NEW
  AUTO 3,1
				.LIST OFF
*--------------------------------------
RT.NOT			lda (pStack)
				inc
				ora (pStack)
				beq .1

				lda #1
	
.1				dec
				sta (pStack)
				>PUSHA
				rts
*--------------------------------------
RT.StrAdd		>DEBUG

				
				inc pStack
				inc pStack
				clc
				rts
*--------------------------------------
RT.StrSet		>PUSHB hStrings
				txa
				>PUSHA
				tya
				>PUSHA

				ldy #4
				lda (pStack),y
				>PUSHA
				lda (pStack),y
				>PUSHA
				>SYSCALL StrVSet
				inc pStack
				inc pStack
				rts
*--------------------------------------
RT.StrGet		lda #0
				sta (ZPStrBuf)

				>PUSHB hStrings
				txa
				>PUSHA
				tya
				>PUSHA
				>PUSHW ZPStrBuf
				>SYSCALL StrVGet
				>PUSHW ZPStrBuf
				rts
*--------------------------------------
RT.StrOut		ldy #S.PS.hStdOut
				lda (pPS),y
				>PUSHA
				ldy #2
				lda (pStack),y
				>PUSHA
				lda (pStack),y
				>PUSHA
				>PUSHBI 0
				>SYSCALL fprintf
				inc pStack
				inc pStack
				rts
*--------------------------------------
RT.IntSet		sty ZPADDR
				stx ZPADDR+1
				
				>PULLA
				sta (ZPADDR)
				>PULLA
				ldy #1
				sta (ZPADDR),y
				rts
*--------------------------------------
RT.IntGet		sty ZPADDR
				stx ZPADDR+1
				
				ldy #1
				lda (ZPADDR),y
				>PUSHA
				lda (ZPADDR)
				>PUSHA
				rts
*--------------------------------------
RT.IntOut		>PUSHW L.MSG.INT16
				ldy #3
				lda (pStack),y
				>PUSHA
				lda (pStack),y
				>PUSHA
				>PUSHBI 2
				>SYSCALL PrintF
				inc pStack
				inc pStack
				rts
*--------------------------------------
RT.DATEd		ldx #0
				bra RT.TIMEd.1
				
RT.TIMEd		ldx #2
	
RT.TIMEd.1		>PUSHW ZPStrBuf
				>PUSHW L.FMT.DATE,x
				>PUSHEA.G TimeBuf
				
				>PUSHEA.G TimeBuf
				>SYSCALL Time
				
				>SYSCALL StrFTime
				>PUSHW ZPStrBuf
				rts
*--------------------------------------
RT.GET			jsr RT.GetChar
				sta (ZPStrBuf)

				ldy #1
				
				lda #0
				sta (ZPStrBuf),y
				
				bra RT.INPUT.8
*--------------------------------------
RT.INPUT		lda #0
				sta (ZPStrBuf)
				
				stz ZPPtr1
				
				ldx #0					OUT.ELW
				jsr RT.OUTX
				
.1				jsr RT.GetChar
				bcs RT.INPUT.9
				
				ldy ZPPtr1

				cmp #C.SPACE
				bcs .7
				
				cmp #C.CR
				bne .2
				
				lda #0
				sta (ZPStrBuf),y
				
				ldx #4					OUT.CRLF
				jsr RT.OUTX
				
				bra RT.INPUT.8
				
.2				cmp #C.BS
				bne .1
				
				cpy #0
				beq .1
					
				ldx 6					OUT.BSSPBS
				jsr RT.OUTX

				dec ZPPtr1
				bra .1
				
.7				cpy #255
				bcs .1
				
				sta (ZPStrBuf),y
				>SYSCALL PutChar
				inc ZPPtr1
				bra .1
				
RT.INPUT.8		ldx #2					OUT.DLW
				jsr RT.OUTX
				
				>PUSHW ZPStrBuf
				clc

RT.INPUT.9		rts
*--------------------------------------
RT.LEFTd		>PULLB ZPPtr2			cnt
				inc pStack
				>PULLW ZPPtr1			src str

				ldy #0

.1				lda (ZPPtr1),y
				sta (ZPStrBuf),y
				beq .8

				iny
				cpy ZPPtr2
				bne .1

				lda #0
				sta (ZPStrBuf),y

.8				>PUSHW ZPStrBuf
				clc
				rts
*--------------------------------------
RT.LEN			>PULLYA					str
				>SYSCALL strlen
				>PUSHYA
				rts
*--------------------------------------
RT.MIDd			>PULLA 					len

				tax
				inc pStack
				>PULLB ZPPtr2			start
				inc pStack
				>PULLW ZPPtr1			src str
				
				ldy #0

.1				lda (ZPPtr1),y
				beq .8

				iny
				cpy ZPPtr2
				bne .1

				tya
				clc
				adc ZPPtr1
				sta ZPPtr1
				bcc .2

				inc ZPPtr1+1

.2				ldy #0

.3				txa
				beq .8
				
				lda (ZPPtr1),y
				sta (ZPStrBuf),y
				beq .80
				
				iny
				dex
				bne .3
				
				txa

.8				sta (ZPStrBuf),y

.80				>PUSHW ZPStrBuf
				clc
				rts
*--------------------------------------
RT.RIGHTd		>PULLB ZPPtr2			cnt
				inc pStack
				>PULLW ZPPtr1			src str
				
				ldy #$ff

.1				iny
				lda (ZPPtr1),y
				bne .1
				
				tya
				sec
				sbc ZPPtr2
				bcc .8
				beq .8
				
				clc
				adc ZPPtr1
				sta ZPPtr1
				bcc .2
				
				inc ZPPtr1+1
				
.2				ldy #$ff
				
.3				iny
				lda (ZPPtr1),y
				sta (ZPStrBuf),y
				bne .3
				
.8				>PUSHW ZPStrBuf
				clc
				rts				
*--------------------------------------
RT.STRd			>PULLYA					int
				pha
				>PUSHW ZPStrBuf
				>PUSHW L.MSG.INT16
				pla
				>PUSHYA
				>PUSHBI 2
				>SYSCALL sprintf
				>PUSHW ZPStrBuf
				rts
*--------------------------------------
RT.VAL			>PULLYA					str
				>SYSCALL atoi
				>PUSHYA
				rts
*--------------------------------------
RT.OUTCRLF		ldx #4					CRLF
RT.OUTX			ldy #S.PS.hStdOut
				lda (pPS),y
				>PUSHA
				>PUSHW L.OUT,x
				>SYSCALL FPutS
				rts
*--------------------------------------
* TODO: handle lost conn CS and remap VT100 ESC codes
*--------------------------------------
RT.GetChar		>SYSCALL GetChar
				cmp #C.CR
				bne .8
				
				>SYSCALL GetChar		LF
				
				lda #C.CR
				
.8				clc
				rts
*--------------------------------------
MAN
SAVE usr/src/bin/acos.s.rt
LOAD usr/src/bin/acos.s
ASM