I thought Vpp could be operated at "normal" voltage levels. Perhaps the 10F322 does not have enough memory. It appears that only two digital pins are required ... so perhaps RA0-Out and RA3-In can be the serial port. RA1-IO and RA2-IO can drive the programming for the second module. >=20 > On Jan 18, 2012, at 1:23 AM, Jan-Erik Soderholm wrote: >=20 > You also need hardware to generate/drive Vpp. > And the question is of the 10F's has enough memory > for the full logic of a "programmer". >=20 > YES NOPE9 wrote 2012-01-18 06:49: >>=20 >> Am I correct that hardware-wise the PIC development board for $3.75 shou= ld be able to program another copy of itself ? >> https://www.microchip.com/forums/m625916-print.aspx >> What is required is software to bit bang emulate a serial port and to se= nd programming signals to a second board. >> RA0 and RA1 can be the serial port. >> RA2 and RA3 can drive the programming for the second module. >>=20 >> Is this correct ? >> 99guspuppet >>=20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .