Add a command to return to bootldr

Source/Apps/reboot.asm

@@ -0,0 +1,18 @@
+;===============================================================================
+;
+; REBOOT - Execute HBIOS reset to restart to boot loader.
+;
+;===============================================================================
+;
+BID_BOOT	.EQU	$00
+HB_BNKCALL	.EQU	$FFF9
+
+			.org	$100
+		
+			LD		A,BID_BOOT		; BOOT BANK
+			LD		HL,0			; ADDRESS ZERO
+			CALL	HB_BNKCALL		; DOES NOT RETURN	
+			HALT
+			
+			.end
+