ABC COMPUTER COMPANY, LTD.
COMPACT 286 VER. 2
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 20MHz  | 
| 
 Chip Set  | 
 C & T  | 
| 
 Max. Onboard DRAM  | 
 8MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 AMI  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Reset switch  | 
 E5  | 
 Speaker  | 
 J19  | 
| 
 MIPS counter  | 
 E7  | 
 Power LED & keylock  | 
 J21  | 
| 
 External battery  | 
 J17  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| » | 
 NPU speed select 10MHz  | 
 E1 & E2  | 
 pins 1 & 2 closed  | 
| 
 NPU speed select slow  | 
 E1 & E2  | 
 pins 2 & 3 closed  | |
| » | 
 BIOS type select 27128  | 
 E3  | 
 pins 1 & 2 closed  | 
| 
 BIOS type select 27256  | 
 E3  | 
 pins 2 & 3 closed  | |
| » | 
 CMOS memory normal operation  | 
 E4  | 
 pins 1 & 2 closed  | 
| 
 CMOS memory clear  | 
 E4  | 
 pins 2 & 3 closed  | |
| » | 
 Reset enabled through hardware only  | 
 E6  | 
 pins 1 & 2 closed  | 
| 
 Reset enabled through hardware and keyboard  | 
 E6  | 
 pins 2 & 3 closed  | |
| » | 
 Monitor type select monochrome  | 
 SW1  | 
 pins 1 & 2 closed  | 
| 
 Monitor type select color  | 
 SW1  | 
 pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 512KB  | 
 (18) 41256  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 640KB  | 
 (18) 41256  | 
 (18) 4164  | 
 NONE  | 
 NONE  | 
| 
 1MB  | 
 (18) 41256  | 
 (18) 41256  | 
 NONE  | 
 NONE  | 
| 
 1.5MB  | 
 (18) 41256  | 
 (18) 41256  | 
 (18) 41256  | 
 NONE  | 
| 
 1.64MB  | 
 (18) 41256  | 
 (18) 4164  | 
 (18) 41256  | 
 (18) 41256  | 
| 
 2MB  | 
 (18) 41256  | 
 (18) 41256  | 
 (18) 41256  | 
 (18) 41256  | 
| 
 2MB  | 
 (18) 411000  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 3MB  | 
 (18) 41256  | 
 (18) 41256  | 
 (18) 411000  | 
 NONE  | 
| 
 4MB  | 
 (18) 411000  | 
 (18) 411000  | 
 NONE  | 
 NONE  | 
| 
 4.64MB  | 
 (18) 41256  | 
 (18) 4164  | 
 (18) 411000  | 
 (18) 411000  | 
| 
 5MB  | 
 (18) 41256  | 
 (18) 41256  | 
 (18) 411000  | 
 (18) 411000  | 
| 
 6MB  | 
 (18) 411000  | 
 (18) 411000  | 
 (18) 411000  | 
 NONE  | 
| 
 8MB  | 
 (18) 411000  | 
 (18) 411000  | 
 (18) 411000  | 
 (18) 411000  | 
| 
 Note:Locations of banks within the DRAM area are unknown.  | ||||