rehsd

As a follow-up to VGA Next: 640x480 ISA Card, I now have a functional version of an ISA VGA card working. The card supports 640x480 with...

One of my goals for my 286 system is to run MS-DOS at some point (ideally, 6.22). To get to that stage, I have some heavy lifting to do....

As a follow-up to Brainstorming... Video Card for 286 System, I am now working to get my VGA card working in my 80286 system. Initial...

I am researching options for a video card for my 80286 system. I will update this page as I learn more. Related: VGA Add-in Card for My...

To enable more verbose debug logging at runtime, I have added a higher-resolution LCD. Communication from the 65816 is handled with SPI....

Previously, I designed a PCB for my 6502, PS/2 keyboard, and VGA. The design is based on Ben Eater's video series. The only addition I...

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...

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

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,...

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...

At the end of January, I posted A Start to Video Output for My 65816, where I built a stackable dual-port SRAM PCB that could later be...

Continued from VGA 2.0: First fire-up of the basic circuit... Here's my obligatory finch post: I can probably work on the resistor values...

I have fired up the basic circuit for my VGA 2.0 (320x240x1byte). I can't say it's pretty, but it's at least outputting something. Now,...

I have recently started using programmable logic devices (PLDs) in some of my projects. Below are the steps I am using, along with some...