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PCChips M536Jumper Settings Bios Upgrades |
| J1G1 | COM2/4 Connector |
| J1H1 | ATX Power Supply Connector |
| J1J1 | PS/2 Mouse Connector |
| J1J2 | AT Power Supply Connectors |
| J1K1 | PS/2 Keyboard Connector |
| J1L1 | COM1/3 Connector |
| JP3H1 | VRM Voltage Regulator Output Selectors IO |
| JP4H1 | VRM Voltage Regulator Output Selectors CORE |
| JP5I1-2 | CPU Internal Clock Speed Selectors |
| JP6D1-3 | Board Freq Selectors |
| JP7A1 | Flash ROM Voltage Selector |
| JP7E1 | Internal/External Battery Connector |
| JP7L1-3 | DIMM Socket Voltage Selectors |
| JP8E1 | AT-Bus clock divisor |
| JP10B2 | CMOS RAM Clear |
| JP10B1 | Keylock & Power LED Connector |
| JP10B3 | Speaker Connector |
| JP10C2 | HDD LED Connector |
| JP10C3 | Reset Switch Connector |
| J10D1, J10D2 | Universal Serial Bus Connector |
J10D1, J10D2 Universal Serial Bus Connector:
| Pin | Description |
|---|---|
| 1 | +5 V DC |
| 2 | Data - |
| 3 | Data + |
| 4 | Ground |
JP10C3 Reset Switch Connector:
| JP10C3 | Reset Switch Connector |
|---|---|
| Open | Normal |
| Closed | Reset |
| JP10C3 | CMOS RAM Clear |
|---|---|
| Open | Normal |
| Closed | Clear CMOS |
JP7L1-3 DIMM Socket Voltage Selectors:
| JP7L1-3 | DIMM Socket Voltage Selectors |
|---|---|
| 1-2 | 5V (usually EDO-DIMMs) |
| 2-3 | 3.3V (SDRam) |
JP7A1 Flash ROM Voltage Selector:
| JP7A1 | Flash ROM Voltage Selector |
|---|---|
| 1-2 | Eprom / 5V Flash Rom |
| 2-3 | 12V Flash Rom |
| JP6D1-3 Board Freq Selectors | ||||||
|---|---|---|---|---|---|---|
| 40 MHz | 50 MHz | 55 MHz | 60 MHz | 66 MHz | 75 MHz | |
| JP6D3 | 2-3 | |||||
| JP6D2 | 1-2 | |||||
| JP6D1 | 1-2 | |||||
AT-Bus clock divisor:
Depending on the Board Freq this Jumpers needs to be adjusted.
The resulting AT-Bus Frequency should not exceed 8.5MHz.
| Setting | Board Freq | PCI = Board Freq / 2 | AT-Bus |
|---|---|---|---|
| 1-2:PCI/4 | 66 MHz | 33 Mhz | 8.25 MHz |
| 1-2:PCI/4 | 66 MHz | 30 Mhz | 7.5 MHz |
| 1-2:PCI/4 | 55 MHz | 27.5 Mhz | 6.8 MHz |
| 2-3:PCI/3 | 50 MHz | 25 Mhz | 8.33 MHz |
JP4H1 VRM Voltage Regulator Output Selector:
| JP4H1 | IO-Voltage |
|---|---|
| 1-2 | 3.5V |
| 2-3 | 3.3V |
JP4H1 VRM Voltage Regulator Output Selectors:
| JP4H1 | CORE-Voltage | |
|---|---|---|
| None | 2.5V | |
| D | 2.7V | |
| C | 2.8V | |
| B | 2.9V | |
| E | 3.3V | |
| A | 3.5V | |
JP5I1-2 CPU Internal Clock Speed Selectors:
| JP5I1-2 | CPU Internal Clock Speed Selectors | |
|---|---|---|
| Mult | JP5I1 | JP5I2 |
| 1.5x/3.5x | Off | Off |
| 2.0x | Off | On |
| 2.5x | On | On |
| 3.0x | On | Off |
Here is a saved version from a M536 (Bios-ID:03/03/97-i430VX-02071997C-00).
It looks like this is very much the same version as used on all the other i430VX based PCChips boards.
You may try the latest Bios for the other VX-based boards (10/16/97S),
which supports HHDs over 8GB and up to 32GB.
Or try the patched version here for support up to 64GB.
I HAVEN'T HAD THE OPPURTUNITY TO TEST IT, SO USE IT AT YOUR OWN RISK!!
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