diff --git a/src/mame/skeleton/tvcobrasd.cpp b/src/mame/skeleton/tvcobrasd.cpp
index 0428e16c685..941eb498ea4 100644
--- a/src/mame/skeleton/tvcobrasd.cpp
+++ b/src/mame/skeleton/tvcobrasd.cpp
@@ -34,7 +34,35 @@ Manual, pics and some more info can be found at https://www.recreativas.org/cobr
  |____________________________________________________________________________________|
 
 There's another PCB (same connectors, fully compatible) with almost the same layout
-and components, but replacing the sound OKI M6376 with a Winbond WF19054 (AY-3-8910A clone).
+and components, but replacing the sound OKI M6376 with a Winbond WF19054 (AY-3-8910A clone):
+
+ FLE/V25-2
+  ________________________________________________________________________________
+ |  ······  ·····  ······   ··········                                           |
+ |                                                                               |
+ | __________    __________   __________   __________                            |
+ ||MAX232CPE|   |4116R-001|  |ULN2803A_|  |4116R-001|           TDA2003          |
+ |                                                      __________               |__
+ |                            ___________              |ULN2803A_|                __|
+ |                           |DM74LS273N|               __________                __|
+ |               ___________  ___________  __________  |SN74LS273N                __|
+ |              |SN74LS244N| |PALCE16V8H| |SN74LS244N|  __________   __________   __|
+ | ___________   ___________         _______________   |SN74LS244N  |4116R-001|   __|
+ ||SN74LS14N_|  |PALCE16V8H|        | EPROM        |    __________                __|
+ | ___________                      |______________|   |SN74LS244N                __|
+ ||CD4011BCN_|    ______________     _______________    __________   __________   __|
+ | ____          | NEC V25     |     |CY62256L-70PC|   |DM74LS273N| |4116R-001|   __|
+ |PCF8583P       | D70320L-8   |     |_____________|    __________   __________   __|
+ |  Xtal         |             |                       |DM74LS273N| |ULN2803A_|   __|
+ |  S833         |             |                                     __________   __|
+ |               |_____________|                                    |ULN2803A_|   __|
+ |                        Xtal   _________  _________   _______________     ____  __|
+ |                   16.000 MHz  |_DIPSx8_| |_DIPSx8_| |WF19054       |    |RESET __|
+ |    BATT        __________    __________             |______________|     ____  __|
+ |               74HCT7007B1   74HCT7007B1                                 |TEST |
+ |   __________                                                                  |
+ |  |MAX691CPE|                    ::::::::::::        :::::::::::::::::::       |
+ |_______________________________________________________________________________|
 
 */