Add overlay upload script for real HW

ovly-upload-helper.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+if [ $# -eq 0 ]
+  then
+    echo "PSX Overlay Upload helper script
+    
+Upload a binary and the corresponding executable to a real PSX memory, via unirom + serial cable.
+
+This script is dependant on NOTpsxserial being available on your system : https://github.com/JonathanDotCel/NOTPSXSerial
+Edit the $NOPS value to reflect the executable path on your system, e.g : 
+    \$NOPS = '/blah/nops'
+Usage : ./ovly_upload_helper.sh bin_load_adress bin_filename psx_exe_name com_port
+    
+    - bin_load_adress, eg : 0x80010000 (This should correspond to the 'load_all_overlays_here' adress in your .map file. )
+    - bin_filename , eg : Overlay.lvl0
+    - psx_exe_name, e.g : main.ps-exe
+    - com_port, e.g : /dev/ttyUSB0, COM1
+"
+else
+# Path to nops executable
+NOPS="nops"
+# $1 = bin loading address ( see .map's "load_all_overlays_here" address )
+# $2 = bin file
+# $3 = ps-exe file
+# $4 = comport 
+$NOPS /debug $4
+$NOPS /fast /bin $1 $2 $4
+$NOPS /fast /exe $3 $4
+$NOPS /slow $4
+fi