CMS ENHANCEMENTS, INC.
HCWDWX1
| 
 
  | |
| 
 Data bus:  | 
 8-bit ISA  | 
| 
 Size:  | 
 Half-length, full-height card  | 
| 
 Hard drive supported:  | 
 Two MFM ST506/412 drives  | 
| 
 Floppy drives supported:  | 
 None  | 
| 
 CONNECTIONS  | |
| 
 Function  | 
 Location  | 
| 
 34-pin control cable connector - hard drive  | 
 J1  | 
| 
 20-pin data cable connector - drive 0  | 
 J2  | 
| 
 20-pin data cable connector - drive 1  | 
 J3  | 
| 
 External power connector  | 
 J4  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 Factory configured - do not alter  | 
 J1/A  | 
 N/A  | 
| » | 
 Factory configured - do not alter  | 
 J1/B  | 
 N/A  | 
| » | 
 Factory configured - do not alter  | 
 J1/D  | 
 N/A  | 
| 
 Controller supports up to 16 heads  | 
 W6  | 
 pins 1 & 2 closed  | |
| 
 Controller supports up to 8 heads  | 
 W6  | 
 pins 2 & 3 closed  | |
| 
 ADDRESS SELECT  | |||||
| 
 I/O Address  | 
 Base Memory Address  | 
 W3  | 
 W4  | 
 W8  | |
| » | 
 320 - 323h  | 
 C8000 - C9FFFh  | 
 closed  | 
 pins 2 & 3  | 
 pins 2 & 3  | 
| 
 324 - 327h  | 
 CA000 - CBFFFh  | 
 closed  | 
 pins 1 & 2  | 
 pins 1 & 2  | |
| 
 N/A  | 
 Disabled  | 
 open  | 
 N/A  | 
 N/A  | |
| 
 Note: All pins designated should be placed in the closed position.  | |||||
| 
 PRE-SELECTED DRIVE CONFIGURATIONS  | |||||||
| 
 First Drive  | 
 Second Drive  | ||||||
| 
 Capacity  | 
 Heads  | 
 Cylinders  | 
 J1/E  | 
 J1/F  | 
 J1/G  | 
 J1/H  | |
| » | 
 10MB  | 
 4  | 
 306  | 
 open  | 
 open  | 
 open  | 
 open  | 
| 
 21MB  | 
 4  | 
 612  | 
 closed  | 
 closed  | 
 closed  | 
 closed  | |
| 
 10MB  | 
 2  | 
 612  | 
 open  | 
 closed  | 
 open  | 
 closed  | |
| 
 21MB  | 
 4  | 
 612  | 
 closed  | 
 open  | 
 closed  | 
 open  | |
| 
 INTERRUPT SELECT  | |||
| 
 IRQ  | 
 W7  | 
 J1/C  | |
| » | 
 IRQ5  | 
 pins 1 & 2 closed  | 
 open  | 
| 
 IRQ2  | 
 pins 2 & 3 closed  | 
 closed  | |
| 
 Note: The location of jumper W7 is not identified in manufacturer documentation.  | |||