[MAME]

Hot Memory (German V1.2)
Tuning/Strata/Incredible Technologies, 1994

This game is a clone of Pairs and runs on Incredible Technologies 32bit hardware.

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

Top (2 separate PCBs plugged into the main board)
---

P/N 1060 REV 0
|---------------------------------|    |---------------------------------|
|6522          SND.U17    SROM0   |    |  GROM15            GROM10       |
|   6809     6264   ENSONIC       |    |                                 |
|                                 |    |  GROM16            GROM11       |
|  LED1                           |    |                                 |
|        PAL1                     |    | *GROM17           *GROM12       |
|                                 |    |                                 |
|                  *SROM2 *SROM1  |    | *GROM18           *GROM13       |
|    ES5506  16MHz                |    |                                 |
|               MM5437            |    |                                 |
|                                 |    |                                 |
|            PAL2                 |    |  GROM5             GROM0        |
|                                 |    |                                 |
|                           VOL   |    |  GROM6             GROM1        |
|                    TDA1543      |    |                                 |
|                                 |    | *GROM7            *GROM2        |
|    555         3403    3403     |    |                                 |
|                                 |    | *GROM8            *GROM3        |
|                                 |    |                                 |
|        JP3                      |    | *GROM9            *GROM4        |
|---------------------------------|    |---------------------------------|
Notes:
      *      - These locations not populated
      ES5506 - Ensonic ES5506 OTTOR2, clock 16.000MHz
      6809   - STMicroelectronics EF68B09, clock 2.000MHz
      ENSONIC- DIP42 chip labelled 'ENSONIC (C)1992 2M 1350901601 9320 1.00' at location ROM0
               -This is actually a 16MBit DIP42 MaskROM
      MM5437 - National Semiconductor MM5437 pseudo-random noise generator chip (DIP8)
      LED1   - Sound Status Yellow LED, blinks when active
      PAL1   - Labelled 'ITBP-1'
      PAL2   - Labelled 'ITSS-1'
      JP3    - 4 pin connector for right speaker output

Main Board
----------

P/N 1059 REV3
|------------------------------------------------------------------------|
|MC3423            84256                   V52C8128K70                   |
|                                                                        |
|                                                                        |
|                  84256                                                 |
|                                                                        |
|                                          V52C8128K70                   |
|A                 84256                            V52C8128K70          |
|M                                                           V52C8128K70 |
|M             PAL3      LED2                                            |
|A                                       PAL4   PAL5   PAL6   PAL7   PAL8|
|J      |-----|                                                          |
|       |     |               HOTMEM1.U88                                |
|       |  6  |           62256                                          |
|       |  8  |                                         |----------|     |
|       |  0  |12MHz                          8MHz      |          |     |
|       |  0  |               HOTMEM0.U83               |   IT42   |     |
|       |  0  | BATTERY   62256                         | (QFP208) |     |
|       |     |                                         |          |     |
|DSW(4) |-----| ADM690                     25MHz        |----------|     |
|  J1         J2                                                         |
|------------------------------------------------------------------------|
Notes:
      AMMAJ - Note JAMMA connector is backwards!
      68000 - clock 12.000MHz
      HSync - 15.68kHz
      VSync - 60Hz
      J1/J2 - 15 Pin Connector For Player 3 & 4 Controls
      PAL3  - GAL22V10
      PAL4  - Labelled 'ITVS-16A'
      PAL5  - Labelled 'ITVS-15'
      PAL6  - Labelled 'ITVS-14'
      PAL7  - Labelled 'ITVS-13'
      PAL8  - Labelled 'ITVS-12'
      LED2  - CPU Status Green LED, blinks when active
      IT42  - Custom Incredible Technologies Graphics Generator (QFP208)
      ADM690- Analog Devices ADM690 4.65V Reset, Battery Switchover, Watchdog Timer, Power Fail Input IC (DIP8)
      MC3423- Motorola MC3423 Overvoltage Sensing Circuit (SOIC8)
      84256 - Fujitsu MB84256A-10L 32k x8 SRAM (SOP28)
      62256 - MOSEL MS62256L-10PC 32k x8 SRAM (DIP28)
      V52C8128K70 - Vitelic V52C8128K70 ?? possibly 128k x8 DRAM (SOJ40)

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