Sound Card for my 286 System
For my sound card, I plan to leverage previous work that I did for my 65816 system build. I will refactor the sound card to support my...
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rehsd
Jun 20, 20221 min read
Eater 8-bit CPU Emulator for my 65816 System
To practice my 65816 assembly, and refresh myself on Ben's 8-bit CPU... And an emulator running inside an emulator... 🙂 On my Windows...
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rehsd
Jun 17, 20222 min read
65816 System - June 2022 General Update
In January of this year, I decided to try to build a new system based on the 65816 processor. It has now been almost five months, and I...
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rehsd
Jun 15, 20220 min read
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rehsd
Jun 12, 20221 min read
480x320 Debug LCD for 65816 System
To enable more verbose debug logging at runtime, I have added a higher-resolution LCD. Communication from the 65816 is handled with SPI....
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rehsd
May 30, 20221 min read
65816 Sound Card Substantially Complete!
My sound card is now substantially complete, and I can continue working on system assembly code to better utilize it. I have the sound...
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rehsd
May 14, 20222 min read
65816 Sound Card: First Song Playback from SD Card (SPI) & Updated Output Schematic
I now have the onboard SD Card (SPI for communication) working on my sound card. I ended up going without the hardware shift registers...
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rehsd
May 5, 20222 min read
65816 Sound Card: First Song Playback from Onboard Media ROM
Continued from Sound Card 2.0 PCB Build (rehsdonline.com)... I now have playback working from the media ROM on the sound card....
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rehsd
May 4, 20223 min read
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, 20221 min read
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, 20222 min read
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...
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rehsd
Apr 24, 20222 min read
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, 20222 min read
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, 20221 min read
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...
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rehsd
Apr 20, 20222 min read
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 16, 20223 min read
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, 20221 min read
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, 20221 min read
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, 20224 min read
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...
351 views2 comments
rehsd
Apr 9, 20225 min read
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...
590 views4 comments
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