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<1…12131415161718…34>
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... ,

    The command INC SP (increment stack pointer):
    - Does ... command increment the value in SP by 1 or 2 (I ... PUSH and POP alter the SP by 2).

    Secondly ... -bit register (i.e. PC, SP, IX, IY) when we use ...
    MadDoc MadDoc September 2004 Development
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... wrote:
    The command INC SP (increment stack pointer):
    - Does ... command increment the value in SP by 1 or 2 (I ... /> [/quote]

    INC SP increments SP by 1.
    PUSH and ... -bit register (i.e. PC, SP, IX, IY) when we use ...
    Woody Woody September 2004 Development
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... br />
    The command INC SP (increment stack pointer):
    - Does ... command increment the value in SP by 1 or 2 ( ... PUSH and POP alter the SP by 2).
    [/quote]< ...
    1. You're treating SP as if it were any ... bit register (i.e. PC, SP, IX, IY) when we ...
    Dunny Dunny September 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ...

    DI ; because of SP, dont let this get messed ... />

    LD (restorec+1), SP

    LD HL,BACKBUFFER ... />

    restorec
    LD SP, 0000h

    EI
    robpearmain robpearmain September 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... /> [code]
    LD (restorec+1), SP

    LD HL,BACKBUFFER ...

    go2:
    LD SP,HL
    POP AF
    POP BC
    LD SP,HL
    PUSH BC
    Alcoholics Anonymous Alcoholics Anonymous September 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... EXX

    LD SP,HL
    POP AF

    LD SP,HL
    POP AF

    LD SP,HL
    POP AF
    robpearmain robpearmain September 2004 Development
  • On 48k, can I copy 4k before next screen updateFollowing on from my thread at [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=6423&forum=11"]http://www.worldofspectrum.org/forums/v…

    ... stack abuse:
    [code] LD SP,8000
    POP AF
    LD SP,4010
    PUSH HL
    gasman gasman September 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... INC H

    LD SP,HL
    POP AF

    LD SP,HL
    POP AF

    LD SP,HL
    POP AF

    LD SP,HL
    POP AF
    robpearmain robpearmain September 2004 Development
  • On 48k, can I copy 4k before next screen updateFollowing on from my thread at [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=6423&forum=11"]http://www.worldofspectrum.org/forums/v…

    ... -copy code with the "ld sp,nn". This way you will ...
    Alcoholics Anonymous Alcoholics Anonymous September 2004 Development
  • Saving games today on a real speccyOne thing I can't do on a real speccy is save games, or programs in general. My MD player doesn't have a mic minijack socket, and it's not really app…

    Yeah well that seems like the only option, but I wanted something more portable - also, I've run out of plug sockets in my 4-in-1 extension with all the other garbage like digiboxes etc in there.
    Spector Spector September 2004 Sinclair Miscellaneous
  • TZXs speed loadingIs it possible to write a program that will play back tzx files at double speed, the way that TAPER can play back z80 files at 3000 baud? The Z802TZX…

    ... can make a .slt (.z80 extension) of all the levels, but ...
    Fred Fred September 2004 Sinclair Miscellaneous
  • Screen$Is there a quick way to get pictures off a PC e.g. from MS Paint, onto the spectrum without having to type in each individual pixel before saving the…

    ...
    [/quote]

    In extension to the above just as ...
    cyborg cyborg October 2004 Sinclair Miscellaneous
  • How can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up. In Assembly Language I want to do the following: I have 1 line of text …

    ... /> Hence you could try changing SP to point to the screen ... the whole lot back move SP to where you left off ... part of the screen - put SP to point to the rightmost ...
    cyborg cyborg October 2004 Development
  • Most popular new features? I know some people like a spectrum to be emulated as authentically as possible, while others like myself like features which improve the gfx, sound,…

    The logical extension of your system, smogit, is ...
    Dunny Dunny October 2004 Emulators
  • Sprite Graphics TutorialHi everyone, Would like some feedback on the following: I am thinking of writing a Sprite Graphics Tutorial, ie. how to best program and implement …

    ... rows using fast push/pop sp functionality for transfer
    2 ...
    robpearmain robpearmain October 2004 Development
  • Professional SoccerI've a problem with this game! When i save a game the message is "Saving Error"!!!! Why???

    ... enter a filename with .tzx extension. Next, from the Recording menu ...
    darkman darkman October 2004 Games
  • Manic miner (yes MORE!!!!)you can also do the manic miner cheat from the retro gamer your sinclair 94 on both the css and jils 3 screen april fool versions of the game too, ji…

    ... code is TYPEWRITER -- and the SP version's code has been ...
    robert@fm robert@fm October 2004 Games
  • You want to read this. Oh yes you do.1) Go to [url="http://www.livepublishing.co.uk/retro/retro9.shtml"]http://www.livepublishing.co.uk/retro/retro9.shtml[/url] 2) Read to the very bott…

    ... different 'groups' its very cliquey (sp) and its very difficult to ...
    psj3809 psj3809 October 2004 Sinclair Miscellaneous
  • RFC: Sinclair Extended BASICSE Basic is no longer being developed.

    Surely you could say the same thing about practically any other extension to Sinclair BASIC though?
    gasman gasman November 2004 Sinclair Basic
  • Announce: EmuZWin 2.5 Release 2.2 Post-FinalEmuZWin Version 2.5 Release 2.2 post-FINAL (16-Oct-2004): [-] A small pause added between TAP blocks while loading tape from .TAP image (otherwise s…

    ... I add the full filename extension myself ie. 'name.sna' in ...
    Mr. Anonymous Mr. Anonymous November 2004 Emulators
  • Vanished without a trace.Hi everyone, I've just noticed that ENERGY4UK's posts have been deleted in their entirety. That's great. Hopefully our beloved administrator will co…

    ... use to buy a penis extension kit that I've got ...
    rich_chandler rich_chandler November 2004 Sinclair Miscellaneous
  • Vanished without a trace.Hi everyone, I've just noticed that ENERGY4UK's posts have been deleted in their entirety. That's great. Hopefully our beloved administrator will co…

    ... use to buy a penis extension kit that I've got ...
    Alessandro Tommasi Alessandro Tommasi November 2004 Sinclair Miscellaneous
  • I'm a newbie with SPIN and can't load SNA /Z80 filesGuys I need help... I'm running SPIN on XP system but when I load a game using file Load snapshot and use a game ( ihave a Speccy cd from 97 with lot…

    ... window - a file with the extension .SNA or .Z80. Click on ...
    Alessandro Grussu Alessandro Grussu November 2004 Emulators
  • Spectrum 128K only games (`nd TR-DOS)Apart from Where Time Stood Still what other games were 128K only, as opposed to merely 128K versions of 48K games whereby all levels were loaded and…

    ... was n't just an extension of an existing 48k game ...
    dave_beer_uk dave_beer_uk November 2004 Sinclair Miscellaneous
  • First speccy game you ever ever played..Just having a play on Jet-Pac (on my +2 I hasten to add as I would never play a denied game on an emulator...no sireee ;) ) and suddenly realised tha…

    ... /> First game I bought... Transilvanian (sp?) Tower - but the second I ...
    DavidB DavidB November 2004 Games
  • OT: XP Service Pack 2 slightly annoying thingIs anybody else bugged by a little yellow shield with ! on it in the notification area of the task bar? Its to do with automatic updates and it alwa…

    Try uninstalling and re-installing the SP (if possible).
    Arjun Arjun November 2004 Sinclair Miscellaneous
  • New mapsMy own maps: Tarzan [url="http://zx-maps.wz.cz/map.php?id=Tarzan"]http://zx-maps.wz.cz/map.php?id=Tarzan[/url] Space Rider Jet Pack Co. [url="ht…

    Armando, please repair the link for downloading of Cybernoid 2 at your site. The ZIP extension is missing there ;).
    Pavero Pavero November 2004 Games
  • OT: XP Service Pack 2 slightly annoying thingIs anybody else bugged by a little yellow shield with ! on it in the notification area of the task bar? Its to do with automatic updates and it alwa…

    ... uninstalling and re-installing the SP (if possible).
    [/quote]
    SnazzyParrot SnazzyParrot November 2004 Sinclair Miscellaneous
  • RFC: Sinclair Extended BASICSE Basic is no longer being developed.

    ... thing about practically any other extension to Sinclair BASIC though?
    Sparky Sparky December 2004 Sinclair Basic
<1…12131415161718…34>

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