COMPAQ COMPUTER CORPORATION
PRESARIO CDS 774/972/974/982/992
PRESARIO CDTV 978
|
Processor |
Pentium |
|
Processor Speed |
75/90/100MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
136MB |
|
Cache |
256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, modem port, CD-ROM audio connector, modem audio connector, video memory interface |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
Video memory connector |
J4, J12 |
|
PS/2 mouse port |
CN2 |
External battery |
J5 |
|
Keyboard port |
CN3 |
Modem audio connector |
J7 |
|
Modem port |
CN4 |
CD-ROM audio connector |
J10 |
|
Modem port |
CN5 |
Serial port 2 |
J14 |
|
Serial port 1 |
CN6 |
VGA feature connector |
J20 |
|
Parallel port |
CN7 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Factory configured - do not alter |
J16 |
N/A |
|
» |
CMOS memory normal operation |
P2 |
Closed |
|
CMOS memory clear |
P2 |
Open | |
|
» |
Password enabled |
P3 |
pins 1 & 2 closed |
|
Password disabled |
P3 |
pins 2 & 3 closed | |
|
» |
CPU core to bus ratio speed select 1.5x |
P11 |
pins 1 & 2 closed |
|
CPU core to bus ratio speed select 2x |
P11 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION (75MHZ CPU ONLY) | |||
|
Size |
Bank 0A |
Bank 0 |
Bank 1 |
|
20MB |
12MB |
(2) 1M x 36 |
NONE |
|
28MB |
12MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
28MB |
12MB |
(2) 2M x 36 |
NONE |
|
36MB |
12MB |
(2) 1M x 36 |
(2) 2M x 36 |
|
36MB |
12MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
44MB |
12MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
44MB |
12MB |
(2) 4M x 36 |
NONE |
|
52MB |
12MB |
(2) 1M x 36 |
(2) 4M x 36 |
|
52MB |
12MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
60MB |
12MB |
(2) 2M x 36 |
(2) 4M x 36 |
|
60MB |
12MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
76MB |
12MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
76MB |
12MB |
(2) 8M x 36 |
NONE |
|
84MB |
12MB |
(2) 1M x 36 |
(2) 8M x 36 |
|
84MB |
12MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
92MB |
12MB |
(2) 2M x 36 |
(2) 8M x 36 |
|
92MB |
12MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
108MB |
12MB |
(2) 4M x 36 |
(2) 8M x 36 |
|
108MB |
12MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
136MB |
12MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
Note: Bank 0A is factory installed and is not configurable. Only 8MB of the onboard memory is used when 136MB is installed. | |||
|
DRAM CONFIGURATION (75MHZ & 90MHZ CPU ONLY) | |||
|
Size |
Bank 0A |
Bank 0 |
Bank 1 |
|
16MB |
8MB |
(2) 1M x 36 |
NONE |
|
24MB |
8MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
24MB |
8MB |
(2) 2M x 36 |
NONE |
|
32MB |
8MB |
(2) 1M x 36 |
(2) 2M x 36 |
|
32MB |
8MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
40MB |
8MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
40MB |
8MB |
(2) 4M x 36 |
NONE |
|
48MB |
8MB |
(2) 1M x 36 |
(2) 4M x 36 |
|
48MB |
8MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
DRAM CONFIGURATION (75MHZ & 90MHZ CPU ONLY CON’T) | |||
|
Size |
Bank 0A |
Bank 0 |
Bank 1 |
|
56MB |
8MB |
(2) 2M x 36 |
(2) 4M x 36 |
|
56MB |
8MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
72MB |
8MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
72MB |
8MB |
(2) 8M x 36 |
NONE |
|
80MB |
8MB |
(2) 1M x 36 |
(2) 8M x 36 |
|
80MB |
8MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
88MB |
8MB |
(2) 2M x 36 |
(2) 8M x 36 |
|
88MB |
8MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
104MB |
8MB |
(2) 4M x 36 |
(2) 8M x 36 |
|
104MB |
8MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
136MB |
8MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
Note: Bank 0A is factory installed and is not configurable. | |||
|
DRAM CONFIGURATION (100MHZ CPU ONLY) | |||
|
Size |
Bank 0A |
Bank 0 |
Bank 1 |
|
24MB |
16MB |
(2) 1M x 36 |
NONE |
|
32MB |
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
32MB |
16MB |
(2) 2M x 36 |
NONE |
|
40MB |
16MB |
(2) 1M x 36 |
(2) 2M x 36 |
|
40MB |
16MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
48MB |
16MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
48MB |
16MB |
(2) 4M x 36 |
NONE |
|
56MB |
16MB |
(2) 1M x 36 |
(2) 4M x 36 |
|
56MB |
16MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
64MB |
16MB |
(2) 2M x 36 |
(2) 4M x 36 |
|
64MB |
16MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
80MB |
16MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
80MB |
16MB |
(2) 8M x 36 |
NONE |
|
88MB |
16MB |
(2) 1M x 36 |
(2) 8M x 36 |
|
88MB |
16MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
96MB |
16MB |
(2) 2M x 36 |
(2) 8M x 36 |
|
96MB |
16MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
112MB |
16MB |
(2) 4M x 36 |
(2) 8M x 36 |
|
112MB |
16MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
136MB |
16MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
Note: Bank 0A is factory installed and is not configurable. Only 8MB of the onboard memory is used when 136MB is installed. | |||
|
CACHE CONFIGURATION |
|
Note: This board is factory installed with 256KB. It is not configurable. |
|
CPU BUS SPEED CONFIGURATION | |
|
Speed |
P5 |
|
50MHz |
pins 2 & 3 closed |
|
60MHz |
pins 1 & 2 closed |
|
VIDEO MEMORY CONFIGURATION |
|
Note: To upgrade video memory, install video module on jumpers J4 & J12. |