JC INFORMATION SYSTEMS CORPORATION
486 SX/DX MODEL 270
| 
 Processor  | 
 80486SX/80487SX/80486DX/80486DX2  | 
| 
 Processor Speed  | 
 25/33/50(internal)/66(internal)MHz  | 
| 
 Chip Set  | 
 C & T  | 
| 
 Max. Onboard DRAM  | 
 32MB  | 
| 
 Cache  | 
 64/256KB  | 
| 
 BIOS  | 
 AMI  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 32-bit memory expansion slot  | 
| 
 NPU Options  | 
 4167  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J11  | 
 32 bit memory expansion slot  | 
 SL1  | 
| 
 Power LED & keylock  | 
 J20  | 
 Reset switch  | 
 SW1  | 
| 
 Speaker  | 
 J21  | 
 Turbo switch  | 
 SW2  | 
| 
 Turbo LED  | 
 JP11  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Enable onboard battery  | 
 JP1  | 
 pins 2 & 3 closed  | 
| 
 Enable external battery  | 
 JP1  | 
 Open  | |
| 
 »  | 
 Monitor type select color  | 
 JP2  | 
 Closed  | 
| 
 Monitor type select monochrome  | 
 JP2  | 
 Open  | |
| 
 »  | 
 Factory configured do not alter  | 
 JP3  | 
 N/A  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP4  | 
 N/A  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP5  | 
 N/A  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP7  | 
 N/A  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP9  | 
 N/A  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP10  | 
 N/A  | 
| 
 »  | 
 Turbo switch not available  | 
 JP11  | 
 Closed  | 
| 
 »  | 
 Factory configured do not alter  | 
 JP12  | 
 N/A  | 
| 
 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) 1M x 9  | 
 (4) 256K x 9  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 20MB  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 32MB  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 CACHE CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 TAG  | 
| 
 64KB  | 
 (8) 8K x 8  | 
 (1) 8K x 8  | 
| 
 256KB  | 
 (8) 32K x 8  | 
 (1) 32K x 8  |