Shuffling bits for fun and profit(?)   Last time, we got the F18A physically repaired and running off Veronica’s power supply. Things seemed to be

One step back, two steps forward.   If you’ve been following this Put-An-F18A-In-Veronica drama, you know that we had some very light early successes, followed

THIS IS FINE.   After the incredible success of our last bit of work on Veronica’s F18A, I was very excited to get started on

Do not go gentle into that good night.   Just when things were starting to go really well on the Put An F18A In Veronica

It was the best of times, it was the worst of times. With our recent success in remembering how to do address decoding, it was

Bridging The Gap   As you probably know if you’re the kind of person who follows this blog, the 6502 CPU (the 1970s chip around

Time for our girl to learn some new tricks.   If you were to ask me what questions I get asked the most in my

For the first time ever, our girl didn’t show up for work.   Veronica has been making the rounds of makerspaces, conferences, etc lately. She

Quinn meets Hack-A-Day. Thousands dead. Film at eleven.   Let me open this post with a bit of administrative news. I’m now a Patreon Creator! For

Have 6502 Will Travel.   I wanted to let everyone know that I’ll be bringing Veronica to KansasFest this year. In addition to having the

Booting into a useful state.   A common feature of 1980s computers is that they booted into a useful state. This was one of the

Making Veronica fit for the open road.   One of my earliest goals for Veronica was to be able to take her places. Perhaps a

Keyboards and gamepads and ports, oh my!   With Veronica’s input systems working in prototype form, it’s time to get it all installed in the

Adventures with 40 year-old chip bugs.   It seems like every Veronica project I start is “a pretty straightforward thing that shouldn’t take too long”,

Some Input to go with all that Output.   There are moments in a big project like this that really stand out. Those moments where

Making RAM and EEPROM play nice together.   If you had told me ahead of time how much trouble the RAM board would cause, I

Just when you thought it was safe to call yourself Turing-complete.   Veronica seemed to be humming along nicely with her new RAM, and I

Minor growing pains.   Veronica has developed a minor problem. She’s outgrown her backplane! When I started this project, I thought a fair bit about

Making our girl Turing-complete.   It suddenly occured to me that Veronica is missing something rather important which is needed to be called a “computer”.

Cross-developing on homebrew 6502s and other single board computer projects.   Over on Veronica, things have progressed to the point of needing some fairly substantial

By popular demand.   Housekeeping Note: I’ve added a new column on the left that groups Veronica posts together. If you want to follow this

Just when you thought it was safe to render.   If you recall from last time, I had Veronica’s GPU board all built, and successfully

Making Veronica’s video permanent.   Now that the video board seems to be working, it’s time to make it a real PCB so it can

It’s been a long time coming.   It’s been quite an odyssey getting to this point. One of the tougher challenges I’ve encountered so far

Coding in style with open source tools.   I need to take a quick segue here to talk about the toolchain I’ve been using to

Getting the VRAM to play well with others.   The next step in getting Veronica’s VGA board up and running is setting up a way

Taking stock and making plans.   Sometimes, in order to move forward, you have to take a step back. When last we met Veronica, she

Video memory for our girl.   I considered subtitling this article, “adventures in breadboard noise”, since that’s what I spent most of my time dealing

Bit-banging a VGA signal generator.   Computers aren’t very exciting until they have a display of some sort. Well, I suppose if you’re at Bletchley

A little something to keep the mice from eating Veronica’s wires.   Well, I finally got back to working on Veronica, but this project is

ROM board with built-in EEPROM programmer.   It seemed so simple. The best ideas always do. However, sometimes the smallest problems end up taking the

An onboard way to program an EEPROM, or fake one.   Well, now that Veronica is up and running in real hardware form, she needs

A real copper home for our girl.   Now that we have Veronica’s backplane mostly sorted, we have everything we need to move the 6502

Time to get serious.   Well, Veronica is alive, and running code that we can put (very slowly) into memory. So far so good, but

Real memory!   If you recall from last time, we got Veronica to perform a free run by NOP-ing her way through a phantom memory

Veronica.   Now for something a little different. I was first exposed to computers back in the late 1970s and early 1980s. Suffice it to