Eater 6502+PS2+VGA PCB - Building Your Own
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...
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rehsd
- May 4, 2022
- 3 min
65816 Motherboard - Building Your Own
I have received several inquiries from others wondering about building their own version of my 65816 motherboard. If you're interested in...
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rehsd
- Apr 30, 2022
- 1 min
Emulator^2 -- Sound Card Emulator
Continuing with my 65816 Emulator series, my 65816 PC build is now to the point where an emulator for my sound card would be helpful. I...
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rehsd
- Apr 28, 2022
- 2 min
Sound Card 2.0 PCB Build
In this running post, I will share the buildout of my sound card for my 65816 PC. Having the PCB in hand, I can say this will be the...
634 views0 comments
rehsd
- Apr 27, 2022
- 1 min
VIA Tester Add-in Card
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...
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rehsd
- Apr 27, 2022
- 1 min
Joystick Add-in Card
I ended up removing the joystick ports from my sound card design, since I would like to have the primary system processor handle joystick...
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rehsd
- Apr 24, 2022
- 2 min
65816 Assembly Coding Series
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,...
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rehsd
- Apr 22, 2022
- 2 min
65816 PC Build Update (April 2022)
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...
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rehsd
- Apr 21, 2022
- 1 min
USB Mouse Add-in Card for My 65816
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...
215 views2 comments
rehsd
- Apr 20, 2022
- 2 min
Experimenting with Bus Resistors
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...
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rehsd
- Apr 20, 2022
- 1 min
Sprite Transparency
My first attempt at sprite transparency... and it's pretty rough. I updated my image conversion application to support converting images...
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rehsd
- Apr 16, 2022
- 3 min
Sound Card 2.0: Breadboard Build (running post)
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...
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rehsd
- Apr 15, 2022
- 1 min
ISA Slot Extension and Proto Board
To facilitate developing new circuits for my 65816 system, I have designed an extension for my bus, leveraging the ISA physical...
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rehsd
- Apr 15, 2022
- 1 min
LCD Add-In Card
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...
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rehsd
- Apr 13, 2022
- 4 min
65816: Working to Improve Speeds
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...
277 views2 comments
rehsd
- Apr 9, 2022
- 5 min
Sound Card 2.0 for 65816 PC (maybe a little overboard, but I'm OK with 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...
467 views4 comments
rehsd
- Apr 9, 2022
- 1 min
65816+VGA: First Moving Sprite
Continued from VGA for 65816: First Run at Moving Content... My first animated sprite (32x32) on my 65816+VGA system! While the video...
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rehsd
- Apr 7, 2022
- 1 min
VGA for 65816: First Run at Moving Content
So much room for improvement, but it's a start to moving content... The 65816 is running at 5 MHz for this test.
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rehsd
- Apr 7, 2022
- 2 min
VGA for 65816: Start of Color Calibration
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...
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rehsd
- Mar 31, 2022
- 4 min
VGA Add-in Card for My 65816 PC
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,...
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