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Posted Jul 23, 2014 by Steven in ZX81 Computer 3 min read

Sorry, still no Joust. It’s not where I want it and I’ve spent July working on my novel instead. That isn't to say that I’m going to leave July without a program of the month. Instead I’ve pulled from my original site to bring you one of my favorite programs, Block £ Spear. In this game you'll find yourself at the wrong end of a knight’s spear. Fortunately, you have a shield and can easily deflect the spear by using the Z and . keys to raise or lower your shield. Sounds easy? You might be surprised.

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# animation²⁰  # basic²⁸  # game⁵¹  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Jun 08, 2014 by Steven in ZX81 Computer 3 min read

Okay I haven’t finished my remake of Joust yet, nor did I want to wait until the last week of the month to get an article out. Instead, I offer you Monster Maker as June’s monthly program. It’s pretty straight forward and anti-climatic against the power of today’s programs. Once you load it, enter in five numbers and type your monster’s name. That’s it. The program will then display a nicely formatted monster description based on your input.

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# adventure⁷  # basic²⁸  # game⁵¹  # monster⁵  # monthly¹⁷²  # programming⁶⁷  # rpg⁷  # zx81²¹⁶ 

Posted May 28, 2014 by Steven in ZX81 Computer 5 min read

I actually started working on May’s program of the month, Joust, about three weeks ago. My goal was to update the program to a faster and more fluid MCODER version. Sadly, things haven’t gone so well. Pressed for time, I will leave you instead with my original take on this popular arcade from the 80s.

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# animation²⁰  # arcade³  # game⁵¹  # graphic²⁰  # joust¹  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Apr 27, 2014 by Steven in ZX81 Computer 3 min read

April has been a crazy month. I decided to try something new, pushed along by an unexpected event. I’m writing a book. I joined NaNoWriMo just after last November's event so I didn't expect to do anything until later this year. The surprise was there CampNaNoWriMo event in April. Not to waste the opportunity, I’ve been busy crafting my Sci Fi novel and am now in the final stretch to my 50,000 words goal. Add on top of that a business trip and a family trip and you'll quickly see that my ZX81 hobby gets pushed by the wayside.

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# animation²⁰  # car⁶  # driving²  # monthly¹⁷²  # programming⁶⁷  # racing³  # zx81²¹⁶ 

Posted Mar 29, 2014 by Steven in ZX81 Computer 4 min read

For March's program of the month, I drew inspiration from one of my older demo’s, The Ball. Like many young kids from the early eighties using BASIC, I took a stab at animating a bouncing ball. It is a a relatively easy program to write depending on how complex you want to make the math. In my case, it is very simple math, no physics involved here.

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# animation²⁰  # basic²⁸  # demo⁴  # graphic²⁰  # mcoder⁶  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Feb 16, 2014 by Steven in ZX81 Computer 4 min read

For February, I give you Time, a simple landing game with a twist. Using the Z and . keys, you maneuver your craft to each successive landing pad. If you miss the landing, keep trying but be careful. Run out of time and it’s game over! How high of a score can you amass? A fair warning, Time isn’t always fair.

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# 1985¹¹  # game⁵¹  # graphic²⁰  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Jan 05, 2014 by Steven in ZX81 Computer 5 min read

January’s program of the month, Fireball, marks a first for me. Although I’ve used a few different methods to type in my programs, I’ve always gone back to a Windows so I could use EightyOne to generate the program files and images. However, for my birthday, my wife took me to the Apple store and I upgraded my old laptop to a shiny new MacBook Pro.

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# 1984¹⁵  # eightyone²  # macbook²  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Dec 30, 2013 by Steven in ZX81 Computer 3 min read

Winter has set in and it is time to close out the year with a simple game. Dollar Sign, December’s program of the month, is that game.

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# basic²⁸  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Nov 30, 2013 by Steven in ZX81 Computer 7 min read

For November, I’m looking both forwards and backwards. Although I wrote SNUNCH in 1983, I added a corrected version to my first ZX81 web page in the ’90s. SNUNCH was my early attempt at writing a PAC-MAN like game. Note that I said like, not clone. My goal was to be inspired, not to copy. Sadly, it isn’t very good, even after I fixed some of its logic flaws. Despite its flaws, I still believed it had potential and I set about updating it using MCODER II. It is this improved SNUNCH ML version that I offer as November’s program of the month.

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# 1983⁹  # basic²⁸  # game⁵¹  # mcoder⁶  # monthly¹⁷²  # pac-man³  # programming⁶⁷  # zx81²¹⁶ 

Posted Oct 19, 2013 by Steven in ZX81 Computer 4 min read

Since it’s been a few months since I’ve presented an animation program, I hereby offer October’s program of the month Space Dock. Written when the space shuttle program was in full swing, Space Dock depicts a shuttle launch for its scheduled docking to repair a satellite.

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# graphic²⁰  # monthly¹⁷²  # notebook³  # programming⁶⁷  # space¹⁰  # zx81²¹⁶ 

Posted Oct 01, 2013 by Steven in ZX81 Computer 3 min read

I took a break from educating myself on z80 machine code, more on that later, to fix a few things that have bugged me about the site. They are minor and probably will go completely unnoticed by most, but I wanted to make a quick note for future reference. Hey that’s what blogs are for, right?

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# code⁷  # html¹⁰  # machine²  # perl¹⁴  # zx80¹  # zx81²¹⁶ 

Posted Sep 21, 2013 by Steven in ZX81 Computer 3 min read

October’s program of the month is S.M.P. or Sinclair Memo Pad. A simple scrolling editor that allows you to take a couple of quick notes that last as long they are on-screen.

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# editor⁴  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Aug 29, 2013 by Steven in ZX81 Computer 2 min read

While searching for some code examples I ran across this inventive hardware expansion. Michel created a ZX81 Nixie Clock and has been kind enough to share his creation with the world through Facebook.

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# clock²  # expansion¹  # facebook³  # geocities⁷  # hardware³  # nixie¹  # tube¹  # vacuum¹  # website¹²  # zx81²¹⁶ 

Posted Aug 08, 2013 by Steven in ZX81 Computer 3 min read

Whoa, it’s August already? Time for another program of the month. Coming your way is Parachute, a deceptively simple reflex game that uses recognizable graphics to give you an enjoyable causal gaming diversion. I’ve been staring at this program for months now as it was sitting on the top of the stack. The airplane and parachute graphics stand out prominently in the listing, making it hard not to notice. As much as I tried to ignore it, Parachute was calling me to type it in. I finally caved and obliged.

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# 1985¹¹  # graphic²⁰  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Aug 08, 2013 by Steven in ZX81 Computer 1 min read

I wasn’t sure in my last post how to remove the extra space from the program listings. Well, I figured it out.

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# css¹³  # listing⁴  # programming⁶⁷  # zx81²¹⁶ 

Posted Aug 04, 2013 by Steven in ZX81 Computer 2 min read

Awhile back I went searching for a decent ZX81 font and ran across ZX81 VDU. I played around adding it to my site’s footer, but I really wanted to do more with it. It’s pretty good and, unlike some other fonts I found, it has all the ZX81 graphic characters. You do have to carefully choose the font size, but that is minor issue. Overall a great font that is easy to use.

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# css¹³  # graphics⁸  # listing⁴  # program¹  # zx81²¹⁶ 

Posted Jul 25, 2013 by Steven in ZX81 Computer 2 min read

I often search around the web looking to see what kind of ZX81 community still thrives. I truly expected to find a community in decline, but a surprising number of nostalgia sites are still out there. I found some dedicated to hardware, some to emulating, and others to software. Some are reference sites offering up tips and how to do things. Others simply have reviews of software from a different era. All of them interesting in their own way.

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# gaming⁵  # link¹  # retro¹²⁸  # sharing²  # sites¹  # web⁹  # writing⁵  # zx81²¹⁶ 

Posted Jul 21, 2013 by Steven in ZX81 Computer 4 min read

July is almost half over, but we still have time for our program of the month: Spiders & Flies. You play a growing Venus flytrap that is searching for flies and special bugs. Use the ZX81 arrow keys to move around: 5, 6, 7, and 8. But be careful. Don’t eat the spiders lurking about or accidentally eat yourself. It’s a super easy game so you have no excuse for not trying it out.

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# 1985¹¹  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Jun 18, 2013 by Steven in ZX81 Computer 2 min read

Blast Off, June’s program of the month, is a simple game that tests your typing skills. You may find it a bit easier to play on an emulator than on a real ZX81. Fortunately, you can try now! It isn’t a very hard game if you are decent typist. It would also work well for those practicing their typing skills.

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# 1985¹¹  # monthly¹⁷²  # zx81²¹⁶ 

Posted May 19, 2013 by Steven in ZX81 Computer 4 min read

Well it is getting late in the month and I didn’t want to pull another last-minute update. To make things a bit interesting, I used Zed Ex on my Android tablet to enter in this month’s entry. More on that in a bit. Let me first introduce our deliciously short entry for May: Up-Cake. A fast and simple scrolling game that is easy to play and hard to lose at. My kind of game!

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# 1985¹¹  # game⁵¹  # graphic²⁰  # monthly¹⁷²  # zx81²¹⁶ 

Posted Apr 30, 2013 by Steven in ZX81 Computer 2 min read

Late and last-minute, I present April’s program of the month Star Dodge. A decidedly simple game that requires you to dodge stars randomly placed on the screen. Can you get your Tie Fighter shaped ship, an inverse H, past the increasingly more dense stars? Give it a try to see.

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# 1984¹⁵  # game⁵¹  # graphic²⁰  # monthly¹⁷²  # programming⁶⁷  # zx81²¹⁶ 

Posted Mar 15, 2013 by Steven in ZX81 Computer 3 min read

In 1984, I moved that Summer from Italy back to the US. As I was Flipping through my old printouts, I ran across one that I had marked as the last program I completed In Italy. How cool is that? Seeing this, I just had to make Raider V my program of the month for March.

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# 1984¹⁵  # daitarn³  # game⁵¹  # graphic²⁰  # monthly¹⁷²  # zx81²¹⁶ 

Posted Feb 24, 2013 by Steven in ZX81 Computer 3 min read

The old saying “time flies when you’re having fun” is so true of late. This year started with a bang and I feel like I’ve been running ever since. It isn’t that I haven’t wanted to work on my old ZX81 programs, but they often take a back burner to other past times. That said, I did find some time to sit down this weekend to type in another program. For February I present you with ENLARGER.

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# 1984¹⁵  # animation²⁰  # graphic²⁰  # monthly¹⁷²  # zx81²¹⁶ 

Posted Jan 28, 2013 by Steven in ZX81 Computer 2 min read

Another year, another month, and now another program to celebrate 2013. January’s program of the month is an old one: Hit Man. From 1983, Hit Man was my attempt at creating a wall dodging program and it is a tough one to play.

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# 1983⁹  # game⁵¹  # graphic²⁰  # january¹  # monthly¹⁷²  # zx81²¹⁶ 

Posted Dec 16, 2012 by Steven in ZX81 Computer 2 min read

December is upon us and Thyime is the last program of the month for 2012. My how quick the year has passed. Thyime’s elements include moving, shooting, a break through wall, and a moving enemy. It does all this while remaining fast. Thyime provides a decent game to close out the year.

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# game⁵¹  # graphic²⁰  # monthly¹⁷²  # zx81²¹⁶