diff --git a/libsrc/apple2/ser/a2.ssc.s b/libsrc/apple2/ser/a2.ssc.s
index 6ad9c3825..c2b0bf321 100644
--- a/libsrc/apple2/ser/a2.ssc.s
+++ b/libsrc/apple2/ser/a2.ssc.s
@@ -427,12 +427,13 @@ Done:   rts
 
 TryToSend:
         sta     tmp1            ; Remember tryHard flag
-Again:  lda     SendFreeCnt
+NextByte:
+        lda     SendFreeCnt
         cmp     #$FF
         beq     Quit            ; Bail out
 
         ; Check for flow stopped
-        lda     Stopped
+Again:  lda     Stopped
         bne     Quit            ; Bail out
 
         ; Check that ACIA is ready to send
@@ -449,4 +450,4 @@ Send:   ldy     SendHead
         sta     ACIA_DATA,x
         inc     SendHead
         inc     SendFreeCnt
-        jmp     Again
+        jmp     NextByte
diff --git a/libsrc/atmos/ser/atmos-acia.s b/libsrc/atmos/ser/atmos-acia.s
index f679125d1..ed5386471 100644
--- a/libsrc/atmos/ser/atmos-acia.s
+++ b/libsrc/atmos/ser/atmos-acia.s
@@ -352,12 +352,13 @@ Done:   rts
 
 TryToSend:
         sta     tmp1            ; Remember tryHard flag
-Again:  lda     SendFreeCnt
+NextByte:
+        lda     SendFreeCnt
         cmp     #$FF
         beq     Quit            ; Bail out
 
         ; Check for flow stopped
-        lda     Stopped
+Again:  lda     Stopped
         bne     Quit            ; Bail out
 
         ; Check that ACIA is ready to send
@@ -374,4 +375,4 @@ Send:   ldy     SendHead
         sta     ACIA::DATA
         inc     SendHead
         inc     SendFreeCnt
-        jmp     Again
+        jmp     NextByte
diff --git a/libsrc/c128/ser/c128-swlink.s b/libsrc/c128/ser/c128-swlink.s
index 7d36eb5bc..57b5ea3b2 100644
--- a/libsrc/c128/ser/c128-swlink.s
+++ b/libsrc/c128/ser/c128-swlink.s
@@ -466,25 +466,25 @@ NmiHandler:
         sta     tmp1            ; Remember tryHard flag
 @L0:    lda     SendFreeCnt
         cmp     #$ff
-        beq     @L3             ; Bail out
+        beq     @L2             ; Bail out
 
 ; Check for flow stopped
 
 @L1:    lda     Stopped
-        bne     @L3             ; Bail out
+        bne     @L2             ; Bail out
 
 ; Check that swiftlink is ready to send
 
-@L2:    lda     ACIA_STATUS
+        lda     ACIA_STATUS
         and     #$10
-        bne     @L4
+        bne     @L3
         bit     tmp1            ;keep trying if must try hard
-        bmi     @L0
-@L3:    rts
+        bmi     @L1
+@L2:    rts
 
 ; Send byte and try again
 
-@L4:    ldx     SendHead
+@L3:    ldx     SendHead
         lda     SendBuf,x
         sta     ACIA_DATA
         inc     SendHead
diff --git a/libsrc/c64/ser/c64-swlink.s b/libsrc/c64/ser/c64-swlink.s
index 81c9916a6..8c8b8bf39 100644
--- a/libsrc/c64/ser/c64-swlink.s
+++ b/libsrc/c64/ser/c64-swlink.s
@@ -443,25 +443,25 @@ NmiHandler:
         sta     tmp1            ; Remember tryHard flag
 @L0:    lda     SendFreeCnt
         cmp     #$ff
-        beq     @L3             ; Bail out
+        beq     @L2             ; Bail out
 
 ; Check for flow stopped
 
 @L1:    lda     Stopped
-        bne     @L3             ; Bail out
+        bne     @L2             ; Bail out
 
 ; Check that swiftlink is ready to send
 
-@L2:    lda     ACIA_STATUS
+        lda     ACIA_STATUS
         and     #$10
-        bne     @L4
+        bne     @L3
         bit     tmp1            ;keep trying if must try hard
-        bmi     @L0
-@L3:    rts
+        bmi     @L1
+@L2:    rts
 
 ; Send byte and try again
 
-@L4:    ldx     SendHead
+@L3:    ldx     SendHead
         lda     SendBuf,x
         sta     ACIA_DATA
         inc     SendHead
diff --git a/libsrc/cbm510/ser/cbm510-std.s b/libsrc/cbm510/ser/cbm510-std.s
index cc58c1233..34fe02d0f 100644
--- a/libsrc/cbm510/ser/cbm510-std.s
+++ b/libsrc/cbm510/ser/cbm510-std.s
@@ -395,31 +395,31 @@ SER_IRQ:
         sta     IndReg          ; Switch to the system bank
 @L0:    lda     SendFreeCnt
         cmp     #$ff
-        beq     @L3             ; Bail out
+        beq     @L2             ; Bail out
 
 ; Check for flow stopped
 
 @L1:    lda     Stopped
-        bne     @L3             ; Bail out
+        bne     @L2             ; Bail out
 
 ; Check that swiftlink is ready to send
 
-@L2:    ldy     #ACIA::STATUS
+        ldy     #ACIA::STATUS
         lda     (acia),y
         and     #$10
-        bne     @L4
+        bne     @L3
         bit     tmp1            ; Keep trying if must try hard
-        bmi     @L0
+        bmi     @L1
 
 ; Switch back the bank and return
 
-@L3:    lda     ExecReg
+@L2:    lda     ExecReg
         sta     IndReg
         rts
 
 ; Send byte and try again
 
-@L4:    ldx     SendHead
+@L3:    ldx     SendHead
         lda     SendBuf,x
         ldy     #ACIA::DATA
         sta     (acia),y
diff --git a/libsrc/cbm610/ser/cbm610-std.s b/libsrc/cbm610/ser/cbm610-std.s
index f7ddde935..c241d5908 100644
--- a/libsrc/cbm610/ser/cbm610-std.s
+++ b/libsrc/cbm610/ser/cbm610-std.s
@@ -395,31 +395,31 @@ SER_IRQ:
         sta     IndReg          ; Switch to the system bank
 @L0:    lda     SendFreeCnt
         cmp     #$ff
-        beq     @L3             ; Bail out
+        beq     @L2             ; Bail out
 
 ; Check for flow stopped
 
 @L1:    lda     Stopped
-        bne     @L3             ; Bail out
+        bne     @L2             ; Bail out
 
 ; Check that swiftlink is ready to send
 
-@L2:    ldy     #ACIA::STATUS
+       ldy     #ACIA::STATUS
         lda     (acia),y
         and     #$10
-        bne     @L4
+        bne     @L3
         bit     tmp1            ; Keep trying if must try hard
-        bmi     @L0
+        bmi     @L1
 
 ; Switch back the bank and return
 
-@L3:    lda     ExecReg
+@L2:    lda     ExecReg
         sta     IndReg
         rts
 
 ; Send byte and try again
 
-@L4:    ldx     SendHead
+@L3:    ldx     SendHead
         lda     SendBuf,x
         ldy     #ACIA::DATA
         sta     (acia),y
diff --git a/libsrc/plus4/ser/plus4-stdser.s b/libsrc/plus4/ser/plus4-stdser.s
index fbdc61b2e..5c4c550e6 100644
--- a/libsrc/plus4/ser/plus4-stdser.s
+++ b/libsrc/plus4/ser/plus4-stdser.s
@@ -387,25 +387,25 @@ SER_IRQ:
         sta     tmp1            ; Remember tryHard flag
 @L0:    lda     SendFreeCnt
         cmp     #$ff
-        beq     @L3             ; Bail out
+        beq     @L2             ; Bail out
 
 ; Check for flow stopped
 
 @L1:    lda     Stopped
-        bne     @L3             ; Bail out
+        bne     @L2             ; Bail out
 
 ; Check that swiftlink is ready to send
 
-@L2:    lda     ACIA_STATUS
+        lda     ACIA_STATUS
         and     #$10
-        bne     @L4
+        bne     @L3
         bit     tmp1            ;keep trying if must try hard
-        bmi     @L0
-@L3:    rts
+        bmi     @L1
+@L2:    rts
 
 ; Send byte and try again
 
-@L4:    ldx     SendHead
+@L3:    ldx     SendHead
         lda     SendBuf,x
         sta     ACIA_DATA
         inc     SendHead