DELL COMPUTER CORPORATION
Precision 386SX/16, Precision 386SX/25
|
Processor |
80386SX |
|
Processor Speed |
16/25MHz |
|
Chip Set |
VLSI |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Bus mouse port, floppy interface, IDE interface, parallel port, serial ports (2), VGA port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Internal battery holder |
BAT |
Bus mouse |
MSE |
|
Serial port 1 |
COM1 |
Power LED & keylock |
PLK |
|
Serial port 2 |
COM2 |
Reset switch |
RST |
|
Floppy drive interface |
FDD |
Speaker |
SPK |
|
IDE interface LED |
HDL |
Turbo LED |
TLD |
|
IDE interface |
IDE |
VGA port |
VGA |
|
Parallel port |
LPT | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
VGA interrupt request select none |
JP1 |
pins 1 & 2 closed | |
|
VGA interrupt request select IRQ9 |
JP1 |
pins 2 & 3 closed | |
|
VGA port enabled |
JP2 |
pins 1 & 2 closed | |
|
VGA port disabled |
JP2 |
pins 2 & 3 closed | |
|
IDE drives installed select one |
JP3 |
pins 1 & 2 closed | |
|
IDE drives installed select two |
JP3 |
pins 2 & 3 closed | |
|
Pipeline mode enabled |
JP4 |
pins 2 & 3 closed | |
|
Pipeline mode disabled |
JP4 |
pins 1 & 2 closed | |
|
Floppy drive interface disk change signal disabled |
JP5 |
pins 1 & 2 closed | |
|
Floppy drive interface disk change signal enabled |
JP5 |
pins 2 & 3 closed | |
|
Monitor type select color |
JP6 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
JP6 |
pins 2 & 3 closed | |
|
CMOS memory normal operation |
JP7 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP7 |
pins 1 & 2 closed | |
|
Monitor type select standard VGA |
SW1/1 |
Off | |
|
Monitor type select NEC MultiSync I (only) |
SW1/1 |
On | |
|
Monitor type select PS/2 style VGA |
SW1/2 |
On | |
|
Monitor type select AT style VGA |
SW1/2 |
Off | |
|
Monitor type select 1024 x 768 interlaced |
SW1/5 |
On | |
|
Monitor type select 1024 x 768 non-interlaced |
SW1/5 |
Off | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
2.5MB |
(2) 1M x 9 |
(2) 256K x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
|
8.5MB |
(2) 4M x 9 |
(2) 256K x 9 |
|
10MB |
(2) 4M x 9 |
(2) 1M x 9 |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
|
Note:The on-board VGA interface will not function with less than 1MB of DRAM installed | ||
|
VGA REFRESH CONFIGURATION | |||
|
Refresh rate |
SW1/3 |
SW1/4 | |
|
800 x 600 x 16 at 56Hz or 800 x 600 x 256 at 56Hz |
On |
On | |
|
800 x 600 x 16 at 72Hz or 800 x 600 x 256 at 56Hz |
On |
Off | |
|
800 x 600 x 16 at 60Hz or 800 x 600 x 256 at 60Hz |
Off |
On | |
|
800 x 600 x 16 at 72Hz or 800 x 600 x 256 at 60Hz |
Off |
Off | |
|
VRAM CONFIGURATION | |
|
Size |
Bank 0 |
|
256KB |
NONE |
|
512KB |
(2) 44256 ZIPPs |