#zxspectrumnext — Public Fediverse posts

Bizmuth 1.0.0-beta2 released. 174 changes since beta 1, 123 of them fixes: ESP networking with no extra hardware, and ASSERTs in your asm source via SLD files. Free beta.

https://twistedraven.net/news/bizmuth-1-0-0-beta2/

#ZXSpectrumNext #emulator #retrodev

Fix-It Felix Jr has appeared on the ZX Spectrum Next and it looks really good!

https://web.brid.gy/r/https://www.indieretronews.com/2026/09/fix-it-felix-jr-has-appeared-on-zx.html

zenas v0.8.1 is out

— a Z80 and Z80N macro assembler in Go that can also execute and test the code it assembles. No third-party assembler dependencies, one static binary.

Highlights:

• Closing cross-assembler compatibility gaps for Z80N: an OPT ZXNEXT source directive (0.8.0) lets a file enable Z80N itself — a source written for SNasm's own OPT ZXNEXT line now assembles unchanged — and --zxnext (0.8.1) is now recognised everywhere --next is, matching sjasmplus's own flag spelling
• Full Z80N (ZX Spectrum Next) instruction set support, cross-validated byte-for-byte against sjasmplus for every documented and undocumented form
• Built-in assemble-run-assert loop: zenas run executes assembled code in a bundled Z80/Z80N emulator core (zen80), and zenas assert checks the result — Go-test-style .EXPECT/.MATCH directives in *_test.asm files give PASS/FAIL output with no separate emulator or file round-trip needed
• Broad dialect compatibility with other assemblers' source conventions (pasmo's radix and INCLUDE forms among them)

Repo:
https://github.com/ha1tch/zenas

Download:
https://github.com/ha1tch/zenas/releases/tag/v0.8.1

#ZXSpectrum #retrocomputing #golang #Z80 #speccy #spectrum #spectrumnext #zxspectrumnext

zen80 v0.5.1 is out — the Go Z80 CPU core behind ZenZX.

Highlights:

• Full Z80N (ZX Spectrum Next) extended instruction set: all 29 opcodes, opt-in and zero-cost when off. Cross-checked against ZEsarUX and Z80N emulation (CSpect via NextZXOS) where the Next's own documentation left genuine doubt — one carry-flag behaviour turned out to contradict two separate wiki revisions
• FastMem/FastPort: an optional flat-array fast path alongside the normal Memory/IO interfaces, ~3.6x throughput on memory-heavy workloads, for callers that need to run many instructions fast (e.g. an emulator's tape-loading turbo mode)
• ULA contention hooks with within-instruction access-position tracking, measured to ~0.33% (memory) / ~0% (I/O) position-error bounds against 4.2M real instructions
• Three undocumented-behaviour fixes found auditing against real copy-protection code that deliberately probes them: BIT n,(HL)'s X/Y flags, HALT's refresh-register timing, and MEMPTR on conditional jumps/calls
• Permanent debug hooks (PC, memory writes, port reads) for building cross-emulator trace tooling without patching the core

https://github.com/ha1tch/zen80

#ZXSpectrum #z80 #retrocomputing #colang #speccy #spectrum #foss #spectrumnext #zxspectrumnext

Bizmuth 1.0.0-beta1 — my ZX Spectrum Next emulator and source-level debugger. It now runs on hg80, our own Z80/Z80N core, so the LGPL CPU library is gone, and --load starts from a cached boot state. Free beta.

https://twistedraven.net/news/bizmuth-1-0-0-beta1/

#ZXSpectrumNext #emulator #retrodev

Tiny Peter es un nanobot médico y ha sido enviado al interior del cuerpo de un alienígena enfermo para ayudarle a curarse de su enfermedad. Está disponible en https://sunteam.itch.io/tinypeter para #ZXSpectrumnext ¡Muy divertido! 😃👍🏻🕹️ #retrogaming #zxspectrum #arcade #plataformas #videojuegos

The Nexts are coming!

#ZXSpectrum #ZXSpectrumNext #Speccy #Spectrum #SpectrumNext #retrocomputing

Bizmuth 0.9.5-beta5 is out — our ZX Spectrum Next emulator + source-level debugger. Now with save/load states, much faster emulation, working DeZog (DZRP) debugging, and new SD-card tools.

https://twistedraven.net/news/bizmuth-0-9-5-beta5/

#Bizmuth #ZXSpectrumNext #Z80

Bizmuth 0.9.4-beta4 is out — our cycle-accurate ZX Spectrum Next emulator + source-level debugger. New: save/load states, re-runnable setup, faster interrupt-heavy code, and a swappable LGPL Z80 core.

https://twistedraven.net/news/bizmuth-0-9-4-beta4/

#Bizmuth #ZXSpectrumNext #Z80

Bizmuth 0.9.3-beta3 — my cycle-accurate ZX Spectrum Next emulator + debugger. New: in-app update check, ADP page-qualified breakpoints + headless mode, plus ARM64 Linux and portable Windows builds. Free beta.

https://twistedraven.net/news/bizmuth-0-9-3-beta3/

#ZXSpectrumNext #emulator #retrodev

Bizmuth 0.9.1-beta2 — my cycle-accurate ZX Spectrum Next emulator + source-level debugger. Now emulates the 16K Spectrum; the ADP debugger gains async *stopped events, mem write and step-over. Free public beta.

https://twistedraven.net/news/bizmuth-0-9-1-beta2/

#ZXSpectrumNext #emulator #retrodev

Introducing zenas: a Z80/Z80N macro assembler written in Go, now public at v0.7.5.

The difference: it runs and tests the code it assembles. One static binary — assemble, package to ZX Spectrum tape or snapshot, execute in a built-in emulator, assert on machine state, go-test style.

Encodings verified byte-for-byte against pasmo and sjasmplus across all 545 forms. Typed macro linkage, packages, build tags — with the design reasoning written down.

https://github.com/ha1tch/zenas

#ZXSpectrum #Z80 #retrocomputing #golang #foss #Speccy #Spectrum #ZXSpectrumNext #assembler #asm

Phoebus Dokos left a challenge on the KS3 blog:

"Whomever figures out what the little icons are next to the joystick/serial ports wins something"

This might be your chance! 🤣
https://www.kickstarter.com/projects/spectrumnext/zx-spectrum-next-issue-3-0/posts/4576633

#ZXSpectrumNext #SpectrumNext #ZXSpectrum
#Spectrum #speccy #retrocomputing #retrogaming

I don't think I have ever seen so many speckies together before!

ZX Spectrum Next KS3, Production Day Update 3
https://www.kickstarter.com/projects/spectrumnext/zx-spectrum-next-issue-3-0/posts/4733594

#ZXSpectrumNext #SpectrumNext #ZXSpectrum #Spectrum #speccy #retrocomputing #retrogaming

Production Time!

https://youtu.be/BbVPE27OD7U?si=jg7qUeR2nz-ffF79

#ZXSpectrum #Spectrum #speccy #retrogaming #retrocomputing #ZXSpectrumNext #SpectrumNext

Per chi volesse seguire degli aggiornamenti, c'è una pagina su Itch.io.

https://dave18.itch.io/wip-sonic-spectrum-next

#zxspectrum #zxspectrumnext #retrogaming #retrocomputing #sonic #sonicthehedgehog #videogioco #videogiochi #sega #sinclair

Sonic the Hedgehog in un port in sviluppo per ZX Spectrum Next.
Sembra promettere bene, vedremo se verrà finito.

@giochi
@computer

https://invidious.tiekoetter.com/watch?v=l-IoO92Jxyc

#zxspectrum #zxspectrumnext #retrogaming #retrocomputing #sonic #sonicthehedgehog #videogioco #videogiochi #sega #sinclair

ZX Spectrum Next implementation on a sub $30 Tang Nano 20k FPGA board.

by RetroSilicon

( via @rcl )

Impressive technical feat, fitting the Next core into a much smaller FPGA of a completely different architecture, the original Spectrum Next runs on the more powerful Xilinx FPGAs (Spartan, originally, and Artix class in KS2 and KS3. KS3 in particular will be delivering a Xilinx Artix-7 XC7A35T-2CSG324C).

All of which speaks highly of both the technical ability of RetroSilicon, and the quality and expansive vision of the SpecNext LLC implementation.

Repo:
https://github.com/RetroSilicon/NextNano

Video demo, running Saboteur:
https://www.youtube.com/watch?v=FlwklhXbSbg

Price and availability of Tang boards from AliExpress may vary depending on your location, make sure you specify yours using the buttons on the top right
https://fr.aliexpress.com/item/1005005581148230.html?gatewayAdapt=glo2fra

#SpectrumNext #Spectrum #ZXSpectrum #ZXSpectrumNext #speccy #retrocomputing #retrogaming

It's coming up, it's coming up, it's coming up...
IT'S DARE!

https://www.kickstarter.com/projects/spectrumnext/zx-spectrum-next-issue-3-0/posts/4676856?ref=activity

#ZXSpectrum #Speccy #Spectrum #ZXSpectrumNext #SpectrumNext #retrocomputing