ADVANCED INTEGRATION RESEARCH, INC.
486MIS REV. 1.11
Processor | 80486SX/80487SX/80486DX/80486DX2/ODP486SX/Pentium Overdrive |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
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 (2), floppy drive interface, IDE interface, parallel port, serial ports (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
32-bit VESA Local bus slots | J1 & J2 | Turbo switch | S6 |
Turbo LED | S1 | IDE interface | S10 |
Reset switch | S2 | Floppy drive interface | S11 |
Hard drive LED | S3 | Parallel port | S12 |
Speaker | S4 | Serial port 1 | S13 |
Power LED & keylock | S5 | Serial port 2 | S14 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP6 | Closed |
» | Monitor type select monochrome, VGA or EGA | JP16 | Open |
Monitor type select CGA | JP16 | Closed | |
» | IDE interface enabled | JP17 | Open |
IDE interface disabled | JP17 | Closed | |
» | Factory configured - do not alter | JP18 | Closed |
» | Parallel port select interrupt IRQ7 | JP22 | pins 1 & 2 closed |
Parallel port select interrupt IRQ5 | JP22 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP27 | Closed |
» | Flash BIOS write protect disabled | JP28 | pins 1 & 2 closed |
Flash BIOS write protect enabled | JP28 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP31 | Closed |
» | Normal password operation | JP32 | Open |
BIOS password clear | JP32 | Closed |
DRAM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
2MB | (1) 512K x 36 | None | None |
4MB | (1) 512K x 36 | None | (1) 512K x 36 |
4MB | (1) 1M x 36 | None | None |
6MB | (1) 512K x 36 | None | (1) 1M x 36 |
8MB | (1) 1M x 36 | (1) 1M x 36 | None |
8MB | (1) 2M x 36 | None | None |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
12MB | (1) 2M x 36 | None | (1) 1M x 36 |
16MB | (1) 2M x 36 | None | (1) 2M x 36 |
16MB | (1) 4M x 36 | None | None |
20MB | (1) 1M x 36 | (1) 4M x 36 | None |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 |
24MB | (1) 2M x 36 | None | (1) 4M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | None |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x 36 |
40MB | (1) 2M x 36 | None | (1) 8M x 36 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (1) 8M x 36 | None | (1) 4M x 36 |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x 36 |
64MB | (1) 8M x 36 | None | (1) 8M x 36 |
CACHE SIZE JUMPER CONFIGURATION | |||||||||
Size | JP7 | JP8 | JP9 | JP10 | JP11 | JP12 | JP13 | JP14 | JP15 |
64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
128KB | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
256KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
Note:Pins designated should be in the closed position. |
CACHE SIZE AND SRAM LOCATIONS | ||||
Cache Size | Bank 0 | Bank 1 | TAG | Dirty Bit |
64KB | (4) 8K x 8 | (4 ) 8K x 8 | (1) 8K x 8 | (1) 16K x 1 |
128KB | (4) 32K x 8 | None | (1) 32K x 8 | (1) 16K x 1 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | (1) 16K x 1 |
512KB | (4) 128K x 8 | None | (1) 32K x 8 | (1) 16K x 4 |
CPU EXTERNALCLOCK SPEED | |||
Speed | JP3 | JP4 | JP5 |
20MHz | Open | Closed | Closed |
25MHz | Closed | Open | Closed |
33MHz | Closed | Closed | Open |
40MHz | Open | Open | Closed |
50i MHz | Closed | Open | Closed |
50MHz | Open | Closed | Open |
66i MHz | Closed | Closed | Open |
CPU TYPE | ||
Type | JP1 | JP2 |
80486SX | Open | pins 2 & 3 closed |
80487SX | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
ODP486SX | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
80486DX2 | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
Pentium Overdrive | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
IDE RECOVERY TIME | |||
Time | JP29 | JP30 | |
» | 300ns | Closed | Closed |
240ns | Open | Closed | |
180ns | Closed | Open | |
120ns | Open | Open |
SCSI ADDRESS | ||
Address | W1/pins 3 & 4 | W1/pins 5 & 6 |
DC000h enabled | Closed | Closed |
DC000h disabled | Closed | N/A |
DC8000h enabled | N/A | Closed |
DC8000h disabled | Closed | Closed |
SCSI PORT CONFIGURATION | |||||
Setting | IRQ | W1/1 & 2 | W1/7 & 8 | W1/9 & 10 | |
» | Enabled | 11 | Closed | Closed | Open |
Disabled | 10 | Open | Open | Closed |