Merge pull request #419 from oliverschmidt/master
Saved six more bytes ;-)
This commit is contained in:
Oliver Schmidt
commit
59c28bc32b
1 changed files with 38 additions and 36 deletions
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@ -73,8 +73,6 @@ fixup: .byte fixup02-fixup01, fixup03-fixup02, fixup04-fixup03
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.byte fixup14-fixup13, fixup15-fixup14, fixup16-fixup15
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.byte fixup17-fixup16, fixup18-fixup17, fixup19-fixup18
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.byte fixup20-fixup19, fixup21-fixup20, fixup22-fixup21
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.byte fixup23-fixup22, fixup24-fixup23, fixup25-fixup24
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.byte fixup26-fixup25
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fixups = * - fixup
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@ -112,7 +110,7 @@ init:
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lda reg+1
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sta (ptr),y
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dey
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; Advance to next fixup location
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inx
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cpx #fixups
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@ -136,11 +134,10 @@ fixup02:sta isq+1
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; Accept valid unicast + broadcast frames
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; PACKETPP = $0104, PPDATA = $0D05
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lda #$04
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jsr packetpp_01
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jsr packetpp_a1
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lda #$05
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ldx #$0D
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fixup03:sta ppdata
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fixup04:stx ppdata+1
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jsr ppdata_ax
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; Set MAC address
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; PACKETPP = $0158, PPDATA = MAC[0], MAC[1]
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@ -148,11 +145,10 @@ fixup04:stx ppdata+1
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; PACKETPP = $015C, PPDATA = MAC[4], MAC[5]
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ldy #$58
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: tya
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jsr packetpp_01
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jsr packetpp_a1
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lda mac-$58,y
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ldx mac-$58+1,y
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fixup05:sta ppdata
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fixup06:stx ppdata+1
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jsr ppdata_ax
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iny
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iny
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cpy #$58+6
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@ -161,11 +157,10 @@ fixup06:stx ppdata+1
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; Turn on transmission and reception of frames
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; PACKETPP = $0112, PPDATA = $00D3
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lda #$12
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jsr packetpp_01
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jsr packetpp_a1
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lda #$D3
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ldx #$00
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fixup07:sta ppdata
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fixup08:stx ppdata+1
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jsr ppdata_ax
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rts
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;---------------------------------------------------------------------
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@ -175,11 +170,11 @@ poll:
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; are any valid unicast frames avaliable
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; PACKETPP = $0124, PPDATA & $0D00 ?
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lda #$24
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jsr packetpp_01
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fixup09:lda ppdata+1
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jsr packetpp_a1
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fixup03:lda ppdata+1
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and #$0D
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bne :+
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; No frame ready
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tax
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rts
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@ -190,13 +185,13 @@ fixup09:lda ppdata+1
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; Read receiver event and discard it
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; RXTXREG
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:
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fixup10:ldx rxtxreg+1
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fixup11:lda rxtxreg
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fixup04:ldx rxtxreg+1
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fixup05:lda rxtxreg
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; Read frame length
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; cnt = len = RXTXREG
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fixup12:ldx rxtxreg+1
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fixup13:lda rxtxreg
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fixup06:ldx rxtxreg+1
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fixup07:lda rxtxreg
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sta len
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stx len+1
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sta cnt
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@ -223,10 +218,10 @@ fixup13:lda rxtxreg
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; Read bytes into buffer
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: jsr adjustptr
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:
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fixup14:lda rxtxreg
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fixup08:lda rxtxreg
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sta (ptr),y
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iny
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fixup15:lda rxtxreg+1
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fixup09:lda rxtxreg+1
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sta (ptr),y
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iny
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bne :-
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@ -249,12 +244,12 @@ send:
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; Transmit command
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lda #$C9
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ldx #$00
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fixup16:sta txcmd
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fixup17:stx txcmd+1
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fixup10:sta txcmd
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fixup11:stx txcmd+1
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lda cnt
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ldx cnt+1
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fixup18:sta txlen
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fixup19:stx txlen+1
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fixup12:sta txlen
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fixup13:stx txlen+1
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; Adjust odd frame length
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jsr adjustcnt
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@ -265,8 +260,8 @@ fixup19:stx txlen+1
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; Check for avaliable buffer space
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; PACKETPP = $0138, PPDATA & $0100 ?
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: lda #$38
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jsr packetpp_01
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fixup20:lda ppdata+1
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jsr packetpp_a1
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fixup14:lda ppdata+1
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and #$01
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bne :+
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@ -284,10 +279,10 @@ fixup20:lda ppdata+1
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; Write bytes from buffer
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: jsr adjustptr
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: lda (ptr),y
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fixup21:sta rxtxreg
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fixup15:sta rxtxreg
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iny
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lda (ptr),y
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fixup22:sta rxtxreg+1
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fixup16:sta rxtxreg+1
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iny
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bne :-
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inc ptr+1
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@ -302,10 +297,17 @@ exit:
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;---------------------------------------------------------------------
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packetpp_01:
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packetpp_a1:
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ldx #$01
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fixup23:sta packetpp
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fixup24:stx packetpp+1
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fixup17:sta packetpp
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fixup18:stx packetpp+1
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rts
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;---------------------------------------------------------------------
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ppdata_ax:
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fixup19:sta ppdata
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fixup20:stx ppdata+1
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rts
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;---------------------------------------------------------------------
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@ -313,10 +315,10 @@ fixup24:stx packetpp+1
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skipframe:
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; PACKETPP = $0102, PPDATA = PPDATA | $0040
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lda #$02
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jsr packetpp_01
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fixup25:lda ppdata
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jsr packetpp_a1
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fixup21:lda ppdata
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ora #$40
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fixup26:sta ppdata
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fixup22:sta ppdata
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rts
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;---------------------------------------------------------------------
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