diff --git a/src/mame/drivers/prodigy.cpp b/src/mame/drivers/prodigy.cpp
index 0ce8f2f4313..8ffc003f7af 100644
--- a/src/mame/drivers/prodigy.cpp
+++ b/src/mame/drivers/prodigy.cpp
@@ -6,6 +6,31 @@
 
     TODO: Everything
 
+    +-------------------------------------------------------------------------------------+
+    |LEDS--------------------------------------------+        +-----------------+         |
+    | | |              o o o o o o o o COLCN         |        |                 |         |
+    | V |                                            |        | 4 char BCD LED  |         |
+    | O | 8                                          |        +-----------------+         |
+    |   |                                      ROWCN |        |||||||||||||||||||  ____   |
+    | O | 7                                         o|+----------------------+    /    \  |
+    |   |                                           o||  VIA                 |   ( beep ) |
+    | O | 6                                         o|| R6522                |    \____/  |
+    |   |                                           o|+----------------------+            |
+    | O | 5                                         o|+----------------------+            |
+    |   |                                           o||  CPU                 |            |
+    | O | 4         8 x 8 button matrix             o|| R6502-13             |   +--+  __ |
+    |   |                                           o|+----------------------+   |74| PWR||
+    | O | 3                                         o|   o    o  +-------------+ |LS| SW >|
+    |   |                                            | +=======+ |  ROM        | |14|  __||
+    | O | 2                                          | | 2MHz  | | R2912       | +--+     |
+    |   |                                            | |  XTAL | +-------------+     +--+ |
+    | O | 1                                          |++-------+ +-------------+     |74| |
+    |   |                                            || 74145N | |  RAM        |     |LS| |
+    |   |   A     B    C    D    E    F     G    H   |+--------+ | M58725P     |     |00| |
+    |   +--------------------------------------------+           +-------------+     +--+ |
+    |LEDS-> O     O    O    O    O    O     O    O                 OOOOOOOOOOO KPDCN      |
+    +-------------------------------------------------------------------------------------+
+
 ******************************************************************************/
 
 #include "emu.h"