18 years ago
comp.os.linux.development.apps , alt.os.openbsd
PG (Pulse Generator) program on the Pentium PC.
PG's Timing is very accurate in FreeBSD, Linux and pure-DOS.
PG can be run in Win98-DOS-BOX, but Timing is not good.
PG does not correspond to WinXP, 2K, and NT.
PG outputs psitive and negative pulse waveforms to parallel_port
simultaneously.(PG's maximum frequency is about 100kHz.)