ADVANCED INTEGRATION RESEARCH, INC.
486MI REV. 2.2
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium Overdrive |
Processor Speed | 8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz |
Chip Set | SIS |
Max. Onboard DRAM | 64MB |
Cache | 64/128/256/512KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3), floppy drive interfaces (2), green PC connector, IDE interface, parallel port, serial ports (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Serial port 1 | CN1 | Reset switch | J2 |
Serial port 2 | CN2 | Turbo switch | J3 |
Parallel port | CN3 | Turbo LED | J4 |
IDE interface | CN4 | Speaker | J5 |
Floppy drive interface 1 | CN5 | IDE interface LED | J6 |
Floppy drive interface 2 | CN6 | Power LED & keylock | J7 |
Green PC connector | J1 | 32-bit VESA local bus slots | SL1 - SL3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP8 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP9 | pins 1 & 2 closed |
» | Flash BIOS write protect enabled | JP17 | pins 1 & 2 closed |
Flash BIOS write protect disabled | JP17 | pins 2 & 3 closed | |
» | CMOS memory normal operation | JP20 | pins 1 & 2 closed |
CMOS memory clear | JP20 | pins 2 & 3 closed | |
» | VESA IDE interface enabled | JP22 | pins 1 & 2 closed |
VESA IDE interface disabled | JP22 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP28 | Open |
» | Factory configured - do not alter | JP29 | Open |
» | Parallel port IRQ select IRQ7 | JP30 | pins 1 & 2 closed |
Parallel port IRQ select IRQ5 | JP30 | pins 2 & 3 closed | |
» | System wake up IRQ select IRQ4 (COM1 & COM2) | JP31 | pins 1 & 2 closed |
System wake up IRQ select IRQ3 (COM2 & COM4) | JP31 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP37 | Open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
2MB | (1) 512K x 36 | NONE | NONE | NONE |
4MB | (1) 512K x 36 | NONE | (1) 512K x 36 | NONE |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
6MB | (1) 512K x 36 | NONE | (1) 1M x 36 | NONE |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
8MB | (1) 2M x 36 | NONE | NONE | NONE |
10MB | (1) 512K x 36 | NONE | (1) 1M x 36 | (1) 1M x 36 |
10MB | (1) 512K x 36 | NONE | (1) 2M x 36 | NONE |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | NONE |
12MB | (1) 2M x 36 | NONE | (1) 1M x 36 | NONE |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 2M x 36 | NONE | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 2M x 36 | NONE | (1) 2M x 36 | NONE |
20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | NONE |
24MB | (1) 2M x 36 | NONE | (1) 4M x 36 | NONE |
32MB | (1) 8M x 36 | NONE | NONE | NONE |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | NONE |
40MB | (1) 2M x 36 | NONE | (1) 4M x 36 | (1) 4M x 36 |
40MB | (1) 2M x 36 | (1) 8M x 36 | NONE | NONE |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (1) 8M x 36 | NONE | (1) 4M x 36 | NONE |
DRAM CONFIGURATION (CON'T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 8M x 36 | NONE | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 8M x 36 | NONE | (1) 8M x 36 | NONE |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP10 | JP11 | JP12 | JP13 | JP14 | JP15 |
64KB | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
256KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
512KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||
Type | JP1 | JP2 | JP38 |
80486SX | Open | pins 2 & 3 closed | pins 1 & 2 closed |
80487SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
ODP486SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
80486DX/DX2 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
80486DX4 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 closed | Open |
Pentium Overdrive | pins 2 & 3 closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
CPU CLOCK CONFIGURATION (80486DX4 ONLY) | |||
Speed | External clock speed | Internal clock speed | JP3 |
3x | 25/33MHz | 75/100MHz | Open |
2.5x | 33MHz | 83MHz | pins 2 & 3 closed |
2x | 50MHz | 100MHz | pins 1 & 2 closed |
CPU SPEED CONFIGURATION | ||||
Speed | JP5 | JP6 | JP7 | ID3 |
25MHz | Closed | Closed | Closed | pins 1 & 2 closed |
33MHz | Closed | Closed | Open | pins 1 & 2 closed |
40MHz | Closed | Open | Closed | pins 2 & 3 closed |
50iMHz | Closed | Closed | Closed | pins 1 & 2 closed |
50MHz | Closed | Open | Open | pins 2 & 3 closed |
66iMHz | Closed | Closed | Open | pins 1 & 2 closed |
CPU VOLTAGE CONFIGURATION | |
Voltage | W1 |
3.3v | pins 1 & 3, 2 & 4 closed |
5v | pins 3 & 5, 4 & 6 closed |
VESA WAIT STATE CONFIGURATION | |
Wait states | ID2 |
0 wait states | pins 1 & 2 closed |
1 wait state | pins 2 & 3 closed |
IDE SPEED CONFIGURATION | ||
Speed | JP23 | JP24 |
0 | pins 1 & 2 closed | pins 1 & 2 closed |
2 | pins 2 & 3 closed | pins 1 & 2 closed |
4 | pins 1 & 2 closed | pins 2 & 3 closed |
6 | pins 2 & 3 closed | pins 2 & 3 closed |
ECP MODE CONFIGURATION | ||||
Setting | Mode | JP25 | JP26 | JP27 |
Enabled | ECP mode disabled for parallel port | Open | Open | 2 & 3 |
Disabled | ECP mode enabled (DMA 3 used) | 1 & 2 | 1 & 2 | 1 & 2 |
Disabled | ECP mode enabled (DMA 1 used) | 2 & 3 | 2 & 3 | 1 & 2 |
Note: If setting is enabled- 4 floppy drives are used. Pins designated should be in the closed position. |