A2osX/LIB/LIBTCPIP.S.HST.txt

PR#3
PREFIX /A2OSX.SRC
LOMEM $900
INC 1
AUTO 6
				.LIST OFF	
*--------------------------------------
HST.GetByName	>PULLW ZPPtrDNS
				>PULLW ZPPtrIP
				jsr HST.ScanIP
				bcc .9
				jmp DNS.QUERY.I
.9				rts
*--------------------------------------
HST.GetByAddr	>PULLW ZPPtrIP
				>PULLW ZPPtrDNS
				
				
				sec
				rts
*--------------------------------------
HST.ScanIP		stz HST.IP
				
				lda (ZPPtrDNS)
				beq .9
				
				ldy #0
				
.1				ldx #0
				stx HST.DecStr
				
.2				tya
				cmp (ZPPtrDNS)
				beq .4
				
				iny
				lda (ZPPtrDNS),y
				cmp #'.'
				beq .3
				
				cmp #'0'
				bcc .9
				cmp #'9'+1
				bcs .9
				cpx #3
				beq .9
				inx
				sta HST.DecStr,x
				bra .2
				
.3				stx HST.DecStr
				phy
				jsr HST.Dec2Hex
				ply
				bcc .1
				rts
				
.4				txa
				beq .5
				
				stx HST.DecStr
				jsr HST.Dec2Hex
				bcs .9
				
.5				ldx HST.IP
				cpx #4
				bne .9
				
				ldy #3
.6				lda HST.IP,x
				sta (ZPPtrIP),y
				dex
				dey
				bpl .6
				clc
				rts
				
.9				sec
				rts
*--------------------------------------
HST.Dec2Hex		ldy HST.DecStr
				beq .9
				
				ldx HST.IP
				cpx #4
				beq .9
				inx
				
				lda HST.DecStr+1
				and #$0f
				sta HST.IP,x
				
				ldy #1
				
.1				cpy HST.DecStr
				beq .8
				iny
				lda HST.IP,x
				asl HST.IP,x
				bcs .9
				asl HST.IP,x
				bcs .9
				adc HST.IP,x
				bcs .9
				asl
				bcs .9
				sta HST.IP,x
				lda HST.DecStr,y
				and #$0f
				adc HST.IP,x
				sta HST.IP,x
				bcc .1
.9				sec
				rts
				
.8				stx HST.IP
				clc
				rts
*--------------------------------------
MAN
SAVE LIB/LIBTCPIP.S.HST
LOAD LIB/LIBTCPIP.S
ASM