PCjs Machines

Home of the original IBM PC emulator for browsers.


PCjs Programming Notes

We kick off the PCjs Document Archive with a couple of documents @jeffpar created in 1984, detailing his early adventures in PC debugging: disassembling and disabling dBASE III Copy-Protection.

dBASE III Copy-Protection

NOTE: PCjs also has copies of the dBASE III 1.0 diskettes.