DELL COMPUTER CORPORATION
XPS 486 MIDSIZE
|
Processor |
80486DX2/80486DX4 |
|
Processor Speed |
66(internal)/100(internal)MHz |
|
Chip Set |
Micronics |
|
Max. Onboard DRAM |
64MB |
|
Cache |
256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port 1 |
CN1 |
IDE interface LED |
J1 |
|
Serial port 2 |
CN2 |
Power LED & keylock |
J2 |
|
PS/2 mouse port |
CN3 |
Reset switch |
J3 |
|
Parallel port |
CN4 |
Speaker |
J4 |
|
Floppy drive interface |
CN5 |
Turbo switch |
J5 |
|
IDE interface 1 |
CN6 |
Turbo LED |
J6 |
|
IDE interface 2 |
CN7 |
32-bit VESA Local bus slots |
SL1 & SL2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
W1 |
Closed |
|
|
Monitor type select color |
W2 |
Closed |
|
Monitor type select monochrome |
W2 |
Open | |
|
|
Mouse IRQ12 enabled |
W3 |
Closed |
|
Mouse IRQ12 disabled |
W3 |
Open | |
|
|
CMOS memory clear |
W5 |
Closed |
|
CMOS memory normal operation |
W5 |
Open | |
|
|
Factory configured - do not alter |
W8 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W10 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W11 |
pins 2 & 3 closed |
|
|
CPU type select - Intel DX/DX2/DX4/Pentium Overdrive |
W12 |
pins 1 & 2 closed |
|
CPU type select - Intel SX |
W12 |
pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
W13 |
Open |
|
|
Factory configured - do not alter |
W16 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W17 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W18 |
Open |
|
|
Factory configured - do not alter |
W19 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W22 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W23 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W24 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W25 |
Open |
|
|
IDE port 1 enabled |
W34 |
pins 1 & 2 closed |
|
IDE port 1 disabled |
W34 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
W35 |
Open | |
|
|
Parallel port type select IRQ7 |
W36 |
pins 1 & 2 closed |
|
Parallel port type select IRQ5 |
W36 |
pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
W39 |
Open |
|
|
Factory configured - do not alter |
W40 |
Open |
|
|
Factory configured - do not alter |
SW1/1 |
On |
|
|
Factory configured - do not alter |
SW1/2 |
On |
|
|
Factory configured - do not alter |
SW1/3 |
Off |
|
|
Factory configured - do not alter |
SW1/4 |
Off |
|
Note: The location of the factory configured jumpers is unidentified. | |||
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
DMA CHANNEL CONFIGURATION | ||
|
DMA Channel |
W37 |
W38 |
|
1 |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
3 |
pins 2 & 3 closed |
pins 2 & 3 closed |