Fixed arrow keys on the Amstrads and indentation of the Olivetti machine code.

src/machine/m_amstrad.c

@@ -2116,8 +2116,7 @@ kbd_adddata(uint16_t val)
 static void
 kbd_adddata_ex(uint16_t val)
 {
-    kbd_adddata(val);
-    // kbd_adddata_process(val, kbd_adddata);
+    kbd_adddata_process(val, kbd_adddata);
 }
 
 
@@ -2500,6 +2499,7 @@ machine_amstrad_init(const machine_t *model, int type)
     keyboard_set_table(scancode_xt);
     keyboard_send = kbd_adddata_ex;
     keyboard_scan = 1;
+    keyboard_set_is_amstrad(1);
 
     io_sethandler(0x0078, 2,
 		  ms_read, NULL, NULL, ms_write, NULL, NULL, ams);