Block oriented peripheral device interface

Details Block oriented peripheral device interface Block oriented peripheral device interface

1990-06-07

1993-01-12

Fleming, Michael R.

Boots, shoes, and leggings

3642543, 364DIG1, 3649571, 364DIG2, G06F 1300

Patent

active

051796660

ABSTRACT:
A common peripheral device interface module is disclosed for use with Unix (Unix is a trademark of AT&T) operating system which is flexible enough to support many types of disk or tape device drivers. A common disk module (CDM) is included. The CDM contains high level disk operation commands which may be used for common reference to each disk driver on the system. Routines within the CDM are accessed by the Unix system call interface through a series of operating system entry points. Additional routines are included with the pre-existing Unix operating system Disk I/O Subsystem to improve interfacing between this subsystem and the CDM. A common tape module (CTM) is used to perform high level tape operation routines. The Unix system call interface communicates with the CTM through a group of operating system entry points. Because of the large number of possible root disk device drives, the root disk device driver can be dynamically selected for the Unix operating system. Each controller which is resident within the system checks in with the operating system. The controller which checks in first with the operating system is used for booting up the system. Each controller which checks in is matched with an appropriate device driver. The matched device drivers are then used for disk I/O functions.

REFERENCES:
patent: 4649479 (1987-03-01), Advani et al.
patent: 4742447 (1988-05-01), Duvall et al.
patent: 4747040 (1988-05-01), Blanset et al.
patent: 4901231 (1990-02-01), Bishop et al.
patent: 4951245 (1990-08-01), Bailey et al.
patent: 4972368 (1990-11-01), O'Brien et al.
patent: 4975829 (1990-12-01), Clarey et al.
Operating Systems-Design & Implementation by Andrew S. Tanenbaum (author) Prentice-Hall International Editions (110-122 13 pages) 1987.
"Unix Internals"; Myril Clement Shaw and Susand Soltis Shaw; Copyright 1987; pp. 131-140, 147-151.
"Device Drivers for Unix, Character mode? Block mode? ioctl()? A starter Kit for Unix I/O"; Tim Parker; pp. 49-51, 54-56.

Affiliated with

Also associated with

Rating

Block oriented peripheral device interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Block oriented peripheral device interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Block oriented peripheral device interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1225881