A2osX/BIN/ACOS.S.KW.txt

NEW
  AUTO 3,1
				.LIST OFF
*--------------------------------------
KW.ADDINT
KW.APPEND
KW.BYTE
KW.CLEAR
KW.CLOCK
KW.CLOSE
KW.COPY
KW.CREATE
KW.ECHO
KW.EDIT
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.FILL
KW.FLAG
				lda #E.CSYN
				sec
				rts
*--------------------------------------
* FOR var = exp1 TO exp2 STEP exp3 ... NEXT
*--------------------------------------
KW.FOR			jsr CORE.GetNextCharNB
				bcs .98

				jsr CORE.CreateOrGetVar
				bcs .99

				lda VAR.TYPE
				bne .97

				jsr CORE.GetNextCharNB
				bcs .98

				cmp #'='
				bne .98

				jsr KW.GetIntExp
				bcs .99

				jsr CODE.LDVARDDRI

				ldx #RT.IntSet.ID
				jsr CODE.JSRRT			set var = START value

				>LDYA L.ACOS.KW
				jsr CORE.LookupSkip
				bcs .98

				cpx #KWID.TO
				bne .98
*--------------------------------------
				jsr KW.PushCodePtr2CCS	NEXT will JMP back here
*--------------------------------------
				jsr CODE.LDVARDDRI

				ldx #RT.IntGet.ID
				jsr CODE.JSRRT			get var value on stack

				jsr KW.GetIntExp		get exp2 on stack
				bcs .99

				ldx #FPU.iNE			var value = exp 2 ?
				jsr CODE.FPUCALL

				jsr CODE.TESTTRUE

				jsr KW.FalseJMP2CCS		if false, exit after NEXT

				>LDYA L.ACOS.KW
				jsr CORE.Lookup
				bcs .98

				cpx #KWID.STEP
				bne .1

				lda #4
				jsr CORE.SkipA			skip "STEP"

				jsr KW.GetIntExp		get exp3 value on stack
				bcs .99

				bra .2

.1				ldy #1					push 1 on stack
				ldx #0
				jsr CODE.PUSHYXI

.2				ldy VAR.ADDR			push Address to update by NEXT
				ldx VAR.ADDR+1
				jsr CODE.PUSHYXI

				clc
				lda #KWID.FOR
				jmp KW.PushA2CCS

.97				lda #E.TMISMATCH
				sec
				rts

.98				lda #E.CSYN
				sec
.99				rts
*--------------------------------------
KW.NEXT			ldy pCCS
				bmi .98

				lda (pdata),y
				cmp #KWID.FOR
				bne .98

				jsr CODE.PULLYX			pull var address from stack

				ldx #RT.IntGet.ID		will set VAR.ADDR
				jsr CODE.JSRRT			get var value on stack

				ldx #FPU.iADD			new value = value + STEP (on stack)
				jsr CODE.FPUCALL

				ldx #RT.IntUpd.ID
				jsr CODE.JSRRT			set var = new value

				ldy pCCS

				iny						pull JMP FALSE address
				lda (pData),y
				sta ZPPtr1

				iny
				lda (pData),y
				sta ZPPtr1+1

				lda	#$4C				JMP abs ...
				jsr CODE.EmitByte

				iny						...to loop address
				lda (pData),y
				jsr CODE.EmitByte

				iny
				lda (pData),y
				jsr CODE.EmitByte

				lda ZPCodeBufPtr		and finally update JMP FALSE
				sta (ZPPtr1)

				lda ZPCodeBufPtr+1
				ldy #1
				sta (ZPPtr1),y

				lda pCCS
				clc
				adc #5
				sta pCCS

				clc
				rts

.98				
KW.TO
KW.STEP			lda #E.NOFOR	
				sec
				rts
*--------------------------------------
KW.FREE
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.GET			jsr CORE.GetNextCharNB
				bcs .9

				jsr CORE.CreateOrGetVar
				bcs .99

				ldx #RT.GET.ID
				jsr CODE.JSRRT

				jsr CODE.LDVARDDRI

				ldx #RT.StrSet.ID
				clc
				jmp CODE.JSRRT

.9				lda #E.CSYN
				sec

.99				rts
*--------------------------------------
KW.GOSUB		lda #$20				JSR abs
				bra KW.GOTO1
*--------------------------------------
KW.GOTO			lda #$4C				JMP abs

KW.GOTO1		jsr CODE.EmitByte
				jsr CORE.GetNextCharNB
				bcs .90

				jsr CORE.GetLabel
				bcc .1

				jsr CORE.AddFWRef
				bcs .99

.1				lda VAR.ADDR
				jsr CODE.EmitByte
				lda VAR.ADDR+1
				clc
				jmp CODE.EmitByte

.90				lda #E.CSYN

.99				rts
*--------------------------------------
KW.HOME			ldx #8					CLRSCR
				jsr CODE.LDXI

				ldx #RT.OUTX.ID
				clc
				jmp CODE.JSRRT
*--------------------------------------
* IF exp THEN st1 ELSE st2
*--------------------------------------
KW.IF			jsr EXP.Eval
				bcs .99

				lda EXP.TYPE
				bne .98

				jsr CODE.TESTTRUE

				jsr KW.FalseJMP2CCS

				lda #KWID.IF

				clc
				jmp KW.PushA2CCS

.98				lda #E.TMISMATCH
				sec
.99				rts
*--------------------------------------
KW.ENDIF		sec
				.HS 90					BCC
*--------------------------------------
KW.ELSE			clc

				ldy pCCS
				bmi .9

				lda (pData),y
				eor #KWID.IF
				bne .9

				iny
				lda (pData),y
				sta ZPPtr1

				iny
				lda (pData),y
				sta ZPPtr1+1			ZPPtr1 = JMP if FALSE

				bcs .5					ENDIF

				lda	#$4C				JMP abs
				jsr CODE.EmitByte

				ldy pCCS
				iny

				lda ZPCodeBufPtr
				sta (pData),y
				iny
				lda ZPCodeBufPtr+1
				sta (pData),y

				lda ZPCodeBufPtr
				clc
				adc #2
				sta ZPCodeBufPtr
				bcc .1

				inc ZPCodeBufPtr+1

.1				lda ZPCodeBufPtr
				sta (ZPPtr1)

				lda ZPCodeBufPtr+1
				ldy #1
				sta (ZPPtr1),y

				clc
				rts

.5				lda ZPCodeBufPtr
				sta (ZPPtr1)

				ldy #1
				lda ZPCodeBufPtr+1
				sta (ZPPtr1),y

				lda pCCS
				clc
				adc #3
				sta pCCS

				clc
				rts

.9				lda #E.NOIF
				sec
				rts
*--------------------------------------
KW.INFO
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.INPUT		stz hIn					Defaut to Keyboard

				jsr CORE.GetNextCharNB
				bcs .9

				cmp #'"'
				bne .5

				jsr EXP.CreateStrConst
				bcs .99

				ldx #RT.StrOut.ID
				jsr CODE.JSRRT

.5				jsr CORE.CreateOrGetVar
				bcs .99

				ldx #RT.INPUT.ID
				jsr CODE.JSRRT

				jsr CODE.LDVARDDRI

				ldx #RT.StrSet.ID
				clc
				jmp CODE.JSRRT

.9				lda #E.CSYN
				sec

.99				rts
*--------------------------------------
KW.KILL
KW.LINK
KW.LOG
KW.MARK
KW.MODEM
KW.MOVE
KW.MSG

				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.NIBBLE
KW.NOT
KW.ON
KW.NOCAR		lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.OPEN
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.POKE
KW.POP
KW.POSITION
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.PRINT		stz ZPPtr2				put ending CR
				stz hOut				Default to screen

				jsr CORE.GetCharNB
				bcs .8

.11				cmp #'\'
				bne .13

.12				ldx #RT.OUTCRLF.ID
				jsr CODE.JSRRT
				bra .72

.13				jsr CORE.IsEndInst
				bcs .8

				jsr CORE.IsKW
				bcc .8

				stz ZPPtr2				put ending CR

				jsr EXP.Eval
				bcs .99

				lda EXP.TYPE
				beq .6

				ldx #RT.StrOut.ID
				bra .7

.6				ldx #RT.IntOut.ID
.7				jsr CODE.JSRRT
*--------------------------------------
				jsr CORE.GetCharNB
				bcs .8

.70				cmp #'\'
				beq .12

				jsr CORE.IsEndInst
				bcs .8

				jsr CORE.IsKW
				bcc .8

				lda (ZPInputBufPtr)
				cmp #','
				bne .71

				tax
				jsr CODE.PutChar

				bra .72					go skip

.71				cmp #';'
				bne .90

				ror ZPPtr2				suppress ending CR

.72				jsr CORE.GetNextCharNB	skip "/", ";" or ","
				bcc .11

.8				bit ZPPtr2
				bmi .80

				ldx #RT.OUTCRLF.ID
				jsr CODE.JSRRT

.80				clc
				rts

.90				lda #E.CSYN
				sec
.99				rts
*--------------------------------------
KW.PUBLIC
KW.PUSH
KW.RAM
KW.RAM2
KW.READ
KW.READY
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.RETURN
* TODO : check context

KW.END			lda #$60				RTS

				clc
				jmp CODE.EmitByte
*--------------------------------------
KW.REWIND
KW.RIPCO
KW.SET
KW.SETINT
KW.TEXT
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.THEN			ldy pCCS
				lda (pData),y
				eor #KWID.IF
				bne .9

				clc
				rts

.9				lda #E.NOIF
				sec
				rts
*--------------------------------------
KW.TONE
KW.UPDATE
KW.USE
KW.WHENd
KW.WRITE
				lda #E.CSYN
				sec
				rts
*--------------------------------------
KW.GetIntExp	jsr CORE.GetNextCharNB
				bcs .98

				jsr EXP.Eval
				bcs .99

				lda EXP.TYPE
				beq .99

				lda #E.TMISMATCH
				sec
				rts

.98				lda #E.CSYN
*				sec
.99				rts
*--------------------------------------
KW.PushA2CCS	ldy pCCS

				dey
				sta (pData),y

				sty pCCS
				rts
*--------------------------------------
KW.FalseJMP2CCS	jsr KW.PushCodePtr2CCS

				lda ZPCodeBufPtr
				clc
				adc #2
				sta ZPCodeBufPtr
				bcc .8

				inc ZPCodeBufPtr+1

.8				rts
*--------------------------------------
KW.PushCodePtr2CCS
				ldy pCCS

				dey
				lda ZPCodeBufPtr+1
				sta (pData),y

				dey
				lda ZPCodeBufPtr
				sta (pData),y

				sty pCCS
				rts
*--------------------------------------
MAN
SAVE usr/src/bin/acos.s.kw
LOAD usr/src/bin/acos.s
ASM