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  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... altervista.org/bak/Thanatos+3(USR0).TAP"]Fixed version[/URL] ... /> [LIST]
    [*]Albatrossity: Type USR0 in +3 BASIC prompt before ... [*]Tau Ceti Special Edition: Type USR0 in +3 BASIC prompt before ... /> [*]Treasure Island Dizzy: Type USR0 in +3 BASIC prompt before ...
    Alessandro Grussu Alessandro Grussu December 2012 Games
  • Tapper - standard ROM timings loader version?I've had at least two copies of Tapper over the years but the most recent one I acquired seems to be a previously unknown(?) variant that uses a stan…

    ... behave as if its in USR0 mode. Tapper was WELL before ... make the machine behave in USR0 mode or is it pretty ...
    richl richl January 2013 MIA/STP/SDP
  • PlusD mini - production startedI'm developing a PlusD clone, with some features stripped to make it very affordable. The real PlusD and German clone have an 7805 regulator, but I …

    ... (grey) with correct start to USR0 mode.
    [url]http://velesoft ...
    velesoft velesoft January 2013 Hardware
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... then reset and go into USR0 mode, then I should load ...
    Alessandro Grussu Alessandro Grussu January 2013 Brand new software
  • Treasure Island Dizzy 128k +2a modeHi all! I have a original black spectrum 128k +2a computer in my collection and quite a few games and im a big big fan of codemasters and the Dizzy …

    ... />
    "Treasure Island Dizzy: Type USR0 in +3 BASIC prompt before ...
    Ivanzx Ivanzx January 2013 Games
  • ZX games that work only in the USR0 modeExist list of ZX games that can't be loaded from 128 menu/128 editor/+3 basic ? (I need all games that need be loaded from USR 0 mode).

    ... : ZX Spectrum 128K (load in USR0 mode)[/B]

    Unfortunately ...
    Ralf Ralf February 2013 Games
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…

    "USR0 mode" refers to running the 48k ROM with 128k paging enabled as opposed to the 48k Basic menu option which boots the 48k ROM with all memory paging locked.
    guesser guesser February 2013 Games
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…

    [QUOTE=Zup;684496]
    So.. why do some games work using USR0?[/QUOTE]

    Witchcraft.
    Rebelstar without a cause Rebelstar without a cause February 2013 Games
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…

    Great game. Love it.

    No clue about the USR0, sorry (should have asked me 20 years ago!)
    ZnorXman ZnorXman February 2013 Games
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…

    USR0 mode uses bank switching using ...
    LCD LCD February 2013 Games
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…

    I do know what is USR0, and the differences between 48k ... and USR0 mode. The question was something ... mode but do work in USR0 mode?"

    I guess ...
    Zup Zup February 2013 Games
  • Switch 128k to 48k modeNot sure how to go about this using MC, in 128 basic you can type SPECTRUM to revert to 48 mode (I think), but how would I go about switching modes u…

    ... will make the computer in USR0 mode.
    nuggetreggae nuggetreggae February 2013 Development
  • Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…

    yeah after doing the USR0 or 48K routine i decided ...
    nuggetreggae nuggetreggae March 2013 Sinclair Basic
  • DIVIDE versus ZX128 ROMDivide interface use hardware mapping of extra memory on this fixed points in 48rom: #0000 - power-on/reset/rst0/software restart #0008 - syntax erro…

    ... originally only for run in USR0 mode
    - command "SPECTRUM" only ...
    velesoft velesoft March 2013 Development
  • Just a curiosity of mixing synth with samplesThis is really a proof of concept, I made for the idea of playing simultaneously two ZX Spectrum computers, where one is playing chiptune music and t…

    ... on a +3 or in usr0 mode etc etc) and trainers ...
    nuggetreggae nuggetreggae March 2013 Sinclair Miscellaneous
  • New game: Funky FungusHappy Easter folks! What's better to do during these Spring holidays than playing some new game on our Spectrums? ;-) And lo, here is... [center] [y…

    ... can be loaded also in USR0 mode. And best will add ... be under ESXDOS (support only USR0 mode in TR-DOS).
    velesoft velesoft March 2013 Brand new software
  • New game: Funky FungusHappy Easter folks! What's better to do during these Spring holidays than playing some new game on our Spectrums? ;-) And lo, here is... [center] [y…

    ... can be loaded also in USR0 mode. And best will add ... be under ESXDOS (support only USR0 mode in TR-DOS).[/QUOTE ...
    Alessandro Grussu Alessandro Grussu March 2013 Brand new software
  • Dynamite Dan II - 128KVery interesting. I have just learned of this Dynamite Dan II, hacked to play the sound through AY chip rather than the 48K speaker: [url]http://www…

    On the +2A/+3 it will only work in USR0 mode.
    Alessandro Grussu Alessandro Grussu April 2013 Games
  • Spectrum +3 Transfer games onto DiskHi, I have a Spectrum +3, and also use Spectaculator on my PC. I can load games onto my real spectrum from the Emulator by using one of the tools a…

    ... />
    The M3 works in USR0 mode, which can help with ... to a menu screen in USR0 mode, it may be possible ... to load it in USR0 mode and save a snapshot ...
    John Elliott John Elliott May 2013 Sinclair Miscellaneous
  • Varios +3(e)DOS questions?I'm converting tape games to disk, for being used in my +3e. I'm trying to convert them to standard BASIC loaders, so files could be copied using BAS…

    ... /> LD A, 10h ; 10h for USR0, 30h for 48 BASIC
    John Elliott John Elliott May 2013 Development
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... altervista.org/bak/Thanatos+3(USR0).TAP"]Fixed version[/URL] ... /> [LIST]
    [*]Albatrossity: Type USR0 in +3 BASIC prompt before ... [*]Tau Ceti Special Edition: Type USR0 in +3 BASIC prompt before ... /> [*]Treasure Island Dizzy: Type USR0 in +3 BASIC prompt before ...
    Alessandro Grussu Alessandro Grussu May 2013 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... provided a +3 BASIC to USR0 mode switcher by Busysoft. The ...
    Einar Saukas Einar Saukas May 2013 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... /> I've tried to force USR0 and 48K modes [i]after ...
    Zup Zup May 2013 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... /> I've tried to force USR0 and 48K modes [i]after ...
    Alessandro Grussu Alessandro Grussu May 2013 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... 128kB models need switch to USR0 or 48BASIC mode before loading ... patch - add automatic switching to USR0 mode.

    Here is ...
    velesoft velesoft May 2013 Games
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... any computer type. Jump to USR0 mode or to 48 basic ...
    velesoft velesoft July 2013 Announcements
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... any computer type. Jump to USR0 mode or to 48 basic ...
    Turrican Turrican July 2013 Announcements
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... any computer type. Jump to USR0 mode or to 48 basic ...
    Turrican Turrican July 2013 Announcements
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... version of DRAGONIA with automatic USR0 before loading game:
    [url ...
    velesoft velesoft July 2013 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... /other/128editor_to_usr0_automatic_switcher.rar"]Busysoft's USR0 mode patch[/URL] before the ...
    Alessandro Grussu Alessandro Grussu July 2013 Games
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Related Threads

  • ZX games that work only in the USR0 modeExist list of ZX games that can't be loaded from 128 menu/128 editor/+3 basic ?<br /> (I need all games that need be loaded from USR 0 mode).
  • Is it possible to access the +3 disk drive via m/c in USR0 mode?Is it possible to access the disk drive of the +3 via m/c +3DOS calls when running in USR0 mode?<br /> <br /> I ask because I'm having an awful lot o…
  • usr0 issue on grey +2 with DivIDEUp until today i've only used the DivIDE with my toastrack 128 and with no issues. Today I had a grey +2 on the go and if DivIDE is connected and I t…
  • Why do games work using USR0?I'm trying to get Terramex to work from disk. In the [url=http://www.worldofspectrum.org/forums/showthread.php?t=34332]thread about +2A/+3 incompatib…
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