Make the program wait for space key instead of joystick to start

host/src/mainloop.s

@@ -13,12 +13,23 @@ mainsetup:
 .endrep
 .endif
 
-.ifndef EMULATOR_PREVIEW
 @waitstart: ;; Wait until joystick 2 has been pulled down to start the program
 	dec $d020
-	lda $dc00
-	and #$02
-	bne @waitstart
+
+	lda #%11111111
+	sta $dc02
+	lda #%00000000
+	sta $dc03
+
+	lda #%01111111
+	sta $dc00
+
+	lda $dc01
+	eor #$ff
+	beq @waitstart
+
+	lda #%00000000
+	sta $dc02
 
 	jsr setup_loader
 	jmp endsetup
@@ -34,7 +45,6 @@ mainsetup:
 
 	jsr maybe_download_userprog
 	beq @trying
-.endif
 
 endsetup:
 	DOWNLOAD_TIMER	=	$FFFF