Game Elf 619-in-1 MAME Bootleg Multi-Game PCB
Hardware Info by Guru
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Sub Board with....
Samsung S3C6410HX-66 667MHz CPU. ARM1176JZF-S core (ARM11 family) with Vector Floating Point (VFP) coprocessor FBGA424
2x Hynix H5MS1G62MFP-J3M 1-Gbit (64M x16) Mobile DDR-333 SDRAM FBGA60
Round 2-pin Crystal, unknown value (measurement is null). Tied directly to the BGA CPU.

On Main Board....
Mostly standard JAMMA edge connector with pin 27 as button 5 top and bottom.
SD Card Slot. Card is 8GB with 100MB FAT Partition and 2x EXT3 Linux Partitions.
Altera MAX II EPM240T100C5N CPLD TQFP100. For the JAMMA I/O (and probably protection).
FM24CL04BG 512 x8-bit I2C FRAM (EEPROM-like device) SOIC8
Wolfson Microelectronics WM9713G Integrated AC'97 Audio and Touchpanel CODEC QFN48, with
   connected 24.576MHz oscillator
Chrontel 7026B-TF TV/VGA Video Encoder TQFP80 with connected 12MHz crystal
4x AMS1117-x.x (-2.5, -1.8, 2x -3.3) Voltage Regulators
LM386 Mono Audio Power Amplifier
VGA HD15 Connector (this outputs actual VGA at 31.5kHz)
Volume Pot
3.5mm Headphone Jack
4-pin Berg Connector for Power
JP7 6-pin header for Single Trackball
   Pin 1 GND
   Pin 2 Y+
   Pin 3 Y-
   Pin 4 X-
   Pin 5 X+
   Pin 6 +5V
Type A USB connector
2-position DIP Switch. SW1 OFF=CGA 15.75kHz, ON=VGA 31.5kHz
                       SW2 OFF=1024x768 VGA Resolution, ON=640x480 VGA Resolution
Push Button for TEST / SETUP mode for the on-board OS / Menu (not for game test mode). The changed
   settings would be stored in the FM24CL04 IC.
10-pin IEC connector for Dual Trackball
   Pin 1 +5V
   Pin 2 AX+
   Pin 3 AX-
   Pin 4 AY+
   Pin 5 AY-
   Pin 6 BX+
   Pin 7 BX-
   Pin 8 BY+
   Pin 9 BY-
   Pin 10 GND
2x SOIC8 chips, both unmarked.
 - One may be a CPLD loader and/or used for protection. The chip ties to CPLD pins 99, 100, 1, 2, 3, 4
   plus 3.3V and GND.
 - The other is definitely some kind of clock generator for the CPU, connected to 3.579545MHz
   oscillator on pin 6 and outputs ~162MHz on pin 7 which goes to the CPU module connector.