| Jumper | Configuration | Setting |
|---|---|---|
| W2 | 486SX All other CPUs (default) |
Pins 1-2 1-2 & 3-4 |
| W3 | P24T CPU All other CPUs (default) |
Not installed Installed |
| W16 | 25MHz 33MHz (default) |
Not installed Installed |
| W20 | 25MHz 33MHz (default) |
Installed Not installed |
| W33 | DX4 DX4 internal double clock 486SX, DX2, DX and DX4 internal clock tripler (default) |
Pins 1-2 Pins 2-3 Not installed |
ISA IDE Selection
| Jumper | Configuration | Setting |
|---|---|---|
| W42 | ISA IDE uses ISA IRQ 14 ISA IDE uses ISA IRQ 15 |
Pins 1-2 Pins 2-3 |
| W43 | ISA IDE uses DMA Channel 6 ISA IDE uses DMA Channel 7 ISA IDE uses P10 transfer (default) |
Pins 1-2 Pins 2-3 Not installed |
Keyboard Selection
| Jumper | Configuration | Setting |
|---|---|---|
| W10 | PS/2 Mouse installed (default) PS/2 Mouse not installed |
Installed Not installed |
Tag Selection
| Jumper | Configuration | Setting |
|---|---|---|
| W24 | 7-Bit Tag 8-Bit Tag 9-Bit Tag (default) Illegal |
Not installed Installed Installed Not installed |
| W26 | 7-Bit Tag 8-Bit Tag 9-Bit Tag (default) Illegal |
Installed Installed Not installed Not installed |
BIOS Mode
| Jumper | Configuration | Setting |
|---|---|---|
| W6 | BIOS in normal mode (default) BIOS in boot recovery |
Pins 2-3 Pins 1-2 |
DPU Selection
| Jumper | Configuration | Setting |
|---|---|---|
| W17 | DPU generate parity CPU generate parity |
Pins 1-2 Pins 2-3 |
| W18 | DPU forces parity error DPU does not force parity error (default) |
Pins 1-2 Pins 2-3 |
PCI Ports
| Jumper | Configuration |
|---|---|
| J20 | PCI+1 (master/slave shared with EISA slot J17) |
| J19 | PCI+2 (master/slave) |
| J18 | PCI+3 (master/slave) |
PCI Compliant IRQ Jumper Header
| Jumper | Setting |
|---|---|
| J101 | Open (default) Pin 2: Route to ISA IRQ1 Pin 3: Route to ISA IRQ3 Pin 4: Route to ISA IRQ4 Pin 5: Route to ISA IRQ5 Pin 6: Route to ISA IRQ6 Pin 7: Route to ISA IRQ7 Pin 8: Route to ISA IRQ8 Pin 9: Route to ISA IRQ9 Pin 10: Route to ISA IRQ10 Pin 11: Route to ISA IRQ11 Pin 12: Route to ISA IRQ12 Pin 13: Route to ISA IRQ14 Pin 14: Route to ISA IRQ15 |
Cache Selections
| Jumper | Configuration | Setting |
|---|---|---|
| W1 | Secondary cache in write-through mode Secondary cache in write-back mode (default) |
Pins 1-2 Pins 2-3 |
| W4 | Internal cache in write-through mode (default) Internal cache in write-back mode |
Not installed Installed |
| W5 | 128KB of secondary cache 256KB of secondary cache (default) |
Not installed Installed |
| W21 | Secondary cache not installed Secondary cache installed (default) |
Installed Not installed |
| W22 | 128KB of secondary cache 256KB of secondary cache (default) |
Installed Not installed |
| W23 | 128KB of secondary cache 256KB of secondary cache (default) |
Not installed Installed |
PCI IDE Selections
| Jumper | Configuration | Setting |
|---|---|---|
| W35 | PCI IDE uses ISA IRQ 14 (default) PCI IDE does not use ISA IRQ 14 (default) |
Installed Not installed |
| W35 | PCI IDE uses PCI INTR_A (default) PCI IDE does not use PCI INTR_A |
Installed Not installed |
| W38 | PCI uses ISA IRQ 15 PCI does not use ISA IRQ 15 (default) |
Installed Not installed |
Reserved Jumpers
| Jumper | Setting |
|---|---|
| W8/19 | Installed |
| 19 | Installed |
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for any BUG on this page found - Thank you.