Saved six more bytes ;-)

cpu/6502/net/cs8900a.S

@@ -73,8 +73,6 @@ fixup:	.byte	fixup02-fixup01, fixup03-fixup02, fixup04-fixup03
 	.byte	fixup14-fixup13, fixup15-fixup14, fixup16-fixup15
 	.byte	fixup17-fixup16, fixup18-fixup17, fixup19-fixup18
 	.byte	fixup20-fixup19, fixup21-fixup20, fixup22-fixup21
-	.byte	fixup23-fixup22, fixup24-fixup23, fixup25-fixup24
-	.byte	fixup26-fixup25
 
 fixups	= * - fixup
 
@@ -112,7 +110,7 @@ init:
 	lda reg+1
 	sta (ptr),y
 	dey
-	
+
 	; Advance to next fixup location
 	inx
 	cpx #fixups
@@ -136,11 +134,10 @@ fixup02:sta isq+1
 	; Accept valid unicast + broadcast frames
 	; PACKETPP = $0104, PPDATA = $0D05
 	lda #$04
-	jsr packetpp_01
+	jsr packetpp_a1
 	lda #$05
 	ldx #$0D
-fixup03:sta ppdata
-fixup04:stx ppdata+1
+	jsr ppdata_ax
 
 	; Set MAC address
 	; PACKETPP = $0158, PPDATA = MAC[0], MAC[1]
@@ -148,11 +145,10 @@ fixup04:stx ppdata+1
 	; PACKETPP = $015C, PPDATA = MAC[4], MAC[5]
 	ldy #$58
 :	tya
-	jsr packetpp_01
+	jsr packetpp_a1
 	lda mac-$58,y
 	ldx mac-$58+1,y
-fixup05:sta ppdata
-fixup06:stx ppdata+1
+	jsr ppdata_ax
 	iny
 	iny
 	cpy #$58+6
@@ -161,11 +157,10 @@ fixup06:stx ppdata+1
 	; Turn on transmission and reception of frames
 	; PACKETPP = $0112, PPDATA = $00D3
 	lda #$12
-	jsr packetpp_01
+	jsr packetpp_a1
 	lda #$D3
 	ldx #$00
-fixup07:sta ppdata
-fixup08:stx ppdata+1
+	jsr ppdata_ax
 	rts
 
 ;---------------------------------------------------------------------
@@ -175,11 +170,11 @@ poll:
 	; are any valid unicast frames avaliable
 	; PACKETPP = $0124, PPDATA & $0D00 ?
 	lda #$24
-	jsr packetpp_01
-fixup09:lda ppdata+1
+	jsr packetpp_a1
+fixup03:lda ppdata+1
 	and #$0D
 	bne :+
-	
+
 	; No frame ready
 	tax
 	rts
@@ -190,13 +185,13 @@ fixup09:lda ppdata+1
 	; Read receiver event and discard it
 	; RXTXREG
 :
-fixup10:ldx rxtxreg+1
-fixup11:lda rxtxreg
-  
+fixup04:ldx rxtxreg+1
+fixup05:lda rxtxreg
+
 	; Read frame length
 	; cnt = len = RXTXREG
-fixup12:ldx rxtxreg+1
-fixup13:lda rxtxreg
+fixup06:ldx rxtxreg+1
+fixup07:lda rxtxreg
 	sta len
 	stx len+1
 	sta cnt
@@ -223,10 +218,10 @@ fixup13:lda rxtxreg
 	; Read bytes into buffer
 :	jsr adjustptr
 :
-fixup14:lda rxtxreg
+fixup08:lda rxtxreg
 	sta (ptr),y
 	iny
-fixup15:lda rxtxreg+1
+fixup09:lda rxtxreg+1
 	sta (ptr),y
 	iny
 	bne :-
@@ -249,12 +244,12 @@ send:
 	; Transmit command
 	lda #$C9
 	ldx #$00
-fixup16:sta txcmd
-fixup17:stx txcmd+1
+fixup10:sta txcmd
+fixup11:stx txcmd+1
 	lda cnt
 	ldx cnt+1
-fixup18:sta txlen
-fixup19:stx txlen+1
+fixup12:sta txlen
+fixup13:stx txlen+1
 
 	; Adjust odd frame length
 	jsr adjustcnt
@@ -265,8 +260,8 @@ fixup19:stx txlen+1
 	; Check for avaliable buffer space
 	; PACKETPP = $0138, PPDATA & $0100 ?
 :	lda #$38
-	jsr packetpp_01
-fixup20:lda ppdata+1
+	jsr packetpp_a1
+fixup14:lda ppdata+1
 	and #$01
 	bne :+
 
@@ -284,10 +279,10 @@ fixup20:lda ppdata+1
 	; Write bytes from buffer
 :	jsr adjustptr
 :	lda (ptr),y
-fixup21:sta rxtxreg
+fixup15:sta rxtxreg
 	iny
 	lda (ptr),y
-fixup22:sta rxtxreg+1
+fixup16:sta rxtxreg+1
 	iny
 	bne :-
 	inc ptr+1
@@ -302,10 +297,17 @@ exit:
 
 ;---------------------------------------------------------------------
 
-packetpp_01:
+packetpp_a1:
 	ldx #$01
-fixup23:sta packetpp
-fixup24:stx packetpp+1
+fixup17:sta packetpp
+fixup18:stx packetpp+1
+	rts
+
+;---------------------------------------------------------------------
+
+ppdata_ax:
+fixup19:sta ppdata
+fixup20:stx ppdata+1
 	rts
 
 ;---------------------------------------------------------------------
@@ -313,10 +315,10 @@ fixup24:stx packetpp+1
 skipframe:
 	; PACKETPP = $0102, PPDATA = PPDATA | $0040
 	lda #$02
-	jsr packetpp_01
-fixup25:lda ppdata
+	jsr packetpp_a1
+fixup21:lda ppdata
 	ora #$40
-fixup26:sta ppdata
+fixup22:sta ppdata
 	rts
 
 ;---------------------------------------------------------------------