H&L Associates |
H&L Associates |
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HomeH & L Associates is an electronics engineering consulting firm which has been in operation since 1980. We have developed retrofit products for the complete line D.W.Mann/GCA photolithography cameras (pattern generators or PGs) and photorepeaters (or steppers). These were originally used in the manufacture of photomasks for the semiconductor fabrication industry. A brief history of GCA Corp. can be found in the library The original GCA equipment used Digital Equipment Corporation (DEC) PDP-8 (for the 1600A, 2600 and 3000 pattern generators) and PDP-11 (for everything else) mini-computers to control the equipment. We provide the necessary hardware and software to replace these outdated computers with a standard desktop PC running some recent version of MS-DOS (or an equivalent). The PC keyboard and video display will replace the VT100 family serial terminal originally attached to this equipment. The PC hard drive and DOS files will replace the original storage media (paper tape, 9-track magtape, 8-inch floppy disks etc.) We also provide additional hardware products to replace some of the peripheral devices used in the steppers. The PDP-8/PDP-11 minicomputer chassis can be removed entirely from the stepper or PG and discarded. Our interface boards plug into the desktop PC and connect directly to the PG interface chassis (9280 type) or the stepper interface chassis (9280 or 9289 type). The final installation will consist of the desktop computer, our interface board and software, and the original equipment's rack of electronics. What's New
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