TWINHEAD INTERNATIONAL CORPORATION
CT-6280
| 
 Card Type  | 
 Memory card  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Maximum Onboard Memory  | 
 640KB  | 
| 
 Data Bus  | 
 8-bit ISA  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| » | 
 Factory configured - do not alter  | 
 SW1/7  | 
 Unidentified  | 
| 
 Parity check enabled  | 
 SW1/8  | 
 On  | |
| 
 Parity check disabled  | 
 SW1/8  | 
 Off  | |
| 
 DRAM CONFIGURATION  | |||
| 
 Size  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 0KB  | 
 None  | 
 None  | 
 None  | 
| 
 64KB  | 
 64KB  | 
 None  | 
 None  | 
| 
 128KB  | 
 64KB  | 
 64KB  | 
 None  | 
| 
 192KB  | 
 64KB  | 
 64KB  | 
 64KB  | 
| 
 256KB  | 
 256KB  | 
 None  | 
 None  | 
| 
 320KB  | 
 256KB  | 
 64KB  | 
 None  | 
| 
 384KB  | 
 256KB  | 
 64KB  | 
 64KB  | 
| 
 448KB  | 
 256KB  | 
 256KB  | 
 None  | 
| 
 512KB  | 
 256KB  | 
 256KB  | 
 None  | 
| 
 576KB  | 
 256KB  | 
 256KB  | 
 64KB  | 
| 
 640KB  | 
 256KB  | 
 256KB  | 
 256KB  | 
| 
 Note: It is recommended that 4164 or 4125 RAM chips of 150ns or faster be used.  | |||
| 
 DRAM JUMPER CONFIGURATION  | ||||
| 
 Size  | 
 SW1/3  | 
 SW1/4  | 
 SW1/5  | 
 SW1/6  | 
| 
 0KB  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
| 
 64KB  | 
 On  | 
 Off  | 
 Off  | 
 Off  | 
| 
 128KB  | 
 Off  | 
 On  | 
 Off  | 
 Off  | 
| 
 192KB  | 
 On  | 
 On  | 
 Off  | 
 Off  | 
| 
 256KB  | 
 Off  | 
 Off  | 
 On  | 
 Off  | 
| 
 320KB  | 
 On  | 
 Off  | 
 On  | 
 Off  | 
| 
 384KB  | 
 Off  | 
 On  | 
 On  | 
 Off  | 
| 
 448KB  | 
 On  | 
 On  | 
 On  | 
 Off  | 
| 
 512KB  | 
 Off  | 
 Off  | 
 Off  | 
 On  | 
| 
 576KB  | 
 On  | 
 Off  | 
 Off  | 
 On  | 
| 
 640KB  | 
 Off  | 
 On  | 
 Off  | 
 On  | 
| 
 STARTING ADDRESS SELECTION  | ||
| 
 Address  | 
 SW1/1  | 
 SW1/2  | 
| 
 00000h (0KB)  | 
 Off  | 
 Off  | 
| 
 10000h (64KB)  | 
 On  | 
 Off  | 
| 
 20000h (128KB)  | 
 Off  | 
 On  | 
| 
 40000h (256KB)  | 
 On  | 
 On  |