Kernel 0.9.1 : SHELL, CSH style scripting.....(wip)

BIN/CAT.S.txt

@@ -40,31 +40,18 @@ L.MSG.CTRLCHAR	.DA MSG.CTRLCHAR
 L.ASCII			.DA ASCII
 				.DA 0
 *--------------------------------------
-CS.INIT			ldy #S.PS.ARGC
+CS.INIT							
-				lda (pPs),y
+.1				>INC.G ArgCount
-				beq .99
-				
-				>STA.G ArgCount
-				
-.1				>LDA.G ArgCount
-				dec
-				bmi .5
-				
-				sta (pData),y
-				
 				>SYSCALL GetArg.A
+				bcs .7
+				
 				>STYA ZPPtr1
 				
-				ldy #1
+				lda (ZPPtr1)
-				lda (ZPPtr1),y
 				cmp #'-'
 				bne .4
 				
-				lda (ZPPtr1)
+				ldy #1 
-				cmp #2
-				bne .4
-				
-				iny 
 				lda (ZPPtr1),y
 
 				ldx OptionList
@@ -85,12 +72,10 @@ CS.INIT			ldy #S.PS.ARGC
 				sta (pData),y
 				bra .1
 				
-.4				>LDA.G FileCount
+.4				>INC.G FileCount
-				inc
-				sta (pData),y
 				bra .1					scan for any other args
 				
-.5				>LDA.G FileCount
+.7				>LDA.G FileCount
 				beq .99
 				
 				>LDYAI 256
@@ -128,16 +113,13 @@ CS.RUN			>SYSCALL GetChar
 				>LDA.G hFILE
 				bne .2
 				
-.1				>LDA.G ArgIndex
+.1				>INC.G ArgIndex
-				inc
-				sta (pData),y
 				>SYSCALL GetArg.A
 				bcs .99					No more arg...the end!
 				
 				>STYA ZPPtr1
 				
-				ldy #1
+				lda (ZPPtr1)
-				lda (ZPPtr1),y
 				cmp #'-'
 				beq .1					An option, skip...
 				

SBIN/GETTY.S.txt

@@ -87,7 +87,8 @@ CS.RUN			>SYSCALL Sleep
 				>SYSCALL GetChar
 				bcs CS.RUN
 				
-.11				jsr PRINTA2
+.11				
+*				jsr PRINTA2
 				>SYSCALL Sleep
 				>SYSCALL GetChar
 				
@@ -115,7 +116,7 @@ CS.RUN.LOOP
 				>SYSCALL GetChar
 				bcs .4
 
-				jsr PRINTA
+*				jsr PRINTA
 				
 				cmp #IAC
 				beq CS.RUN.IACMODE
@@ -144,22 +145,22 @@ CS.RUN.IACMODE	>SYSCALL Sleep			Wait for IAC VERB (or SB)
 				bcs CS.RUN.IACMODE
 
 				>STA.G IAC.VERB
-				jsr PRINTA
+*				jsr PRINTA
 				
 .1				>SYSCALL Sleep			Wait for IAC OPT
 				>SYSCALL GetChar
 				bcs .1
 				
 				>STA.G IAC.OPT
-				jsr PRINTA
+*				jsr PRINTA
 				
 				>LDA.G IAC.VERB
 				cmp #SB
 				beq CS.RUN.IACSB
 *--------------------------------------			
 CS.RUN.IACVERB	
-				lda #'.'
+*				lda #'.'
-				>SYSCALL PutChar.A
+*				>SYSCALL PutChar.A
 				jmp CS.RUN.LOOP							
 *--------------------------------------
 CS.RUN.IACSB  				
@@ -169,7 +170,7 @@ CS.RUN.IACSB
 
 				>STA.G IAC.SB
 				
-				jsr PRINTA
+*				jsr PRINTA
 								
 				lda #0
 				sta (pData)				reset IAC.SB.DATA
@@ -182,7 +183,7 @@ CS.RUN.IACSB
 				beq .4					end of DATA, go wait SE
 				
 				pha
-				jsr PRINTA
+*				jsr PRINTA
 				
 				ldy #IAC.SB.DATA-1
 				
@@ -216,8 +217,9 @@ CS.RUN.IACSB
 				>PUSHW L.ENV.TERM
 				>SYSCALL SetEnv
 				
-.8				lda #':'
+.8
-				>SYSCALL PutChar.A
+*				lda #':'
+*				>SYSCALL PutChar.A
 				jmp CS.RUN.LOOP
 *--------------------------------------
 CS.DOEVENT		lda (pEvent)

SBIN/SHELL.S.CSH.txt

@@ -69,7 +69,7 @@ CSH.Run			lda #0
 				
 				jsr CSH.Pop				was expected, get stacked Cmd...
 				tax
-				jmp (J.CSHCMDS.END,x) 
+				jmp (J.CSH.KEYWORDS.END,x) 
 				
 .1				cmp #$0D
 				bne .2
@@ -87,14 +87,14 @@ CSH.Run			lda #0
 				
 				bra .9					error, todo : PREOPS ++ --.....
 				
-.3				>LDYA L.CSHCMDS
+.3				>LDYA L.CSH.KEYWORDS
 				jsr CSH.IsKeyword
 				bcs .4					not an internal CSH keyword....
 				
 				txa	
 				>STA.G CSH.CmdSave
 				
-				jmp (J.CSHCMDS,x)		
+				jmp (J.CSH.KEYWORDS,x)		
 
 .4				jsr CSH.GetVar			Y=Ptr To Value
 				bcs .5
@@ -113,7 +113,7 @@ CSH.Run			lda #0
 				ply
 				bcs .9
 				
-				jsr CSH.SetVarValueAtY
+				jsr CSH.SetVarValue
 				bcs .9
 				cmp #';'
 				bne .99
@@ -126,28 +126,31 @@ CSH.Run			lda #0
 
 .5				
 
-
 				jsr CSH.RestorePtr		Restore ptr to get full cmd line to execute
 				
-				jsr CSH.GetCharNB
+				ldy #$0
 				
-				ldy #0
+.6				lda (ZPCSHBufPtr),y
+				beq .7
 				
-.6				cmp #13
+				cmp #13
 				beq .7
 				sta (ZPCMDBuf),y
 				iny
 				cpy #CmdLine.MAX
-				beq .8
+				bne .6
+				bra .99					Line Too long !!!
 				
-				jsr CSH.GetNextChar
+.7				tya
-				bcc .6
+				clc
-				bra .8
+				adc ZPCSHBufPtr
-				
+				sta ZPCSHBufPtr
-.7				jsr CSH.GetNextCharNB	Skip CR
+				bcc .8
+				inc ZPCSHBufPtr+1
 				
 .8				lda #0
 				sta (ZPCMDBuf),y
+				
 				tya
 				>STA.G CmdBuflen
 				lda #$ff
@@ -181,16 +184,12 @@ CSH.Quit		>LDA.G CSH.hBuf
 				
 .8				rts
 *--------------------------------------
-CSH.SavePtr		phy
+CSH.SavePtr		>LDYA ZPCSHBufPtr
-				>LDYA ZPCSHBufPtr
 				>STYA.G CSH.BufPtrSave
-				ply
 				rts
 *--------------------------------------
-CSH.RestorePtr	phy
+CSH.RestorePtr	>LDYA.G CSH.BufPtrSave
-				>LDYA.G CSH.BufPtrSave
 				>STYA ZPCSHBufPtr
-				ply
 				rts
 *--------------------------------------
 CSH.IsKeyword	>STYA ZPPtr1
@@ -245,6 +244,69 @@ CSH.IsKeyword	>STYA ZPPtr1
 				sec
 				rts
 *--------------------------------------
+CSH.CHAR		lda #CSH.TYPE.CHAR
+				bra CSH.TYPE
+CSH.INT			lda #CSH.TYPE.INT
+				bra CSH.TYPE
+CSH.LONG		lda #CSH.TYPE.LONG
+				bra CSH.TYPE
+CSH.FLOAT		lda #CSH.TYPE.FLOAT
+
+CSH.TYPE		>STA.G CSH.ACCT
+				
+				jsr CSH.GetChar
+				bcs .9
+				cmp #' '
+				bne .9
+				
+				jsr CSH.GetNextCharNB
+				bcs .9
+
+				jsr CSH.IsLetter
+				bcs .9
+
+				jsr CSH.GetVar			Already exists ?
+				bcc .90
+				
+				jsr CSH.AddVar			No, add with undefined value...
+				bcs .99
+				
+				jsr CSH.GetCharNB
+				bcs .9
+				cmp #';'
+				beq .8					end of declaration, no value...
+				
+				cmp #'='
+				bne .9
+				
+				jsr CSH.GetNextCharNB
+				bcs .9
+				
+				phy						Save Ptr To Value
+				jsr CSH.ExpEval
+				ply
+
+				bcs .9
+				
+				jsr CSH.SetVarValue		Update value to this var
+				
+				jsr CSH.GetChar
+				bcs .9
+				cmp #';'
+				bne .9
+				
+.8				jsr CSH.GetNextCharNB	Skip ;
+				clc
+				rts
+
+.90				lda #CSH.E.DUP
+				sec
+				rts
+							
+.9				lda #CSH.E.SYNTAX
+				sec
+.99				rts
+*--------------------------------------
 CSH.WHILE
 CSH.IF			jsr CSH.GetCharNB
 				bcs .9
@@ -333,78 +395,18 @@ CSH.WHILE.END	jsr CSH.Pop
 				clc
 				rts
 *--------------------------------------
+CSH.ELSE
+CSH.DO
+CSH.FOR
+CSH.SWITCH
+CSH.CASE
 CSH.BREAK
-*--------------------------------------
 CSH.CONTINUE
 
 				lda #CSH.E.SYNTAX
 				sec
 				rts
 *--------------------------------------
-CSH.CHAR		lda #CSH.TYPE.CHAR
-				bra CSH.TYPE
-CSH.INT			lda #CSH.TYPE.INT
-				bra CSH.TYPE
-CSH.LONG		lda #CSH.TYPE.LONG
-				bra CSH.TYPE
-CSH.FLOAT		lda #CSH.TYPE.FLOAT
-
-CSH.TYPE		>STA.G CSH.ACCT
-				
-				jsr CSH.GetChar
-				bcs .9
-				cmp #' '
-				bne .9
-				
-				jsr CSH.GetNextCharNB
-				bcs .9
-
-				jsr CSH.IsLetter
-				bcs .9
-
-				jsr CSH.GetVar			Already exists ?
-				bcc .90
-				
-				jsr CSH.AddVar			No, add with undefined value...
-				bcs .99
-*										Y=Ptr in DATA to Value
-				
-				jsr CSH.GetCharNB
-				bcs .9
-				cmp #';'
-				beq .8					end of declaration, no value...
-				
-				cmp #'='
-				bne .9
-				
-				jsr CSH.GetNextCharNB
-				bcs .9
-				
-				phy						Save Ptr To Value
-				jsr CSH.ExpEval
-				ply
-
-				bcs .9
-				
-				jsr CSH.SetVarValueAtY	Update value to this var
-				
-				jsr CSH.GetChar
-				bcs .9
-				cmp #';'
-				bne .9
-				
-.8				jsr CSH.GetNextCharNB	Skip ;
-				clc
-				rts
-
-.90				lda #CSH.E.DUP
-				sec
-				rts
-							
-.9				lda #CSH.E.SYNTAX
-				sec
-.99				rts
-*--------------------------------------
 CSH.ExpEval		jsr CSH.ZeroACC
 				
 				jsr CSH.GetCharNB
@@ -449,7 +451,7 @@ CSH.GetNumInACC	>LDA.G CSH.ACCT
 				>PUSHWI ZPCSHBufPtr
 				>PUSHW ZPCSHBufPtr
 				>PUSHEA.G CSH.ACC
-				>DEBUG
+				
 				>SYSCALL StrToL
 				rts	
 *--------------------------------------
@@ -467,13 +469,14 @@ CSH.ZeroACC		lda #0
 * Vars...
 *--------------------------------------
 CSH.AddVar		jsr CSH.GetIdentLen
+				
 				sec
-				>ADC.G CSH.SymbolsPtr
+				>ADC.G CSH.SymbolsPtr	Enough room to store this symbol ?
 				
 				bcs .99
 				
-				adc #1					OFS
+				adc #1					Add One Byte for storing Ptr to DATA
-				bcs .99
+				bcs .99					Out of Symbols space
 				
 				>LDA.G CSH.DataPtr
 				pha
@@ -482,58 +485,44 @@ CSH.AddVar		jsr CSH.GetIdentLen
 				tax
 				sec						+1 for Type
 				adc CSH.TSIZE,x
-				bcs .98					Out of memory
+				bcs .98					Out of Data Space
 
 				>LDA.G CSH.SymbolsPtr
-				tay
+				pha
+
+				jsr CSH.GetIdentLen
+				
+				ply
+				sta (ZPCSHSymbols),y
+				iny
 				
 				jsr CSH.GetChar
 				
-.1				sta (ZPCSHSymbols),y
+.1				sta (ZPCSHSymbols),y	Store this symbol....
 				iny
 				jsr CSH.GetNextChar
 				
 				jsr CSH.IsLetterOrDigit
 				bcc .1
 				
-				pla						Get Back Data OFS				
+				pla						Get Back Data Ptr				
 				pha
+				
 				sta (ZPCSHSymbols),y
 				iny
 				
 				tya
-				>STA.G CSH.SymbolsPtr
+				>STA.G CSH.SymbolsPtr	Mark new end of Symbols
 				
-				>LEA.G CSH.ACCT
+				pla						Get again Data Ptr
-				>STYA ZPPtr1			ACCT/ACC in ZPPtr1
-				
-				ply						Get Back Data OFS again
-				phy
-				
-				lda (ZPPtr1)
-				sta (ZPCSHSymbols),y	Add Type to Data
-				iny
-
-				tax
-				lda CSH.TSIZE,x			A = byte count to store
-				
-				tax
-				
-.2				inc ZPPtr1
-				bne .3
-				inc ZPPtr1+1
-				
-.3				lda (ZPPtr1)
-				sta (ZPCSHData),y
-				iny
-				dex
-				bne .2
-				
-				tya
-				>STA.G CSH.DataPtr
-				
-				ply						Exit with Y=Data Offset
 				clc
+				adc ZPCSHData
+				sta ZPCSHValue
+				lda #0
+				adc ZPCSHData+1
+				sta ZPCSHValue+1
+
+*				clc
 				rts
 							
 .98				pla
@@ -541,8 +530,19 @@ CSH.AddVar		jsr CSH.GetIdentLen
 				sec
 				rts
 *--------------------------------------
-CSH.SetVarValueAtY
+CSH.SetVarValue	>LDA.G CSH.ACCT
+				tax
+				lda CSH.TSIZE,x
+				tax
+				
+				>LDA.G CSH.ACCT
+				tay
 
+.1				lda (pData),y
+				sta (ZPCSHValue),y
+				iny
+				dex
+				bpl .1					+1 for ACCT
 				clc
 				rts
 *--------------------------------------
@@ -550,8 +550,8 @@ CSH.GetVar		>LDYA ZPCSHSymbols
 				>STYA ZPPtr1
 				
 				jsr CSH.GetIdentLen
-				phy
+				pha
-				
+
 .1				lda (ZPPtr1)
 				beq .9
 				
@@ -570,16 +570,36 @@ CSH.GetVar		>LDYA ZPCSHSymbols
 				tya
 				bne .2
 				
+				lda (ZPPtr1)
+				inc
+				tay
+				lda (ZPPtr1),y			Get Ptr to DATA
+				clc
+				adc ZPCSHData
+				sta ZPCSHValue
+				lda #0
+				adc ZPCSHData+1
+				sta ZPCSHValue+1
+				
 				pla
-				
+
-				jsr CSH.VarSkipName
+				clc
-				
+				adc ZPCSHBufPtr
+				sta ZPCSHBufPtr
+				bcc .8
+				inc ZPCSHBufPtr+1
+
 				clc
 .8				rts
 							
-.3				jsr CSH.VarSkipName
+.3				lda (ZPPtr1)
+				sec
+				adc ZPPtr1
+				sta ZPPtr1
+				bcc .4
+				inc ZPPtr1+1
 				
-.5				inc ZPPtr1				Skip Pointer to TYPE/DATA
+.4				inc ZPPtr1				Skip Pointer to TYPE/DATA
 				bne .1
 				inc ZPPtr1+1
 				bra .1
@@ -588,14 +608,6 @@ CSH.GetVar		>LDYA ZPCSHSymbols
 				sec
 				rts
 *--------------------------------------
-CSH.VarSkipName	lda (ZPPtr1)
-				sec
-				adc ZPPtr1
-				sta ZPPtr1
-				bcc .8
-				inc ZPPtr1+1
-.8				rts				
-*--------------------------------------
 * Stack
 *--------------------------------------
 CSH.Push		pha
@@ -658,7 +670,9 @@ CSH.GetIdentLen	ldy #0
 
 				jsr CSH.IsLetterOrDigit
 				bcc .1
-.8				rts
+				
+.8				tya
+				rts
 *--------------------------------------
 CSH.GetCharNB	jsr CSH.GetChar
 				bcs CSH.GetNextCharNB.RTS
@@ -737,7 +751,7 @@ CSH.ErrorMsg	>LDA.G CSH.hBuf
 				>STA.G CSH.LineNum
 				iny
 				>STA.G CSH.LineNum+1
-				
+
 .1				>LDYA ZPPtr1
 				>STYA ZPPtr2			Save actual line start
 				
@@ -775,12 +789,14 @@ CSH.ErrorMsg	>LDA.G CSH.hBuf
 				lda #$0A
 				>SYSCALL PutChar.A
 				
+				
+				
 				lda ZPCSHBufPtr
 				sec
 				sbc ZPPtr2
 				beq .8
 				tay
-				
+
 .7				phy
 				lda #'-'
 				>SYSCALL PutChar.A

SBIN/SHELL.S.txt

@@ -12,13 +12,13 @@ AUTO 6
 				.INB /A2OSX.BUILD/INC/A2OSX.I
 				.INB /A2OSX.BUILD/INC/MLI.ERR.I
 *--------------------------------------
-ZPPTR1			.EQ ZPBIN
+ZPPtr1			.EQ ZPBIN
-ZPPTR2			.EQ ZPBIN+2
+ZPPtr2			.EQ ZPBIN+2
 ZPCMDBuf		.EQ ZPBIN+4
-*ZPCSHBufBase	.EQ ZPBIN+6
+ZPCSHBufPtr		.EQ ZPBIN+6
-ZPCSHBufPtr		.EQ ZPBIN+8
+ZPCSHSymbols	.EQ ZPBIN+8
-ZPCSHSymbols	.EQ ZPBIN+10
+ZPCSHData		.EQ ZPBIN+10
-ZPCSHData		.EQ ZPBIN+12
+ZPCSHValue		.EQ ZPBIN+12
 ZPCSHStack		.EQ ZPBIN+14
 *--------------------------------------
 CmdLine.MAX		.EQ 255
@@ -83,16 +83,22 @@ J.INTCMDS		.DA Cmd.Exec.CD
 				.DA Cmd.Exec.SLEEP
 				.DA Cmd.Exec.STARTPROC
 				.DA Cmd.Exec.TIME
-L.CSHCMDS		.DA CSHCMDS
+L.CSH.KEYWORDS	.DA CSH.KEYWORDS
-J.CSHCMDS		.DA CSH.IF
+J.CSH.KEYWORDS	.DA CSH.CHAR
-				.DA CSH.WHILE
-				.DA CSH.BREAK
-				.DA CSH.CONTINUE
-				.DA CSH.CHAR
 				.DA CSH.INT
 				.DA CSH.LONG
 				.DA CSH.FLOAT
-J.CSHCMDS.END	.DA CSH.IF.END
+				.DA CSH.IF
+				.DA CSH.WHILE
+				.DA CSH.ELSE
+				.DA CSH.DO
+				.DA CSH.FOR
+				.DA CSH.SWITCH
+				.DA CSH.CASE
+				.DA CSH.BREAK
+				.DA CSH.CONTINUE
+J.CSH.KEYWORDS.END
+				.DA CSH.IF.END
 				.DA CSH.WHILE.END
 L.ERR.Codes		.DA ERR.Codes
 L.ERR.Messages	.DA ERR.Messages
@@ -470,16 +476,81 @@ INTCMDS			>CSTR "CD"
 				>CSTR "STARTPROC"
 				>CSTR "TIME"
 				.HS 00
-CSHCMDS			>PSTR "IF"
+*--------------------------------------
-				>PSTR "WHILE"
+* Pre Operators:  + - ! ~ ++ --
-				>PSTR "BREAK"
+*--------------------------------------
-				>PSTR "CONTINUE"
+CSH.PREOOPS		>PSTR "+"
-				>PSTR "CHAR"
+				>PSTR "-"
-				>PSTR "INT"
+				>PSTR "!"
-				>PSTR "LONG"
+				>PSTR "~"
-				>PSTR "FLOAT"
+*--------------------------------------
+* Post Operators: ++ -- 
+*--------------------------------------
+CSH.POSTOPS		>PSTR "++"
+				>PSTR "--"
+				.HS 00				
+*-- Binary ---- H to L prececence -----
+* Arithmetic Operators: * / %
+* Arithmetic Operators: + -
+* Shift Operators: << >>
+* Relational Operators: < > >= < >= == !=
+* Bitwise Operators: & | ^ ~
+* Logical Operators: && ||
+*--------------------------------------
+CSH.BOPS		>PSTR "+"
+				>PSTR "-"
+				>PSTR "*"
+				>PSTR "/"
+				>PSTR "%"
+				>PSTR "<<"
+				>PSTR ">>"
+				>PSTR "<"
+				>PSTR ">"
+				>PSTR ">="
+				>PSTR "<"
+				>PSTR ">="
+				>PSTR "=="
+				>PSTR "!="
+				>PSTR "&"
+				>PSTR "|"
+				>PSTR "^"
+				>PSTR "~"
+				>PSTR "&&"
+				>PSTR "||"
 				.HS 00
 *--------------------------------------
+* Assignment Operators: = += -= *= /= %= <<= >>= &= ^= |=
+*--------------------------------------
+CSH.AOPS		>PSTR "="
+				>PSTR "+="
+				>PSTR "-="
+				>PSTR "*="
+				>PSTR "/="
+				>PSTR "%="
+				>PSTR "<<="
+				>PSTR ">>="
+				>PSTR "&="
+				>PSTR "^="
+				>PSTR "!="
+				.HS 00
+*--------------------------------------
+* Reserved Keywords:
+*--------------------------------------
+CSH.KEYWORDS	>PSTR "char"
+				>PSTR "int"
+				>PSTR "long"
+				>PSTR "float"
+				>PSTR "if"
+				>PSTR "while"
+				>PSTR "else"
+				>PSTR "do"
+				>PSTR "for"
+				>PSTR "switch"
+				>PSTR "case"
+				.HS 00
+*--------------------------------------
+CSH.OPChars		>PSTR "!~+-*/%=&|^&<>"
+*--------------------------------------
 MSG.GREETINGS	>CSTR "\r\nA2osX-Shell 0.9.1\r\n\r\n"
 MSG.PROMPT		>CSTR "$ "
 MSG.ECHO		>CSTR ">%s\r\n"

SYS/KERNEL.S.STDLIB.txt

@@ -62,9 +62,9 @@ K.StrToL		sec						Signed
 K.StrToUL		clc						Unsigned
 				jsr PullPtr1Ptr2Ptr3
 				>PULLA					Base
+
 				jsr K.AToL.I
 				bcs K.StrToUL.rts
-				
 *				clc	
 			
 K.StrToUL.Exit	adc ZPPtr2
@@ -91,6 +91,7 @@ K.AToL			jsr PullPtr1Ptr2		C-String in Ptr2, Dst buffer in Ptr1
 K.AToL.I		jsr STDLIB.Dec2Hex
 				bcs .9
 				phy						Save Count processed 
+				
 				ldy #3
 
 .3				lda STDLIB.32,y
@@ -161,10 +162,10 @@ STDLIB.32.T10	ldx #3
 				dex
 				bpl .1
 
-				jsr STDLIB.32.ROL			STDLIB.32 * 2 -> STDLIB.32
+				jsr STDLIB.32.ROL		STDLIB.32 * 2 -> STDLIB.32
 				bcs .9					overflow!!!
 				
-				jsr STDLIB.32.ROL			STDLIB.32 * 4 -> STDLIB.32
+				jsr STDLIB.32.ROL		STDLIB.32 * 4 -> STDLIB.32
 				bcs .9					overflow!!!
 				
 				ldx #0
@@ -181,8 +182,8 @@ STDLIB.32.T10	ldx #3
 				
 				bcs .99					overflow!!!
 
-				jsr STDLIB.32.ROL			STDLIB.32 * 10 -> STDLIB.32
+				jsr STDLIB.32.ROL		STDLIB.32 * 10 -> STDLIB.32
-				bcs .99					overflow!!!
+				rts						if CS, overflow!!!
 				
 .9				pla						discard saved STDLIB.32
 				pla