[MAME]

Psikyo PS4V3 Hardware Overview
Psikyo, 1997-2001

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

PS4V3 MADE IN JAPAN
|--------------------------------------------------------------------|
| SND0.U10 SND1.U19               HA13118            HA13118         |
|                          JRC4741                                   |
| 8L.U112  8H.U113            YAC516    VOL             VOL        |-|
|                  74ACT153 74ACT153                               |
|                                                                  |-|
| 7L.U9    7H.U18  74HCT273 74HCT273 74ACT138 74HCT273               |
|                                             74HC244  74HC244      M|
|                                      74ACT244              CN8    A|
| 6L.U8    6H.U17   74ACT138  93LC56                                H|
|                                 JP4  74ACT244                     J|
|                       |---------|                                 O|
| 5L.U7    5H.U16       |         |    74ACT244              CN7    N|
|                       | PSIKYO  |             74HC14              G|
|                       | PS6807  |    74ACT244        TD62064       |
| 4L.U6    4H.U15       |         |                                |-|
|                       |---------|    74ACT244                    |
|                                                         TD62003  |-|
| 3L.U5    3H.U14       57.2727MHz     74ACT244                      |
|                                               74ACT138  TD62003    |
|                                               3771                J|
| 2L.U4    2H.U13   814260        74AC08 74ACT04 74HC245  74HC244   A|
|                                                                   M|
|                   814260                 |--------|               M|
| 1L.U3    1H.U12                          |        |               A|
|                                          |  SH-2  |                |
|                                          |        |     74HC244  |-|
| 0L.U2    0H.U11    1.U23                 |--------|              |
|                                                         74HC244  |-|
| PROG.U1            2.U22                     74ACT139              |
|--------------------------------------------------------------------|
(All IC's listed)
Notes:
SH-2    - Hitachi HD6417604F28 SH-2 CPU, clock input 28.63635 [57.2727/2] (QFP144)
YMF278  - Yamaha YMF278B OPL4 sound chip, clock input 28.63635MHz [57.2727/2] (QFP80)
YAC516  - Yamaha YAC516 Delta Sigma Modulation D/A Converter with 8 Times Over-sampling
          Filter. Clock input 14.318175MHz [57.2727/4]
814260  - Fujitsu 814260-70 256k x16 (4MBit) DRAM (SOJ40)
3771    - Fujitsu MB3771 Watchdog Reset IC (SOIC8)
93LC56  - 256x8(2k) Serial CMOS EEPROM (SOIC8)
JRC4741 - Japan Radio Co. JRC4741 Quad OP AMP (SOIC14)
HA13118 - 18W Bridge Tied Load (BTL) Mono Audio Amplifier Module (in 15-pin SP-15TA package)
JP4     - Hardwired jumper bank (x4) for region selection.
          All jumpers shorted = Japan region (default)
CN7/CN8 - Extra connector for 2nd screen output and additional player inputs. JAMMA/MAHJONG
          connectors not used together. Either one or the other is used depending on the game.
          Game will operate fine with 1 screen output. CN7/CN8 connection is optional.
TD62064 - Toshiba TD62064 4 Channel High-Current Darlington Sink Driver (SOP18)
TD62003 - Toshiba TD62003 7 Channel High-Current Darlington Sink Driver (SOP16)
VSync   - 60Hz
HSync   - 15.68kHz

ROMs -
       1.U23 - Main Program, ST 27C4002 EPROM (DIP40)
       2.U22 /

       The remaining ROMs are surface mounted TSOP48 Type II MASKROMs,
       either OKI MSM27C3252 (32MBit) or OKI MSM27C1652 (16MBit).
       These MASKROMs are non-standard are require a custom adapter
       to read them. Not all positions are populated for each game. See
       the source below for specifics.

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