These are the schematics and software for the 64 channel DMX printerport interface.
ASM-file for DMX-Interface (Thanks to Phillip Kay for fixing the XT osc problem)
HEX-file for DMX-Interface
Visual Basic 6 DEMO SOFTWARE, Source code included, Needs DLPORTIO (see the link page)
Interface timing. The "start" pulse should be at least 5mS long
Pictures of my DMX-dongle