SILICON STAR INTERNATIONAL, INC.
PI4/PI4T PCI
Processor | 80486SX/SL80486SX/CX486M7/AM486DX/AM486DXL PLUS/80486DX/ SL80486DX2/AM486DX2/80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 128MB |
Cache | 128/256/512/1024KB |
BIOS | AMI/Award |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit PCI bus slots (3), green PC connector, IDE interfaces (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J3 | Speaker | J10 |
IDE interface (primary) | J4 | Power LED & keylock | J11 |
IDE interface (secondary) | J5 | IDE interface LED | JP10 |
Green PC connector | J6 | IDE interface LED | JP11 |
Turbo LED | J7 | Green PC connector | JP38 |
Reset switch | J8 | 32-bit PCI bus slots | SL1 - SL3 |
Turbo switch | J9 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CX486S2 CPU not installed | JP1 | Open |
CX486S2 CPU installed | JP1 | Closed | |
» | Cache type select write back (P24D only) | JP2 | pins 1 & 2 closed |
Cache type select write through (P24D only) | JP2 | pins 2 & 3 closed | |
» | Cache type select write back (P24T only) | JP3 | pins 1 & 2 closed |
Cache type select write through (P24T only) | JP3 | pins 2 & 3 closed | |
» | Primary IDE IRQ14 enabled | JP12 | Closed |
Primary IDE IRQ14 disabled | JP12 | Open | |
» | Secondary IDE IRQ15 enabled | JP13 | Closed |
Secondary IDE IRQ15 disabled | JP13 | Open | |
» | Factory configured - do not alter | JP14 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP26 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP27 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP28 | pins 2 & 3, 4 & 5 closed |
» | Factory configured - do not alter | JP40 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP43 | pins 2 & 3 closed |
» | Monitor type select color | JP44 | Closed |
Monitor type select monochrome | JP44 | Open | |
Note: The location of the factory configured jumpers is unidentified. |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
5MB | (1) 256K x 36 | (1) 1M x 36 | NONE | NONE |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
8MB | (1) 2M x 36 | NONE | NONE | NONE |
12MB | (1) 512K x 36 | (1) 512K x 36 | (1) 1M x 36 | (1) 1M x 36 |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | NONE |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
17MB | (1) 256K x 36 | (1) 4M x 36 | NONE | NONE |
20MB | (1) 512K x 36 | (1) 512K x 36 | (1) 4M x 36 | NONE |
20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
24MB | (1) 512K x 36 | (1) 512K x 36 | (1) 1M x 36 | (1) 4M x 36 |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | NONE |
24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | NONE |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
32MB | (1) 8M x 36 | NONE | NONE | NONE |
36MB | (1) 512K x 36 | (1) 512K x 36 | (1) 4M x 36 | (1) 4M 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 |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x 36 | NONE |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | NONE |
48MB | (1) 4M x 36 | (1) 8M x 36 | NONE | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 16M x 36 | NONE | NONE | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x 36 | NONE |
64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
65MB | (1) 256K x 36 | (1) 16M x 36 | NONE | NONE |
68MB | (1) 1M x 36 | (1) 16M x 36 | NONE | NONE |
68MB | (1) 1M x 36 | (1) 8M x 36 | (1) 8M x 36 | NONE |
72MB | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x 36 | NONE |
72MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x 36 | (1) 8M x 36 |
80MB | (1) 4M x 36 | (1) 16M x 36 | NONE | NONE |
80MB | (1) 4M x 36 | (1) 8M x 36 | (1) 8M x 36 | NONE |
96MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x 36 | NONE |
96MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x 36 | (1) 8M x 36 |
96MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | NONE |
128MB | (1) 16M x 36 | (1) 16M x 36 | NONE | NONE |
128MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
256KB | (4) 64K x 8 | NONE | (1) 32K x 8 |
512KB | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 |
512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP23 | JP24 | JP25 | JP36 | JP37 |
128KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
256KB | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3, 4 & 5 |
256KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
512KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3, 4 & 5 |
512KB | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
1MB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3, 4 & 5 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||||
Type | JP4 | JP7 | JP8 | JP9 | JP15 |
80486SX | 1 & 2, 3 & 4 | Open | Open | 2 & 3 | Open |
SL80486SX | 1 & 2, 3 & 4 | 3 & 4 | Open | 2 & 3 | Open |
CX486M7 (3v) | Open | 2 & 3 | 2 & 3 | 1 & 2, 3 & 4 | 3 & 4 |
CX486M7 (5v) | 1 & 2, 3 & 4 | 2 & 3 | 2 & 3 | 1 & 2, 3 & 4 | 3 & 4 |
AM486DX/DX2 (5v) | 1 & 2, 3 & 4 | Open | Open | 1 & 2, 3 & 4 | 3 & 4 |
AM486DX2/DX4 (3v) | Open | Open | Open | 1 & 2, 3 & 4 | 3 & 4 |
AM486DXL PLUS | 1 & 2, 3 & 4 | 3 & 4 | Open | 1 & 2, 3 & 4 | 3 & 4 |
80486DX/DX2 | 1 & 2, 3 & 4 | Open | Open | 1 & 2, 3 & 4 | 3 & 4 |
SL80486DX/DX2 | 1 & 2, 3 & 4 | 3 & 4 | Open | 1 & 2, 3 & 4 | 3 & 4 |
80486DX4 | Open | 3 & 4 | Open | 1 & 2, 3 & 4 | 3 & 4 |
P24D | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | Open | 1 & 2, 3 & 4 | 3 & 4 |
P24T | 1 & 2, 3 & 4 | 3 & 4 | 1 & 2 | 1 & 2, 3 & 4 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | ||||
Type | JP16 | JP17 | JP18 | JP19 |
80486SX | 2 & 3 | Open | Open | Open |
SL80486SX | 2 & 3 | Open | 1 & 2 | Open |
CX486M7 (3v) | 1 & 2 | Open | 1 & 2 | Open |
CX486M7 (5v) | 1 & 2 | Open | 1 & 2 | Open |
AM486DX/DX2 (5v) | Open | Open | Open | Open |
AM486DX2/DX4 (3v) | Open | Open | Open | Open |
AM486DXL PLUS | 2 & 3 | Open | 1 & 2 | 2 & 3 |
80486DX/DX2 | 2 & 3 | Open | Open | Open |
SL80486DX/DX2 | 2 & 3 | Open | 1 & 2 | Open |
80486DX4 | 2 & 3 | Open | 1 & 2 | Open |
P24D | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
P24T | 1 & 2 | 1 & 2 | 1 & 2 | Open |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | ||||
Type | JP20 | JP21 | JP22 | JP39 |
80486SX | Open | Open | Open | 1 & 2 |
SL80486SX | 2 & 3 | 1 & 2 | 4 & 5 | 1 & 2 |
CX486M7 (3v) | 1 & 2 | Open | 2 & 3 | 1 & 2 |
CX486M7 (5v) | 1 & 2 | Open | 2 & 3 | 1 & 2 |
AM486DX/DX2 (5v) | Open | Open | Open | 1 & 2 |
AM486DX2/DX4 (3v) | Open | Open | Open | 1 & 2 |
AM486DXL PLUS | 2 & 3 | 4 & 5 | 4 & 5 | 1 & 2 |
80486DX/DX2 | Open | Open | Open | 1 & 2 |
SL80486DX/DX2 | 2 & 3 | 1 & 2 | 4 & 5 | 1 & 2 |
80486DX4 | 2 & 3 | 1 & 2 | 4 & 5 | Open |
P24D | 2 & 3 | 2 & 3 | 4 & 5 | 1 & 2 |
P24T | 2 & 3 | Open | 1 & 2 | 1 & 2 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | |||||
Type | JP46 | JP47 | JP48 | JP49 | JP50 |
AM486DX2 | Open | Closed | Open | Closed | Closed |
CX486DX2-50 | Closed | Open | Open | Open | Open |
CX486DX2-66 | Open | Open | Closed | Open | Open |
CX486DX2-80 | Open | Open | Open | Closed | Open |
AM486DX/DX4 | Open | Closed | Open | Closed | Open |
80486DX4-75 | Closed | Open | Open | Open | Open |
80486DX4-100 | Open | Closed | Open | Closed | Open |
Note: Pins designated should be in the closed position. These settings used only if JP4 is open. |
CPU SPEED CONFIGURATION | ||||
Speed | JP30 | JP31 | JP32 | JP33 |
25MHz | Open | Open | Open | pins 1 & 2 closed |
33MHz | Open | Closed | Closed | pins 1 & 2 closed |
40MHz | Open | Open | Closed | pins 2 & 3 closed |
50iMHz | Open | Open | Open | pins 1 & 2 closed |
50MHz | Open | Closed | Open | pins 2 & 3 closed |
66iMHz | Open | Closed | Closed | pins 1 & 2 closed |
75iMHz | Open | Open | Open | pins 1 & 2 closed |
80iMHz | Open | Open | Closed | pins 2 & 3 closed |
100iMHz | Open | Closed | Closed | pins 1 & 2 closed |
CMOS DISCHARGE CONFIGURATION | ||
Setting | JP6 | JP35 |
CMOS memory normal operation | pins 1 & 2 closed | pins 1 & 2 closed |
CMOS memory clear | pins 2 & 3 closed | pins 2 & 3 closed |