Cyrix to Sell Clones of Intel 486 Chips

Cyrix Corp. said Tuesday it would enter the microprocessor market in a challenge to Intel Corp., which for years has been the premier manufacturer of personal computer chips.

Intel stock dropped as word spread on Wall Street that Cyrix had developed a full line of clones of the Intel 486--now emerging as the next popular PC chip. Intel closed at $61.25 in heavy over-the-counter trading, down $2 a share.