786 ACIO VESA (VER. 2) Motherboard Settings and Configuration
UNIDENTIFIED
786 ACIO VESA (VER. 2)
Device Type | Mainboard |
Processor | 80386DX/CX486DLC/80486SX/80486DX/80486DX2 |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | Unidentified |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (2) |
NPU Options | 80387DX |
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 slot | S1 |
Reset switch | J6 | 32-bit VESA Local bus slot | S2 |
USER CONFIGURABLE SETTINGS | ||||||||||||||
Function | Jumper | Position | ||||||||||||
» | Monitor type select color | J3 | Closed | |||||||||||
| Monitor type select monochrome | J3 | Open | |||||||||||
» | 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 enabled | JMP4 | Pins 2 & 3 closed | |||||||||||
| NPU disabled | JMP4 | Pins 1 & 2 closed | |||||||||||
» | Factory configured - do not alter | JMP7 | Closed | |||||||||||
» | Factory configured - do not alter | JMP13 | Pins 1 & 2 closed | |||||||||||
VESA BUS SELECTION | |||||||||||||||||||||||||
Function | JMP6 | JMP14 | JMP15 | ||||||||||||||||||||||
| 466-50MHz VESA local bus enabled | Open | 1 & 2 | 1 & 2 | |||||||||||||||||||||
| All other VESA local busses enabled | Closed | 2 & 3 | 2 & 3 | |||||||||||||||||||||
Note: Pins designated should be in the closed position. | |||||||||||||||||||||||||
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) 1M x 9 | (4) 256K x 9 |
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/U26 | TAG/U27 |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JMP1A | JMP1B | JMP1C | JMP8 |
64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2, 4 & 5 |
128KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3, 4 & 5 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3, 5 & 6 |
Note:Pins designated should be in the closed position. | ||||
CPU TYPE CONFIGURATION | ||
Type | JMP2 | JMP5 |
80386DX | 2 & 3 | Closed |
CX486DLC | Open | Open |
80486SX | 1 & 2 | Open |
80486DX | 2 & 3 | Open |
80486DX2 | 2 & 3 | Open |
Note:Pins designated should be in the closed position. | ||
CPU SPEED CONFIGURATION | |
Speed | JMP9 |
80386DX/25MHz | Pins 1 & 5 and 2 & 6 closed |
80386DX/33MHz | Pins 1 & 5 and 4 & 8 closed |
80386DX/40MHz | Pins 1 & 5, 3 & 7 and 4 & 8 closed |
CX486DLC-33 | Pins 1 & 5 and 4 & 8 closed |
CX486DLC-40 | Pins 1 & 5, 3 & 7 and 4 & 8 closed |
80486SX-33 | Pins 4 & 8 closed |
80486DX/50MHz | Pins 3 & 7 closed |
80486DX/25MHz | Pins 2 & 6 closed |
80486DX/33MHz | Pins 4 & 8 closed |
80486DX2/50i MHz | Pins 2 & 6 closed |
80486DX2/66i MHz | Pins 4 & 8 closed |
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