NOPPP, the "No-Parts PIC Programmer," is more fully
described in a magazine article.  Build the circuit shown,
run the program NOPPP.EXE on your PC, and you can program
PIC 16F84, 16C84, and 16F83 microcontrollers.

IMPORTANT PRECAUTIONS:

(1) When the NOPPP program starts, the power supply must
actually be disconnected, not just set to 0 volts.
That is, if the +5V line is grounded, the NOPPP program
cannot detect the NOPPP hardware.

(2) When running under Windows 3.1, NOPPP must apparently
run full-screen, not in a window.  If you have problems
under Windows 3.1, try running NOPPP under plain DOS.

(3) When running NOPPP under OS/2, hardware timer access
must be enabled.  (It's in the settings for the DOS session.)

Michael A. Covington
Consultant
285 Saint George Drive
Athens, Georgia 30606

