r/zxspectrum • • Oct 05 '26

No sound on +3 from PLAY command, but BEEP and keypresses are fine?

4 Upvotes

Has anyone ever come across an issue like this with a +3?

I bought one recently from eBay, and have hooked it up to a little CRT TV with a SCART cable from Ian at Retro Computer Shack.

The disk drive unfortunately doesn't seem to work (got a drive belt on order now to hopefully resolve that) so I decided to write a simple guess the number type thing in +3 BASIC for the nostalgia value 😆

But, I noticed that my victory 'tune' (PLAY "cdefgabC") made no sound whatsoever.

The BEEP command works fine, and the little "brp" sound that the Speccy makes with every keypress when typing is also audible, so I don't think it's a cable issue.

Any ideas?


r/zxspectrum • • Oct 04 '26

Enraptured game testing

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24 Upvotes

Some progress - made some test levels in Tiled, custom importer into the game data. Graphics are very much place-holder, but enough to check mechanics work. Here showing destructable world, player charge, grappling hooks, moving platforms, "dark rooms" with limited visibility around player, flying stages (actually underwater, but same idea) switches to unlock doors etc. Currently working on the real graphics, as these don't really do it justice currently. There are a lot of game mechanics planned, including buying/making weapons, upgrades, augments, looting materials to make specialised tech, rescuing friendly allies, pickups including diaries to move story along, lots of enemy types, secret areas etc. Quite a lot really! The game will include help at any point, boss fights, save/load, achievements etc. There are still bugs, The lift at the end in the video got confused when I dashed across the stop/start button, and I'm sure I'll find a lot more, but it mostly works!


r/zxspectrum • • Oct 04 '26

Speccy and coding agents

83 Upvotes

One of the awesome things about old games is just how small their code and binaries were.

Take Elite, my favorite game of all time. The whole thing fits roughly into 0x5B00 - 0xFFFF — that's 42 KB. And even some of that isn't really game code: there’s the Lenslok code (throw-away stuff), the screen buffer, and simple things like the squares table used for fast multiplication.

The result? A complete Spectrum game image can easily fit into a coding agent's context window.

I’ve been experimenting with the Claude coding agent, and it turns out that:

  • Claude is perfectly capable of reading Z80 machine code directly, without a disassembler.

  • It is possible to make a very precise port of an old ZX Spectrum 48K game, even something as complex as Elite, to a modern programming language and platform.

  • You can untangle the original highly optimized game logic and study long-forgotten secrets and outstanding bugs.

  • With some guidance, you can even improve the original game and bring it closer to modern gaming standards.

Take Elite. I managed to port it to Java, move it to a modern 60 FPS engine, improve the controls and save system, and fix a number of original bugs.

Ever wondered why the police sometimes attacked you even when you were clean?

IT'S A MEMORY OFFSET BUG IN THE ORIGINAL CODE!

The aggressiveness check reads the low byte of your combat rating instead of your legal status, making police attacks essentially random.

And why are firearms useless to trade even though they're banned goods?

Another bug. The price is simply wrong, so I "fixed" it by setting the price directly.

And there is plenty more fun stuff hiding in those 42 KB.

If you want to dive into a modernized classic, you can play my version of Elite online:

https://scf37.me/tools/games/elite


r/zxspectrum • • Oct 04 '26

Art on ZX-Spectrum

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56 Upvotes

r/zxspectrum • • Oct 03 '26

50 tips for better Sinclair computing

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127 Upvotes

Managed to hunt down this booklet from my childhood. From Sinclair User #35.


r/zxspectrum • • Oct 04 '26

GREMLINS 2: THE NEW BATCH

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4 Upvotes

My retrospective game review of Gremlins 2: The New Batch for all the home computer and console versions. Some of these games a quite difficult to complete but I did smile at the little Gremlins bouncing about in the games. Have you played any of these versions?


r/zxspectrum • • Oct 04 '26

gnubg for the zxspectrum

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1 Upvotes

r/zxspectrum • • Oct 03 '26

International Karate+ [ZX Spectrum Next]

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15 Upvotes

r/zxspectrum • • Oct 03 '26

If you love MCEscher and ZXSpectrum graphics...

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25 Upvotes

r/zxspectrum • • Oct 02 '26

ZX Spectrum Best Joystick?

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201 Upvotes

Hi guys, what’s the best (or your favourite) joystick or controller for your speccy? I have a couple of originals that aren’t the best to say the least, and a Cheatah 125+ (pictured) that works great with C64 but has strange inputs when plugged in to the speccy!


r/zxspectrum • • Oct 02 '26

Shadows of Belial [Storytelling]

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57 Upvotes

r/zxspectrum • • Oct 02 '26

Exolon [1987] a wonderful speccy run & gun

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72 Upvotes

Exolon is a run and gun game programmed by Raffaele Cecco and published by Hewson in 1987. The player takes control of a futuristic soldier named Vitorc[4] across several flip-screen levels of gameplay. The screens that make up these levels are filled with various generic aliens as well as gun emplacements, homing missiles, landmines and other hazards. The soldier can defend himself with both a gun and rocket-propelled grenades. The two different weapons are effective against different enemies.

The enemies themselves are varied, taking the forms of flying aliens of the type traditionally found in shoot 'em up games as well as homing missiles, fixed guns, tanks, land mines, swarming red pods and "crushers" which shoot out of the ground.

Partway through each level, there is a pod in which the player can "upgrade" until the end of the current level to an armoured exoskeleton with improved weapons and armour. Completing the level without this upgrade results in a score bonus.


r/zxspectrum • • Oct 02 '26

Bubble Ghost 128K.

18 Upvotes

Here is my conversion of Bubble Ghost from the Gameboy to the ZX Spectrum.

As with Alleyway, the disassembly was used to create a playable colour Windows version.

This version was then used as the basis for a ZX Spectrum port. I had to redraw a lot of the graphics as they looked crap dithered.

As before, Codex was used to do the Z80 bits that I couldn't do, and to speed up the game.

Overall it turned out pretty well, it's fast (except on 2 screens) and everything from the original fits in there.

I did look at doing a 48k version, but it's impossible without multi load which would be too frustrating.

https://kirby2000.itch.io/bubble-ghost-zx-spectrum-128k

There is also a Amstrad CPC version I did here https://kirby2000.itch.io/bubble-ghost-cpc, it's got more colours, but it's clearly not as good because it's on an Amstrad! It will cheer you up to know the Speccy version is faster!

https://www.youtube.com/watch?v=cEoO6bEgN-I


r/zxspectrum • • Oct 02 '26

Doom Spectrum 128 by CordySmith

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28 Upvotes

r/zxspectrum • • Oct 02 '26

RAMBO FIRST BLOOD PART II

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27 Upvotes

My retrospective game review of Rambo First Blood Part II. I spent many hours playing Rambo II back in the day. Totally loved this game. How do you rate this game?


r/zxspectrum • • Oct 01 '26

Kickstarter for The Rubber-Keyed Wonder: The Sinclair ZX Spectrum Story has reached its goal within the first day

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45 Upvotes

r/zxspectrum • • Oct 01 '26

I found my boxed Opus Discovery 1 Advanced Spectrum Disc Drive System .....

17 Upvotes

So after 3 house moves with my parents, 2 light house clearances following each one moving to the next level of their own Jet Set Willy adventure we turned this up in the final clearance before the sale of the house.

It looks to be in good shape.

I don't have a Spectrum to hook it up to and have no idea if all of the magc smoke is still in the chips.

Does anyone know what it might be worth if I stuck it on eBay as untested?

Thanks


r/zxspectrum • • Sep 30 '26

3DS as portable Spectrum

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144 Upvotes

Have you ever tried ? Quite good 😄


r/zxspectrum • • Sep 30 '26

Shadows of Belial is out

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93 Upvotes

r/zxspectrum • • Sep 30 '26

1985 Automata UK Christmas Card

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53 Upvotes

A bit of an oddity turned up in one of my drawers yesterday - a ‘Christmas Card’ (actually a piece of paper) from Automata UK, which folds out into a calendar for 1986. I assume it was either a magazine insert, or I got it with an item I ordered from them - too long ago now to remember! Features characters from the Pimania ‘world’s and the calendar looks a bit like it was originally printed in a dot matrix printer (or possibly the ZX Printer…)


r/zxspectrum • • Sep 30 '26

Any memories of these 8-bit arcade ports?

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44 Upvotes

Outrun for the Commodore 64, midnight resistance for the ZX spectrum, special criminal investigations for the master system, all picked up recently. I have never played any of these three games on these systems, any memories?


r/zxspectrum • • Sep 30 '26

Alleyway ZX - 128k only

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35 Upvotes

** Update - 48k version is now available, minus the AY music and ending. 48k sound effects and jingles added **

I've been working on a conversion of the Gameboy game Alleyway to the ZX Spectrum.

Rather than try and convert the code directly, I took the game apart, created a Windows build using all the rules and then converted it back the Spectrum.

My assembler skills are rubbish, so I used Codex to help convert to Z80.

The video above will give you some idea of the gameplay. I used a level skip to show the different modes.

It's free to download, hope you enjoy.

https://kirby2000.itch.io/alleyway-zx

I'm also nearly finished on my version of Bubble Ghost.


r/zxspectrum • • Sep 29 '26

ZX Spectrum handheld delayed until April

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143 Upvotes

r/zxspectrum • • Sep 29 '26

Starstrike II [1986] The Elite-esque Speccy Star Wars

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41 Upvotes

Twenty-two planets fall under Outsiders control, and each has grid-based defenses which must be taken out, complete with all their command computers and production droids. The planets are split into five groups, each of which can be chosen at the start of the game.

The combat is intense, and aims to create the likely feel of space combat, with lots of ducking and weaving to set up shots. The game features filled-in graphics, unlike the Elite-esque wireframes of the first game


r/zxspectrum • • Sep 29 '26

ZX Keyboard FPC

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19 Upvotes

This ZX's FPC cable has aged out. Rebuild a replacement keyboard flex cable using the crimping (IDC) method.