DELL COMPUTER CORPORATION
SYSTEM 486/T
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2/ODP586SX |
|
Processor Speed |
16/20/25/32(internal)/33/40(internal)/40/50(internal)/66(internal) |
|
Chip Set |
Headland |
|
Max. Onboard DRAM |
64MB |
|
SRAM Cache |
128KB (on optional card) |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, bus mouse port parallel port, serial port (2), VGA feature connector, VGA port video memory module connection |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
C1 |
External cache card |
S1 |
|
Bus mouse |
C2 |
External battery |
J1 |
|
Parallel port |
JPAR |
IDE interface LED |
J2 |
|
Serial port 1 & 2 |
JCOM |
Speaker |
J3 |
|
Floppy drive interface |
JFLOP |
Fan |
J4 |
|
IDE drive interface |
JIDE |
Video memory upgrade module |
JVMEM1 |
|
VGA feature connector |
JFEAT |
Video memory upgrade module |
JVMEM2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
External cache enabled |
JCACHE |
closed |
|
External cache disabled |
JCACHE |
open | |
| » |
Password option enabled |
EPWD |
closed |
|
Password option disabled |
EPWD |
open | |
| » |
Factory configured - do not alter |
IOALT |
open |
| » |
Flash BIOS upgrade enabled |
EFLU |
closed |
|
Flash BIOS upgrade disabled (BIOS write protected) |
EFLU |
open | |
| » |
On board VGA interface enabled |
EVGA |
closed |
|
On board VGA interface disabled |
EVGA |
open | |
|
CPU SPEED CONFIGURATION (JP1) | |||||
|
Speed |
pins 1 & 2 |
pins 3 & 4 |
pins 5 & 6 |
pins 7 & 8 |
pins 9 & 10 |
|
16MHz |
closed |
open |
open |
open |
open |
|
20MHz |
open |
closed |
open |
open |
open |
|
25MHz |
open |
open |
closed |
open |
open |
|
33MHz |
open |
open |
open |
closed |
open |
|
40MHz |
open |
open |
open |
open |
closed |
|
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 |
|
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 |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |