[MAME]

The Pit
Taito, 1982

PCB Layout
----------

HT-01A
HRK001188
|-------------------------------------------------------|
| MB3730               5MHz                             |
|                                 |---------------|    |-|
|         AY3-8910     Z80(1)     |               |    | |
|                                 |     EPOXY     |    | |
|                                 |    MODULE     |    | |
|                                 |               |    | |
|2  82S123.IC4                    |               |    | |
|2  VOL                           |---------------|    |-|
|W                                                      |
|A                                                      |
|Y    DSW1(4)                                          |-|
|     DSW2(4)     PIT07.IC30   PIT01.IC38              | |
|            2114                                      | |
|            2114 PIT06.IC31   PIT02.IC39              | |
|            2114                                      | |
|            2114              PIT03.IC40  Z80(2)      | |
|                                                      |-|
|                 PIT05.IC33   PIT04.IC41               |
|-------------------------------------------------------|
Notes:
      Z80(1)clock- 2.500MHz [5/2]
      Z80(2)clock- 3.072MHz [18.432/6]
      8910 clock - 1.536MHz [18.432/12]
      HSync      - 15.5kHz
      VSync      - 60Hz

HT-01B
|-------------------------------------------------------|
|                                                       |
|                                            PIT08.IC9 |-|
|                                                      | |
| 18.432MHz                                  PIT09.IC8 | |
|                                                      | |
|                                               2114   | |
|                                                      | |
|                     2125                      2114   |-|
|                                                       |
|                     2125                              |
|                                                      |-|
|                     2125                             | |
|                                                      | |
|                     2125                             | |
|                                                      | |
|                     2125                      2114   | |
|                                                      |-|
|                     2125                      2114    |
|-------------------------------------------------------|

-


[MAME]

The Pit/Round Up/Intrepid/Super Mouse

Memory map (preliminary)


Main CPU:

0000-4fff ROM
8000-87ff RAM
8800-8bff Color RAM        (Not used in Intrepid/Super Mouse)
8c00-8fff Mirror for above (Not used in Intrepid/Super Mouse)
9000-93ff Video RAM
9400-97ff Mirror for above (Color RAM in Intrepid/Super Mouse)
9800-983f Attributes RAM
9840-985f Sprite RAM

Read:

a000      Input Port 0
a800      Input Port 1
b000      DIP Switches
b800      Watchdog Reset

Write:

b000      NMI Enable
b002      Coin Lockout
b003	  Sound Enable
b005      Intrepid graphics bank select
b006      Flip Screen X
b007      Flip Screen Y
b800      Sound Command


Sound CPU:

0000-0fff ROM  (0000-07ff in The Pit)
3800-3bff RAM


Port I/O Read:

8f  AY8910 Read Port


Port I/O Write:

00  Reset Sound Command
8c  AY8910 #2 Control Port    (Intrepid/Super Mouse only)
8d  AY8910 #2 Write Port	  (Intrepid/Super Mouse only)
8e  AY8910 #1 Control Port
8f  AY8910 #1 Write Port

-

[Apr/21/2006]

The Pit (Bootleg)  
AW Zilec Elc Ltd. 1982  

CPU on main board:
2x MK3880N-Z80CPU
1x AY-3-8910
1x oscillator 18.000Hz

on lower board:
1x oscillator 18432Hz  
ROMs on main board:
1x AM2732 (1)
4x HN462732G (2,3,4,5)
1x MK2716J (6)
1x MMI6331

on lower board:
2x MK2716J (7,8)  
Note 1x 22x2 edge connector
1x trimmer (volume)
2x 4 switches dip  

Funzionamento Non testata  
In vendita Si  

Dumped 20/04/2006  

-
