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Search Again :: Adv Search 1000 results in 0.022s
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  • Dead or Alive by CronosoftFew years ago I found out that there are at leat 2 different versions of this game. The real cassette I have at home, which I bought in 2006 from Cro…

    ... or Alive was originally released back in 1995, but only a ... initially stored in the screen buffer and relocated to one of ...
    jonathan jonathan January 2012 Infoseek database
  • LZ77 en/decodingI've written an LZ77 en/decoding routine as I couldn't find one around for the Spectrum. Initially I'm just doing it in BASIC to get the logic right.…

    ... operation).

    A circular buffer works with modular arithmetic. You ... somewhere within a fixed size buffer. Whenever you add to ' ... makes it wrap back to zero. The linear buffer in memory wraps ... . For example, if your buffer is 128 bytes you can ...
    Alcoholics Anonymous Alcoholics Anonymous March 2012 Development
  • Exilei\'m sure this has been brought up before but couldn't find a thread in 'New Game Ideas'. Why did the Spectrum never get a port of the BBC game Exile…

    ... afternoon.

    Scrolling a buffer vertically and horizontally using unrolled ... I posted a few months back.

    The routines eat ...
    jonathan jonathan March 2012 New game ideas
  • Exilei\'m sure this has been brought up before but couldn't find a thread in 'New Game Ideas'. Why did the Spectrum never get a port of the BBC game Exile…

    ... afternoon.

    Scrolling a buffer vertically and horizontally using unrolled ... I posted a few months back.

    The routines eat ...
    ewgf ewgf March 2012 New game ideas
  • Exilei\'m sure this has been brought up before but couldn't find a thread in 'New Game Ideas'. Why did the Spectrum never get a port of the BBC game Exile…

    ... afternoon.

    Scrolling a buffer vertically and horizontally using unrolled ... I posted a few months back.

    The routines eat ...
    bobs bobs March 2012 New game ideas
  • Deathchase improvementsI have spent the last couple of months bringing out an "enhanced" version of Deathchase which I called "Deathchase 2012". Unfortunately because it us…

    ... $6B96 which saves the game back to tape and calls $04C2 ... to the "new tree" buffer (ZX printer buffer area) then yes it ...
    Jimmy Jimmy April 2012 New game ideas
  • Store and restore attribute valuesI am needing ideas on how to write a machine code routine that will store/restore (more important to restore) attribute values to the 22528 area. I …

    ... 16 byte row to the buffer
    ldi
    ... /> pop bc ;get b back for the correct number of ... move 16 bytes from the buffer to the screen
    ... de,hl ;put hl back to buffer, de back to screem
    ... pop bc ;get b back ...
    R-Tape R-Tape May 2012 Development
  • Store and restore attribute valuesI am needing ideas on how to write a machine code routine that will store/restore (more important to restore) attribute values to the 22528 area. I …

    ... (as the restore will put back the old attributes); the top ... will run into the printer buffer).

    I did assembler ...
    Battle Bunny Battle Bunny May 2012 Development
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... t waste time scrolling a buffer vertically. Simply change the ... until the buffer runs out. Then a second loop jumps back to ... the top of the buffer and carries ... back again when you erase them. Whether you use an intermediate buffer ...
    joefish joefish May 2012 Development
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... around back to the start of that line in the buffer ... HL to send you back to the start of ... />
    Of course, your buffer can then be wider than ... you're using an intermediate buffer to add sprites.
    ... passes to change the buffer address to start reading ...
    joefish joefish May 2012 Development
  • Keyboard issuesI'm getting back into programming in BASIC, but I'm finding using a PC keyboard to emulate 48k or 128k BASIC tiresome due to the mapping of keys, esp…

    ... this great advice. Reagrding the 'buffer' system, I have been using ... as I am just getting back into BASIC and I'm ...
    MattLamb MattLamb May 2012 Sinclair Basic
  • OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…

    ... spare space from the printer buffer area) will do the fix ... to finish HSL. Will report back soon.
    chev chev May 2012 Sinclair Basic
  • SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…

    ... ]

    I posted one back in February - "editing strings with ... editor but allows the input buffer to be pre-loaded with ...
    Battle Bunny Battle Bunny June 2012 Development
  • SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…

    ... Bunny;632454]I posted one back in February - "editing strings with ... ;632454]but allows the input buffer to be pre-loaded with ...
    Einar Saukas Einar Saukas June 2012 Development
  • Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…

    ... 48 basic clears the print buffer you won't be able ... restore them immediately before switching back to 128K ?

    EDIT ...
    The_Bert The_Bert July 2012 Sinclair Basic
  • Performance Analyser?Disclaimer: Im asking this question as a "non-programmer" so please forgive my ignorance if this turns out to be a daft question. During the life-sp…

    ... best. I've kinda stepped back from Speccy coding these days ... great. eg: I allocate a buffer in code, then tell the ... bytes either side of that buffer, most likely indicating an overflow ... 's emu" myself a while back but... well.. I got into ...
    evilpaul evilpaul August 2012 Development
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... 7. Instead of feeding it back into pin 8, if it ... . The standard 128 composite video buffer, i.e. three diodes, a ...
    rga24 rga24 September 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... QUOTE=mcleod_ideafix;653374] A double buffer for one line (like the ... can be plugged into the back of the Speccy). The first ... the shadow screen buffer into the output DVI buffer exactly in sync ... separate to the shadow screen buffer. (Or rather shadow screen ...
    Winston Winston September 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... can be plugged into the back of the Speccy). The first ... the shadow screen buffer into the output DVI buffer exactly in sync ... the FPGA. The shadow screen buffer is basically written to by ... separate to the shadow screen buffer. (Or rather shadow screen buffers ...
    BiNMaN BiNMaN September 2012 Hardware
  • Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …

    ... 're going to have to buffer an extra byte to guarantee ... static RAM wasn't available back in 1982. Even if fast ... circuit with an 8 bit buffer for both video and CPU ... with just one 8 bit buffer and a bunch of logic ...
    Winston Winston October 2012 Hardware
  • Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…

    ... /> push hl ;push return address back

    or a

    ld de,@buffer
    add hl,de
    Stefan Drissen Stefan Drissen November 2012 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... data from that into a buffer, then clearing the screen again ... a buffer of the data as it comes out so that back ... method can make back-references all the way back to the beginning ...
    joefish joefish November 2012 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... method can make back-references all the way back to the beginning ... refer even 32K or so back, simpler compressors (like turbo imploder ... ) refers about 2K - 4K back. for your purposes, custom LZ ... state of compresor and history buffer has to be saved.
    catmeows catmeows November 2012 Development
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... ROM doesn't get paged back in after the DivIDE ROM ... through the FPGA input/output buffer) so it seemed to run ...
    mcleod_ideafix mcleod_ideafix November 2012 Hardware
  • Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…

    ... are interpreted by the input buffer (inside the ROM chip) as ... at the input of both buffer instead of voltage at the ... the pullup, making the input buffer to see a '0'.[/QUOTE ... .

    When I get back to thinking of the strategy ...
    bverstee bverstee December 2012 Hardware
  • RAM used / corrupted by +3DOSAs I said previously, [url=http://www.worldofspectrum.org/forums/showthread.php?t=41775]I'm trying to put some games in hard disk[/url] so they can b…

    ... br />
    D=first buffer for DOS cache
    E ... like:

    ; 1st DOS buffer $28 @ $D000
    ; number ... 08 = $1000
    ; 1st RAM buffer $30 @ $E000
    ; number $ ... then DOSGET1346 still comes back with DE=$E5E5 and ...
    Battle Bunny Battle Bunny December 2012 Games
  • +3 BASIC DOS_DemoI got side-tracked while working on the Op.Wolf conversion and ended up writing this +3 DOS utility which provides most of the disk functions that mi…

    ... /> S=SET1346 b=1st DOS buffer, c=qty DOS buffers,
    d=1st RAM buffer, e=qty RAM buffers

    Now to get back to that Space Gun conversion ...
    Battle Bunny Battle Bunny January 2013 Sinclair Basic
  • A new site for an old projectThe 'Interface 1bis' project site has been moved to: [url]https://sites.google.com/site/interface1bis/[/url] In fact, it's not only a simple relocati…

    ... , but a fast 3-state buffer. See: [url]http://www.worldofspectrum ... ]

    - doesn't switch back and forth, but totally obliterates ...
    Dan Antohi Dan Antohi January 2013 Announcements
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... will transform the RCS format back into a regular screen. However ... " routine to transform RCS format back into a regular screen. The ...
    Einar Saukas Einar Saukas January 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... single pass using a 0x800 buffer (2048 bytes):

    For ... the screen content to this buffer using LDIR, then use part ... " routine[/URL] to copy back from buffer to screen while converting it ... even need the other 0x100 buffer!
    Einar Saukas Einar Saukas January 2013 Development
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Latest Posts

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  • Fixed Speccy Software. And which games remained unfixed?
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