Add-on programs with code verification and control

Details Add-on programs with code verification and control Add-on programs with code verification and control

G - Physics

06

F

354/241

G06F 13/00 (2006.01) G06F 11/00 (2006.01) G06F 11/10 (2006.01) G06F 11/22 (2006.01) G06F 12/06 (2006.01) G11C 29/12 (2006.01) G11C 29/28 (2006.01) G11C 29/40 (2006.01)

Patent

CA 1143859

Abstract Expandable memory system having add-on modules beginning at fixed address boundaries, e.g., 2K (K=1024), and having verification and authorization features. A non-volatile memory stores a bit corresponding to each 2K memory boundary. When an add-on program is authorized at a par- ticular boundary address, the corresponding bit is set. The base program checks each bit and, if it is set, reads the first location of the corresponding add-on program. If the data read from the new module matches some reference, e.g., the boundary address itself, then program control branches to the add-on program. Additional verification features include cyclic redundancy checks of the added code. Alternative operation includes branching to a verified add-on program that tests its own authorization bit which, if reset, causes a branch to the next verified add-on program, and so on. B09-77-070

358900

Affiliated with

Also associated with

Rating

Add-on programs with code verification and control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Add-on programs with code verification and control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Add-on programs with code verification and control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-548315