Post by thread:Cant Program 12c508 Config bits

Im trying to program a 12c508 using MPASM (latest version) to assemble the code, then burning the chip with a Parallax 16cxx programmer, using a home-made adaptor, V4.2 firmware and SPEP v4.6. The code programs ok but the config never changes from its default state, no matter what settings I put in SPEP. The config information appears at the end of the hex file but I think SPEP ignores it. Does anyone have an idea why SPEP cant change the config bits? Because the rest of the code programs ok I dont think there is any problem with the adaptor. Thanks for any help, Jerome Knapp

As a beginner i met the same problem. Try this solution: - download SPEP 4.7 - MPASM produces the .hex file. - load the .hex file in SPEP. - change configuration as you want it. - save the file as .obj file next time you load the .obj file all setting appear to be saved Leo van Loon SBB simpeltronics Netherlands tel +31 (0481) 450034 fax+31 (0481) 450051 mail spam_OUTsbb.simpeltronTakeThisOuTtip.nl url http://www.tip.nl/users/sbb.simpeltron SBB simpeltronics ontwikkelt technische projecten voor basisschool en basisvorming -----Oorspronkelijk bericht----- Van: Jerome Knapp <.....jjknapKILLspam@spam@SKCLA.MONSANTO.COM> Aan: PICLISTKILLspamMITVMA.MIT.EDU <.....PICLISTKILLspam.....MITVMA.MIT.EDU> Datum: donderdag 12 februari 1998 17:19 Onderwerp: Cant Program 12c508 Config bits > Im trying to program a 12c508 using MPASM (latest version) to assemble >the code, then burning the chip with a Parallax 16cxx programmer, using a >home-made adaptor, V4.2 firmware and SPEP v4.6. The code programs ok but the >config never changes from its default state, no matter what settings I put in >SPEP. The config information appears at the end of the hex file but I think >SPEP ignores it. Does anyone have an idea why SPEP cant change the config >bits? > >Because the rest of the code programs ok I dont think there is any problem with >the adaptor. > >Thanks for any help, > >Jerome Knapp > >