Posted on Leave a comment

The SNES Adapter for Attack of the PETSCII ROBOTS

This video describes how the SNES adapter works for The 8-Bit Guy’s new game Attack of the PETSCII ROBOTS. It discusses the pinout for the connector, how it was designed to work on multiple systems and how to connect the power and audio to the Commodore Pet. There is also some bonus footage at the end showing the construction of the adapters. Thanks for watching!

Posted on Leave a comment

Update to the IBM PS/2 to Standard Floppy Adapter

First, we have the adapters back in stock! More importantly, we want to make you aware of a small issue.

If you have one of the original adapters with a yellow resistor pack, and you are having issues, please feel free to contact us and we will be happy to chat with you about fixing this issue.

Please read Kevin’s details below, we have also added this information to the top of the product description:

The first batch of floppy adapters we sold had a few reported issues, so I took some time earlier this week to perform more extensive tests.  With only one adapter and one standard floppy or HxC, they work very reliably from several tests.  I was able to get some combinations of floppy drives to work using two adapters, but they did hesitate at times and could cause disk read errors.   Others would not work together at all, or only one drive would work properly.  The original design seems to be unreliable in certain combinations.  After some analysis we changed the resistor pack values to a less aggressive value and now all my standard floppies work together fine or standalone.

There is one bit of bad news however, the adapter will not work as a second or primary drive while using an original IBM drive.  I thought I had tested this before, but I realize now that I only made sure the drive would get through post, which it will without issue.  However, it will not work with one of the adapters installed.  This is what bogged me down this week and why we are a little later than planned on the release of the second batch.  Sadly though, I have not been able to answer why and at this point I want to make sure anyone who wants an adapter understands the limitations.  Fortunately, I suspect most folks are looking for a single drive to work in the PS/2, and it is certainly fine for that.

Posted on Leave a comment

LGR Reviews the Resound 2 MCA OPL3 / Adlib Clone

LGR has allowed me to procrastinate on another video I should have made to show this card! He does a quick blerb on our new Resound 2 MCA OPL3! It’s a great way to see the installation of the card, as well as a demo of it in action. Check it out here: https://www.youtube.com/watch?v=fVFl2v_TS3E

Here is a link to the card in our store: https://texelec.com/product/resound-2-opl3-mca-for-adlib-compatible-card-for-ibm-ps-2-microchannel-computers/

And thanks again Clint!

Posted on 1 Comment

New Prototype Complete! Resound 2 MCA aka PS/2 Microchannel!

Pardon the mess, but it works! Ok, I’m getting ahead of myself, here is our latest working prototype the Resound 2 MCA! What is it? It’s a stereo Yamaha OPL3 (OPL2/Adlib compatible) sound card for the IBM PS/2 microchannel bus! I don’t usually like to show prototypes, but it was just too exciting hearing sound from a PS/2 machine this evening, so I had to show it!

TubeTime recently completed a replica of the Adlib for the MCA bus and I was very interested in the heart of his card, the P82C611 MCA bus controller. After doing quite a bit of deciphering of datasheets and schematics I was able to adapt the OPL3 chip to work on it just fine! The P82C611, while a bit difficult to get a hold of, does give me a lot of ideas… 🙂

I am performing a few minor fixes to the card, and I will be send off for them very soon and hope to have them available for sale within a month!

BTW… We have several new products coming out soon. I was doing a lot of design work during the lockdown, and a few things are about to hit the pipeline. Stay tuned for more updates soon!

Posted on Leave a comment

SAAYM Pre-Release Sound Card

Happy Thanksgiving from TexElec! We hope you’re having a great holiday! I have a quick update to share on the SAAYM dual SAA1099 & YM2151 ISA sound card. I spent about a week tweaking the audio levels and incorporating several changes into the card to get it where it needed to be. I sent it off for a small pre-production run a little over a week ago. Late last evening, DHL showed up with our boards and we immediately went to work building one. Just after midnight, our first test was immediately a success! The card is now recognized as a CMS / Gameblaster and works with DOS games which support it. SBVGM v1.7 by OPLx also supports this card and will playback VGM/VGZ files in DOS on real HW! There are a few more cool features on this card I will discuss in more detail upon release which I hope to be in the next few weeks! I have a few minor physical tweaks to do, but here is a sneak peek of what the final card will look like. Take care everyone!

Posted on Leave a comment

Dual SAA1099 & YM2151 ISA Sound Card “SAAYM” Demo – Commander X16 Audio System

Hey Everyone! I’ve been working on a ISA card for the PC with 2 SAA1099s & 1 YM2151. It’s not complete yet, but it is working, mostly. (I plan Gameblaster / CMS compatibility, but I made a little mistake, which will be resolved.) I designed this so I could tweak the audio circuit for the final system, and have at least part of the Commander X16 sound-system available on another platform. It’s working well enough for a demo, so here goes!

Posted on 2 Comments

Commander X16 – The Prototype is Working!

Hello Everyone! Have you been wondering what we’ve been up to all year? We planed to develop and release new products but it seems fate had other plans. Many of you may know that we’ve been working with The 8-Bit Guy on various aspects of the Commander X16 project. As time progressed, we were tasked with developing the motherboard itself! It’s been several long months of reading data sheets, forums, and routing in KiCad; but the prototype machine is complete, and it works! David just completed the second video for his “Dream Computer” series and it explains the system with great detail. Thanks to David and the whole Commander X16 team for making this all possible, it’s really amazing to be part of this project!

(Just as a little inside for my followers, we do have it working @ 8Mhz now, it just didn’t make the cut.)