DELL COMPUTER CORPORATION
SYSTEM V486/XX SDT REV. 3
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
LSI |
|
Max. Onboard DRAM |
64MB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Parallel port connector |
CN1 |
IDE interface |
CN5 |
|
Serial port 1 |
CN2 |
VGA connector |
CN6 |
|
Serial port 2 |
CN2 |
Fan connector |
CN7 |
|
PS/2 mouse port |
CN3 |
IDE interface LED |
CN8 |
|
Floppy drive interface |
CN4 |
External battery connector |
CN9 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Mouse connector enabled at IRQ12 |
J1 |
Closed |
|
Mouse connector disabled |
J1 |
Open | |
|
» |
I/O address is 26Eh-26Fh |
J2 |
Closed |
|
I/O address is 398h-399h |
J2 |
Open | |
|
» |
Factory configured do not alter |
J3 |
Open |
|
» |
Factory configured do not alter |
J4 |
Closed |
|
» |
Enables password feature |
J5 |
Closed |
|
Disables password feature |
J5 |
Closed | |
|
» |
Enables on-board VGA controller |
J6 |
Closed |
|
Disables on-board VGA controller |
J6 |
Open | |
|
» |
Factory configured do not alter |
J7 |
Open |
|
» |
Factory configured do not alter |
J10 |
Open |
|
» |
Factory configured do not alter |
J11 |
Open |
|
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) 4M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
24MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
28MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
36MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
|
40MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
52MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
J8 |
J9 |
|
25MHz |
Open |
Closed |
|
33MHz |
Closed |
Open |
|
50iMHz |
Open |
Closed |
|
66iMHz |
Closed |
Open |
|
VRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512K |
(4) 256K x 4 |
None |
|
1MB |
(4) 256K x 4 |
(4) 256K x 4 |
|
Note:Bank 0 is factory installed and not configurable. | ||