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<1234567…34>
  • Challenge: Make a Speccy version of "Leisure Suit Larry 1"and put it on this site as a rom c'mon be nice!

    ... kB, leaving the rest of memory for code and text.

    And ...
    Ralf Ralf August 2010 Development
  • Challenge: Make a Speccy version of "Leisure Suit Larry 1"and put it on this site as a rom c'mon be nice!

    ... will some day be converted for the spectrum.[/QUOTE]

    memory for code and text.

    And ...
    zxbruno zxbruno August 2010 Development
  • Paging memoryI've been thinking about a possibility of paging blocks of memory to and from disk. Imagine dividing usable 32KB of Speccys RAM (why do they call it …

    ... single line of working code. devil is in details ... use that part of memory for code. Therefore it is not ... that space is useless for code unless you are willing ... a simple technical concept for paging to discuss. ... humor, not the topic for the debate and definitely ...
    tstih tstih October 2011 Development
  • Paging memoryI've been thinking about a possibility of paging blocks of memory to and from disk. Imagine dividing usable 32KB of Speccys RAM (why do they call it …

    ... use that part of memory for code. Therefore it is not ... that space is useless for code unless you are willing ... a simple technical concept for paging to discuss. And ... humor, not the topic for the debate and definitely ... not the right forum for the topic, will reopen ...
    Paddy Coleman Paddy Coleman October 2011 Development
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... ROM and unlike a tape for a 16k Spectrum, you do ... a large chunk of the memory for code. Yes, of course the screen ... with a full 16k of code in ROM, that is not ...
    1024MAK 1024MAK June 2016 Hardware
  • Two different versions of Bruce Lee?There's a possible MIA here, I think. I sat down at lunchtime to play a bit of Bruce Lee and discovered that the version I'd downloaded from WOS (th…

    ... , but it looks too complicated for me.[/quote]

    ... conversion utilities will use screen memory for code execution, so having the SCREEN ... Just a couple of notes for the snapshot and TZX

    For the TZX just do LOAD "" CODE, and then INK ...
    jp jp April 2019 Games
  • Max RAM for ZX Spectrum gamesHow much RAM can be used for single level/whole game? On tape writing.

    ... chips. One set provides the memory for the screen, and hence ... use any of the ROM code, all the RAM is ... want to use the screen memory for code, as visually it’s ... use some of the ROM code, then the BASIC system ... a little bit for a bit of BASIC code will need ...
    1024MAK 1024MAK October 2022 Development
  • Max RAM for ZX Spectrum gamesHow much RAM can be used for single level/whole game? On tape writing.

    ... use any of the ROM code, all the RAM is ... want to use the screen memory for code, as visually it’s ... also needs a small area for its stack.[/quote]
    ... on how to manage your memory when using the stack ... how you intend to use memory anyway.

    You ...
    deusexmachina deusexmachina October 2022 Development
  • LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding. I think that there might be more of these routines out there (where-ever-u-r). Isn…

    ... to collect these pieces of code somewhere ??

    I ... emulator and to decide which code had to be emulated I ... (#8300-#83FF)

    Total memory for table 1K. Minimum required = 512 ... br /> Decision made from fetch code to start emulating : 36 T ...
    Dr BEEP Dr BEEP October 2001 Sinclair Miscellaneous
  • Fuse for Mac OS X 0.8.0-pre2A new public preview of the next version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/pr…

    ... /> [*]Much improved screen rendering code
    [*]Loader improvements: ... br /> [*]Add a simple code profiler.
    [*]New PALTV ... .
    [*]Spotlight importer for emulator files (TZX, SZX ...
    [*]Don't leak memory for tape_buf.
    [*]Don't ...
    Fred Fred March 2007 Emulators
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... easy. 1MB external memory for SAM COUPE enable also memory paging in high ... this is bits on 1MB memory for SAM COUPE on port 129 ... D0-D2.
    For example this is original code:
    LD BC ... /> And we can replace this code with:
    AND 7
    velesoft velesoft April 2010 Games
  • Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…

    ... /> here is the code so far:
    [CODE]
    org 0
    CODE 1010
    SRL B ;ROTATE ... /> JP MENU ;SAVE COMPLETE
    [/CODE]

    Port 1 is ... controller (to save to I2C memory for removable storage)
    Port 6 ...
    Robin Robin August 2011 Announcements
  • How much memory on sprites, maps etc.I've been tinkering with shifting & pre-shifting sprites recently, but as I haven't had that much experience with Z80 assembly I sometimes find it ha…

    ... too much" as far as memory allocation is concerned.

    - rest of the code - 18KB (45%)

    I ... types tend to pre-allocate memory for different aspects of a game ...
    Morkin Morkin September 2012 Development
  • Vote for the Timesplitters (if you like great games!)Since it's looking less and less likely that we're going to see a new Timesplitters game ([URL="http://www.edge-online.com/news/free-radical-execs-sl…

    ... signatures, but they're hoping for 300,000, so please sign ... three versions of each game (for the XBox, PS2, and Gamecube ... three consoles, so they wrote for the lowest memory pool (the PS2). With ...
    ewgf ewgf November 2012 Chit chat
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... poke a few locations of memory. For reasions I cant remember ... popular assembly/machine code books for the specy avaliable for free on ... app/game in assembly/machine code for the specy (with a ... />
    This is the code for the HEX "editor"/program loader ...
    wibble wibble August 2013 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... must have enough available memory for four AI player structures ... by score, highest first
    [/code]

    The "g_players ... lands in highest to lowest score order, presumably to ... module.

    [code]
    extern void pyr_PlayerInit(struct ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • Multi-tasking OS on the Spectrum?Do you think it is possible to build a multi-tasking operating system on the Spectrum? That is, most important the ability to have several task run…

    ... honest, since the only code that needs to know about ... of crashes though, without protected memory :-) And when you load ... /> You could make "sorta" protected memory for a Z80 computer - have all ... pageable part of the memory map is the lowest 16K (without doing ...
    Winston Winston November 2007 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... 2.[/CODE]"Safety offset" is key. That says that for forward ... of the unpacked file. For reverse decompression all the counters ... at least 2 below the lowest address byte of the ... operation with 0x8002 bytes of memory (+unpacker code and table).

    GoingDigital GoingDigital September 2013 Development
  • c compiler benchmarkingI am going to have access to a number of commercial z80 compilers for a time for benchmarking, namely Hitech C v750 MSDOS (abandoned when Hitech was …

    ... global scope), obstack or block memory allocation.

    ... If you have any suggestions for code fragments, I'm all ears ... able to trawl that for common game code.

    [ ... set of programs compiled for cpm (lowest common denominator) to compare ...
    Alcoholics Anonymous Alcoholics Anonymous March 2017 Sinclair Miscellaneous
  • Speccy-Player 0.2 releasedJust thought I'd mention that Speccy-Player (the AY music player for a Real, Physical Spectrum) has had an update to version 0.2. [url="http://www.…

    ... -Player (the AY music player for a Real, Physical Spectrum) has ... , because most of the memory manipulation code has been re-written to ...
    trellis trellis December 2003 Announcements
  • Access Database function in ZX-Rainbow S.E. yes or no?Dear friends and users of ZX-Rainbow! history: I have had some problems with ZX-Rainbow S.E. and a very bad time last weeks: The game scanner of ZX-…

    ... "out of memory" appeared.

    I checked my code, but finally ... 16000 lines) needed so many memory. But that wasn't right ... /> Now, I know that the memory problem occurs only under Windows ... to keep the files in memory for faster access. But - after about ...
    Seejay Seejay April 2004 Emulators
  • Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …

    ... was going to hardcode/code up the Sam screens ...
    Here is the code:

    [CODE]
    void SpriteInitialise()
    #endif
    }
    [/CODE]

    The emulation routines ... RAMTOP to
    32767. Memory for static objects is allocated at ...
    DonkeyPong DonkeyPong January 2007 Development
  • oh my the old days :)programming on the speccy again here is a routine i remember of the top of my head to load screens or code without a header wow 5 Clear 27999 : Re…

    ... to load screens or code without a header wow ... 5 Clear 27999 : Rem clear memory for usr 28000
    10 Border ... "I am loading your code"
    70 Randomize Usr ... /> 221,33 = start of the code

    0 = ... br /> for example 0,64 0+64*256 = 16384 (code to load ...
    wadfm wadfm June 2008 Sinclair Basic
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... snapshot fileformat that support extended memory for ZX (clones) ? I ... STEALTH" support save extra memory in Z80 files (contain ... 512/1024 models use complette memory for correct work. BIOS can ... file with length = zx memory size(uncompressed raw) + additional ...
    velesoft velesoft August 2009 Emulators
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... a bit of shared memory for communication with another process. ... }
    exit(0);
    }[/CODE]

    As perhaps you ... char bl_ctrl;
    char bl_byte;[/CODE]

    aND Here ... bl_ctrl to zero.

    [CODE]#include

    #include ...
    wilsonsamm wilsonsamm December 2009 Chit chat
  • Average PC Memory size increasing by 48K every half hourAs I'm absolutely sure everybody here is aware, Moore's law states that the number of transisters in a device will double on average every 2 years. …

    ... how long it takes for average memory in a baseline PC ... I linked with 4GB of memory for the same price, buts lets ... now)
    [*]Time taken for memory to increase by 48K == 49 ... is different for different profile devices. For Smartphones, the average memory is ...
    takapa takapa August 2010 Chit chat
  • +3e with DivIDE systemsIf we replace old R-GAL chip on original DivIDE with new XR-GAL (this is only firmware for GAL chip) then will possible DISABLE or ENABLE any DivIDE …

    ... ZX for detect IDE,etc. Yet is possible in assembler code use ... HDD...

    If any code switch +3 basic to USR0 ... enable DivIDE system with this code:
    DI
    CALL #1FFB ... 48rom and enable 128kB memory.

    For return from 48basic to ...
    velesoft velesoft January 2012 Hardware
  • A Miscellany of Dangerous TipsHere's a selection of ideas for using some of the more obscure system variables which I've found handy on occasion. They can be very convenient if us…

    ... which includes a method for hiding machine code (or anything else ... can be used for code or data or for preserving variables from ... BASIC. If using the space for code or data, [b]don' ... )
    * Poking a string to memory... (Mar)
    * Keyboard problem... ...
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • More memoryHi all... can anyone help, Is it possible to get more memory for basic pref' in Basin.... 40 odd k is just not enough !

    Hi all... can anyone help,

    Is it possible to get more memory for basic
    pref' in Basin.... 40 odd k is just not enough !
    loonix loonix November 2012 Sinclair Basic
<1234567…34>

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