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 |