fidel*: add note about playability (nw)

src/mame/drivers/fidel6502.cpp

@@ -4,6 +4,11 @@
 /******************************************************************************
 
     Fidelity Electronics 6502 based board driver
+    
+    NOTE: MAME doesn't include a generalized implementation for boardpieces yet,
+    greatly affecting user playability of emulated electronic board games.
+    As workaround for the chess games, use an external chess GUI on the side,
+    such as Arena(in editmode).
 
     TODO:
     - verify cpu speed and rom labels where unknown
@@ -364,7 +369,7 @@ I/O is via TTL, see source code for more info
 
 // internal artwork
 #include "fidel_chesster.lh" // clickable
-#include "fidel_csc.lh" // clickable
+#include "fidel_csc.lh" // clickable, with preliminary boardpieces simulation
 #include "fidel_eag.lh" // clickable
 #include "fidel_eas.lh" // clickable
 #include "fidel_ex.lh" // clickable

src/mame/drivers/fidel68k.cpp

@@ -5,6 +5,11 @@
 
     Fidelity Electronics 68000 based board driver
 
+    NOTE: MAME doesn't include a generalized implementation for boardpieces yet,
+    greatly affecting user playability of emulated electronic board games.
+    As workaround for the chess games, use an external chess GUI on the side,
+    such as Arena(in editmode).
+
     TODO:
     - how does dual-CPU work?
     - IRQ level/timing is unknown

src/mame/drivers/fidelz80.cpp

@@ -7,6 +7,11 @@
     for 6502 based boards, see drivers/fidel6502.cpp
     for 68000 based boards, see drivers/fidel68k.cpp
 
+    NOTE: MAME doesn't include a generalized implementation for boardpieces yet,
+    greatly affecting user playability of emulated electronic board games.
+    As workaround for the chess games, use an external chess GUI on the side,
+    such as Arena(in editmode).
+
     TODO:
     - Figure out why it says the first speech line twice; it shouldn't?
       It sometimes does this on Voice Sensory Chess Challenger real hardware.
@@ -14,8 +19,6 @@
       "I I am Fidelity's chess challenger", instead.
     - VBRC card scanner
 
-    Chess pieces are required, but theoretically blindfold chess is possible.
-    Chessboard artwork is provided for boards with pressure/magnet sensors.
     Read the official manual(s) on how to play.
 
     Keypad legend:

src/mame/drivers/novag6502.cpp

@@ -4,6 +4,11 @@
 
     Novag generic 6502 based chess computer driver
 
+    NOTE: MAME doesn't include a generalized implementation for boardpieces yet,
+    greatly affecting user playability of emulated electronic board games.
+    As workaround for the chess games, use an external chess GUI on the side,
+    such as Arena(in editmode).
+
     TODO:
     - move other Novag sets here when applicable