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Search Again :: Adv Search 1000 results in 0.028s
<1234567…34>
  • 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 …

    ... by using a buffer to copy data across banks during the decompress?

    FrankT FrankT April 2016 Brand new software
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... ) but to shortchange on moving data across banks is disappointing.

    I ... post. This one *will* copy across memory banks and honour the bank selected ... up a screen$ and then copy it to the 128's ... you can use it to copy from that extra memory back ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Sinclair Basic
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... ) but to shortchange on moving data across banks is disappointing. [/QUOTE]

    copy data between banks. If you are using ...
    AndyC AndyC November 2006 Sinclair Basic
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... the RAMdisk does do is copy data between banks. If you are using ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Sinclair Basic
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... of its data (levels, screens, music etc.) into memory banks 1, ... t=2839"]here[/URL]) to copy data from each bank into bank ... />
    I understand loading data into memory banks is easier because all ... in bank 0 the data memorized in other banks. I tried several ...
    Alessandro Grussu Alessandro Grussu September 2013 Development
  • Changing the font in z88dkEither I've got this backwards or the documentation is incorrect... :smile: "[URL="http://www.z88dk.org/wiki/doku.php?id=platform:zx"]The standard Z…

    ... banking and minimal memory accesses across banks. If it is necessary to ... access memory across banks, then the process can ... the main 48k and just copy data from the extra memory ... code and data that is compiled into separate banks. They are ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... up data in Banks 3 and 6, then "copy" it back into banks 2 ...
    trellis trellis August 2003 Sinclair Basic
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... up data in Banks 3 and 6, then "copy" it back into banks 2 ...
    Woody Woody August 2003 Sinclair Basic
  • Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…

    Load all the game data into banks that aren't used by + ... ]
    Then copy all the data to the correct banks before running then ...
    FrankT FrankT January 2010 Emulators
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... br />
    .down: push edx ; Copy data
    push esi


    .across: mov eax,[esi]
    and ... .ok: dec edx
    jne .across
    jmp .end

    dec edx
    jne .across

    .end: or ...
    ASM ASM October 2010 Development
  • Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …

    ... a 48K is if you copy data from a source (rather than ... pushing the same value) right across the screen, it takes two ...
    joefish joefish March 2011 Development
  • 128k gamesHi. I've come to World of Spectrum for advice. I'm a Commodore guy OK, please be nice to me, as I seek your wisdom! I love the Commodore 128, and I'…

    ... of the 16K memory banks suffer the same contented ... full speed. And which banks slow down differ between ... switch back to your game data or screen bank. Or ... in chunks, you could copy data from one bank to ... to remember pointers into data on pages that aren' ...
    joefish joefish January 2014 Games
  • Top 10 tape-based 128K-only games of all timeOn foro.speccy.org we came up with this list: La Abadia del Crimen Los Amores de Brunilda Carrier Command Gauntlet 3 The Muncher Pang The Pawn Rod-…

    ... means your program and current data have to fit into the ... and you have to copy data from the other banks at #C000 when ... have to find time to copy the data to the shadow screen ...
    chev chev August 2014 Games
  • Top 10 tape-based 128K-only games of all timeOn foro.speccy.org we came up with this list: La Abadia del Crimen Los Amores de Brunilda Carrier Command Gauntlet 3 The Muncher Pang The Pawn Rod-…

    ... you have to copy data from the other banks at #C000 when ... to find time to copy the data to the shadow ... games you have to copy data to the screen anyway, ... minuscule performance hit swapping the banks to do that.
    ... the screen in those banks, but it's totally ...
    RobeeeJay RobeeeJay August 2014 Games
  • Top 10 tape-based 128K-only games of all timeOn foro.speccy.org we came up with this list: La Abadia del Crimen Los Amores de Brunilda Carrier Command Gauntlet 3 The Muncher Pang The Pawn Rod-…

    ... other games you have to copy data to the screen anyway, so ... minuscule performance hit swapping the banks to do that.

    banks, but it's totally useable ...
    chev chev August 2014 Games
  • 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 …

    ... are trivial: 3 to switch banks, 1 to copy data, 2 to decompress ...
    Einar Saukas Einar Saukas April 2016 Brand new software
  • 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 …

    ... /> LD (COPY+74),A

    ; COPIA copies data from banks 1/3 ... COPY+2, COPY+38 e COPY+74 in order to switch bank.
    ; Banks ... /> LD HL,49152 ; start of data to copy
    LD DE,16384 ...
    Alessandro Grussu Alessandro Grussu April 2016 Brand new software
  • Some Graphic Coding & Audio help.Hello my fellow WoS'ers I am in the process of writing some code for graphical purposes - I have Z88DK raring to go but I do not know how to take…

    ... ) or copy in a loop if the data is a ... display file to load data from disk. This way ... ];" and load the disk data to address "buffer". You ... would load all the data into banks needed in basic before ... compile code into multiple memory banks and it fully supports ...
    Alcoholics Anonymous Alcoholics Anonymous August 2016 Software
  • 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…

    ... />
    Obviously if copy routine transfers the entire 48KBytes ... overwriting the system area with data after load.
    So ... decompress/copy routine on same ROM bank, as application data.< ... have copy routine in RAM, copy 32K (2 Banks), then copy the last ...
    RMartins RMartins October 2016 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 …

    ... those data structures in main memory, spread across the 128's memory banks ... if necessary. If the data structures ... have to be broken up across banks ...
    Alcoholics Anonymous Alcoholics Anonymous August 2017 Brand new software
  • Are 128K games more likely to crash than 48K ones?Hey, guys. I've been doing some experimenting with various games and even some music demos and apps, and I'm beginning to reach a conclusion that …

    ... switches ROM and/or RAM banks into/out of the memory ... , is the loss of correct data across its entire address range, if ...
    1024MAK 1024MAK February 2022 Games
  • Push/Pop methodMachine code question: Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another? I've heard it i…

    Machine code question:
    Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another?
    I've heard it is one of quickest methods, faster then e.g using ldir or writing a loop.
    Is it true?
    Ralf Ralf July 2005 Development
  • Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…

    ... check on multiple items of data, or in a loop, is ... of PUSH and POP to copy data around memory was an awesome ...
    Gedlion Gedlion February 2010 Development
  • Problem Reading the KeyboardHi Folks, I'm working my way through Toni Baker's rather good book and thought I'd write some code to scan the keyboard and store the results so tha…

    ... BC,040d ;40 bytes to copy
    LD DE,_oldKeyStates ... HL,_currentKeyStates ;Source
    LDIR ;Copy data over


    ...


    ;6 Data areas
    _currentKeyStates ;40 bytes ...
    KrazyKattapilla KrazyKattapilla July 2014 Development
  • Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…

    ... self.copyData() #6 - Copy data over
    self.restoreStackPointer ...

    #6 - Copy data over
    def copyData(self ... br />
    #6 - Copy data over ... continued
    def copyLineSegment ...
    KrazyKattapilla KrazyKattapilla August 2014 Development
  • Hiren's Boot CD (invaluable for when Windows is playing up)In case anyone isn't aware of [B]Hiren's Boot CD[/B] (which I should have listed in the Windows programs thread, come to think of it, even though it'…

    ... HBCD to salvage as much data as possible, then bin the ... the familiar Windows functions to copy data from the hard drive onto ... /hard drive, to rescue valuable data.

    Plus it's ... for you to store rescuing data (depending on the size of ...
    ewgf ewgf September 2014 Chit chat
  • 128k memory musingI've been pondering on the 128k memory thing a bit, and it's just bloody stupid. The 64k memory space is divided in four chunks. One is always los…

    ... br />
    Since banks 5 and 7 need to ... will contain the critical game data (like score, inventory, ... 2.

    Banks 0, 1, 3, 4 and ... ,1,3,4,6 banks (probably 0, 4 ... used for audio code/data, 2 banks are for video, ... s at least four banks or 64k left for ...
    Sol_HSA Sol_HSA May 2017 Development
  • 4-pixel scrollingDo you think is 4-pixel scrolling accetable for horizontal shooter ? (aka do u like Chronos ? :)

    ... some ways.
    Sprite routine copy data into screen without any logic ...
    Fikee Fikee February 2006 Development
  • i'm not a peado, but.....how come when i do some work on my PC, it gets deleted, the IT helpdesk are no help what-so-ever in finding it.

    ... stuff on and they just copy it across :lol:

    As ...
    BruceNorton BruceNorton February 2007 Chit chat
  • Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…

    ... to pass pointers than to copy data - it was true once upon ...
    AndyC AndyC February 2007 Chit chat
<1234567…34>

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HitBox

Word Docs Hits
copy 17.9K 22.8K
data 17.9K 34.5K
across 8.1K 8.7K
banks 1.4K 1.9K

Related Threads

  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
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