UNIDENTIFIED
BC3486UL
Processor | 80386DX/CX486DLC/80486SX/80487SX/ODP487SX/80486DX/ 80486DX2 |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | UMC |
Video Chip Set | None |
Maximum Onboard Memory | 32MB |
Maximum Video Memory | None |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | Local bus slot |
NPU Options | 80387DX/CX83D87 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | BATT | Turbo switch | CN4 |
Power LED & keylock | CN1 | Turbo LED | CN5 |
Speaker | CN2 | Auxiliary keyboard connector | KBD |
Reset switch | CN3 | Local bus slot | SL1 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Battery type select internal | BATT | Pins 2 & 3 closed | |
Battery type select external | BATT | Closed | |
CMOS memory clear | BATT | Pins 3 & 4 closed | |
Monitor type select color | C/M | Closed | |
Monitor type select monochrome | C/M | Open |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | None |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | None |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | None |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
Note: The location of banks 0 & 1 is unidentified. |
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) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JS1 | JS2 | JS3 | JS4 | JS5 | JS6 |
64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
128KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
256KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU SPEED SELECTION (80386) | |||||
Speed | JF1 | JF2 | JF3 | JF4 | JF5 |
25MHz | Open | Closed | Closed | Closed | Open |
33MHz | Open | Open | Closed | Closed | Closed |
40MHz | Open | Closed | Open | Closed | Closed |
CPU SPEED SELECTION (80486) | |||||
Speed | JF1 | JF2 | JF3 | JF4 | JF5 |
20MHz | Closed | Closed | Open | Open | Closed |
25MHz | Open | Closed | Closed | Open | Closed |
33MHz | Open | Open | Closed | Open | Closed |
50iMHz | Open | Closed | Closed | Open | Closed |
50MHz | Open | Open | Open | Open | Open |
66iMHz | Open | Open | Closed | Open | Open |
CPU TYPE SELECTION | ||||
Type | JC1 | JC2 | JC3 | JC4 |
80386 | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
CX486DLC | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
80486 | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
CPU TYPE SELECTION (80486 ONLY) | ||
Type | JC5 | J6C |
80486SX | Pins 2 & 3 closed | Open |
80487SX | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
ODP487SX | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
80486DX | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
80486DX2 | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
NPU SELECTION | ||
Setting | JC7 | JC8 |
NPU not installed | Open | Open |
NPU installed | Closed | Closed |
LOCAL BUS SLOT SELECTION | |||
Setting | J1 | J2 | J3 |
Normal ISA cards installed | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
Local Bus cards installed | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
LOCAL BUS CARD INSTALLED SELECTION | ||
CPU installed | J4 | J5 |
80386 | Pins 2 & 3 closed | Pins 2 & 3 closed |
80486DX-50 | Pins 2 & 3 closed | Pins 2 & 3 closed |
All CPU types | Pins 1 & 2 closed | Pins 1 & 2 closed |