improved VIC II initialization

c64/kernal/screen/screen.s

@@ -0,0 +1,19 @@
+
+//
+// Official Kernal routine, described in:
+//
+// - [RG64] C64 Programmer's Reference Guide   - page 295
+// - [CM64] Compute's Mapping the Commodore 64 - page 215
+//
+// CPU registers that has to be preserved (see [RG64]): .A
+//
+
+SCREEN:
+
+	// There are only 2 sane ways to implement this routine,
+	// I hope this one is different than what Commodore picked :)
+
+	ldy #25 // 25 columns
+	ldx #40 // 40 rows
+
+	rts