diff --git a/src/mess/drivers/pasogo.c b/src/mess/drivers/pasogo.c
index d44f93f9c0c..8fcdb89214e 100644
--- a/src/mess/drivers/pasogo.c
+++ b/src/mess/drivers/pasogo.c
@@ -1,9 +1,95 @@
 /******************************************************************************
+
+Pasogo Handheld Console
+Koei 1996
+
+This is a handheld console made by Koei in 1996. All of the games available on
+this console are variations of the game 'Go'
+
+
+Main PCB Layout
+---------------
+PT-GMAIN01D
+|--------------|------------||
+|POWER    VOL  |            ||
+|       LM2937*|    CART    ||
+|CE-0702       |    SLOT    ||
+|              |    CN1     ||
+|              |MC14071B*   ||
+|              |            ||
+| PIEZO_SPKR   |------------||
+|CN5           74HC04*       |
+|    X2                      |
+|  |-------|              CN4|
+|  |VAGEM  |                 |
+|  |VG230  |                 |
+|  |       |     HM514800*   |
+|  |       |              CN3|
+|  |-------|     HM514800*   |
+|CN2*  X1                    |
+|----------------------------|
+Notes: (all ICs shown)
+
+       VG230    - Vagem VG230 single-chip PC platform. Contains 16 MHz NEC uPD70116H V30HL CPU 
+                  (which is a high-speed low-power 8086 variation), IBM PC/XT-compatible core 
+                  logic, LCD controller (CGA/AT&T640x400), keyboard matrix scanner, dual PCMCIA
+                  2.1 card controller, EMS 4.0 hardware support for up to 64MB, built-in timer
+                  PIC/DMA/UART/RTC controllers. The clock input is 32.2200MHz. An internal divider
+                  creates a 16.11MHz clock for the V30HL CPU.
+       HM514800 - Hitachi HM514800 512k x8-bit DRAM         
+       MC14071  - Motorola MC14071 Quad 2-input OR gate
+       74HC04   - 74HC04 Hex inverter
+       LM2937   - Texas Instruments LM2937ES-5 voltage regulator (Max 26V input, 5V output at 500mA)
+       CE-0702  - TDK CE-0702 DC-DC converter for LCD in SIP9 package (5V input, -24V output at 25mA)
+       POWER    - 9V DC power input from AC/DC adapter
+       VOL      - Volume pot
+       CN5      - 5 pin connector for 4-way control pad (up/down/left/right/ground)
+       CN4      - 5 pin connector for on/off switch and 2 buttons
+       CN3      - 2 pin power input from 6x AA-battery compartment (input voltage is 9V DC)       
+       CN2      - Flat cable connector for video out to LCD panel. When the LCD is powered on the pixels 
+                  are blue. The LCD panel PCB has part number 97-44264-8 LMG6912RPFC LMG6910RPGR 
+                  and contains the following parts.....
+                  Matsushita 53008HEB-8
+                  Sanyo LA6324N quad operational amplifier
+                  Hitachi BD66285BFC LCD controller IC (x3)
+                  Hitachi BD66284BFC LCD controller IC (x4)
+                  The LCD flat cable has several wires but 2 of them have frequencies which measure 
+                  69.9161Hz and 16.7798kHz. These are assumed to be VSync and HSync
+       CN1      - Cart slot
+       X1       - Marked 322. Measures 32.21732MHz so this is a common 32.22MHz OSC.
+       X2       - No markings. Measures 32.768kHz and used for the RTC
+       *        - These parts are on the other side of the PCB
+       
+
+Carts
+-----
+All of the carts are identical. Most have only one surface mounted mask ROM. Either a 
+MX23C8100 (8M) or YRM0442 (4M). Some are populated with additional parts including a 62256 
+32kx8 SRAM, a 3v coin battery and a MM1081N reset chip plus a few resistors/capacitors and 
+a transistor. All parts are surface mounted.
+
+PT-GMEM01B
+PT-GMEM01C
+|---------------|
+|--     CR2016  |
+|-- MM1081      |
+|--             |
+|--             |
+|--       62256 |
+|--             |
+|--             |
+|--    MX23C8100|
+|-- or YRM0442  |
+|---------------|
+Notes:
+      Carts containing just one mask ROM are KS-1002, KS-1003, KS1004 and KS-1009
+      Carts containing RAM, battery and reset chip are KS-1001 and KS1010
+      Carts KS-1005, KS-1006, KS-1007 and KS-1008 probably exist but are unknown.
+
+===========================================================================================
+
  PeT mess@utanet.at march 2008
 
-
- vadem vg230 (single chip pc) based handheld
-
 although it is very related to standard pc hardware, it is different enough
 to make the standard pc driver one level more complex, so own driver
 
@@ -498,7 +584,7 @@ WRITE_LINE_MEMBER(pasogo_state::pasogo_pic8259_set_int_line)
 
 static MACHINE_CONFIG_START( pasogo, pasogo_state )
 
-	MCFG_CPU_ADD("maincpu", I80188/*V30HL in vadem vg230*/, 10000000/*?*/)
+	MCFG_CPU_ADD("maincpu", I80188/*V30HL in vadem vg230*/, XTAL_32_22MHz/2)
 	MCFG_CPU_PROGRAM_MAP(pasogo_mem)
 	MCFG_CPU_IO_MAP( pasogo_io)
 	MCFG_CPU_VBLANK_INT_DRIVER("screen", pasogo_state,  pasogo_interrupt)