Faced with weakening demand for in-tegrated circuits from the personal computer sector, Advanced Micro De-vices Inc is having to cut its 8,500 strong US workforce by 1,000 people, 11.8%, in January. Based on current order levels it expects sales to fall this quarter, and sees no material improvement in the immediate future. It says important customers to have excess inventory of programmable logic devices and 80286 microprocessors. It is also mothballing a bipolar fab in San Antonio, Texas, and will convert it to CMOS when appropriate.