trunk/src/mess/drivers/victor9k.c
| r23494 | r23495 | |
|---|
| 1 | | /*************************************************************************** |
| 1 | /********************************************************************** |
| 2 | 2 | |
| 3 | | Victor 9000 |
| 3 | Victor 9000 / ACT Sirius 1 emulation |
| 4 | 4 | |
| 5 | | - very exciting hardware, disk controller is a direct descendant |
| 6 | | of the Commodore drives (designed by Chuck Peddle) |
| 5 | Copyright MESS Team. |
| 6 | Visit http://mamedev.org for licensing and usage restrictions. |
| 7 | 7 | |
| 8 | | Skeleton driver |
| 8 | **********************************************************************/ |
| 9 | 9 | |
| 10 | | ***************************************************************************/ |
| 10 | /* |
| 11 | 11 | |
| 12 | Sector format |
| 13 | ------------- |
| 14 | |
| 15 | Header sync |
| 16 | Sector header (header ID, track ID, sector ID, and checksum) |
| 17 | Gap 1 |
| 18 | Data Sync |
| 19 | Data field (data sync, data ID, data bytes, and checksum) |
| 20 | Gap 2 |
| 21 | |
| 22 | Track format |
| 23 | ------------ |
| 24 | |
| 25 | ZONE LOWER HEAD UPPER HEAD SECTORS ROTATIONAL |
| 26 | NUMBER TRACKS TRACKS PER TRACK PERIOD (MS) |
| 27 | |
| 28 | 0 0-3 unused 19 237.9 |
| 29 | 1 4-15 0-7 18 224.5 |
| 30 | 2 16-26 8-18 17 212.2 |
| 31 | 3 27-37 19-29 16 199.9 |
| 32 | 4 38-48 30-40 15 187.6 |
| 33 | 5 49-59 41-51 14 175.3 |
| 34 | 6 60-70 52-62 13 163.0 |
| 35 | 7 71-79 63-74 12 149.6 |
| 36 | 8 unused 75-79 11 144.0 |
| 37 | |
| 38 | */ |
| 39 | |
| 12 | 40 | /* |
| 13 | 41 | |
| 14 | 42 | TODO: |