65816 Build: First Code (ROM Running). Bank 0 RAM Working.
My address decode logic appears to be working (so far). I have a simple program running from flash ROM now. Bank 0 RAM now running. I...
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rehsd
- Jan 23, 2022
- 1 min
65816 First Fire Up - No Magic Smoke
Well, I have applied power. Magic smoke not detected. I haven't yet reviewed the monitored data to see if it matches what is expected at...
74 views1 comment
rehsd
- Jan 22, 2022
- 2 min
Researching memory map and decode logic for my 65816 build
For my current 6502 build, I'm using Ben Eater's design for the memory map and glue logic. As I'm thinking about my 65816 build, I'm...
213 views2 comments
rehsd
- Jan 15, 2022
- 1 min
Starting something new in February: W65C816S build
Starting in February, I'm going to take on a new challenge. I'm going to try and build a new system based on the W65C816S microprocessor....
158 views0 comments
rehsd
- Jan 9, 2022
- 3 min
Refactoring Music Playback
In my post Working on game music... need storage, I had started building game music and ran out of EEPROM space to store the music. Also,...
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rehsd
- Jan 4, 2022
- 6 min
Calling All SPI SD Card Wizards: Troubleshooting SD Card Access with SPI
Full data reading is now working! Progress Updates posted at the bottom... I am currently trying to get an SD Card reader working with my...
313 views0 comments
rehsd
- Jan 2, 2022
- 2 min
Working on game music... need storage.
I started working on some music for my game. In this video, I am using the sound card that I built for my 6502 system. All sound is being...
170 views0 comments
rehsd
- Dec 30, 2021
- 1 min
Dots connected... Retro gaming started...
I've finally been able to bring together many of the components of my 6502 system to support a retro-style game. The game will be a...
475 views0 comments
rehsd
- Dec 30, 2021
- 3 min
My Frankensteined 6502 - Five Months In
Over the past five months, I have built a few 6502 computers, starting with Ben Eater's 6502 kit. See My 6502+... a little background....
617 views9 comments
rehsd
- Dec 24, 2021
- 1 min
Enough Pieces to Build a Game?
I believe I have enough functionality in my 6502 system now to take a run at developing a retro-style game. So far, I have built support...
107 views1 comment
rehsd
- Dec 21, 2021
- 3 min
FPGA VGA for 6502 : First Run
I've made some decent progress getting my FPGA VGA working on my 6502 system. My goal is to have a "smart display" to replace the current...
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rehsd
- Dec 19, 2021
- 1 min
Cmod A7 FPGA : Video Test Pattern Generator
Below is the configuration I used to get the Xilinx Video Test Pattern Generator (TPG) working on a Digilent Cmod A7 FPGA. This is based...
198 views7 comments
rehsd
- Dec 18, 2021
- 2 min
VGA from Cmod A7 Working
Update: I have it working. See postscript at the bottom of this post. I am attempting to get the Arty Pmod VGA Demo running on a Digilent...
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rehsd
- Dec 18, 2021
- 1 min
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...
780 views0 comments
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...
248 views0 comments
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...
246 views0 comments
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...
112 views0 comments
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