UNIDENTIFIED
3486HN CACHE MAINBOARD
|
Processor |
AM386DX/80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
80387DX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J2 |
Turbo LED |
J44 |
|
Power LED & keylock |
J42 |
Reset switch |
J45 |
|
Turbo switch |
J43 |
Speaker |
J46 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CMOS memory normal operation |
J3 |
pins 2 & 3 closed |
|
CMOS memory clear |
J3 |
pins 1 & 2 closed | |
|
» |
80386 speed select 33MHz |
J4 |
Closed |
|
80386 speed select 40MHz |
J4 |
Open | |
|
» |
Factory configured - do not alter |
J5 |
N/A |
|
» |
Monitor type select color |
J6 |
Closed |
|
Monitor type select monochrome |
J6 |
Open | |
|
» |
80386 PQFP CPU disabled |
J24 |
Closed |
|
80386 PQFP CPU enabled |
J24 |
Open | |
|
» |
80486 PQFP CPU disabled |
J27 |
Closed |
|
80486 PQFP CPU enabled |
J27 |
Open | |
|
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 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U29) |
TAG (U30) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
NONE |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
J34 |
J36 |
J37 |
J38 |
|
64KB |
Open |
pins 2 & 3 closed |
Open |
Open |
|
128KB |
Closed |
pins 1 & 2 closed |
Closed |
Open |
|
256KB |
Closed |
pins 2 & 3 closed |
Closed |
Closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
J23 |
J31 |
|
80386DX |
pins 1 & 2 closed |
Open |
|
CX486DLC |
pins 1 & 2 closed |
Open |
|
80486SX/DX/DX2 |
pins 2 & 3 closed |
Closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
J25 |
J26 |
|
Cyrix |
Closed |
Closed |
|
AMD/Intel |
Open |
Open |
|
CPU TYPE CONFIGURATION | |||
|
Type |
J28 |
J29 |
J41 |
|
80486SX (PQFP) |
Closed |
pins 2 & 3 closed |
Open |
|
80486 (PGA) |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
80486DX/DX2 |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
J39 |
J40 |
|
80386DX |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
CX486DLC |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
80486DX2 |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU CLOCK SPEED CONFIGURATION | ||
|
Speed |
J30 |
J32 |
|
40MHz |
Closed |
Closed |
|
50MHz |
Closed |
Open |
|
66MHz |
Open |
Closed |
|
80MHz |
Open |
Open |