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)

 

picdmx.jpg (115852 bytes)

Interface timing. The "start" pulse should be at least 5mS long

dongle_timing_ok.jpg (35427 bytes)

Pictures of my DMX-dongle

donglepic1.jpg (38369 bytes)

donglepic2.jpg (40731 bytes)