Retro Tag


Have some fun! Explore the 106 articles tagged with retro, page 4.

How to Make Digital Rain on Your ZX81

How to Make Digital Rain on Your ZX81

I’ve been wanting to create my own version of digital rain for some time. The effect is well known from the Matrix movies, which used florescent green characters. Inspired by that version, I decided to go retro and generate a black and white stream of characters using the ZX81. Let the geekiness begin.


Watch This Great Remake of Flywheel on the TRS-80

Fly Wheel by Jim Gerrie

While digging around my site’s SEO this morning, I ran across these great videos from Jim Gierrie. Both depict his remake of Flywheel on a a TRS-80 MC-10. He had shared in a comment on my site, but I’d missed it given how busy last year had been. I love that Jim took the concept and made it his own, exactly the purpose of this site.



What Can You Do with a Simple ZX81 Animation?

What Can You Do with a Simple ZX81 Animation?

Although may of my early programs were games, I spent a fair amount of time experimenting. December’s program, Slow Down, is one of my animation experiments. It is a straight forward sprite animation, with a twist. I used the ZX81 against itself to slow it down. If you’re ready, let’s dig deeper.



Windmill Is a Quick and Dirty ZX81 Animation

Windmill Is a Quick and Dirty ZX81 Animation

There are a ton of windmills in Idaho. Mostly big ones for power, but you see a few smaller ones used for irrigation and wells. But, when I wrote this month’s program, I couldn’t remember any being around where I lived in Indiana. No matter. I still wrote a simple windmill animation, and today is the day to share it.


Tabular Is My Simple and Easy ZX81 Word Processor

Tabular Is My Simple and Easy ZX81 Word Processor

To date, most of my programs have been games and animations. It may come as a surprise that I also wrote a word processing program. Using a custom printer command, I designed a font that would allow you to use lowercase letters. Let’s explore September’s program of the month to see how that worked.


Quickly Avoid the Spiders in the ZX81 Game Tarantula

Quickly Avoid the Spiders in the ZX81 Game Tarantula

Tarantula, August’s program of the month, was part of a pair of games that made me think I was a game developer. At the age of fourteen, I didn’t let problems like the lack of a distribution channel tarnish my dreams. Although I didn’t make it into gaming, it’s still fun to look back on what could have been.





Bringing an Old ZX81 Sketch to Life with BASIC Is Absolutely Crazy

Bringing an Old ZX81 Sketch to Life with BASIC Is Absolutely Crazy

Foreign to many developers today, I have a notepad and binder full of ideas from my ZX81 days. The notepad contains early program snippets. In contrast, I have sketches and designs crammed into a binder. Flipping through it, I landed on a Star Wars sketch that became the basis for this month’s program.




Can you hack the computer and save the world?

Can you hack the computer and save the world?

“Agent 51, your goal is within reach, but there is a problem.” “Understand,” you reply. Professional as always, you only allow a hint of annoyance in your voice. “Explain.” “Well, the plans are in the room in front of you, but the floor is a trap. You need to deactivate it using the terminal to your right.” You look down at the screen, a singular “READY” stares back at you. “Sounds easy enough,” you reply. “It isn’t. The interface is protected and, sadly, our operative died before he could tell us the code.” “So what do I do?” “You’re going to have to hack it. Our operative left a back door into the system, if you can find it. You can do it, Agent 51.” You nod at the voice in your ear. You can do this. Play begins with imagination. Computers are great for role playing and Code IV was one of my programs that helped enable a story. As a kid, I often augmented my play using my ZX81. Although the narrative above isn’t exact, it embodies what I was thinking when I wrote this month’s ZX81 program. Fun, adventurous, and unfair, can you crack the code and disable the floor?


Can you guess the right code to win?

Can you guess the right code to win?

I used to play Mastermind when I was a kid, a simple code breaking game. One player would set up a sequence of colored pegs and the other would have to guess it in a set number of turns. My version, called ZX Master Mind, has the computer creating the code. Can you guess the three numbers in sequence before your ten turns run out?


Can You Avoid Death in the ZX81 Game Stick Shift?

Can You Avoid Death in the ZX81 Game Stick Shift?

Dodging games were the rage back in the early ’80s. Wanting to add my own take on the genre, I created Stick Shift, November’s program of the month. The goal is simple. Dodge other cars, oil spills and spikes while not crashing into the wall. Mess up? Well, it’s game over for you. Don’t fret though, it isn't that hard—yet.


Bugers Will Kill You in October's ZX81 Program of the Month

Bugers Will Kill You in October's ZX81 Program of the Month

While working to improve the way I display my ZX81 programs, I ran across one that didn’t have a picture. Finding that odd, I did some research and found that I’d written a page for it back in 1999. To my surprise, I’d never uploaded it. To rectify that oversight, I made Bugers this month’s program.


Trail Blazer is my ZX81 Tribute to Tron’s Light Cycles

Trail Blazer is my ZX81 Tribute to Tron’s Light Cycles

One of the coolest movies when I was a young teenager was Disney’s Tron. What geeky kid didn’t want to watch a movie about computers and video games? Sprinkle in some computer animation and how could I not fall in love. Needless to say, Tron was the inspiration for more than a few of my programs. Trail Blazer, September’s program of the month, is one of them. An homage to the light cycle segment, the goal is to crash your opponent first. But beware. All walls are deadly, including your own.


Electon is August’s ZX81 Program

Electon is August’s ZX81 Program

I painted more borders on the ZX81 than just about any other shape. An easy way to confine movement, it shouldn’t come as a surprise that Electon starts by building a box. And before you ask, this month’s ZX81 program isn’t another version of snake. Instead, you use the Z, X, N, and M keys to move in an attempt to capture the Electon. Sounds easy? Better give it a try and see.


3D Image is July’s ZX81 Program

3D Image is July’s ZX81 Program

Not everything I wrote on the ZX81 was a game, although I did write a lot of those. In fact, some of my first computer programs did nothing more than print pictures. 3D Image, a badly named program, is one of my experiments in animation on the ZX81. Depicting a sun at the end of its life, it’s a uses simple math to generate an image.



Vargen Crown is June’s ZX81 Program

Vargen Crown is June’s ZX81 Program

“Jealous of Vargen’s accomplishments, a rival kingdom has attacked and kidnapped your king. As head Knight, you mount a quest to return the King, hidden somewhere in the forest by his captors. But hurry! The King's ransom has a time limit. Can you find the King in time and restore the Vargen Crown?” Sounds great right? An adventure game set in a single screen. I had high hopes for Vargen Crown. Castles, keys, and puzzles, our program of the month covered the basics of adventure. Using just the ZX81 cursor keys, playing it will leave you unsatisfied and, I suspect, quite frustrated. It’s too bad as the game has a decent look to it. I chalk it up to being a young programmer, but that's not an excuse. Still interested? Let’s dig in and see what makes this game tick.


Up Is Down in Faller, May’s ZX81 Program

Up Is Down in Faller, May’s ZX81 Program

Walls and creatures always make for a nice game and Faller, our program of the month, has both. It takes a bit of imagination, but watch the icky spider climb up the wall towards you. Their goal, of course, is to knock you off and claim the wall for themselves. Like any good hero, you sit at the top and move over the spiders using Z and .. But be quick and knock them off using M to save the day. Just don’t be a faller should you miss.