| Feature | Jumper Setting |
CPU Jumper | Connector
|
| CPU | 80486SX/DX/DX2/DX4, 80486SL, OverDirver
Cyrix M6, DX/DX2/DX4 (M7) AMD 486/DXLT, X5 UMC486 |
| Speed | 25~100 MHz CPU (V.7 supports 133)
25/26.67/33 MHz PCI bus I/O clock 8MHz for ISA bus |
| DRAM Memory | 1 Bank 30-pin 256 Kb/1/4/16 Mb SIMM
2 Bank 72-pin 1/2/4/8/16/32 Mb SIMM 1 ~ 64Mb on board Supports page mode |
| Cache Memory | SRAM 64~256 Kb |
| BUS Slots | 7 16-bit ISA & 3 VL bus |
| Dimension | 22 Cm x 25 Cm |
| BIOS | Award or AMI Legal |
| Operating System | MS/DOS, OS/2, Windows 3.x, Windows 95, Windows NT, Novell |
| JP8 | CMOS Function Select | |
| 2-3 Closed | To maintain setup data (Default) | |
| 3-4 Closed | To clear setup memory | |
| External Battery Connector | ||
| 1 | + | |
| 4 | - | |
| JP12 | DS12887A RTC Module IC Clear Select | |
| Open | Normal | |
| Closed | Clear | |
| JP21 | VESA Bus Clock Select | |
| Open | <= 33 MHz | |
| Closed | > 33 MHz | |
| JP22 | VESA Bus Wait State | |
| Open | 0 Wait | |
| Closed | 1 Wait | |
| JP24 | Suspend LED | |
| JP25 | Suspend Mode Switch | |
| JP36 | MCA3 VESA BUS Slot Select | |
| 1-2 Closed | Synchronous Mode | |
| 2-3 Closed | Asynchronous Mode | |
| Size/Jumper | JP7 | JP33 | JP9 | JP10 |
| 64 Kb (8k x 8) | Open | Open | Open | 2-3 Closed |
| 128 Kb (32k x 4) | Open | Closed | 1-2 Closed | 1-2 Closed |
| 256 Kb (64k x 4) | Closed | Closed | 1-2, 3-4 Closed | 1-2 Closed |
| 256 Kb (32k x 8) | Closed | Closed | 2-3 Closed | 2-3 Closed |
3. CPU JUMPER SETTING
| CPU Clock | JP4 | JP5 | JP6 |
| 25 MHz (25, 50, 75) | Open | Open | Closed |
| 33 MHz (33, 66, 100, 133) | Closed | Closed | Closed |
| 40 MHz (40, 80, ) | Open | Closed | Closed |
| 50 MHz | Closed | Open | Open |
| CPU Voltage | JP14 | JP27 | JP16 | JP38 | JP39 |
| 3.3~3.6 V | 1-2 Closed | 1-2 Closed | 1-2 Closed | 1-2 Closed | Open |
| Cyrix 4 V | 1-2 Closed | 1-2 Closed | 1-2 Closed | 2-3 Closed | Closed |
| 5 V | 2-3 Closed | 2-3 Closed | 2-3 Closed | 1-2 Closed | Open |
Motherboard Revision and Pin Existence
| Version | JP20 | JP23 | JP40 | Remark |
| 1 | No | No | No | |
| 2 | No | No | No | |
| 3 | No | Yes | No | Support AMD 3V CPU |
| 5 | Yes (2 Pin) | No | No | Support AMD 3V CPU |
| 6 | Yes (2 Pin) | No | No | Support AMD 3V & Cyrix 4V CPU |
| 7 | Yes (3 Pin) | No | Yes | Above + AMD Enhanced CPU |
(Close the jumpers indicated below. Leave JP23 open.)
| CPU Type | JP11 | JP12 | JP13 | JP17 | JP18 | JP19 | JP20* | JP35 | JP40* |
| Intel SX | O | 2-3 | 2-3 | O | O | O | O | C | O |
| Intel SX (Exxx) | 1-2 | 2-3 | 2-3 | 1-2 | 5-6 | 1-2, 3-4 | O | C | O |
| Intel DX/DX2 | O | 2-3 | 1-2, 3-4 | 1-2 | O | O | O | C | O |
| Intel OverDrive
Intel P24D Cyrix 5x86 |
1-2, 4-5 | 1-2, 4-5 | 1-2, 3-4 | 1-2 | 3-4, 5-6 | 1-2, 3-4 | O | O | O |
| Intel P24T | 1-2 | 1-2 | 1-2, 3-4 | 2-3 | 5-6 | 1-2, 3-4 | O | O | O |
| AMD 486 (NV8T) | O | 2-3 | 1-2, 3-4 | 1-2 | O | O | 1-2 | C | O |
| AMD 486 (SV8B/T), 5x86 | 1-2 | 1-2, 4-5 | 1-2, 3-4 | 1-2 | 3-4, 5-6 | 1-2, 3-4 | see below @ | O | C |
| Cyrix SX (M6) | 1-2, 3-4, 5-6 | 1-2, 3-4, 5-6 | 2-3 | O | 2-3, 4-5 | 2-3, 4-5 | O | O | O |
| Cyrix 486 (M7) | 1-2, 3-4, 5-6 | 1-2, 3-4, 5-6 | 1-2, 3-4 | 1-2 | 2-3, 4-5 | 2-3 | O | O | O |
| UMC486 | 2-3 | 2-3 | 2-3 | 3-4 | 1-2 | O | O | C | O |
| Pin No | Assignment | Pin No | Assignment |
| 1 | Speaker | 10 | Turbo LED- |
| 2 | NC | 11 | Turbo LED+ |
| 3 | Ground | 12 | Reset Control |
| 4 | +5 Vdc | 13 | Ground |
| 5 | Power LED+ | 14 | Turbo Control |
| 6 | NC | 15 | Ground |
| 7 | Ground | 16 | NC |
| 8 | Key Lock | 17 | +5 Vdc |
| 9 | Ground | 18 | Ground |