JOINDATA SYSTEMS, INC.
G386U
| Processor | 80386DX | 
| Processor Speed | 33/40MHz | 
| Chip Set | UMC | 
| Max. onboard DRAM | 32MB | 
| Cache | 32/64/128/256KB | 
| BIOS | AMI | 
| Dimensions | 330mm x 218mm | 
| I/O Options | None | 
| NPU Options | 80387DX | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Reset switch | J9 | Speaker | J12 | 
| Turbo LED | J10 | Power LED & keylock | J13 | 
| Turbo switch | J11 | External battery | J14 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | Factory configured - do not alter | J1 | Unknown | 
| » | Factory configured - do not alter | J2 | Unknown | 
| » | NPU enabled | W1 & W10 | Closed | 
| NPU disabled | W1 & W10 | Open | |
| » | Monitor type select color | W11 | Closed | 
| Monitor type select monochrome | W11 | Open | |
| » | CMOS memory normal operation (Internal Battery) | W9 | Closed | 
| CMOS memory normal operation (External Battery) | W9 | 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 | 
| 32MB | (4) 4M x 9 | (4) 4M x 9 | 
| CACHE CONFIGURATION | |||
| Size | U21, U22, U23, & U24 | U15, U16, U17, & U18 | TAG | 
| 32KB | (4) 8K x 8 | NONE | (2) 16K x 4 | 
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (2) 16K x 4 | 
| 128KB | (4) 32K x 8 | NONE | (2) 64K x 4 | 
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 64K x 4 | 
| Note:U21 - U24 and U15 - U18 may be located on the system board. | |||
| CACHE JUMPER CONFIGURATION | |||||
| Size | W3 | W4 | W5 | W6 | W7 | 
| 32KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | Open | 
| 64KB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | Open | 
| 128KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | 
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | 
| Note:Pins designated should be in the closed position. | |||||
| NPU CLOCK CONFIGURATION | |||
| Mode | OSC2 | W8 | W9 | 
| Synchronous | Not installed | pins 1 & 2 closed | Open | 
| Asynchronous 25MHz | 50MHz | pins 2 & 3 closed | Closed | 
| Asynchronous 33HMz | 66MHz | pins 2 & 3 closed | Closed |