486UL REV. 1.0 Motherboard Settings and Configuration
ADVANCED INTREGRATION RESEARCH, INC.
486UL REV. 1.0
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2/ODP586SX |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | UMC |
Max. onboard DRAM | 32MB |
SRAM Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 220mm |
I/O Options | 32-bit external memory card, 32-bit VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo switch | J6 |
Power LED & keylock | J3 | Turbo LED | J7 |
Speaker | J4 | 32-bit memory card | S1 |
Reset | J5 | 32-bit VESA local bus slots | S2, S3, & S4 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Keyboard clock select 8MHz | J08 | pins 1 & 2 closed |
| Keyboard clock select iOSC derived | J08 | pins 2 & 3 closed |
» | CMOS memory normal operation | JP4 | pins 1 & 2 closed |
| CMOS memory clear | JP4 | pins 2 & 3 closed |
» | Onboard battery enabled | JP8 | Closed |
| Onboard battery disabled | JP8 | Open |
» | Monitor type select color | JP10 | Closed |
| Monitor type select monochrome | JP10 | Open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
3MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
4MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
6MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | NONE |
7MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4)1M x 9 | (4)1M x 9 | NONE | NONE |
9MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
10MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE | NONE | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE |
24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE |
28MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4)4M x 9 | (4)4M x 9 | NONE | NONE |
36MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 |
48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
Note: Banks 2 & 3 are located on the optional external memory card inserted into S1. | ||||
CPU TYPE CONFIGURATION | |||
CPU | JP1 | JP2 | JP3 |
80486SX | Open | pins 2 & 3 closed | Open |
80487SX/ODP486SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 closed | Open |
80486DX/DX2 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 closed | Open |
CPU SPEED CONFIGURATION | ||||
Speed | J03 | J04 | J05 | J06 |
20MHz | Closed | Closed | Closed | Open |
25/50i MHz | Closed | Closed | Open | Closed |
33/66i MHz | Closed | Open | Closed | Closed |
40MHz | Open | Open | Closed | Open |
50MHz | Open | Open | Open | Open |
CACHE CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
64KB | (4) 8K x 8 | (4) 8K x 8 |
128KB | (4) 32K x 8 | NONE |
256KB | (4) 32K x 8 | (4) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP13 | JP14 | JP16 | JP17 | JP18 | JP19 |
64KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
128KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
256KB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
Note: Pins designated should be in the closed position. | ||||||
VESA BUS SPEED (ID3) CONFIGURATION | |
CPU speed | JP23 (ID3) |
<=33MHz | Open |
>33MHz | Closed |
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