Prepping My 6502 System for FPGA VGA
I made some updates to my 6502 system to get it ready for my FPGA VGA. Previously, my USB mouse took ten VIA pins (a bit of laziness on...
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rehsd
- Dec 15, 2021
- 2 min
FPGA VGA for 6502 System - Initial Prototyping
I am currently working on building an improved VGA circuit for my 6502 build. My goal is to offload the video processing and have better...
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rehsd
- Dec 14, 2021
- 5 min
Arty VGA Walkthrough
If you are looking to add the VGA Pmod to your Arty A7 and control output from MicroBlaze, the following are the steps I have taken to...
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rehsd
- Dec 11, 2021
- 1 min
Arty VGA Output from MicroBlaze
Continuing from my post FPGA VGA for 6502: Brainstorming... I am trying to find a decent solution to control VGA output from MicroBlaze....
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rehsd
- Dec 9, 2021
- 3 min
FPGA VGA for 6502: Brainstorming
I am currently brainstorming ways to add an FPGA-based VGA circuit to one of my 6502 builds. And... I have questions. :) As part of my...
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rehsd
- Dec 7, 2021
- 1 min
VHDL 8-bit CPU - Runtime RAM Updates
I have added UART support to my VHDL 8-bit CPU, along with a Windows application that allows retrieving and setting RAM values at...
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rehsd
- Nov 30, 2021
- 2 min
Troubleshooting a MicroBlaze UART
I am trying to determine why I am unable to communicate out through a UART on my Arty A7-100T. Any suggestions on how to troubleshoot...
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rehsd
- Nov 27, 2021
- 2 min
VHDL 8-Bit CPU (Ben Eater edition) Working!
As a continuation of FPGA VHDL Implementation of Ben Eater's 8-bit CPU - Progress Update, here's another update on my 8-bit CPU in VHDL...
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rehsd
- Nov 20, 2021
- 1 min
FPGA VHDL Implementation of Ben Eater's 8-bit CPU - Progress Update
I've been working on a VHDL implementation of Ben Eater's 8-bit CPU. I have VHDL modules built for the clock, registers, bus, RAM, ROM,...
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rehsd
- Nov 17, 2021
- 2 min
Connecting VHDL to MicroBlaze
Continuing my project of building Ben Eater's 8-bit CPU on an FPGA, I created the clock module in VHDL. I connected that VHDL to a...
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rehsd
- Nov 11, 2021
- 4 min
Arty A7 & OLEDrgb Pmod Walkthrough
My first attempt at getting Digilent's OLEDrgb Pmod working with an Arty A7 was unsuccessful. After a fair amount of troubleshooting and...
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rehsd
- Nov 9, 2021
- 3 min
Arty A7 & OLEDrgb Pmod Struggles
Update: I have the OLEDrgb display working! See bottom of post. Original Post First things first... I am new to FPGA development. I am...
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rehsd
- Oct 31, 2021
- 2 min
Power Distribution
As I've expanded my 6502 system, power distribution has been a challenge at times. My initial 6502 was built on BusBoard Prototype...
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rehsd
- Oct 23, 2021
- 2 min
Caution: Steep Learning Curve Ahead (for me)
For a while now, I've wanted to dig into field-programmable gate arrays (FPGAs). Today, u/Enlightenment777 provided the kick I needed to...
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rehsd
- Oct 22, 2021
- 6 min
Arduino Due, 6502, & SPI... oh my...
Previously, I shared how I was using an Arduino Nano to connect a 6502 to a PC to transfer image data from the 6502 to the PC. See 6502...
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rehsd
- Oct 22, 2021
- 1 min
6502 Audio PCB Complete!
I have posted previously about my journey to learn a bit about 6502 audio. (A Start to 6502 Audio, 6502 Sound Card -- Suggested changes...
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rehsd
- Oct 22, 2021
- 2 min
6502 Build with SPI & Audio: Progress Update
Last month, I transitioned the core of my 6502+VGA+PS2 build (based on Ben Eater's video series and kits) from breadboards to a PCB. My...
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rehsd
- Oct 12, 2021
- 1 min
Playing with Sounds on a YM2149 (6502)
As a continuation of Dynamic Sound Editor... I finished adding the remaining PSG configuration options to my 6502 Dynamic Sound Editor....
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rehsd
- Oct 11, 2021
- 2 min
Dynamic Sound Editor
I previously posted an overview of my 6502 audio setup. Since I have no background with 8-bit computer audio, I wanted to experiment with...
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rehsd
- Oct 9, 2021
- 2 min
6502 SPI Expansion Card
I'm finding SPI to be a nice way to connect my 6502 to additional devices, especially Arduino microcontrollers. Arduino microcontrollers...
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