Had this when I started. I use pp by David Tait for serial programming on a home brew programmer- After I slowed the loading process it never happened again. Do not know how to do that with you board but try it out. Henk VK2GWK >I'm having a very strange problem when programming a >PIC14000. I have MPlab Ver 4.12.12 and a PICSTART Plus >version 2.01.00 running on NT4.0 SP3. I'm using an eprom >version of the 14000 and when I program the chip even though >it verifies correctly, the chip will operate correctly about >every other time it is programmed. I've tried another 14000 >and the same thing happens. When the chip doesn't work it >sometimes is dead in the water when it powers up, but sometimes >the program will partially run. Then when I erase and reprogram >with no changes to the code it will run perfectly. Has anyone >experienced this type of problem or have any ideas on what is happening? > >I'm about to start using some OTP chips but am leery of the same thing >happening and I can't afford to lose half of my chips to this problem > >Any help is appreciated > >Roger