• Unknown 586MPCI M1 P459F00100

• DALLAS RTC coin cell empty

The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.

PS/2 mouse mod (by samsam3144):

PS2 header isn't connected by default, following modifications have to be made to wire it to AMIKEY 2 chip for correct functionality

• Remove R173 000 ohm resistor
• Close circuit R172 pads Above Amikey
• Remove R169 000 resistor
• Remove R170 222 resistor
• Close circuit R168 pads
• Close circuit R174 pads
• Fit jumper cap to JP11 IRQ12 for PS2

Header pinout: pin 1 is +5v, pin 5 is GND, pin 6 Clock, pin 7 Data. Needs modified BIOS to work.