DEICO ELECTRONICS, INC.
486DSX
Processor | 80486SX/80486DX |
Processor Speed | 20/25/33MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | Parallel port, serial ports (2), floppy drive interface, IDE interface |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Reset switch | J1 | Serial port 1 | J21 |
Turbo LED | J2 pins 1 & 2 | Serial port 2 | J22 |
Turbo switch | J2 pins 3 & 4 | Power LED & keylock | J23 |
External battery | J10 | Speaker | J24 |
Floppy drive interface | J19 | Parallel port | J27 |
IDE interface | J20 | IDE interface LED | J28 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | pins 1 & 2 closed |
Monitor type select monochrome | JP1 | pins 2 & 3 closed | |
» | CMOS battery select internal | JP2 | pins 1 & 2 closed |
CMOS battery select external | JP2 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP3 | pins 1 & 2 closed |
» | System clock speed select OSC/2 | JP4 | pins 2 & 3 closed |
System clock speed select OSC/1 | JP4 | pins 1 & 2 closed | |
» | CMOS memory normal operation | JP14 | pins 1 & 2 closed |
CMOS memory clear | JP14 | pins 2 & 3 closed | |
» | IRQ4 select serial port 1 (J21) | JP15 | pins 2 & 3 closed |
IRQ4 select serial port 2 (J22) | JP15 | pins 1 & 2 closed | |
IRQ4 disabled | JP15 | pins 3 & 4 closed | |
IRQ3 select serial port 1 (J21) | JP16 | pins 2 & 3 closed | |
» | IRQ3 select serial port 2 (J22) | JP16 | pins 1 & 2 closed |
IRQ3 disabled | JP16 | pins 3 & 4 closed | |
IRQ9 select serial port 1 (J21) | JP17 | pins 2 & 3 closed | |
IRQ9 select serial port 2 (J22) | JP17 | pins 1 & 2 closed | |
» | IRQ9 disabled | JP17 | pins 3 & 4 closed |
IRQ5 select serial port 1 (J21) | JP18 | pins 2 & 3 closed | |
IRQ5 select serial port 2 (J22) | JP18 | pins 1 & 2 closed | |
» | IRQ5 disabled | JP18 | pins 3 & 4 closed |
» | Parallel port (J27) select IRQ7 | JP19 | pins 1 & 2 closed |
Parallel port (J27) select IRQ5 | JP19 | pins 2 & 3 closed | |
Parallel port (J27) select no interrupt | JP19 | pins 3 & 4 closed | |
» | IDE on-board interface enabled | JP25 | pins 1 & 2 closed |
IDE on-board interface disabled | JP25 | pins 2 & 3 closed | |
» | Floppy on-board interface enabled | JP26 | pins 1 & 2 closed |
Floppy on-board interface disabled | JP26 | pins 2 & 3 closed | |
» | Serial port 1 (J21) select COM1 | JP27 | pins 1 & 2 closed |
Serial port 1 (J21) select COM3 | JP27 | pins 2 & 3 closed | |
Serial port 1 (J21) disabled | JP27 | pins 3 & 4 closed | |
» | Serial port 2 (J22) select COM2 | JP28 | pins 1 & 2 closed |
Serial port 2 (J22) select COM4 | JP28 | pins 2 & 3 closed | |
Serial port 2 (J22) disabled | JP28 | pins 3 & 4 closed | |
» | Parallel port (J27) select LPT1 | JP29 | pins 1 & 2 closed |
Parallel port (J27) select LPT2 | JP29 | pins 2 & 3 closed | |
Parallel port (J27) disabled | JP29 | pins 3 & 4 closed |
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 |
64KB | (8) 8K x 8 |
256KB | (8) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size | JP9 | JP10 |
64KB | pins 2 & 3 closed | pins 2 & 3 closed |
256KB | pins 1 & 2 closed | pins 1 & 2 closed |
CPU TYPE CONFIGURATION | |||
Type | JP5 | JP6 | JP7 |
80486SX | pins 3 & 4 closed | pins 3 & 4 closed | pins 3 & 4 closed |
80487SX | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |