180 lines
3.7 KiB
ArmAsm
180 lines
3.7 KiB
ArmAsm
.segment "CODE"
|
|
|
|
; ----------------------------------------------------------------------------
|
|
; "FRE" FUNCTION
|
|
;
|
|
; COLLECTS GARBAGE AND RETURNS # BYTES OF MEMORY LEFT
|
|
; ----------------------------------------------------------------------------
|
|
FRE:
|
|
lda VALTYP
|
|
beq L3188
|
|
jsr FREFAC
|
|
L3188:
|
|
jsr GARBAG
|
|
sec
|
|
lda FRETOP
|
|
sbc STREND
|
|
tay
|
|
lda FRETOP+1
|
|
sbc STREND+1
|
|
; FALL INTO GIVAYF TO FLOAT THE VALUE
|
|
; NOTE THAT VALUES OVER 32767 WILL RETURN AS NEGATIVE
|
|
|
|
; ----------------------------------------------------------------------------
|
|
; FLOAT THE SIGNED INTEGER IN A,Y
|
|
; ----------------------------------------------------------------------------
|
|
GIVAYF:
|
|
ldx #$00
|
|
stx VALTYP
|
|
sta FAC+1
|
|
sty FAC+2
|
|
ldx #$90
|
|
jmp FLOAT1
|
|
POS:
|
|
.ifndef GT1
|
|
ldy POSX
|
|
.else
|
|
lda POSX
|
|
jsr CONVPOSX
|
|
.endif
|
|
|
|
; ----------------------------------------------------------------------------
|
|
; FLOAT (Y) INTO FAC, GIVING VALUE 0-255
|
|
; ----------------------------------------------------------------------------
|
|
SNGFLT:
|
|
lda #$00
|
|
beq GIVAYF
|
|
|
|
; ----------------------------------------------------------------------------
|
|
; CHECK FOR DIRECT OR RUNNING MODE
|
|
; GIVING ERROR IF DIRECT MODE
|
|
; ----------------------------------------------------------------------------
|
|
ERRDIR:
|
|
ldx CURLIN+1
|
|
inx
|
|
bne RTS9
|
|
ldx #ERR_ILLDIR
|
|
.ifdef CONFIG_2
|
|
.byte $2C
|
|
LD288:
|
|
ldx #ERR_UNDEFFN
|
|
.endif
|
|
L31AF:
|
|
jmp ERROR
|
|
DEF:
|
|
jsr FNC
|
|
jsr ERRDIR
|
|
jsr CHKOPN
|
|
lda #$80
|
|
sta SUBFLG
|
|
jsr PTRGET
|
|
jsr CHKNUM
|
|
jsr CHKCLS
|
|
lda #TOKEN_EQUAL
|
|
jsr SYNCHR
|
|
.ifndef CONFIG_SMALL
|
|
pha
|
|
.endif
|
|
lda VARPNT+1
|
|
pha
|
|
lda VARPNT
|
|
pha
|
|
lda TXTPTR+1
|
|
pha
|
|
lda TXTPTR
|
|
pha
|
|
jsr DATA
|
|
jmp L3250
|
|
FNC:
|
|
lda #TOKEN_FN
|
|
jsr SYNCHR
|
|
ora #$80
|
|
sta SUBFLG
|
|
jsr PTRGET3
|
|
sta FNCNAM
|
|
sty FNCNAM+1
|
|
jmp CHKNUM
|
|
L31F3:
|
|
jsr FNC
|
|
lda FNCNAM+1
|
|
pha
|
|
lda FNCNAM
|
|
pha
|
|
jsr PARCHK
|
|
jsr CHKNUM
|
|
pla
|
|
sta FNCNAM
|
|
pla
|
|
sta FNCNAM+1
|
|
ldy #$02
|
|
.ifndef CONFIG_2
|
|
ldx #ERR_UNDEFFN
|
|
.endif
|
|
lda (FNCNAM),y
|
|
.ifndef CONFIG_2
|
|
beq L31AF
|
|
.endif
|
|
sta VARPNT
|
|
tax
|
|
iny
|
|
lda (FNCNAM),y
|
|
.ifdef CONFIG_2
|
|
beq LD288
|
|
.endif
|
|
sta VARPNT+1
|
|
.ifndef CONFIG_SMALL
|
|
iny
|
|
.endif
|
|
L3219:
|
|
lda (VARPNT),y
|
|
pha
|
|
dey
|
|
bpl L3219
|
|
ldy VARPNT+1
|
|
jsr STORE_FAC_AT_YX_ROUNDED
|
|
lda TXTPTR+1
|
|
pha
|
|
lda TXTPTR
|
|
pha
|
|
lda (FNCNAM),y
|
|
sta TXTPTR
|
|
iny
|
|
lda (FNCNAM),y
|
|
sta TXTPTR+1
|
|
lda VARPNT+1
|
|
pha
|
|
lda VARPNT
|
|
pha
|
|
jsr FRMNUM
|
|
pla
|
|
sta FNCNAM
|
|
pla
|
|
sta FNCNAM+1
|
|
jsr CHRGOT
|
|
beq L324A
|
|
jmp SYNERR
|
|
L324A:
|
|
pla
|
|
sta TXTPTR
|
|
pla
|
|
sta TXTPTR+1
|
|
L3250:
|
|
ldy #$00
|
|
pla
|
|
sta (FNCNAM),y
|
|
pla
|
|
iny
|
|
sta (FNCNAM),y
|
|
pla
|
|
iny
|
|
sta (FNCNAM),y
|
|
pla
|
|
iny
|
|
sta (FNCNAM),y
|
|
.ifndef CONFIG_SMALL
|
|
pla
|
|
iny
|
|
sta (FNCNAM),y
|
|
.endif
|
|
rts
|