COMPAQ COMPUTER CORPORATION
PRESARIO 800
|
Processor |
80486SX/80486SX2/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Compaq |
|
Max. Onboard DRAM |
64MB |
|
Cache |
128KB (on external cache card) |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
External cache card slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA feature connector, VGA port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port |
CN1 |
IDE interface |
CN6 |
|
PS/2 mouse port |
CN2 |
VGA feature connector |
CN7 |
|
Parallel port |
CN3 |
External battery |
J17 |
|
VGA port |
CN4 |
Speaker |
P11 |
|
Floppy drive interface |
CN5 |
External cache card slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Pentium Overdrive mode select write back |
P1 |
Pins 2 & 3 closed |
|
Pentium Overdrive mode select write through |
P1 |
Pins 1 & 2 closed | |
|
» |
On board video enabled |
P5 |
Pins 2 & 3 closed |
|
On board video disabled |
P5 |
Pins 1 & 2 closed | |
|
» |
Parallel port IRQ select IRQ7 |
P8 |
Pins 1 & 2 closed |
|
Parallel port IRQ select IRQ5 |
P8 |
Pins 2 & 3 closed | |
|
» |
CMOS memory normal operation |
P9 |
Closed |
|
CMOS memory clear |
P9 |
Open | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
6MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
|
7MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
9MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
|
10MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
13MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
21MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
NONE |
|
22MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
24MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
|
25MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
28MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
37MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
|
37MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 256K x 36 |
NONE |
|
38MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
40MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
|
40MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 1M x 36 |
NONE |
|
41MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
44MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
52MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
52MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 4M x 36 |
NONE |
|
53MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
|
56MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
|
64MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
Note: When 64MB of memory is installed, Bank 0 is ignored. Do not remove the 1M x 36 from Bank 0. | ||||
|
CPU TYPE CONFIGURATION | |||||
|
Type |
P2 |
P3 |
P4 |
P6 |
P7 |
|
80486SX-25 |
1 & 2 |
1 & 2 |
3 & 4 |
1 & 2 |
1 & 2 |
|
80486SX-33 |
1 & 2 |
1 & 2 |
3 & 4 |
1 & 2 |
2 & 3 |
|
80487SX-25 |
1 & 2 |
1 & 2 |
3 & 4 |
1 & 2 |
1 & 2 |
|
80486DX-25 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
80486DX-33 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
80486SX2-66 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
80486DX2-50 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
80486DX2-66 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
ODP |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
N/A |
|
ODPR |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
N/A |
|
Pentium ODP |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
N/A |
|
Note: N/A - jumper setting depends on processor speed. Pins designated should be in the closed position. | |||||
|
CPU SPEED CONFIGURATION | |
|
Speed |
P7 |
|
25MHz |
Pins 1 & 2 closed |
|
33MHz |
Pins 2 & 3 closed |
|
50iMHz |
Pins 1 & 2 closed |
|
66iMHz |
Pins 2 & 3 closed |