| 1. |
th99
NCL AMERICA
| Data bus: | 8-bit, ISA |
| Size: | Half-length, full-height card |
| Hard drives supported: | Two MFM ST506/412 |
| Floppy drives supported: | None |
| CONNECTIONS |
| Functions | Location |
| 34-pin control cable connector-hard drive | CN1 |
| 20-pin data cable connector-drive 0 | CN2 |
| 20-pin data cable connector-drive 1 | CN3 |
| USER CONFIGURABLE SETTINGS |
| Function | Location | Setting |
| » | Factory configured - do not alter | JP1/all | N/A |
| » | Recalibration speed is fast or normal | JP4 | open |
| | Recalibration speed is slow | JP4 | closed |
| » | Supports up to 8 heads | JP6 | pins 1 & 2 closed |
| | Supports up to 16 heads | JP6 | pins 2 & 3 closed |
| BIOS DRIVE TYPE TABLE FOR THE NCL5027 - SW1 |
| Hd/Cyl | # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 7/699 | 1 | on | on | on | off | N/A | N/A | N/A | on |
| 6/612 | 1 | on | on | off | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | on | on | off | off |
| 4/640 | 1 | on | off | on | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | on | off | on | off |
| 4/612 | 1 | on | off | on | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | on | off | on | off |
| 2/612 | 1 | off | on | on | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | off | on | on | off |
| 2/306 | 1 | off | on | off | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | off | on | off | off |
| 4/320 | 1 | off | off | on | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | off | off | on | off |
| 4/306 | 1 | off | off | off | off | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | off | off | off | off | off |
| 6/640 | 1 | on | on | on | on | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | on | on | on | on | off |
| 5/733 | 1 | on | on | off | on | N/A | N/A | N/A | off |
| | 2 | N/A | N/A | N/A | on | on | on | off | off |
| 7/733 | 1 | on | off | on | on | N/A | N/A | N/A | on |
| 5/830 | 1 | on | off | off | on | N/A | N/A | N/A | on |
| 7/830 | 1 | off | on | on | on | N/A | N/A | N/A | on |
| 10/830 | 1 | off | on | off | on | N/A | N/A | N/A | on |
| 15/918 | 1 | off | off | on | on | N/A | N/A | N/A | on |
| 5/977 | 1 | off | off | off | on | N/A | N/A | N/A | on |
| Note:This controller has a built-in, low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5 SW1/switch 8 must be "on" before power-up to enable the drive splitting feature. |
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