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<1…78910111213…34>
  • Z80, and 6502, in comparisonI was wondering about how each of these compared in terms of performance. The Commodore 64 had a 6502 @ 1MHz, and graphics processor VIC which took …

    ... case if the 6502 and Z80 performed much the same per ... a bit better than the Z80.


    The BBC ...
    dmsmith dmsmith December 2018 Hardware
  • [mac os x, Fuse] Thumbnail icon of TZX, TAP and z80 files in Finder goneFor a long time I could see thumbnail previews of TZX, TAP and z80 files in Finder. I'm sure FUSE installed this nice feature years ago. Recently for…

    ... previews of TZX, TAP and z80 files in Finder. I'm ... working - I see only generic "z80 file", "TAP file" icon. Does ...
    Kuba Adamowicz Kuba Adamowicz February 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • shamazx dma 15x anyone intereted? was hoping to get ula+ full screen animations working any programmers think they could disect rtype replace screen scrolling…

    ... rtype replace screen scrolling with dma code?

    Attach Poll ...
    rogerjowett1 rogerjowett1 April 2022 Hardware
  • shamazx dma15x anyone intereted? was hoping to get ula+ full screen animations working any programmers think they could disect rtype replace screen scrolling w…

    ... rtype replace screen scrolling with dma code?

    Attach Poll ...
    rogerjowett1 rogerjowett1 April 2022 Hardware Preservation
  • shamazx dma 15x anyone intereted? was hoping to get ula+ full screen animations working any programmers think they could disect rtype replace screen scrolling…

    ... rtype replace screen scrolling with dma code?

    Attach Poll ...
    rogerjowett1 rogerjowett1 April 2022 Hardware
  • 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
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    Direct Memory Access - DMA doesn't have much to ... 's no provision for DMA on the original Z80 - I assume you ... case a newer chip with DMA abilities would be a necessity ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... make me confused. The DMA system is in the Spectrum ... , but the developers DMA have nothing to do ... into memory. THAT is DMA.
    I don't ... problems, moving away from DMA.
    Look at the ... used into the new NC100 Z80 development system.
    Oh ...
    Takashi64 Takashi64 October 2002 Sinclair Miscellaneous
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... program into memory. THAT is DMA.[/quote]

    ... strength. That is NOT DMA. DMA is where devices can ... into the new NC100 Z80 development system.[/quote]
    z80 opcodes require no translation - ... to use a newer Z80 - they have new ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... to!
    I know what DMA actually is. I didn't ... was left behind in the Z80 machines. Because of this I ... 8-bit OS written in Z80. Actually it was written in ... Basic and translated other to Z80. But you get the idea ...
    Takashi64 Takashi64 October 2002 Sinclair Miscellaneous
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... to!
    I know what DMA actually is. I didn't ... was left behind in the Z80 machines. Because of this ... Basic and translated other to Z80. But you get the ... from 0000h onwards when the Z80 is powered up - that ... any other connected to the Z80 - it doesn't care ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…

    ... or DataGear (Both have a DMA chip), and viewer from 8BC ... though :) at least you undertand Z80 and how spectrum functions as ... /> I understand a lot of Z80, but I?m not a ...
    LCD LCD March 2003 Sinclair Miscellaneous
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... wrote:
    Considering the plain Z80, RET and RETI works exactly ... PIO, but also includes the DMA (direct memory access), SIO (serial ... modern MB02 interface contains a DMA chip. I would be surprised ...
    Alcoholics Anonymous Alcoholics Anonymous July 2004 Development
  • AmericaI've been wondering, was the Spectrum released in America? Was it popular? Are there Spectrum games that were made in America? There must be a few A…

    ... to be mapped into the z80 memory space.

    Aside ... also in place to allow DMA to work properly.

    Alcoholics Anonymous Alcoholics Anonymous August 2004 Games
  • Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…

    ... times faster than a 1MHz Z80 and four times faster than ... an equally clocked Z80 (if one ever could exist ... , FIFO serial ports, parallel ports, DMA controller, Ethernet, matrix math, and ...
    Sparky Sparky October 2004 Sinclair Miscellaneous
  • InterruptsCan someone help with providing some info or a link about IM 2. I know I need to create a vector table and want to store this as high in memory as po…

    ... read and CALLed by the Z80.

    Effectively, ... fact that z80 im2 peripherals (the ctc, pio, dma, sio ... the peripheral id the z80 is expecting. In ... that case, the z80 reads whatever is floating ... fe. This means that the z80 will *always* call address ...
    Alcoholics Anonymous Alcoholics Anonymous February 2005 Development
<1…78910111213…34>

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