Help! I have a customer who wants to update his 8051/bitbus/sdlc products. Of course he still needs to communicate with his legacy products. So my job is to convert 8051 product with external ram/rom/etc to PIC microcontroller. Converting 8051 to pic is easy. When I first switched from 8051 to PIC (1992) I wrote a 8051 op code to pic op code converter program. BUT I need to try and find a bitbus/sdlc hardware device or do a pic software emulation. Any suggestions??? Thanks, Ray -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist