INTERFACE COMMANDS
WORD | CONTENT DESCRIPTION | |
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50 | Reserved | |
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51 | ||
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52 | ||
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53 | 15 = reserved | |
| 2, 1 = the fields supported in words 88 are valid, 0 = the fields supported in words 88 are not valid | |
| 1, 1 = the fields reports in words | |
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| 0, 1 = the fields reports in words | |
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54 | Number of current logical cylinders | |
55 | Number of current logical heads | |
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56 | Number of logical sectors per track | |
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57 - 58 | Current capacity in sectors | |
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59 | ||
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| 8, 1 = multiple sector setting is valid | |
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| command | |
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60 - 61 | Total number of user addressable sectors (LBA mode only) | |
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62 | Reserved | |
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63 | ||
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64 | ||
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65 | Minimum | |
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66 | Manufacturer's recommeded | |
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67 | Minimum PIO transfer cycle time without flow control | |
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68 | Minimum PIO transfer cycle time with IORDY flow control | |
Reserved | ||
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80 | ||
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| 5, 1 = | supports |
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| 4, 1 = | supports |
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| 3, 1 = supports | |
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| 2, 1 = supports | |
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| 1, 1 = supports | |
| 0, reserved | |
81 | Minor version number | |
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82 | Command set supported. If words 82 and 83 = 0000h or FFFFh command set notification not supported. | |
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| 15, 1 = supports the Identify Device DMA command | |
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| 14, 1 = supports the NOP command | |
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| 13, 1 = supports the Write Buffer command | |
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| 12, 1 = supports the Read Buffer command | |
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| 11, 1 = supports the Read Buffer command | |
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| 10, 1 = supports | |
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| 9, 1 = supports the Device Reset command | |
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| 8, 1 = supports Service Interupt | |
| 7, 1 = supports Release Interupt | |
| 6, 1 = supports Look Ahead | |
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| 5, 1 = supports Write Cache | |
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| 4, 1 = supports the Packet command feature set | |
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| 3, 1 = supports the Power Management feature command | |
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| 2, 1 = supports the Removable feature command | |
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| 1, 1 = supports the Security featurecommand | |
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| 0, 1 = supports the SMART feature set | |
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7 – 10