ADVANCED DIGITAL CORPORATION
PC II
| Processor | 80188 (2) | 
| Processor Speed | 8MHz | 
| Video Chipset | Unidentified | 
| Chipset | Unidentified | 
| Maximum Onboard Memory | 1MB DRAM (512KB per processor) | 
| BIOS | Unidentified | 
| Dimensions | 336.6 x 111.1mm | 
| I/O Options | Video ports (1 per processor) | 
| Video Types Supported | Monochrome | 
| Highest Resolution Supported | Text only | 

| CONNECTIONS | |||
| Function | Label | Function | Label | 
| Video and keyboard for machine 1 | J1 | 12V DC power out | P1A | 
| Video and keyboard for machine 2 | J2 | 
 | 
 | 
| Note:Standard video and keyboard connectors are provided on an external adapter box. | |||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | SWA/A | Pins 1 & 2 closed | 
| » | Factory configured - do not alter | SWA/B | Pins 1 & 2 closed | 
| » | Factory configured - do not alter | SWA/C | Pins 1 & 2 closed | 
| » | Factory configured - do not alter | SWA/D | Pins 1 & 2 closed | 
| » | Factory configured - do not alter | SWA/E | Pins 2 & 3 closed | 
| » | Factory configured - do not alter | SWA/F | Pins 2 & 3 closed | 
| » | Interrupt terminator enabled | SWD/5 | On | 
| 
 | Interrupt terminator disabled | SWD/5 | Off | 
| » | Factory configured - do not alter | SWD/6 | Off | 
| » | Factory configured - do not alter | SWD/7 | Off | 
| » | Factory configured - do not alter | SWD/8 | Off | 
| BASE I/O ADDRESS SELECTION | |||||||||
| Setting | SWB/1 | SWB/2 | SWB/3 | SWB/4 | SWB/5 | SWB/6 | SWB/7 | SWB/8 | |
| 
 | 200h | On | On | On | On | On | On | On | On | 
| 
 | 202h | Off | On | On | On | On | On | On | On | 
| 
 | 204h | On | Off | On | On | On | On | On | On | 
| 
 | 206h | Off | Off | On | On | On | On | On | On | 
| 
 | 208h | On | On | Off | On | On | On | On | On | 
| » | 230h | On | On | On | Off | Off | On | On | On | 
| 
 | 3F6h | Off | Off | On | Off | Off | Off | Off | Off | 
| 
 | 3F8h | On | On | Off | Off | Off | Off | Off | Off | 
| 
 | 3FAh | Off | On | Off | Off | Off | Off | Off | Off | 
| 
 | 3FCh | On | Off | Off | Off | Off | Off | Off | Off | 
| 
 | 3FEh | Off | Off | Off | Off | Off | Off | Off | Off | 
| Note:A total of 256 base address settings are available. The switches are a binary representation of the decimal memory addresses. SWB/8 is the Most Significant Bit and switch SWB/1 is the Least Significant Bit. The switches have the following decimal values: SWB/1=2, SWB/2=4, SWB/3=8, SWB/4=16, SWB/5=32, SWB/6=64, SWB/7=128, SWB/8=256. Turn off the switches and add the values of the switches that are off to 512 to obtain the correct memory address. (Off=1, On=0) | |||||||||
| SHARED RAM ADDRESS | |||||||||
| Setting | SWC/1 | SWC/2 | SWC/3 | SWC/4 | SWC/5 | SWC/6 | SWC/7 | SWC/8 | |
| 
 | 00000h | On | On | On | On | On | On | On | On | 
| 
 | 01000h | Off | On | On | On | On | On | On | On | 
| 
 | 02000h | On | Off | On | On | On | On | On | On | 
| 
 | 03000h | Off | Off | On | On | On | On | On | On | 
| 
 | 04000h | On | On | Off | On | On | On | On | On | 
| » | C0000h | On | On | On | On | On | On | Off | Off | 
| 
 | FB000h | Off | Off | On | Off | Off | Off | Off | Off | 
| 
 | FC000h | On | On | Off | Off | Off | Off | Off | Off | 
| 
 | FD000h | Off | On | Off | Off | Off | Off | Off | Off | 
| 
 | FE000h | On | Off | Off | Off | Off | Off | Off | Off | 
| 
 | FF000h | Off | Off | Off | Off | Off | Off | Off | Off | 
| Note:A total of 256 base address settings are available. The switches are a binary representation of the decimal memory addresses. SWC/8 is the Most Significant Bit and switch SWC/1 is the Least Significant Bit. The switches have the following decimal values: SWC/8=524,288, SWC/7=262,144, SWC/6=131,072, SWC/5=65,536, SWC/4=32,768, SWC/3=16,384, SWC/2=8,192, SWC/1=4,096. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) | |||||||||
| INTERRUPT SELECTION | |||||
| Setting | SWD/1 | SWD/2 | SWD/3 | SWD/4 | |
| 
 | IRQ2 | On | Off | Off | Off | 
| » | IRQ3 | Off | On | Off | Off | 
| 
 | IRQ4 | Off | Off | On | Off | 
| 
 | IRQ5 | Off | Off | Off | On | 
PC II (SERIAL DAUGHTERBOARD)
| Processor | 80188 (2) | 
| Processor Speed | 8MHz | 
| I/O Options | Serial ports (1 per processor) | 

| CONNECTIONS | |||
| Function | Label | Function | Label | 
| Serial port for machine 1 | P2 | Header to main board CPU socket (on back of board) | U1 | 
| Serial port for machine 2 | P3 | Header to main board CPU socket (on back of board) | U2 | 
| 12V DC power in from main board (on back of board) | P1B | 
 | 
 | 
| MISCELLANEOUS TECHNICAL NOTES | 
| Remove the CPUs from the main card, and install them into the daughterboard's sockets. |