UNIDENTIFIED
US3486-33/50C(USAi)
|
Processor |
80386SX/80386DX/CX486DLC/80486SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40(internal)/50(internal)/50/66(internal)MHz |
|
Chip Set |
USAi |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
230mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
80387 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J2 |
External battery |
J7 |
|
Turbo switch |
J4 |
Speaker |
J100 |
|
Turbo LED |
J5 |
32-bit VESA Local bus slots |
SL1 & SL2 |
|
Reset switch |
J6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Monitor type select monochrome |
J3 |
Open |
|
Monitor type select color |
J3 |
Closed | |
|
» |
CMOS memory normal operation (Internal Battery) |
JMP3 |
pins 2 & 3 closed |
|
CMOS memory normal operation (External Battery) |
JMP3 |
pins 1 & 2 closed | |
|
CMOS memory clear |
JMP3 |
pins 2 & 4 closed | |
|
» |
NPU disabled |
JMP4 |
pins 2 & 3 closed |
|
NPU enabled |
JMP4 |
pins 1 & 2 closed | |
|
» |
CPU type select 80386DX not installed |
JMP5 |
Open |
|
CPU type select 80386DX installed |
JMP5 |
Closed | |
|
» |
CPU type select 80486DX-50 not installed |
JMP7 |
Open |
|
CPU type select 80486DX-50 installed |
JMP7 |
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JMP1 |
JMP8 |
|
64KB |
pins 1 & 2, 4 & 5, 7 & 8 closed |
pins 1 & 2, 4 & 5 closed |
|
128KB |
pins 2 & 3, 5 & 6, 8 & 9 closed |
pins 2 & 3, 5 & 6 closed |
|
256KB |
pins 2 & 3, 5 & 6, 8 & 9 closed |
pins 2 & 3, 5 & 6 closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
JMP10 |
JMP12 |
|
80386 |
pins 2 & 5, 3 & 6 closed |
Open |
|
80486 |
Open |
Closed |
|
CPU TYPE CONFIGURATION | |
|
Type |
JMP2 |
|
80486SX |
pins 1 & 2 closed |
|
80486DX |
pins 2 & 3 closed |
|
CPU SPEED CONFIGURATION | |
|
Speed |
JMP9 |
|
20MHz |
pins 2 & 6, 3 & 7 closed |
|
25MHz |
pins 2 & 6, 4 & 8 closed |
|
33MHz |
pins 3 & 7, 4 & 8 closed |
|
40MHz |
pins 2 & 6 closed |
|
50MHz |
pins 3 & 7 closed |
|
66iMHz |
pins 1 & 5, 3 & 7, 4 & 8 closed |
|
VESA BUS SPEED CONFIGURATION | |
|
Speed |
JMP6 |
|
80486DX-33/DX2-66 |
pins 1 & 4, 3 & 6 closed |
|
80486DX-50 |
pins 1 & 4 closed |