DELL COMPUTER CORPORATION
SYSTEMS 4XX/V, 4XXS/V, 4XX/DV, 4XXS/DV
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
33/50(internal)/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
64MB |
|
Cache |
128/256KB |
|
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), VGA feature connector, VGA port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN1 |
VGA connector |
CN8 |
|
Serial port 1 |
CN2 |
VGA feature connector |
CN9 |
|
Serial port 2 |
CN3 |
IDE interface LED |
CN11 |
|
External battery |
CN4 |
Speaker |
CN12 |
|
Parallel port |
CN5 |
Power LED |
CN13 |
|
IDE interface |
CN6 |
Reset switch |
CN14 |
|
Floppy drive interface |
CN7 |
32-bit VESA local bus slots |
SL1 & SL2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Built in VGA subsystem enabled |
JP1 |
Closed |
|
Built in VGA subsystem disabled |
JP1 |
Open | |
|
|
On board VGA disabled |
JP2 |
Closed |
|
|
On board VGA enabled |
JP2 |
Open |
|
|
VGA IRQ9 disabled |
JP3 |
Closed |
|
VGA IRQ9 enabled |
JP3 |
Open | |
|
|
On board mouse enabled (IRQ12) |
JP4 |
Closed |
|
On board mouse disabled (IRQ12) |
JP4 |
Open | |
|
|
Factory configured - do not alter |
JP7 |
Closed |
|
|
80486SX installed in PQFP |
JP10 |
Open |
|
80486SX not installed in PQFP |
JP10 |
Closed | |
|
|
Factory configured - do not alter |
JP11 |
Open |
|
|
256K of cache memory installed |
JP12 |
Closed |
|
Zero or 128K of cache memory installed |
JP12 |
Open | |
|
Note:The exact location of JP11 on system board is unidentified by the manufacturer. | |||
|
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 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U42) |
TAG (U27) |
|
0KB |
NONE |
NONE |
NONE |
NONE |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 16K x 1 |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 1 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP8 |
JP9 |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |||
|
CPU Type |
JP13 |
JP14 |
JP15 |
|
80486SX |
Open |
Open |
pins 2 & 3 closed |
|
80486DX |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
80486DX2 |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP5 |
JP6 |
|
33MHz |
Open |
Closed |
|
50iMHz |
Closed |
Open |
|
66iMHz |
Open |
Closed |