System 16
A hardware platform by Sega, uses a 16 bit 68000 processor. The edge connector on the PCB is not JAMMA compatible, an adapter is needed. There are two variants of the hardware: System 16A and System 16B, currently only System 16B boards have been tested.
Pinout
SOLDER SIDE COMP SIDE ----------------------------------------------------- A GND 1 GND B GND 2 GND C +5V 3 +5V D +5V 4 +5V E +12V 5 +12V F CTR 2 6 CTR 1 H 7 J P2 Button 3 8 P1 Button 3 K P2 Button 2 9 P1 Button 2 L P2 Button 1 10 P1 Button 1 M 11 N PL 2 DOWN 12 PL 1 DOWN P PL 2 UP 13 PL 1 UP R PL 2 RIGHT 14 PL 1 RIGHT S PL 2 LEFT 15 PL 1 LEFT T 16 U 17 V 18 X 1 PL START 20 COIN 1 Y 2 PL START 21 COIN 2 Z 22 TEST a 23 SVC b SP- 24 SP+ c VID GN 25 VID RED d SYNC 26 VID BL e GND 27 GND f GND 28 GND
XRGB-3 specific settings
As with all arcade boards, the 220 ohm setting needs to be set because signal lines are higher than with game consoles. To do this change 21ピン入力終端 from 75 オーム (75 OHM) to 220 オーム (220 OHM) under the オプション (Options) menu on the XRGB-3.
The tested PCBs showed distortion on the top 26 lines in either B0 or B1 mode as shown in the following photographs:
| Altered beast CRT Test | Golden Axe demo |
This can be fixed by setting AFC to MANUAL and changing the default value to 3. It does fix the problem completely in B0, and almost fixes it in B1 as shown below:
| Altered beast CRT Test | Golden Axe demo |
An off/on cycle is needed sometimes after changing the AFC settings.
Games tested
- Altered Beast (System 16B)
- Golden Axe (System 16B)
