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IBM Journal of Research and Development  
Volume 41, Numbers 4/5, 1997
IBM S/390 G3 and G4
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A high-frequency custom CMOS S/390 microprocessor - Author bios

by C. F. Webb and J. S. Liptay

Biographical sketches of authors

Charles F. Webb IBM System/390 Division, 522 South Road, Poughkeepsie, New York 12601 (cwebb@vnet.ibm.com). Mr. Webb received his B.S. degree in 1982 and his M.Eng. degree in 1983, both from Rensselaer Polytechnic Institute. He joined IBM in 1983 at the IBM Product Development Laboratory in Poughkeepsie in the Processor Performance Analysis organization. In 1987 he joined the Processor Development organization, where he has remained since. Mr. Webb has worked on the ES/9000 processor and the S/390 G4 CMOS processor in the areas of performance analysis and CPU design. He has received seven IBM Invention Achievement Awards and an IBM Outstanding Innovation Award. Mr. Webb is an IBM Senior Technical Staff Member.

John S. Liptay IBM System/390 Division, 522 South Road, Poughkeepsie, New York 12601 (LIPTAY at PK705VMA). Mr. Liptay received his B.E.E. degree in 1962 and his M.E.E. degree in 1966, both from Rensselaer Polytechnic Institute. He joined IBM in 1965 at the Thomas J. Watson Research Center, transferring shortly thereafter to the IBM Product Development Laboratory in Poughkeepsie, where he has remained since. Mr. Liptay has worked on the System/360 Models 65 and 85, the System/370 Model 168, the 3033, the ES/9000 processor, and the S/390 G4 CMOS processor, all in the area of CPU design. He has received five IBM Invention Achievement Awards, an IBM Outstanding Contribution Award, an IBM Division Award, an IBM Technical Excellence Award, and an IBM Outstanding Innovation Award. Mr. Liptay is an IBM Senior Technical Staff Member and a member of Tau Beta Pi, Eta Kappa Nu, the Institute of Electrical and Electronics Engineers, and the Association for Computing Machinery.