diff --git a/modules/pcjs/lib/cpu.js b/modules/pcjs/lib/cpu.js
index 628b2354c..64abe4ef7 100644
--- a/modules/pcjs/lib/cpu.js
+++ b/modules/pcjs/lib/cpu.js
@@ -399,7 +399,7 @@ CPU.prototype.updateChecksum = function(nCycles)
          * Get a 32-bit summation of the current CPU state and add it to our running 32-bit checksum
          */
         var fDisplay = false;
-        this.aCounts.nChecksum = (this.aCounts.nChecksum + this.getChecksum()) | 0;
+        this.aCounts.nChecksum = (this.aCounts.nChecksum + this.getChecksum())|0;
         this.aCounts.nCyclesChecksumNext -= nCycles;
         if (this.aCounts.nCyclesChecksumNext <= 0) {
             this.aCounts.nCyclesChecksumNext += this.aCounts.nCyclesChecksumInterval;
diff --git a/modules/pcjs/lib/x86cpu.js b/modules/pcjs/lib/x86cpu.js
index b9dc6eee3..1abdae922 100644
--- a/modules/pcjs/lib/x86cpu.js
+++ b/modules/pcjs/lib/x86cpu.js
@@ -1468,8 +1468,8 @@ X86CPU.prototype.resetSizes = function()
  */
 X86CPU.prototype.getChecksum = function()
 {
-    var sum = (this.regEAX + this.regEBX + this.regECX + this.regEDX + this.getSP() + this.regEBP + this.regESI + this.regEDI) | 0;
-    sum = (sum + this.getIP() + this.getCS() + this.getDS() + this.getSS() + this.getES() + this.getPS()) | 0;
+    var sum = (this.regEAX + this.regEBX + this.regECX + this.regEDX + this.getSP() + this.regEBP + this.regESI + this.regEDI)|0;
+    sum = (sum + this.getIP() + this.getCS() + this.getDS() + this.getSS() + this.getES() + this.getPS())|0;
     return sum;
 };
 
diff --git a/tests/pc/vga/L25-1.ASM b/tests/pc/vga/L25-1.ASM
index 1a0517bd4..c43ee7ddf 100644
--- a/tests/pc/vga/L25-1.ASM
+++ b/tests/pc/vga/L25-1.ASM
@@ -50,9 +50,9 @@ start	proc	near
 ;
 ; Set driver to use the 8x8 font.
 ;
-	mov	ah,11h	 ;VGA BIOS character generator function,
-	mov	al,30h	 ; return info subfunction
-	mov	bh,3;get 8x8 font pointer
+	mov	ah,11h		;VGA BIOS character generator function,
+	mov	al,30h		; return info subfunction
+	mov	bh,3		;get 8x8 font pointer
 	int	10h
 	call	SelectFont
 ;
@@ -129,12 +129,12 @@ DrawChar	proc	near
 	pop	ds
 	mul	di	;calculate offset of start of row
 	push	di	;set aside screen width
-	mov	di,cx	 ;set aside the column
-	and	cl,0111b    ;keep only the column in-byte address
+	mov	di,cx	;set aside the column
+	and	cl,0111b;keep only the column in-byte address
 	shr	di,1
 	shr	di,1
-	shr	di,1	   ;divide column by 8 to make a byte address
-	add	di,ax	 ;and point to byte
+	shr	di,1	;divide column by 8 to make a byte address
+	add	di,ax	;and point to byte
 ;
 ; Calculate font address of character.
 ;
@@ -142,7 +142,7 @@ DrawChar	proc	near
 	shl	bx,1	;assumes 8 bytes per character; use
 	shl	bx,1	; a multiply otherwise
 	shl	bx,1	;offset in font of character
-	add	si,bx	 ;offset in font segment of character
+	add	si,bx	;offset in font segment of character
 ;
 ; Set up the GC rotation.
 ;
diff --git a/tests/pc/vga/L26-1.ASM b/tests/pc/vga/L26-1.ASM
index 790eaf10b..a78610e82 100644
--- a/tests/pc/vga/L26-1.ASM
+++ b/tests/pc/vga/L26-1.ASM
@@ -22,7 +22,7 @@ SC_MAP_MASK	equ	2	;SC map mask register index
 GC_INDEX	equ	3ceh	;GC index register
 GC_SET_RESET	equ	0	;GC set/reset register index
 GC_ENABLE_SET_RESET equ 1	;GC enable set/reset register index
-GC_ROTATE	equ	3	;GC data rotate/logical function
+GC_ROTATE	equ	3	;GC data rint 3otate/logical function
 				; register index
 GC_MODE		equ	5	;GC Mode register
 GC_BIT_MASK	equ	8	;GC bit mask register index