Or an FPGA: -- Martin K Denny Esterline wrote: > Here's an off-the-wall idea, take it with a grain of salt :-) > > Considering advancments is speed and proccessing capabilities since these chips were designed in, couldn't a person produce a suitable emulator on a DSPIC or an ARM and put it on a simmilar carrier board? > > If that were so, would such a product require the UL re-listing (and it's assosciated costs)? > > -Denny > > >> I just finished re-designing a product for a client that's been in >> production since 1985. It originally used a Rockwell R6501Q MPU. See >> where this is heading? >> >> The client builds about 1500 of these units a year and for the past >> several years has been building them with a R6501J mounted on a >> carrier board to fit the old R6501Q quad inline holes. This assembly >> is a life-safety type device and changing the PCB layout would >> require a complete U.L. re-listing to the tune of about $80K. So we >> needed something that would "drop-in" and not require any software or >> PCB re-work. We were lucky to find the R6501J's and be able to adapt >> them to the old PCB design. >> > > > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist