DELL COMPUTER CORPORATION
SYSTEM 220
|
Processor |
80286 |
|
Processor Speed |
20MHz |
|
Chip Set |
VLSI |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
362mm x 182mm |
|
I/O Options |
16-bit riser card slot, floppy drive interface, IDE interface parallel port, serial port (2), VGA feature connector, VGA port |
|
NPU Options |
80287-8MHz |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
IDE interface |
CN6 |
|
Parallel port |
CN2 |
VGA feature |
CN7 |
|
Serial port 2 |
CN3 |
Front panel switches & LEDs |
FPSL |
|
Serial port 1 |
CN4 |
16-bit riser card |
S1 |
|
Floppy drive interface |
CN5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
J1 |
unknown | |
|
Factory configured - do not alter |
J2 |
unknown | |
|
Factory configured - do not alter |
J3 |
unknown | |
|
Factory configured - do not alter |
J4 |
unknown | |
|
Monitor type select color |
W1 |
closed | |
|
Monitor type select monochrome |
W1 |
open | |
|
Serial port 2 (CN3) enabled |
W4/pins 1 & 2 |
closed | |
|
Serial port 2 (CN3) disabled |
W4/pins 1 & 2 |
open | |
|
Serial port 1 (CN4) enabled |
W4/pins 3 & 4 |
closed | |
|
Serial port 1 (CN4) disabled |
W4/pins 3 & 4 |
open | |
|
Parallel port (CN2) select LPT1 |
W4/pins 5 & 6 W4/pins 7 & 8 |
open closed | |
|
Parallel port (CN2) select LPT2 |
W4/pins 5 & 6 W4/pins 7 & 8 |
closed open | |
|
Parallel port disabled |
W4/pins 5 & 6 W4/pins 7 & 8 |
open open | |
|
IDE interface (CN6) enabled |
W5 |
closed | |
|
IDE interface (CN6) disabled |
W5 |
open | |
|
Floppy drive interface (CN5) enabled |
W6 |
closed | |
|
Floppy drive interface (CN5) disabled |
W6 |
open | |
|
IDE interleave select 1:1 |
W7 |
pins 2 & 3 closed | |
|
IDE interleave select 3:1 |
W7 |
pins 1 & 2 closed | |
|
VGA port enabled |
W11 |
open | |
|
VGA port disabled |
W11 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W15 W16 |
pins 1 & 2 closed open | |
|
Note:The location of Jumpers W5 and W6 are unverified. | |||
|
BASE MEMORY CONFIGURATION | ||||
|
Select |
W10 |
W12 |
W13 | |
|
640KB |
open |
pins 1 & 2 closed |
pins 2 & 3 closed | |
|
256KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |