SysCon
Overview[edit | edit source]
Syscon handles power, power-LEDs, tray loading (in conjunction with MechaCon, which actually controls the tray and the blue LED), front buttons and some thermal management.
It only exists on consoles up to the SCPH-390XX series (GH-022 board) (as well as system 246/256). After that, it's functionality was overtaken by the new Dragon-MechaCon.
On B/B'/C/C' chassis consoles, it's located on a daughter board (GD-011 for B-chassis, GD-012 for B'-chassis, GD-013 for C and C' chassis), together with RTC, EEPROM, clock battery and part of the voltage regulation circuitry.
Arcade SysCon[edit | edit source]
On Namco System 246 and System 256, the SysCon has some extra functionalities. The most notable extra functionality is the Arcade watchdog, wich is basically a 5 minute timer to shut down the system.
The Mechacon CMD for toggling the state of the blue Eject-LED was reused on these systems as the watchdog reset CMD.
Hardware[edit | edit source]
Syscon is always a Toshiba TMP87C807U.
It has a Mask-ROM of 8 Kilobytes (8 K x 8 bits) and a RAM of 256 Bytes (256 x 8 bits).
Pictured above is a SysCon with firmware 2C64 on a GH-015 board.
Firmware revisions[edit | edit source]
- 1G78 (GH-001, GH-003) (A/A+ chassis)
- 1V33 (GD-011, GD-012) (B/B' chassis)
- 1V86 (?) (Namco System 246/256 in all? variants, probably also System 147/148?)
- 2A69 (GD-013, GH-008, GH-010, GH-012, GH-013, GH-014, GH-016) (AB/C/C'/D/D' chassis)
- 2C64 (GH-015, GH-017, GH-018, GH-019, GH-022) (F/G chassis)