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1.1 ! root 1: ! 2: ! 3: device drivers Overview device drivers ! 4: ! 5: ! 6: ! 7: ! 8: A device driver is a program that controls the action of one of ! 9: the physical devices attached to your computer system. ! 10: ! 11: The following table lists the device drivers included with this ! 12: edition of the COHERENT system. The first field gives the ! 13: device's major device number; the second gives its name; and the ! 14: third describes it. When a major device number has no driver as- ! 15: sociated with it, that device is available for a driver yet to be ! 16: written. ! 17: ! 18: 0: *mmeemm Interface to memory ! 19: 1: ttttyy Primitive tty driver ! 20: 2: kkbb/mmmm Keyboard and video ! 21: 3: llpp Parallel line printer ! 22: 4: ffll Floppy drive ! 23: 5: aall00 Serial line 0 (COM1 and COM3) ! 24: 6: aall11 Serial line 1 (COM2 and COM4) ! 25: 7: hhss Generic polled multi-port serial card ! 26: 8: rrmm RAM disk ! 27: 9: ! 28: 10: ! 29: 11: aatt AT hard disk ! 30: 12: ! 31: 13: ssccssii SCSI device driver ! 32: 14: ! 33: 15: ! 34: 16: ! 35: 17: ! 36: 18: ! 37: 19: ! 38: 20: ! 39: 21: ! 40: 22: ! 41: 23: sseemm System V compatible semaphores ! 42: 24: sshhmm System V subset shared memory ! 43: 25: mmssgg System V compatible messaging ! 44: 26: ! 45: 27: ! 46: 28: ! 47: 29: ! 48: 30: ! 49: 31: ! 50: ! 51: Also included are drivers for the following devices: ! 52: ccoonnssoollee Console driver ! 53: cctt Controlling terminal driver ! 54: nnuullll The ``bit bucket'' ! 55: ! 56: ***** See Also ***** ! 57: ! 58: at, boot, com, console, ct, fl, Lexicon, lp, mboot, mem, msg, ! 59: null, scsi, sem, shm, tape, termio ! 60: ! 61: ! 62: ! 63: ! 64: COHERENT Lexicon Page 1 ! 65: ! 66: ! 67: ! 68: ! 69: device drivers Overview device drivers ! 70: ! 71: ! 72: ! 73: ***** Notes ***** ! 74: ! 75: See the Release Notes for your release of COHERENT for a list of ! 76: supported devices and device drivers. ! 77: ! 78: The devices msg, sem, and shm are loadable drivers that can be ! 79: loaded into memory using the command drvld. See their respective ! 80: entries for more information. ! 81: ! 82: ! 83: ! 84: ! 85: ! 86: ! 87: ! 88: ! 89: ! 90: ! 91: ! 92: ! 93: ! 94: ! 95: ! 96: ! 97: ! 98: ! 99: ! 100: ! 101: ! 102: ! 103: ! 104: ! 105: ! 106: ! 107: ! 108: ! 109: ! 110: ! 111: ! 112: ! 113: ! 114: ! 115: ! 116: ! 117: ! 118: ! 119: ! 120: ! 121: ! 122: ! 123: ! 124: ! 125: ! 126: ! 127: ! 128: ! 129: ! 130: COHERENT Lexicon Page 2 ! 131: ! 132:
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