diff --git a/src/mame/drivers/gcpinbal.c b/src/mame/drivers/gcpinbal.c
index 614bbca55c7..4c4c7f05096 100644
--- a/src/mame/drivers/gcpinbal.c
+++ b/src/mame/drivers/gcpinbal.c
@@ -15,11 +15,12 @@ Inputs get tested at $4aca2 on
 TODO
 ----
 
-Screen flipping support
-
-Understand role of bit 5 of IN1
-
-Eprom?
+ - Screen flipping support
+ - Understand role of bit 5 of IN1
+ - Hook up 93C46 EEPROM
+ - Hook up ES-8712
+ - Sort out the IOC commands for the M6585 & ES-8712
+ - Is SW3 actually used?
 
 BGMs (controlled by OKI MSM6585 sound chip)
   MSM6585: is an upgraded MSM5205 voice synth IC.
@@ -33,6 +34,41 @@ Stephh's notes (based on the game M68000 code and some tests) :
   - Reset the game while pressing START1 to enter the "test mode"
 
 
+ES-9209B
++-----------------------------------------------+
+|      M6585  U56  ES-8712                      |
+| VR1 640kHz  U55           +-------+           |
+|1056khz M6295              |ES 9207|           |
+|                 6116      |       |  AS7C256  |
+|                 6116      +-------+  AS7C256  |
+|J                                     AS7C256  |
+|A                            AS7C256  AS7C256  |
+|M  TSW1*               +-------+          U13* |
+|M   PAL          32MHz |ES-9303|          U11  |
+|A   PAL     68000P-16  +-------+               |
+|       62256  4.U46      +-------+      1.U10  |
+|       62256  3.U45      |ES-9208|             |
+|  93C46         U44*     +-------+        U6   |
+|              2.U43                            |
+|SW4* SW3 SW2 SW1  14.31818MHz   5864 5864 U1   |
++-----------------------------------------------+
+
+   CPU: TMP68HC000P-16
+ Sound: OKI M6295
+        OKI M6585
+        Ecxellent ES-8712
+   OSC: 32MHz, 14.31818MHz & 1056kHz, 640kHz resonators
+   RAM: Sony CXK5864BSP-10L 8K x 8bit high speed CMOS SRAM
+        Alliance AS7C256-20PC 32K x 8bit CMOS SRAM
+        Hitachi HM6116LK-70 2K x  8bit SRAM
+        Hitachi HM62256ALP-8 32K x 8bit CMOS SRAM
+EEPROM: 93C46 1K Serial EEPROM
+Custom: EXCELLENT SYSTEM ES-9208 347102 (QFP160)
+        EXCELLENT SYSTEM LTD. ES 9207 9343 T (QFP208)
+        ES-9303 EXCELLENT 9338 C001 (QFP120)
+
+* Denotes unpopulated components
+
 ***************************************************************************/
 
 #include "emu.h"
@@ -424,7 +460,7 @@ void gcpinbal_state::machine_reset()
 static MACHINE_CONFIG_START( gcpinbal, gcpinbal_state )
 
 	/* basic machine hardware */
-	MCFG_CPU_ADD("maincpu", M68000, 32000000/2) /* 16 MHz ? */
+	MCFG_CPU_ADD("maincpu", M68000, XTAL_32MHz/2) /* 16 MHz */
 	MCFG_CPU_PROGRAM_MAP(gcpinbal_map)
 	MCFG_CPU_VBLANK_INT_DRIVER("screen", gcpinbal_state,  gcpinbal_interrupt)
 
@@ -447,7 +483,7 @@ static MACHINE_CONFIG_START( gcpinbal, gcpinbal_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_OKIM6295_ADD("oki", 1056000, OKIM6295_PIN7_HIGH)
+	MCFG_OKIM6295_ADD("oki", XTAL_1_056MHz, OKIM6295_PIN7_HIGH)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
 
 	MCFG_SOUND_ADD("msm", MSM6585, XTAL_640kHz)
@@ -463,27 +499,27 @@ MACHINE_CONFIG_END
 ***************************************************************************/
 
 ROM_START( gcpinbal )
-	ROM_REGION( 0x200000, "maincpu", 0 )     /* 512k for 68000 program */
-	ROM_LOAD16_WORD_SWAP( "u43.2",  0x000000, 0x80000, CRC(d174bd7f) SHA1(0e6c17265e1400de941e3e2ca3be835aaaff6695) )
-	ROM_FILL            ( 0x80000,  0x080000, 0x0 )
-	ROM_LOAD16_WORD_SWAP( "u45.3",  0x100000, 0x80000, CRC(0511ad56) SHA1(e0602ece514126ce719ebc9de6649ebe907be904) )
-	ROM_LOAD16_WORD_SWAP( "u46.4",  0x180000, 0x80000, CRC(e0f3a1b4) SHA1(761dddf374a92c1a1e4a211ead215d5be461a082) )
+	ROM_REGION( 0x200000, "maincpu", 0 )  /* 512k for 68000 program */
+	ROM_LOAD16_WORD_SWAP( "2_excellent.u43",  0x000000, 0x80000, CRC(d174bd7f) SHA1(0e6c17265e1400de941e3e2ca3be835aaaff6695) ) /* Red line across label */
+	ROM_FILL            ( 0x80000,  0x080000, 0x0 ) /* unpopulated 27C4096 socket at U44 */
+	ROM_LOAD16_WORD_SWAP( "3_excellent.u45",  0x100000, 0x80000, CRC(0511ad56) SHA1(e0602ece514126ce719ebc9de6649ebe907be904) )
+	ROM_LOAD16_WORD_SWAP( "4_excellent.u46",  0x180000, 0x80000, CRC(e0f3a1b4) SHA1(761dddf374a92c1a1e4a211ead215d5be461a082) )
 
-	ROM_REGION( 0x200000, "gfx1", 0 )
-	ROM_LOAD( "u1",      0x000000, 0x100000, CRC(afa459bb) SHA1(7a7c64bcb80d71b8cf3fdd3209ef109997b6417c) ) /* BG0 (16 x 16) */
+	ROM_REGION( 0x200000, "gfx1", 0 )  /* BG0 (16 x 16) */
+	ROM_LOAD( "u1",      0x000000, 0x100000, CRC(afa459bb) SHA1(7a7c64bcb80d71b8cf3fdd3209ef109997b6417c) ) /* 23C8000 MASK ROMs */
 	ROM_LOAD( "u6",      0x100000, 0x100000, CRC(c3f024e5) SHA1(d197e2b715b154fc64ff9a61f8c6df111d6fd446) )
 
-	ROM_REGION( 0x020000, "gfx2", 0 )
-	ROM_LOAD( "u10.1",   0x000000, 0x020000, CRC(79321550) SHA1(61f1b772ed8cf95bfee9df8394b0c3ff727e8702) ) /* FG0 (8 x 8) */
+	ROM_REGION( 0x020000, "gfx2", 0 )  /* FG0 (8 x 8) */
+	ROM_LOAD( "1_excellent.u10",   0x000000, 0x020000, CRC(79321550) SHA1(61f1b772ed8cf95bfee9df8394b0c3ff727e8702) )
 
-	ROM_REGION( 0x200000, "gfx3", 0 )
-	ROM_LOAD( "u13",     0x000000, 0x200000, CRC(62f3952f) SHA1(7dc9ccb753d46b6aaa791bcbf6e18e6d872f6b79) ) /* Sprites (16 x 16) */
+	ROM_REGION( 0x200000, "gfx3", 0 )  /* Sprites (16 x 16) */
+	ROM_LOAD( "u13",     0x000000, 0x200000, CRC(62f3952f) SHA1(7dc9ccb753d46b6aaa791bcbf6e18e6d872f6b79) ) /* 23C16000 MASK ROM */
 
-	ROM_REGION( 0x080000, "oki", 0 )    /* M6295 acc to Raine */
-	ROM_LOAD( "u55",   0x000000, 0x080000, CRC(b3063351) SHA1(825e63e8a824d67d235178897528e5b0b41e4485) )
+	ROM_REGION( 0x080000, "oki", 0 )   /* M6295 acc to Raine */
+	ROM_LOAD( "u55",   0x000000, 0x080000, CRC(b3063351) SHA1(825e63e8a824d67d235178897528e5b0b41e4485) ) /* OKI M534001B MASK ROM */
 
-	ROM_REGION( 0x200000, "msm", 0 )    /* M6585 acc to Raine */
-	ROM_LOAD( "u56",   0x000000, 0x200000, CRC(092b2c0f) SHA1(2ec1904e473ddddb50dbeaa0b561642064d45336) )
+	ROM_REGION( 0x200000, "msm", 0 )   /* M6585 acc to Raine but should be for ES-8712??? */
+	ROM_LOAD( "u56",   0x000000, 0x200000, CRC(092b2c0f) SHA1(2ec1904e473ddddb50dbeaa0b561642064d45336) ) /* 23C16000 MASK ROM */
 ROM_END