Added quick 'n dirty "temp" variable corruption workaround (how could…

… I have overlooked this potential issue for so long??)

src/lib_quicksetup.inc.asm

@@ -21,6 +21,15 @@ VBlank:
 	phk					; set Data Bank = Program Bank
 	plb
 
+	lda temp+6				; push temp variables on the stack (used in scrolling routines)
+	pha
+	lda temp+4
+	pha
+	lda temp+2
+	pha
+	lda temp
+	pha
+
 	sep #A_8BIT				; A = 8 bit
 
 	jsr DoScrolling
@@ -107,6 +116,15 @@ VBlank:
 
 	rep #AXY_8BIT				; A/X/Y = 16 bit
 
+	pla					; restore temp variables
+	sta temp
+	pla
+	sta temp+2
+	pla
+	sta temp+4
+	pla
+	sta temp+6
+
 	ply					; restore 16 bit registers
 	plx
 	pla