UNITRON COMPUTER, INC.
3486 SYSTEM TYPE 32
Processor | 80386DX/CX486DLC/80486SX80487SX/ODP486SX/80486DX/80486DX2 |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)/80(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 32/64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port |
NPU Options | 80387DX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Game port | CN1 | Turbo LED | J19 |
VGA port | CN2 | Turbo switch | J21 |
Parallel port | CN3 | IDE interface LED | J22 |
Serial port 2 | CN4 | External video ports | J23 & J46 |
Serial port 1 | CN5 | Floppy drive interface | J26 |
IDE interface | J16 | Reset switch | J58 |
Power LED & keylock | J17 | Riser Card | SL1 |
Speaker | J18 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Serial port 2 enabled | J3 | pins 1 & 2 closed |
Serial port 2 disabled | J3 | pins 2 & 3 closed | |
» | IDE interface enabled | J4 | pins 1 & 2 closed |
IDE interface disabled | J4 | pins 2 & 3 closed | |
» | Floppy drive interface enabled | J5 | pins 1 & 2 closed |
Floppy drive interface disabled | J5 | pins 2 & 3 closed | |
» | Parallel port select LPT1 | J6 | pins 1 & 2 closed |
Parallel port select LPT2 | J6 | pins 2 & 3 closed | |
» | Serial port 1 enabled | J8 | pins 1 & 2 closed |
Serial port 1 disabled | J8 | pins 2 & 3 closed | |
» | Game port enabled | J9 | pins 1 & 2 closed |
Game port disabled | J9 | pins 2 & 3 closed | |
» | Hard disk drive installed | J10 | pins 1 & 2 closed |
Hard disk drive not enabled | J10 | pins 2 & 3 closed | |
» | Parallel port enabled | J11 | pins 1 & 2 closed |
Parallel port disabled | J11 | pins 2 & 3 closed | |
» | NPU disabled | J20 | pins 2 & 3 closed |
NPU enabled | J20 | pins 1 & 2 closed | |
» | Floppy drive A/B LED select on J22 Floppy drive A | J29 | pins 1 & 2 closed |
Floppy drive A/B LED select on J22 Floppy drive B | J29 | pins 2 & 3 closed | |
» | Floppy/turbo LED select on J19 Floppy (System B or KPUA) | J30 | pins 1 & 2 closed |
Floppy/turbo LED select on J19 Turbo (System M or MSO) | J30 | pins 2 & 3 closed | |
» | Factory configured - do not alter | J31 | Open |
» | Factory configured - do not alter | J32 | Open |
» | Factory configured - do not alter | J33 | Open |
» | Factory configured - do not alter | J34 | Open |
» | Factory configured - do not alter | J43 | Open |
» | Parity check disabled | J44 | pins 1 & 2 closed |
Parity check enabled | J44 | pins 2 & 3 closed | |
» | Monitor type select monochrome | J51 | pins 1 & 2 closed |
Monitor type select color | J51 | pins 2 & 3 closed | |
» | Factory configured - do not alter | J52 | Open |
» | Factory configured - do not alter | J53 | Open |
USER CONFIGURABLE SETTINGS (CON’T) | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | J54 | Open |
» | Factory configured - do not alter | J55 | Open |
» | Factory configured - do not alter | J56 | Open |
» | Factory configured - do not alter | J57 | Open |
Note: Hard drive & floppy drive jumper settings must match. |
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 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
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 | J35 | J36 | J37 | J38 | J39 | J40 | J41 | J42 |
32KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | Open |
64KB | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | Open |
128KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | ||
Type | J24 | J59 |
80386 | pins 1 & 2 closed | Open |
80486DLC | pins 1 & 2 closed | Open |
80486 | pins 2 & 3 closed | Closed |
CPU TYPECONFIGURATION | |
Type | J15 |
80486SX PQFP only | Open |
80486SX PQFP & 80487SX | pins 1 & 2 closed |
80486SX PQFP & 80486DX/DX2/ODP486SX | pins 2 & 3 closed |
VESA CPU TYPE CONFIGURATION | ||
Type | J1 | J14 |
80486SX | pins 2 & 3 closed | Open |
80487SX | pins 1, 2 & 3 closed | pins 2 & 3 closed |
ODP486SX | pins 1, 2 & 3 closed | pins 2 & 3 closed |
80486DX/DX2 | pins 1, 2 & 3 closed | pins 1 & 2 closed |
CPU SPEED CONFIGURATION (ICS2494-244 CLOCK) | ||||
Speed | J47 | J48 | J49 | J50 |
20MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
25MHz | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed |
32MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
33MHz | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed |
40MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed |
50MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
66MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
80MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
CPU SPEED CONFIGURATION (IMS425 CLOCK) | ||||
Speed | J47 | J48 | J49 | J50 |
20MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed |
25MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
32MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
33MHz | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed |
40MHz | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed |
50MHz | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed |
66MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
80MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
SERIAL PORT 1 CONFIGURATION | |
Port 1 | J7 |
COM1 | pins 1 & 2 closed |
COM3 | pins 2 & 3 closed |
SERIAL PORT 2 CONFIGURATION | |
Port 2 | J2 |
COM2 | pins 1 & 2 closed |
COM4 | pins 2 & 3 closed |