jsr LINGET
jsr PARSE_INPUT_LINE
@ -408,6 +477,8 @@ L23AD:
inc DEST+1
dex
bne L23AD
.endif
; ----------------------------------------------------------------------------
PUT_NEW_LINE:
.ifdef CBM2
jsr SETPTRS
@ -416,6 +487,7 @@ PUT_NEW_LINE:
beq L2351
clc
.else
.ifndef KBD
lda INPUTBUFFER
beq FIX_LINKS
lda MEMSIZ
@ -447,11 +519,17 @@ L23D6:
sty VARTAB+1
ldy EOLPNTR
dey
; ---COPY LINE INTO PROGRAM-------
L23E6:
lda INPUTBUFFER-4,y
sta (LOWTR),y
dey
bpl L23E6
; ----------------------------------------------------------------------------
; CLEAR ALL VARIABLES
; RE-ESTABLISH ALL FORWARD LINKS
; ----------------------------------------------------------------------------
FIX_LINKS:
jsr SETPTRS
.ifdef CBM2_KBD
@ -531,6 +609,10 @@ LE39A:
RET3:
rts
.else
; ----------------------------------------------------------------------------
; READ A LINE, AND STRIP OFF SIGN BITS
; ----------------------------------------------------------------------------
.ifdef APPLE
INLIN:
ldx #$DD
@ -542,9 +624,9 @@ INLIN1:
ldx #$EF
L0C32:
lda #$00
sta $0200,x
ldx #$FF
ldy #$01
sta INPUTBUFFER,x
ldx #<INPUTBUFFER-1
ldy #>INPUTBUFFER-1
rts
RDKEY:
jsr LFD0C
@ -640,6 +722,10 @@ GETLN:
L2465:
rts
.endif /* KBD */
; ----------------------------------------------------------------------------
; TOKENIZE THE INPUT LINE
; ----------------------------------------------------------------------------
PARSE_INPUT_LINE:
ldx TXTPTR
ldy #$04
@ -670,6 +756,10 @@ L2484:
bcc L248C
cmp #$3C
bcc L24AC
; ----------------------------------------------------------------------------
; SEARCH TOKEN NAME TABLE FOR MATCH STARTING
; WITH CURRENT CHAR FROM INPUT LINE
; ----------------------------------------------------------------------------
L248C:
sty STRNG2
ldy #$00
@ -697,6 +787,9 @@ L2498:
cmp #$80
bne L24D7
ora EOLPNTR
; ----------------------------------------------------------------------------
; STORE CHARACTER OR TOKEN IN OUTPUT LINE
; ----------------------------------------------------------------------------
L24AA:
ldy STRNG2
L24AC:
@ -717,6 +810,10 @@ L24C1:
sbc #TOKEN_REM-':'
bne L246C
sta ENDCHR
; ----------------------------------------------------------------------------
; HANDLE LITERAL (BETWEEN QUOTES) OR REMARK,
; BY COPYING CHARS UP TO ENDCHR.
; ----------------------------------------------------------------------------
L24C8:
lda INPUTBUFFERX,x
beq L24AC
@ -727,6 +824,9 @@ L24D0:
sta INPUTBUFFER-5,y
inx
bne L24C8
; ----------------------------------------------------------------------------
; ADVANCE POINTER TO NEXT TOKEN NAME
; ----------------------------------------------------------------------------
L24D7:
ldx TXTPTR
inc EOLPNTR
@ -738,6 +838,7 @@ L24DB:
bne L2498
lda INPUTBUFFERX,x
bpl L24AA
; ---END OF LINE------------------
L24EA:
sta INPUTBUFFER-3,y
.if INPUTBUFFER >= $0100
@ -746,6 +847,16 @@ L24EA:
lda #<INPUTBUFFER-1
sta TXTPTR
rts
; ----------------------------------------------------------------------------
; SEARCH FOR LINE
;
; (LINNUM) = LINE # TO FIND
; IF NOT FOUND: CARRY = 0
; LOWTR POINTS AT NEXT LINE
; IF FOUND: CARRY = 1
; LOWTR POINTS AT LINE
; ----------------------------------------------------------------------------
FNDLIN:
.ifdef KBD
jsr CHRGET
@ -807,6 +918,10 @@ L251F:
.endif
L2520:
rts
; ----------------------------------------------------------------------------
; "NEW" STATEMENT
; ----------------------------------------------------------------------------
NEW:
bne L2520
SCRTCH:
@ -824,11 +939,16 @@ SCRTCH:
lda TXTTAB+1
adc #$00
sta VARTAB+1
; ----------------------------------------------------------------------------
SETPTRS:
jsr STXTPT
.ifndef APPLE
.ifdef CONFIG_11
lda #$00
; ----------------------------------------------------------------------------
; "CLEAR" STATEMENT
; ----------------------------------------------------------------------------
CLEAR:
bne L256A
.endif
@ -853,6 +973,7 @@ CLEARC:
sta STREND
sty STREND+1
jsr RESTORE
; ----------------------------------------------------------------------------
STKINI:
ldx #TEMPST
stx TEMPPT
@ -886,6 +1007,10 @@ STKINI:
sta SUBFLG
L256A:
rts
; ----------------------------------------------------------------------------
; SET TXTPTR TO BEGINNING OF PROGRAM
; ----------------------------------------------------------------------------
STXTPT:
clc
lda TXTTAB
@ -915,6 +1040,10 @@ LE4D4:
cmp JMPADRS+1
LE4DE:
rts
; ----------------------------------------------------------------------------
; "LIST" STATEMENT
; ----------------------------------------------------------------------------
LIST:
jsr LE440
bne LE4DE
@ -970,6 +1099,7 @@ L25A6:
beq L25C3
L25C1:
bcs L25E5
; ---LIST ONE LINE----------------
L25C3:
sty FORPNT
jsr LINPRT
@ -1030,6 +1160,19 @@ L25FD:
bmi L25CA
jsr OUTDO
bne L25FD
; ----------------------------------------------------------------------------
; "FOR" STATEMENT
;
; FOR PUSHES 18 BYTES ON THE STACK:
; 2 -- TXTPTR
; 2 -- LINE NUMBER
; 5 -- INITIAL (CURRENT) FOR VARIABLE VALUE
; 1 -- STEP SIGN
; 5 -- STEP VALUE
; 2 -- ADDRESS OF FOR VARIABLE IN VARTAB
; 1 -- FOR TOKEN ($81)
; ----------------------------------------------------------------------------
FOR:
lda #$80
sta SUBFLG
@ -1069,7 +1212,11 @@ L2619:
ldy #>STEP
sta INDEX
sty INDEX+1
jmp L2CED
jmp FRM_STACK3
; ----------------------------------------------------------------------------
; "STEP" PHRASE OF "FOR" STATEMENT
; ----------------------------------------------------------------------------
STEP:
lda #<CON_ONE
ldy #>CON_ONE
@ -1088,6 +1235,10 @@ L2665:
pha
lda #$81
pha
; ----------------------------------------------------------------------------
; PERFORM NEXT STATEMENT
; ----------------------------------------------------------------------------
NEWSTT:
jsr ISCNTC
lda TXTPTR
@ -1142,6 +1293,13 @@ NEWSTT2:
jsr CHRGET
jsr EXECUTE_STATEMENT
jmp NEWSTT
; ----------------------------------------------------------------------------
; EXECUTE A STATEMENT
;
; (A) IS FIRST CHAR OF STATEMENT
; CARRY IS SET
; ----------------------------------------------------------------------------
EXECUTE_STATEMENT:
.ifndef CONFIG_11_NOAPPLE
beq RET1
@ -1193,6 +1351,10 @@ LC721:
jsr SYNCHR
jmp GOTO
.endif
; ----------------------------------------------------------------------------
; "RESTORE" STATEMENT
; ----------------------------------------------------------------------------
RESTORE:
sec
lda TXTTAB
@ -1206,6 +1368,10 @@ SETDA:
RET2:
rts
.ifndef CONFIG_CBM_ALL
; ----------------------------------------------------------------------------
; SEE IF CONTROL-C TYPED
; ----------------------------------------------------------------------------
ISCNTC:
.endif
.ifdef KBD
@ -1246,8 +1412,16 @@ L0ECC:
clc
cmp #$03
.endif
; ----------------------------------------------------------------------------
; "STOP" STATEMENT
; ----------------------------------------------------------------------------
STOP:
bcs END2
; ----------------------------------------------------------------------------
; "END" STATEMENT
; ----------------------------------------------------------------------------
END:
clc
END2:
@ -1285,6 +1459,10 @@ LE664:
tay
jmp SNGFLT
.endif
; ----------------------------------------------------------------------------
; "CONT" COMMAND
; ----------------------------------------------------------------------------
CONT:
bne RET1
ldx #ERR_CANTCONT
@ -1440,12 +1618,26 @@ L27C2:
sty VARTAB+1
jmp FIX_LINKS
.endif
; ----------------------------------------------------------------------------
; "RUN" COMMAND
; ----------------------------------------------------------------------------
RUN:
bne L27CF
jmp SETPTRS
L27CF:
jsr CLEARC
jmp L27E9
; ----------------------------------------------------------------------------
; "GOSUB" STATEMENT
;
; LEAVES 7 BYTES ON STACK:
; 2 -- RETURN ADDRESS (NEWSTT)
; 2 -- TXTPTR
; 2 -- LINE #
; 1 -- GOSUB TOKEN
; ----------------------------------------------------------------------------
GOSUB:
lda #$03
jsr CHKMEM
@ -1463,6 +1655,11 @@ L27E9:
jsr CHRGOT
jsr GOTO
jmp NEWSTT
; ----------------------------------------------------------------------------
; "GOTO" STATEMENT
; ALSO USED BY "RUN" AND "GOSUB"
; ----------------------------------------------------------------------------
GOTO:
jsr LINGET
jsr REMN
@ -1495,6 +1692,10 @@ L280D:
sta TXTPTR+1
L281E:
rts
; ----------------------------------------------------------------------------
; "POP" AND "RETURN" STATEMENTS
; ----------------------------------------------------------------------------
POP:
bne L281E
lda #$FF
@ -1512,8 +1713,10 @@ POP:
UNDERR:
ldx #ERR_UNDEFSTAT
jmp ERROR
; ----------------------------------------------------------------------------
SYNERR2:
jmp SYNERR
; ----------------------------------------------------------------------------
RETURN:
pla
pla
@ -1524,8 +1727,17 @@ RETURN:
sta TXTPTR
pla
sta TXTPTR+1
; ----------------------------------------------------------------------------
; "DATA" STATEMENT
; EXECUTED BY SKIPPING TO NEXT COLON OR EOL
; ----------------------------------------------------------------------------
DATA:
jsr DATAN
; ----------------------------------------------------------------------------
; ADD (Y) TO TXTPTR
; ----------------------------------------------------------------------------
ADDON:
tya
clc
@ -1535,6 +1747,10 @@ ADDON:
inc TXTPTR+1
L2852:
rts
; ----------------------------------------------------------------------------
; SCAN AHEAD TO NEXT ":" OR EOL
; ----------------------------------------------------------------------------
DATAN:
ldx #$3A
.byte $2C
@ -1562,6 +1778,10 @@ L2866:
bne L2866
beq L285E
.endif
; ----------------------------------------------------------------------------
; "IF" STATEMENT
; ----------------------------------------------------------------------------
IF:
jsr FRMEVL
jsr CHRGOT
@ -1572,6 +1792,10 @@ IF:
L2884:
lda FAC
bne L288D
; ----------------------------------------------------------------------------
; "REM" STATEMENT, OR FALSE "IF" STATEMENT
; ----------------------------------------------------------------------------
REM:
jsr REMN
beq ADDON
@ -1581,6 +1805,13 @@ L288D:
jmp GOTO
L2895:
jmp EXECUTE_STATEMENT
; ----------------------------------------------------------------------------
; "ON" STATEMENT
;
; ON <EXP> GOTO <LIST>
; ON <EXP> GOSUB <LIST>
; ----------------------------------------------------------------------------
ON:
jsr GETBYT
pha
@ -1602,6 +1833,10 @@ L28AC:
pla
L28B7:
rts
; ----------------------------------------------------------------------------
; CONVERT LINE NUMBER
; ----------------------------------------------------------------------------
LINGET:
ldx #$00
stx LINNUM
@ -1646,6 +1881,13 @@ L28BE:
L28EC:
jsr CHRGET
jmp L28BE
; ----------------------------------------------------------------------------
; "LET" STATEMENT
;
; LET <VAR> = <EXP>
; <VAR> = <EXP>
; ----------------------------------------------------------------------------
LET:
jsr PTRGET
sta FORPNT
@ -1678,10 +1920,18 @@ LET2:
rts
L2923:
.endif
; ----------------------------------------------------------------------------
; REAL VARIABLE = EXPRESSION
; ----------------------------------------------------------------------------
jmp SETFOR
LETSTRING:
.ifndef CONFIG_SMALL
pla
; ----------------------------------------------------------------------------
; INSTALL STRING, DESCRIPTOR ADDRESS IS AT FAC+3,4
; ----------------------------------------------------------------------------
PUTSTR:
.endif
.ifdef CONFIG_CBM_ALL
@ -1810,10 +2060,16 @@ LC98F:
plp
jmp PRINT
.endif
; ----------------------------------------------------------------------------
PRSTRING:
jsr STRPRT
L297E:
jsr CHRGOT
; ----------------------------------------------------------------------------
; "PRINT" STATEMENT
; ----------------------------------------------------------------------------
PRINT:
beq CRDO
PRINT2:
@ -2036,8 +2292,16 @@ L2A13:
jsr OUTSP
bne L2A0A
.endif
; ----------------------------------------------------------------------------
; PRINT STRING AT (Y,A)
; ----------------------------------------------------------------------------
STROUT:
jsr STRLIT
; ----------------------------------------------------------------------------
; PRINT STRING AT (FACMO,FACLO)
; ----------------------------------------------------------------------------
STRPRT:
jsr FREFAC
tax
@ -2053,6 +2317,7 @@ L2A22:
bne L2A22
jsr PRINTNULLS
jmp L2A22
; ----------------------------------------------------------------------------
OUTSP:
.ifdef CBM2
lda $0E
@ -2069,6 +2334,10 @@ LCA40:
.byte $2C
OUTQUES:
lda #$3F
; ----------------------------------------------------------------------------
; PRINT CHAR FROM (A)
; ----------------------------------------------------------------------------
OUTDO:
.ifndef KBD
bit Z14
@ -2159,9 +2428,15 @@ LE900:
pla
rts
.endif
L2A59:
; ----------------------------------------------------------------------------
; INPUT CONVERSION ERROR: ILLEGAL CHARACTER
; IN NUMERIC FIELD. MUST DISTINGUISH
; BETWEEN INPUT, READ, AND GET
; ----------------------------------------------------------------------------
INPUTERR:
lda INPUTFLG
beq L2A6E
beq RESPERR
.ifdef CBM2_KIM_APPLE
bmi L2A63
ldy #$FF
@ -2180,7 +2455,7 @@ L2A67:
sty CURLIN+1
SYNERR4:
jmp SYNERR
L2A6E:
RESPERR:
.ifdef CONFIG_CBM_ALL
lda Z03
beq LCA8F
@ -2198,6 +2473,10 @@ LCA8F:
LE920:
rts
.ifndef CONFIG_SMALL
; ----------------------------------------------------------------------------
; "GET" STATEMENT
; ----------------------------------------------------------------------------
GET:
jsr ERRDIR
.ifdef CONFIG_CBM_ALL
@ -2244,6 +2523,10 @@ LCAD8:
rts
LCAE0:
.endif
; ----------------------------------------------------------------------------
; "INPUT" STATEMENT
; ----------------------------------------------------------------------------
INPUT:
.ifndef KBD
lsr Z14
@ -2312,6 +2595,10 @@ GETC:
jsr LF43D
jmp LE664
.endif
; ----------------------------------------------------------------------------
; "READ" STATEMENT
; ----------------------------------------------------------------------------
READ:
ldx DATPTR
ldy DATPTR+1
@ -2325,6 +2612,15 @@ L2ABE:
L2ABE:
tya
.endif
; ----------------------------------------------------------------------------
; PROCESS INPUT LIST
;
; (Y,X) IS ADDRESS OF INPUT DATA STRING
; (A) = VALUE FOR INPUTFLG: $00 FOR INPUT
; $40 FOR GET
; $98 FOR READ
; ----------------------------------------------------------------------------
PROCESS_INPUT_LIST:
sta INPUTFLG
stx INPTR
@ -2376,6 +2672,8 @@ LCB64:
L2AF8:
stx TXTPTR
sty TXTPTR+1
; ----------------------------------------------------------------------------
INSTART:
jsr CHRGET
bit VALTYP
@ -2420,6 +2718,7 @@ L2B28:
jsr PUTSTR
.endif
jmp INPUT_MORE
; ----------------------------------------------------------------------------
L2B34:
jsr FIN
.ifdef CONFIG_SMALL
@ -2428,12 +2727,13 @@ L2B34:
lda VALTYP+1
jsr LET2
.endif
; ----------------------------------------------------------------------------
INPUT_MORE:
jsr CHRGOT
beq L2B48
cmp #$2C
beq L2B48
jmp L2A59
jmp INPUTERR
L2B48:
lda TXTPTR
ldy TXTPTR+1
@ -2447,6 +2747,7 @@ L2B48:
beq INPDONE
jsr CHKCOM
jmp PROCESS_INPUT_ITEM
; ----------------------------------------------------------------------------
FINDATA:
jsr DATAN
iny
@ -2470,6 +2771,7 @@ L2B7C:
cpx #$83
bne FINDATA
jmp INSTART
; ---NO MORE INPUT REQUESTED------
INPDONE:
lda INPTR
ldy INPTR+1
@ -2494,6 +2796,7 @@ L2B94:
L2BA1:
rts
; ----------------------------------------------------------------------------
ERREXTRA:
.ifdef KBD
.byte "?Extra"
@ -2516,6 +2819,10 @@ LEA30:
.byte $00,$1B,$0D,$13
.byte " BASIC"
.endif
; ----------------------------------------------------------------------------
; "NEXT" STATEMENT
; ----------------------------------------------------------------------------
NEXT:
bne NEXT1
ldy #$00
@ -2592,13 +2899,31 @@ L2C22:
bne L2C1F
jsr CHRGET
jsr NEXT1
; ----------------------------------------------------------------------------
; EVALUATE EXPRESSION, MAKE SURE IT IS NUMERIC
; ----------------------------------------------------------------------------
FRMNUM:
jsr FRMEVL
; ----------------------------------------------------------------------------
; MAKE SURE (FAC) IS NUMERIC
; ----------------------------------------------------------------------------
CHKNUM:
clc
.byte $24
; ----------------------------------------------------------------------------
; MAKE SURE (FAC) IS STRING
; ----------------------------------------------------------------------------
CHKSTR:
sec
; ----------------------------------------------------------------------------
; MAKE SURE (FAC) IS CORRECT TYPE
; IF C=0, TYPE MUST BE NUMERIC
; IF C=1, TYPE MUST BE STRING
; ----------------------------------------------------------------------------
CHKVAL:
bit VALTYP
bmi L2C41
@ -2611,6 +2936,12 @@ L2C43:
ldx #ERR_BADTYPE
JERROR:
jmp ERROR
; ----------------------------------------------------------------------------
; EVALUATE THE EXPRESSION AT TXTPTR, LEAVING THE
; RESULT IN FAC. WORKS FOR BOTH STRING AND NUMERIC
; EXPRESSIONS.
; ----------------------------------------------------------------------------
FRMEVL:
ldx TXTPTR
bne L2C4E
@ -2675,6 +3006,10 @@ L2CA4:
tax
beq GOEX
bne FRM_PERFORM2
; ----------------------------------------------------------------------------
; FOUND ONE OR MORE RELATIONAL OPERATORS <,=,>
; ----------------------------------------------------------------------------
FRM_RELATIONAL:
lsr VALTYP
txa
@ -2691,6 +3026,11 @@ PREFNC:
cmp MATHTBL,y
bcs FRM_PERFORM2
bcc L2CA3
; ----------------------------------------------------------------------------
; STACK THIS OPERATION AND CALL FRMEVL FOR
; ANOTHER ONE
; ----------------------------------------------------------------------------
FRM_RECURSE:
lda MATHTBL+2,y
pha
@ -2701,9 +3041,21 @@ FRM_RECURSE:
jmp FRMEVL1
SNTXERR:
jmp SYNERR
; ----------------------------------------------------------------------------
; STACK (FAC)
; THREE ENTRY POINTS:
; 1, FROM FRMEVL
; 2, FROM "STEP"
; 3, FROM "FOR"
; ----------------------------------------------------------------------------
FRM_STACK1:
lda FACSIGN
ldx MATHTBL,y
; ----------------------------------------------------------------------------
; ENTER HERE FROM "STEP", TO PUSH STEP SIGN AND VALUE
; ----------------------------------------------------------------------------
FRM_STACK2:
tay
pla
@ -2721,7 +3073,12 @@ LEB69:
.endif
tya
pha
L2CED:
; ----------------------------------------------------------------------------
; ENTER HERE FROM "FOR", WITH (INDEX) = STEP,
; TO PUSH INITIAL VALUE OF "FOR" VARIABLE
; ----------------------------------------------------------------------------
FRM_STACK3:
jsr ROUND_FAC
.ifndef CONFIG_SMALL
lda FAC+4