rehsd

I picked up a large batch of (likely used) VIAs on AliExpress. They were inexpensive ($1.64 USD per VIA), and I don't expect they will...

I ended up removing the joystick ports from my sound card design, since I would like to have the primary system processor handle joystick...

As I'm learning and implementing assembly code for my 65816 PC, I'll post periodic updates here. I'm doing OK with the assembly so far,...

Back in January, I decided to start building a 65816 "PC." Up to that point, I had built a 6502 system with basic elements of a PC. The...

I'm working with what I have... I have a 65816 computer, and I want a USB mouse. I have a 6502 computer with USB mouse support. I have...

As I have now found some nice stability with my 65816 system running at 14.16 MHz, I thought I would come back to bus resistors and see...

My first attempt at sprite transparency... and it's pretty rough. I updated my image conversion application to support converting images...

I am working on the breadboard build of my Sound Card 2.0. I'll use this post for updates on my progress. I figure the breadboard build...

To facilitate developing new circuits for my 65816 system, I have designed an extension for my bus, leveraging the ISA physical...

With my 65816 system up and running, I can now start working on add-in cards. A simple one to start: an LCD. I designed the PCB to be...

Now that I have my 65816 motherboard working, I would like to improve speeds. The symptom that I see (and would like to improve) is that...

I'm getting close to having my 65816 PC updated with rev 1.1 PCBs (for the motherboard and video memory card). I have a plan for a USB...

Continued from VGA for 65816: First Run at Moving Content... My first animated sprite (32x32) on my 65816+VGA system! While the video...

So much room for improvement, but it's a start to moving content... The 65816 is running at 5 MHz for this test.

As I am working on my VGA card build, the next step for me is to improve the accuracy of the color output -- well, as accurate as I can...

I have started the assembly of my VGA card for my 65816 PC. In this running post, I will share my updates as I work through assembly,...

(Latest video posted at the bottom.) While I'm waiting for my 65816 system PCBs to come in, I thought I would see how far I can get with...

I will update this post as I work on my 65816 PC and identify mistakes in my 65816-related PCBs, so check back to see how they all pile...

I have the initial layout and routing working for my 65816 motherboard, video card (including memory daughter boards), and prototyping...

Continued from 65816: Driving VGA Through Dual-port SRAM... I made some progress today on my 65816 with VGA 2.0. Learned a bit about...