diff --git a/gidubba.asm b/gidubba.asm
index 967163c..a898caa 100644
--- a/gidubba.asm
+++ b/gidubba.asm
@@ -189,10 +189,7 @@ getarg: load    r0, arg1
         breq    r0, r1, cmderr
         xor     r2, r2
         xor     r2, r0
-        shl     r2
-        shl     r2
-        shl     r2
-        shl     r2
+        shl     r2, 4
         ;Second digit
         load    r0, arg1 + 1
         cleq    r0, r0, hex2n
@@ -208,10 +205,7 @@ getarg: load    r0, arg1
         breq    r0, r1, cmderr
         xor     r2, r2
         xor     r2, r0
-        shl     r2
-        shl     r2
-        shl     r2
-        shl     r2
+        shl     r2, 4
         ;Fourth digit
         load    r0, arg1 + 3
         cleq    r0, r0, hex2n
@@ -229,10 +223,7 @@ getarg: load    r0, arg1
         breq    r0, r1, cmderr
         xor     r2, r2
         xor     r2, r0
-        shl     r2
-        shl     r2
-        shl     r2
-        shl     r2
+        shl     r2, 4
         ;Second digit
         load    r0, arg2 + 1
         cleq    r0, r0, hex2n
@@ -985,11 +976,11 @@ sumlop: xor     r1, r1
         xor     r1, r1
         xor     r1, r2
         ;Shift the carry
-        shl     r2
+        shl     r2, 1
 
         ;Check for and store overflow if any
         ;Check
-        rol     r1
+        rol     r1, 1
         breq    r1, r2, nvrflw
         ;Store
         load    r1, #1
@@ -1291,10 +1282,7 @@ bt2hex: xor     r2, r2
         xor     r2, r1
 
         ;Convert the high nibble to a digit
-        ror     r0
-        ror     r0
-        ror     r0
-        ror     r0
+        ror     r0, 4
         cleq    r0, r0, n2hex
 
         ;Load the digit of the low nibble to r1
diff --git a/readme.md b/readme.md
index 8e99b8a..9153ae9 100644
--- a/readme.md
+++ b/readme.md
@@ -1,5 +1,5 @@
-Gidubba v1.0
-============
+Gidubba v1.1-dev
+================
 
 Gidubba (Sumerian for 'stylus') is a simple line editor for the
 Thingamajig computer architecture. Its git repository can be found at