KT TECHNOLOGY PTE LTD.
386SX NON-CACHE MAINBOARD
| Processor | 80386SX | 
| Processor Speed | 16/20/25/33MHz | 
| Chip Set | Acer | 
| Max. Onboard DRAM | 16MB | 
| Cache | None | 
| BIOS | AMI | 
| Dimensions | 220mm x 170mm | 
| I/O Options | None | 
| NPU Options | 80387SX | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| External battery | J4 | Turbo LED & switch | J8 | 
| Reset switch | J6 | Power LED & keylock | J9 | 
| Speaker | J7 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | ADS delay select enabled | J5 | pins 1 & 2 closed | 
| ADS delay select disabled | J5 | pins 2 & 3 closed | |
| » | NPU synchronous with CPU | JP2 | pins 1 & 2 closed | 
| NPU asynchronous with CPU | JP2 | pins 2 & 3 closed | |
| » | CMOS type select 1287 | JP3 | Closed | 
| CMOS type select 146818 | JP3 | Open | |
| » | Monitor type select color | JP4 | pins 2 & 3 closed | 
| Monitor type select monochrome | JP4 | pins 1 & 2 closed | |
| » | Parity check enabled | JP6 | Closed | 
| Parity check disabled | JP6 | Open | |
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 512KB | (1) 256K x 9 | (1) 256K x 9 | NONE | NONE | 
| 1MB | (1) 256K x 9 | (1) 256K x 9 | (1) 256K x 9 | (1) 256K x 9 | 
| 2MB | (1) 1M x 9 | (1) 1M x 9 | NONE | NONE | 
| 4MB | (1) 1M x 9 | (1) 1M x 9 | (1) 1M x 9 | (1) 1M x 9 | 
| 8MB | (1) 4M x 9 | (1) 4M x 9 | NONE | NONE | 
| 16MB | (1) 4M x 9 | (1) 4M x 9 | (1) 4M x 9 | (1) 4M x 9 | 
| CPU SPEED CONFIGURATION | ||
| Speed | JP1 | JP5 | 
| 16Mhz | pins 1 & 2 closed | pins 1 & 2 closed | 
| 20Mhz | pins 2 & 3 closed | pins 1 & 2 closed | 
| 25MHz | pins 1 & 2 closed | pins 1 & 2 closed | 
| 33MHz | pins 2 & 3 closed | pins 2 & 3 closed |