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Kevin Williams

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Kevin Williams last won the day on July 6

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  1. It will cost more, but the vision of the first step is through-hole and easy to understand. Later versions will be surface mount and cost reduced.
  2. Hi Everyone, If you happened to see David's video on the Color Maximite 2, then you probably noticed that the new Commander X16 PCBs have arrived! David @The 8-Bit Guy just happened to swing by my house the day they arrived, and he picked them up before I was even able to get all of the parts in. I am still waiting on a few things, so I haven't been able to complete assembly yet. The VERA is also not complete for this reason, but I had to mock it up for the pics! Bear in mind, this is not the correct case, this is from an old tower ATX case I had sitting around. It's a nice platform to mount the board and make sure I have the placement of screws, slots & of course the rear ATX panel aligned correctly. I will likely make a few placement tweaks but overall I am quite happy with the physical layout so I just had to post some photos! So far, it's working but my ATX soft-start circuit is a bit squirrelly. Not only that, I kinda wired it wrong and didn't catch it before the run. Worked great on the breadboard, but I will have to revamp that before the final. There are also a few other little things discovered since this proto was run, but the real tests will be coming when @Michael Steil is able to get the Kernal up and running. (I would write some test code, but one part I'm missing is the ZIF socket for the ROM. Should be here in a day or two.) @Perifractic is also sending me the X16 case, so I should be able to install the board in there later this week. Happy Sunday, and Take Care Everyone! -Kevin Williams https://TexElec.com
  3. Hi again! I've been working for quite awhile to get the new layout complete, and I think we are just about ready to run the second prototype! There are quite a number of changes to this board over the previous version, so I do expect a few, ahem, challenges perhaps? That said, a lot of time has been spent testing on breadboards and optimizing so I think we should be close to the final specs on this system. As mentioned, there are code breaking changes with the system. I will post more for the devs out there in a post below. The VERA has also changed quite a bit. Namely, it now has 32 registers, but I'll let @Frank van den Hoef talk more about that when he is ready to post some updates. Also, I made two proto boards to test the bus and get the alignment right for the final design. Progress is being made, thanks for everyone's patience and have a great day!
  4. Hello Everyone! I know it's been awhile since there has been an update, so here goes: Earlier this year I had mostly completed the "Proto #2" motherboard. It was a mad dash to get the PCB made before we met in New Jersey at VCF. Right at the end, @Frank van den Hoef made a pretty substantial change to the VERA, which required a bit of reworking. April came, the trip was cancelled and life went sideways for a bit for the world. As such, I decided I needed to focus on a few things for TexElec, and took a bit of time off from the project. Last month I picked up where I left off and planned to make minor changes for the VERA and get the PCB made. However, the team had some time to think and oversights and optimizations became apparent. One change led to another, and let's just say, we're gonna break some code. Sorry. I do believe the changes made will not disappoint. I'm not going to reveal them just yet. I am still laying out the PCB and would like to do some testing to make sure it's going to work as designed. I am trying not to release too much of the schematic until the end, as anything is subject to change at this point. The pic below is how I have the expansion bus pinned out. I may well move some the pins around to simplify layout, so again, not in stone yet, but I do think this is pretty close to what pins will be present. This post is majorly TLDR already, so I'll add a comment below with more info on the pins, and the idea behind some of it. Take care!
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