65816: VIA1 Working
I was able to get VIA1 working today! I have it addressed at $108000 and have decode logic working for this part of the I/O range. I...
top of page
Search
rehsd
Feb 28, 20221 min read
65816: Finally Making Progress
I've been a bit stuck for the last few weeks. See Troubleshooting 65816 ROM/RAM and Troubleshooting 65816 ROM/RAM, Part 2. Thanks again...
39 views0 comments
rehsd
Feb 26, 20223 min read
Troubleshooting 65816 ROM/RAM, Part 2
Earlier this month, I posted Troubleshooting 65816 ROM/RAM. I have updated that posting as I have had updates. Unfortunately, I have not...
95 views5 comments
rehsd
Feb 23, 20222 min read
Brainstorming: 65816 'Motherboard'
In my 6502 system, I use VIAs, pin headers, and ribbon cables to connect expansion cards (e.g., my sound card). While this has worked...
285 views1 comment
rehsd
Feb 17, 20224 min read
Walkthrough: PC Interface for Eater 8-bit CPU
Last year, I had completed my 8-bit CPU, based on Ben Eater's video series. At the end of this project, I added a couple of Arduinos --...
674 views2 comments
rehsd
Feb 10, 20220 min read
23 views0 comments
rehsd
Feb 9, 20221 min read
65816 (or 6502) Proto Board
As I've been trying to get my 65816 running, I've built a breadboard version and a solderable prototype board version. Managing the...
165 views2 comments
rehsd
Feb 5, 20225 min read
Troubleshooting 65816 ROM/RAM
Previously, I have been able to get ROM and RAM working together in my 65816 system, as seen here. However, I have had some sporadic...
145 views0 comments
rehsd
Jan 31, 20221 min read
65816 Build Update: Moving to Solderable Prototype Boards for the "Core"
Previously, I was able to get my 65816 working with ROM and basic RAM. Since then, I have moved my address decode logic from the...
132 views0 comments
rehsd
Jan 31, 20221 min read
A Start to Video Output for My 65816
For my "VGA 2.0" circuit, I am going to try and get 320x240x1byte running. To support this, I will be using three IDT7007 dual-port SRAM...
234 views1 comment
rehsd
Jan 25, 20221 min read
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...
107 views0 comments
rehsd
Jan 23, 20221 min read
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...
97 views1 comment
rehsd
Jan 22, 20222 min read
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...
266 views2 comments
rehsd
Jan 15, 20221 min read
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....
195 views0 comments
rehsd
Jan 9, 20223 min read
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,...
144 views0 comments
rehsd
Jan 4, 20226 min read
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...
469 views0 comments
rehsd
Jan 1, 20222 min read
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...
202 views0 comments
rehsd
Dec 30, 20211 min read
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...
480 views0 comments
rehsd
Dec 30, 20213 min read
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....
745 views9 comments
rehsd
Dec 24, 20211 min read
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...
112 views1 comment
bottom of page