As he explains in the video after the break, this project certainly won’t impress the folks that do PCB design on a daily basis but if you’re still learning the ropes, these are precisely the kind of projects you should be looking for.īefore any of you say it in the comments, we already know devices like this are available commercially for a few bucks.
But found it to be an excellent excuse to brush up his KiCad skills. The custom PCB is essentially just a pass-through, with an array of 3 mm LEDs and matching 10K resistors hanging off the data lines. Even from across the room he can tell at a glance if communication is active, and with a keen eye, determine if he’s getting bi-directional traffic or not.įrom a technical standpoint, this is a pretty simple project. Looking to troubleshoot some communications problems he was having between his computer and CNC router, came up with a handy little gadget that will allow him to visualize data passing through each pin of the parallel port in real-time. For example, the slower and less complex protocols can be a bit easier to debug when devices aren’t communicating, which demonstrates in his latest project. But that’s not to say there aren’t some advantages to using serial and parallel ports. Most modern equipment is connected over USB, and generally speaking we’re all the better for it. Video after the break.Ĭontinue reading “TNDLPT Brings Tandy Sound To Any DOS Computer” → Posted in Misc Hacks Tagged parallel, parallel port, SN76489, tandy 1000 Alternatively, get a different vibe with the OPL2 instead. It can also be used in a variety of other ways, such as with the TNDY tracker for music creation, or the SBVGM soundtrack player.įor those eager to hear the soaring 3 voices (and one noise channel!) of the SN76489 once again, this is a great way to do it, with kits available on the Serdashop site for those wishing to solder up their own. With the TSR loaded, classic DOS games can be used with the TNDLPT sound output by simply selecting the Tandy 1000 soundcard at install. The adapter consists of the SN76489, hooked up to the parallel port so that it can be addressed by the host computer via a DOS Terminate and Stay Resident program acting as a driver. This venerable sound chip can now be used on virtually any DOS machine, as long as it has a parallel port – thanks to the TNDLPT adapter! The Tandy 1000, among other contemporary computers and consoles of the 1980s, used the Texas Instruments SN76489 for its sound and musical output.
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