System for simultaneously programming a number of EPROMs

Details System for simultaneously programming a number of EPROMs System for simultaneously programming a number of EPROMs

1982-06-25

1986-03-25

Thomas, James D.

Boots, shoes, and leggings

364300, 371 21, 365 94, 365 96, 365218, G06F 900, G06F 1300

Patent

active

045787514

ABSTRACT:
A method and system are used for simultaneously programming a group of erasable programmable read only memories (EPROMs) (11) originally set in the "all-ones" state, by routing (17-49) programmed bytes, bit by bit, to each memory site on each EPROM and blocking (48) or bypassing the programming steps where a programmed byte consists of all ones, thus saving the programming time that would be normally used to program "all-ones" sites. Each programmed site and the sites set in the "all-ones" state are verified (52) prior to the routing of subsequent programmed bytes.

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