Monthly Tag


Have some fun! Explore the 52 articles tagged with monthly.
Tower of Love Was an Ambitious Idea That Failed
I had lots of ideas as a teenager. Many of them became actual programs, while others languish in my notebooks. Others made it a bit further, becoming programs on my ZX81, but never finished. A journey abandoned is still a journey. Let’s explore one such program this month: Tower of Love. A q…
Posted May 20 by Steven 5 min read

Quick, Stop the Bomber before It Destroys You
Wait what? Another month? Another game? You betcha! April is upon us, and pretty much over. So, to pass the time I introduce Blaster, a shooter with a twist. Use Z to move right, . to move left, and M to fire…
Posted Apr 19 by Steven 5 min read

How to Make a Bar Chart on Your ZX81
Taking a turn from games, March's program is a bit more useful. Although not as flexible as some modern programs, Bar Graph does the job. Add some data and print. What could be easier? Well, a lot. Making a bar graph or chart.Best have your information ready…
Posted Mar 24 by Steven 6 min read


Iíve 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…
Posted Feb 20 by Candy 6 min read

Fight Your Way to Victory with This ZX81 Space Shooter
Nothing starts the year out better than a space shooter. The top of the printout was quite faded, so I wasn’t sure about ZTSXXSTZ when I started to type it in. But, once I got the first few bits working I realized I had something worth sharing. Playing it for the first time…
Posted Jan 20 by Steven 4 min read

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. Decemberís 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 youíre ready, letís dig deeper. T…
Posted Dec 26, 2017 by Steven 4 min read

Star Fight Is a Simple ZX81 Shoot íEm up Game
Back in 1983, Star Wars imagery flooded my life. With the release of Return of the Jedi that year, it only fueled the inspiration of my young teenage self. So, it shouldnít come as a surprise that I would create games with that look and feel. Star Fight, this monthís program, is one such game. Slow…
Posted Nov 26, 2017 by Steven 5 min read

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 programs I don’t remember any around where I lived in Indiana. No matter. I still wrote a simple windmill animation…
Posted Oct 30, 2017 by Steven 5 min read

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. Letís explore Septemberís program of the month to see how that worked…
Posted Sep 25, 2017 by Steven 6 min read

Quickly Avoid the Spiders in the ZX81 Game Tarantula
Tarantula, Augustís 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 didnít let problems like the lack of a distribution channel tarnish my dreams…
Posted Aug 30, 2017 by Steven 6 min read

How Long Can You Last against the Attack
Wanting something interesting, I struggled to find a ZX81 program to share. Plus, it was getting close to the end of the month. Digging into my old notebook, I stumbled upon Missile Defense. Although short, I expanded it into a something worth playing. Let’s dig deeper. Signs of the times…
Posted Jul 27, 2017 by Steven 5 min read

My ZX81 Tic-Tac-Toe May Not Look Pretty, but You Can Win
As June winds down, I find myself reminiscing about writing monthís program. 34 years later, I still remember the glow of the TV as it lit the notebook in my lap. Although I have fond memories of Tic-tac-toe, time isnít as kind to it. Letís dig in. Would you like to play a game…
Posted Jun 25, 2017 by Steven 6 min read

Can You Get the High Score in the Worst ZX81 Dice Game
Okay, although not the worst ever, Dice Game is pretty dull. With only two dice, no strategy, and no replay value, you might think this an odd program of the month. But for the young teenager that wrote it, it was pretty cool in 1983. Letís dig in and see why. Itís all about the code…
Posted May 28, 2017 by Steven 7 min read

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…
Posted Apr 30, 2017 by Steven 6 min read

Bet and Win in Stud, a Simple ZX81 Poker Game
For Marchís program of the month, I offer up Stud. Written in 1984, it was my first computer card game. Calling it a card game is disingenuous as Stud is a simple high/low betting game. There are no rules or even a deck of cards. Yet simple can be fun in this random poker game. An infinite deck of …
Posted Mar 24, 2017 by Steven 3 min read

Pictures Are Pretty, How to Make a ZX81 Draw
Sometimes one function can do a lot. For Februaryís program, picture uses a line drawing routine to draw a pretty picture. Okay, pretty is in the eye of the beholder. But, nonetheless, it is a picture. The fun, though, is in watching it draw. A computer and a boat, together are art…
Posted Feb 25, 2017 by Steven 4 min read

Can you hack the computer and save the world?
ďAgent 51, your goal is within reach, but there is a problem.ĒďUnderstand,Ē you reply. Professional as always, you only allow a hint of annoyance in your voice. ďExplain.ĒďWell, the plans are in the room in front of you, but the floor is a trap…
Posted Jan 22, 2017 by Steven 5 min read

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…
Posted Dec 22, 2016 by Steven 4 min read

Can You Avoid Death in the ZX81 Game Stick Shift?
Dodging games were the rage back in the early í80s. Wanting to add my own take on the genre, I created Stick Shift, Novemberís program of the month. The goal is simple. Dodge other cars, oil spills and spikes while not crashing into the wall. Mess up? Well, itís game over for you…
Posted Nov 24, 2016 by Steven 3 min read

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 didnít have a picture. Finding that odd, I did some research and found that Iíd written a page for it back in 1999. To my surprise, Iíd never uploaded it…
Posted Oct 25, 2016 by Steven 3 min read

Trail Blazer is my ZX81 Tribute to Tronís Light Cycles
One of the coolest movies when I was a young teenager was Disneyís Tron. What geeky kid didnít 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…
Posted Sep 18, 2016 by Steven 6 min read

Electon is Augustís ZX81 Program
I painted more borders on the ZX81 than just about any other shape. An easy way to confine movement, it shouldnít come as a surprise that Electon starts by building a box. And before you ask, this monthís ZX81 program isnít another version of snake…
Posted Aug 22, 2016 by Steven 7 min read

Laser Blast is Aprilís ZX81 Program of the Month
April is close to wrapping up and I was able to find time this weekend to type in another ZX81 game. Laser Blast, this monthís program, has you saving the world. Kind of clichť I know, but hey this was 1984. George Orwellís novel didnít come true, but at least we could blast alienís with lasers…
Posted Apr 27, 2016 by Steven 1 min read

Computact is Marchís ZX81 Program
Ah, spring time. As winter melts away, the weather goes haywire and itís time to enjoy the bouts of sunshine, rain and the occasional thunderstorm of hail. Perhaps itís fitting that in the middle of this meteorological mayhem that Computact came back to life…
Posted Mar 22, 2016 by Steven 1 min read

Februaryís ZX81 Program: Telaport
Digging through my listings, I struggled deciding what to offer for February. The first one I found was an adventure text game. Too close to last month's program, I decided against it for now…
Posted Feb 27, 2016 by Steven 1 min read