NEC TECHNOLOGIES, INC.
POWERMATE EXPRESS 486SX/25TE, 486/33TE, 486/33TE(ENHANCED), 486/50TE, 486DX2/50TE, POM-2000 (NETT-2000)
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/50MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
256MB (224MB on external memory cards) |
|
Cache |
128KB (location unidentified) |
|
BIOS |
Unidentified |
|
Dimensions |
268mm x 224mm |
|
I/O Options |
External memory cards (2), CPU slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
P1 |
Disk drive power interface |
P6 |
|
LED controller board |
P2 |
CPU slot |
SL1 |
|
Chassis fan power |
P5 |
External memory slots |
SL2-SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Test mode disabled (released position) |
J1 |
Out |
|
Test mode enabled (locked position) |
J1 |
In | |
|
|
Factory configured - do not alter |
JP1 |
Open |
|
|
BIOS type select 28256 |
JP2 |
pins 1 & 2 closed |
|
BIOS type select 28512 |
JP2 |
pins 2 & 3 closed | |
|
|
Flash BIOS write enabled |
JP3 |
pins 1 & 2 closed |
|
Flash BIOS write disabled |
JP3 |
pins 2 & 3 closed | |
|
|
Password enabled |
JP4 |
pins 1 & 2 closed |
|
Password disabled |
JP4 |
pins 2 & 3 closed | |
|
|
Reset disabled |
JP5 |
Open |
|
Reset enabled |
JP5 |
Closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
8MB |
(2) 1M x 36 |
NONE |
NONE |
NONE |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
NONE |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
NONE |
|
18MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
NONE |
|
20MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
22MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
24MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
|
24MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
|
28MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
32MB |
(2) 4M x 36 |
NONE |
NONE |
NONE |
|
32MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
32MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
34MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
36MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
38MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
40MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
40MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
48MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
50MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
52MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
NONE |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
NONE |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
NONE |
|
72MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
NONE |
|
72MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
NONE |
|
80MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
80MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
82MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
84MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
86MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
88MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
88MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
96MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
|
96MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
104MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
112MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
128MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
160MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
192MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
224MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
256MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
Note: The orientation of Banks 0 & 1 are unidentified. Banks 2 - 7 are located on external memory cards. | ||||
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 4 |
Bank 5 |
Bank 6 |
Bank 7 |
|
8MB |
NONE |
NONE |
NONE |
NONE |
|
16MB |
NONE |
NONE |
NONE |
NONE |
|
16MB |
NONE |
NONE |
NONE |
NONE |
|
18MB |
NONE |
NONE |
NONE |
NONE |
|
20MB |
NONE |
NONE |
NONE |
NONE |
|
22MB |
(2) 256K x 36 |
NONE |
NONE |
NONE |
|
24MB |
NONE |
NONE |
NONE |
NONE |
|
24MB |
NONE |
NONE |
NONE |
NONE |
|
28MB |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
32MB |
NONE |
NONE |
NONE |
NONE |
|
32MB |
NONE |
NONE |
NONE |
NONE |
|
32MB |
NONE |
NONE |
NONE |
NONE |
|
34MB |
(2) 256K x 36 |
NONE |
NONE |
NONE |
|
36MB |
(2) 256K x 36 |
(2) 256K x 36 |
NONE |
NONE |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 4 |
Bank 5 |
Bank 6 |
Bank 7 |
|
38MB |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
NONE |
|
40MB |
(2) 1M x 36 |
NONE |
NONE |
NONE |
|
40MB |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
48MB |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
NONE |
|
50MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
NONE |
|
52MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
64MB |
NONE |
NONE |
NONE |
NONE |
|
64MB |
NONE |
NONE |
NONE |
NONE |
|
64MB |
NONE |
NONE |
NONE |
NONE |
|
72MB |
NONE |
NONE |
NONE |
NONE |
|
72MB |
NONE |
NONE |
NONE |
NONE |
|
80MB |
NONE |
NONE |
NONE |
NONE |
|
80MB |
NONE |
NONE |
NONE |
NONE |
|
82MB |
(2) 256K x 36 |
NONE |
NONE |
NONE |
|
84MB |
(2) 256K x 36 |
(2) 256K x 36 |
NONE |
NONE |
|
86MB |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
NONE |
|
88MB |
(2) 1M x 36 |
NONE |
NONE |
NONE |
|
88MB |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
(2) 256K x 36 |
|
96MB |
NONE |
NONE |
NONE |
NONE |
|
96MB |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
NONE |
|
104MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
NONE |
|
112MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
128MB |
NONE |
NONE |
NONE |
NONE |
|
160MB |
(2) 4M x 36 |
NONE |
NONE |
NONE |
|
192MB |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
NONE |
|
224MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
NONE |
|
256MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
Note: The orientation of Banks 0 & 1 are unidentified. Banks 2 - 7 are located on external memory cards. | ||||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Test mode disabled |
15A2 |
pins 1 & 2 closed |
|
Test mode enabled |
15A2 |
pins 2 & 3 closed | |
|
|
Test mode disabled |
15A3 |
pins 1 & 2 closed |
|
Test mode enabled |
15A3 |
pins 2 & 3 closed | |
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The 486/33TE (enhanced) board has the same orientation as the 486/33TE. The 486DX2/50TE board has the same orientation as the 486/50TE. |