Myke, >I noticed this to with the latest version of MPLAB (3.12.14). According to >MPLAB, the 16C84 only seems to have 512 Instructions. Exactly what I'm seeing here, thanks for the confirmation, I was going nuts trying to figure out what I was doing wrong. Wasted hours! I even thought there might be a problem with MPLab so I checked their web site and found a new release 3.22.00. This did not fix the problem. I even tried to compile and run as a 16F84, same error. Man, I hate it when this happens! At least I don't have to kick myself ... yet. So, Microchip ... what's up? --rob-- >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. >>>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?