ZF MICROSYSTEMS, INC.
SBX/386
| Processor | 80386SX | 
| Processor Speed | 33MHz | 
| Chip Set | Unidentified | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 16MB | 
| Maximum Video Memory | None | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 254mm x 114mm | 
| I/O Options | Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port, PC104 connectors (2), solid state disk | 
| NPU Options | None | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| VGA port | CN1 | Monitor power input connector | J1 | 
| Serial port 1 | CN2 | IDE interface LED | J2 | 
| Parallel port | CN3 | Speaker | J3 | 
| Serial port 2 | CN4 | External battery | J4 | 
| Floppy drive interface | CN5 | Keylock | J7 | 
| IDE interface | CN6 | Power connector | J31 | 
| PC104 connector | CN7 | Reset switch | J39 | 
| PC104 connector | CN8 | Expansion socket | JP1 | 
| Solid state disk | CN9 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J9 | Unidentified | 
| » | BIOS disabled | J10 | Open | 
| BIOS enabled | J10 | Closed | |
| VGA IRQ select IRQ9 | J42 | Pins 2 & 3 closed | |
| VGA IRQ select IRQ7 | J42 | Pins 1 & 2 closed | |
| » | SanDisk master/slave select master | J44 | Closed | 
| SanDisk master/slave select slave | J44 | Open | |
| » | Monitor type select non interlaced | J45 | Open | 
| Monitor type select interlaced | J45 | Closed | |
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 2MB | (2) 1M x 9 | None | 
| 4MB | (2) 1M x 9 | (2) 1M x 9 | 
| 8MB | (2) 4M x 9 | None | 
| 10MB | (2) 4M x 9 | (2) 1M x 9 | 
| 16MB | (2) 4M x 9 | (2) 4M x 9 | 
| Note: Board also accepts x 8 SIMMs. | ||
| EXPANSION SOCKET SELECTION | |||
| Type | Device | Size | J37 | 
| EPROM | 27C256 | 32KB | 6 & 7, 8 & 9 | 
| EPROM | 27C512 | 64KB | 3 & 7, 8 & 9 | 
| EPROM | 27C010 | 128KB | 2 & 6, 3 & 7, 4 & 5, 8 & 9 | 
| Flash BIOS | 28F256A | 32KB | 1 & 2, 4 & 5, 8 & 9 | 
| Flash BIOS | 28F512 | 64KB | 1 & 2, 4 & 5, 3 & 7 8 & 9 | 
| Flash BIOS | 28F010 | 128KB | 1 & 2, 4 & 5, 3 & 7 8 & 9 | 
| Flash BIOS | AM29F020 | 128KB | 4 & 5, 3 & 7 8 & 9 | 
| NVRAM | DS1225Y | 8KB | 5 & 9 | 
| NVRAM | DS1230 | 32KB | 5 & 9, 7 & 8 | 
| NVRAM | DS1235Y | 32KB | 5 & 9, 7 & 8 | 
| NVRAM | DS1630 | 32KB | 5 & 9, 7 & 8 | 
| NVRAM | DS1245Y | 128KB | 3 & 4, 5 & 9, 7 & 8 | 
| NVRAM | DS1645Y | 128KB | 3 & 7, 4 & 5, 8 & 9 | 
| NVRAM | BQ4010Y | 8KB | 5 & 9 | 
| NVRAM | BQ4011Y | 32KB | 5 & 9, 7 & 8 | 
| NVRAM | BQ4013Y | 128KB | 3 & 4, 5 & 9, 7 & 8 | 
| Note: Pins designated should be in the closed position. | |||
| BIOS SELECTION | |||||
| Size | Address | J11 | J12 | J14 | |
| » | Disabled | N/A | Closed | Closed | Closed | 
| 16KB | DC000h | Closed | Closed | Open | |
| 32KB | D8000h | Open | Open | Closed | |
| 64KB | D0000h | Closed | Open | Open | |
| 80KB | CC000h | Open | Closed | Closed | |
| 96KB | C8000h | Open | Closed | Open | |
| 112KB | C4000h | Open | Open | Closed | |
| 128KB | C0000h | Open | Open | Open | |
| WATCHDOG TIMER SELECTION | |||
| Type | J18 | J19 | J20 | 
| Watchdog timer | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | 
| Power fail | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |