I noticed this to with the latest version of MPLAB (3.12.14). According to MPLAB, the 16C84 only seems to have 512 Instructions. The other problems I noticed were: 1. Sometimes on pulling up a project, the right side of the Stopwatch is cut off (to the edge of the window beside it - even if it doesn't show up (see the next problem)). 2. Sometimes on bringing up a project, if a custom watch window has been created for it, the watch window didn't come up. I didn't report these problems earlier because I am only running 3.12.14 on a laptop running Windows 3.11 (that I'm having some hard drive problems) and I wasn't sure the problems were in MPLAB, or in the laptop. Oh - the 16 bit variable display now available for the Watch Windows is really fantastic! myke >At 22:38 01/04/1997 -0800, you wrote: >>Ok, this should be an easy one for you guys. I'm sure it's something >>simple (stupid) I'm over looking. Why is it that MPLab will not program >>the C84 beyond 512 bytes? My program compiles fine but when I simulate it, >>as soon as it hits step 0x01FF it jumps back to step 0. There is 1K of >>memory space right? What am I missing? > >Yes C84 has 1K-Word memory. > >16F83: > ROM space : 512 x 14-Bit Words > RAM space : 36 Bytes >16F84: > ROM space : 1024 x 14-Bit Words > RAM space : 68 Bytes >16C84: > ROM space : 1024 x 14-Bit Words > RAM space : 36 Bytes > >Regards, > Philippe. > > +---------------------------------------------------------+ > | Virtual Micro Design | > | | > | Try UMPS, the microcontroller simulator | > | | > | E-Mail: p.techer@idls.izarbel.tm.fr | > | WEB: http://idls.izarbel.tm.fr/entp/techer/P01.HTM | > +---------------------------------------------------------+ > > "Some people say that foreign cars handle best, while others say domestic. For my money, nothing handles as well as a rental car." - P.J. O'Rourke