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  • ZEsarUX stable 7.2Hi! I have uploaded a new stable ZEsarUX version 7.2! You must go to the Releases section on the GitHub project to download It, as usual: htt…

    ... help windows

    Added Z80 assembler
    Added setting to ... (in my machine) when only ULA and/or Tiles enabled
    chernandezba chernandezba April 2019 Emulators
  • New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…

    ... utility currently utilises the popular z80 format (v1, v2 or v3 ... registers as defined in the z80 snapshot. You can even add ... , which is much better than z80 compression but it could be ...
    TomD TomD May 2019 Development
  • Spectrum and Z80 emulators with Python APIHello everybody, It may be the right time to create a topic for these two emulators. They are not at the initial release point yet, but might be w…

    ...
    * https://github.com/kosarev/z80

    As of today ... part is capable of running .z80 and .rzx files. It is ... next step was getting a Z80 emulator that is flexible enough ...
    kosarev kosarev May 2019 Emulators
  • how do i make a character rotate in very small degrees?so i would take the letter a and rotate it degree by degree until it has gone round 360 degrees. only 8x8 pixels is necessary. machine code or basic …

    ... it has gone round 360 degrees. only 8x8 pixels is necessary ...
    digital digital September 2019 Development
  • AdvancedAdvertisment for old-games.zilog-z80-spectrum-We transformn z80gme into funny-videos.More sinus and cosine on large wide and low resolutions.Do you like these movies? [url="https://youtu.be/MJTR…

    ... /MJTRDgdpSUU?t=50"]Syntax tap1989 z80[/url]
    [url="https://youtu ... /c7r_eQl9drI"]Relax yourBrain with Chronos.z80[/url]
    [url="https://youtu ...
    d2010 d2010 September 2019 Announcements
  • How do emulators make code appears as running at 3.5Mhz?Decent Z80 emulators on github return t-states after executing an instruction, giving you the ability to emulate Speccy relatively well. But there ar…

    Decent Z80 emulators on github return t- ... 23 t-states), isn't ULA painting during the instruction too ...
    tstih tstih October 2019 Development
  • lcc z80Reading through Hansen and Frasier's "A Retargetable C Compiler: Design and Implementation" ( plenty of time on public transport ) about the lcc comp…

    ... the GameBoy crowd created a Z80 back end for it.
    tstih tstih October 2019 Development
  • ZEsarUX Beta 8.1Hi! I have uploaded a new ZEsarUX 8.1 BETA version. You can download compiled versions for Windows, Mac, and the source code from: https://gith…

    ... x,y on ula layer
    -optimized ula,lores render routines ... and applies to .sna and .z80
    Improved curses driver: now ... resolution
    Improved accurate Z80 timing: IM mode 0 is ... Fixed loading and saving +3 .z80 snapshots
    Fixed placing menu ...
    chernandezba chernandezba November 2019 Emulators
  • ZEsarUX 8.1 stableHi! I've uploaded a new ZEsarUX 8.1 stable version. Go to the github released webpage to download it: https://github.com/chernandezba/zesaru…

    ... official SD images
    -optimized ula,lores render routines: 2% less ... -added scroll x,y on ula layer
    -added 1-bit ... /> Fixed loading and saving +3 .z80 snapshots
    Fixed placing menu ... /> -fixed "bit 7 = Disable ULA output (soft reset = 0)" on ...
    chernandezba chernandezba February 2020 Emulators
  • Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![quote]Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![/quote] Err, why? If you are trying to use an interfa…

    ... line of the Z80 CPU is failing, the Z80 CPU must be ... or expansion that needs a Z80 MPU with a working /M1 ...
    1024MAK 1024MAK March 2020 Hardware
  • Wanted: Reichswald by MW Gamesworld .tap/.z80Hi all, I'm looking for a tap/z80 file of MW Gamesworld's Reichswald for a personal project I want to undertake. I'm sure that there's a copy out th…

    Hi all,
    I'm looking for a tap/z80 file of MW Gamesworld's Reichswald for a personal project I want to undertake. I'm sure that there's a copy out there somewhere. I'd be grateful if someone would forward it to me.

    Cheers,
    J.
    LevelUp LevelUp June 2020 Wanted
  • Save 48k SNA from 128k Z80 snapshot?I have been doing RZX recordings of text-based adventure games. In the case of games made with GAC (Graphic Adventure Creator), where a map and solut…

    ... are only available as 128k Z80 snapshots, which prevents me from ...
    equinox equinox June 2020 Emulators
  • uMIA: Z80 Analyst - Sesomsoft[b]Full Title:[/b] Z80 Analyst [b]Also known as:[/b] [b]Year:[/b] 1985 (Loading screen) / 1986 (Tape label) [b]Company:[/b] Sesomsoft (Herbert Ba…

    [b]Full Title:[/b] Z80 Analyst
    [b]Also known ... ://www.dropbox.com/s/kcm5egyaz8q9pvg/Z80%20Analyst.zip?dl=0
    Frankie Frankie August 2020 MIA/STP/SDP
  • 48k spectrum pausing the clockI had a spectrum 3b motherboard donated to me with no case. So i have decided to put it in a custom case with built in kempston port etc. I also …

    ... as it goes to the Z80 and cut the trace. I ... on one side to the ULA and the other side is ... (in the same way the ULA does AFAIK). The switch sometimes ...
    gazj82 gazj82 September 2020 Hardware
  • New Utility Z80onMDR - Transfer Z80 snapshot to Microdrive CartridgesWith the growing popularity of the excellent vDrive [url]https://vdrivezx.com/vdrivezx/[/url] I've adapted one of my utilities to create Microdrive …

    ... /> | Usage: Z80onMDR [global options] snapshot.z80 [snapshot settings]
    |
    | [ ... activated if more than one z80 snapshot specified, example:
    | ... Z80onMDR snapshot1.z80 -s screen1.scr snapshot2.z80 Games01
    | which ...
    TomD TomD September 2020 Brand new software
  • The ZX Spectrum ULA bookFound a copy of the ZX Spectrum ULA book by Chris Smith that I've never read. This is a new book that was given to me years ago and I've never got ro…

    ... copy of the ZX Spectrum ULA book by Chris Smith that ...
    Mr Millside Mr Millside October 2020 Sales
  • zx spectrum ULA upgradei have a issue 2 zx spectrum 16k which i upgraded to 48k .. i believe the ULA is faulty (ULA5C112E-2) .. seems intermittent i know a later one can be…

    i have a issue 2 zx spectrum 16k which i upgraded to 48k .. i believe the ULA is faulty (ULA5C112E-2) .. seems intermittent i know a later one can be used but should some resistor values be changed to match it ?
    thanks mark ..
    mark8bit mark8bit January 2021 Hardware
  • Tutorial - full game from scratch in z80 assemblyI wrote a game from scratch to release in z80 assembly and wrote it down in tutorial form. Target is basically 48k speccy with the AY chip, or 128k s…

    ... from scratch to release in z80 assembly and wrote it down ... at http://iki.fi/sol/z80
    Sol_HSA Sol_HSA May 2021 Development
  • specie external keyboard - revision one -[img]https://photos.app.goo.gl/pqeYpXnLqTwYkLvKA[/img] revision one of my external keyboard ... wow it actually worked after a little bit of crash…

    ... to send the signal to Z80. ???. thinking i may have to ... read .. trying to read the ULA book by chris smith .. very ...
    mark8bit mark8bit August 2021 Hardware
  • boot fail .. bad address lines A7,A12,A13anybody have any ideas what could be wrong with this specie issue 3B .. work done : removed rom, upper ram & logic put lower ram multiplexers in sock…

    ... , full recap, fitted switching regulator, z80 in socket (i may have ... ) tried different CPU's & ULA's. fitted lower ram module ...
    mark8bit mark8bit August 2021 Hardware
  • Spectrumpedia revised and extended edition. Suggestions about possible new contentFor the 40th anniversary of the first launch of the Spectrum, I am going to revise the Spectrumpedia. Feedback was very positive, although the fact t…

    ... /> Matranet (defunct)

    [i]Z80 Assembly cross-compilers[/i]
    Smith, Chris, [i]ZX Spectrum ULA, The: How To Design A ...
    Alessandro Grussu Alessandro Grussu October 2021 Sinclair Miscellaneous
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ?
    i wonder if anybody has done any before & after heat tests ?
    mark8bit mark8bit October 2021 Hardware
  • Interface 1 ULAIs there a technical description of the functionality of the Interface 1 ULA, similar to the "The ZX Spectrum ULA" book? Specifically, what is the…

    ... functionality of the Interface 1 ULA, similar to the "The ZX ... Spectrum ULA" book?

    Specifically, what ... the ROMEN lines of the ULA? Superficially, ROMCS feeds into the ...
    Jonathan Harston Jonathan Harston December 2021 Hardware
  • Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…

    ... . The ULA can be seen below them, and the Z80 to the ...
    cj7hawk cj7hawk December 2021 Hardware
  • How do you publish your Z80 code online?I'm starting a blog about my pet project. One of the requirements is to publish explanatory Z80 code. What tools do you use for syntax highlighting? …

    ... requirements is to publish explanatory Z80 code. What tools do you ... that I can feed raw Z80 code with and it does ...
    tstih tstih December 2021 Development
  • Is it possible to make the Z80 execute a bizarre instruction?What happens when it gets an unrecognised instruction OP Code, I mean something following a #ED that isn't one of the undocumented instructions eithe…

    ... question can one fry a Z80 say by some sort of ...
    dmsmith dmsmith March 2022 Development
  • New discovery on Z80 interrupts.This is to announce the discovery of a new, hitherto unknown, behavior of the RETI and RETN instructions. As everyone knows, the maskable interrup…

    ... can be tested on Visual Z80 Remix: https://floooh.github.io ...
    rich_chandler rich_chandler April 2022 Emulators
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Latest Posts

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  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
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    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on April 22
  • New video about S-video modification on Issue two 48K Spectrum.
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