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Search Again :: Adv Search 1000 results in 0.185s
<1234567…34>
  • Optimisation Needed! Is this the Fastest way to copy bytes from screen and back again?I have the screen address (say 0,0 i.e 16384) I want to copy 4 bytes wide by 32 bytes high from the screen to an area of memory. I then want to cop…

    ... the screen to an area of memory.

    I then want to copy ... to copy from screen to store)

    Basically, I have 2 functions, one to copy ... 4x32 bytes to "store", Then one to bring it back to the screen
    robpearmain robpearmain November 2005 Development
  • 128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…

    ... screen it needs to access the screen data which is in the 16K bank ... in, so without any bank switching, that is where any ... they relate to the screen. I understand that bank 2 is ... if so load into bank 4 or 6, and ... instead into bank 1 or 3?? I want to avoid any ...
    adrian_singh adrian_singh May 2017 Development
  • maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …

    ... bank switching?

    The Enterprise64 home computer could address up to ...
    A bank switching scheme allows the memory to be expanded to a maximum ... space can be mapped to any of these sections. ... mapped on pages 248 to 251. The remaining memory ...
    Rebelstar Rebelstar February 2013 Hardware
  • How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…

    I'm new to Z80 and ZX Spectrum. So ... how the 128+ models managed to work with more than 64K ... 'm somewhat familiar with how bank switching works (I believe the Apple ... had a weird way of switching banks...IIRC). Anyway, any insight ...
    cbmeeks cbmeeks October 2015 Hardware
  • About BMP2SCR and IFLI filesOne of my doubts with LCD's image tool program is what I can do with IFLI files (ZX 128 mode), once I've converted any image in this format. How can …

    ... and it relys on bank switching and second screen in 128K+, so puting ... BMP2SCR you must copy the data yourself to correct memory areas.< ... hprg.zip file you linked to was interesting... I tried ... in BMP2SCR you must copy the data to correct memory location, and ...
    LCD LCD September 2010 Sinclair Miscellaneous
  • 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…

    ... 16KByte blocks), the bank switching and copy routine needs (ideally) to be running in ... .

    One can explore screen memory, but a Z80 file ... rarely update entire screen, so if we use it to run code ... part of the screen, that may take a while to be re ...
    RMartins RMartins October 2016 Hardware
  • How to copy file from tape (*.tap) to disks (*.dsk) ?I am using zx32 with win98 and i want (in the emulate +3) copy files from virtual tapes to virtual disks. I use => load "NameOfFile" (for copy the f…

    ... +3) copy files from virtual tapes to virtual disks ... .

    I use => load "NameOfFile" (for copy ... ?
    I want copy files on disk for ... it is very easy to copy c64 tapes programs from ... convert the files from tapes to disks).

    Maverick Maverick May 2001 Emulators
  • Writing to the screen from a bufferI?m designing a game and am spending a bit of time trying different ideas before I commit my self. I?m currently thinking of writing data to a buffer…

    ... this ?back buffer? to the screen. Can the whole screen be drawn from ...
    Mr Millside Mr Millside June 2009 Development
  • Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …

    ... [/b] sequences are sometimes used to copy blocks of data quickly. However ... would be much less profligate to use a loop.

    ajmoss ajmoss August 2010 Development
  • printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…

    i remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyone remember?
    digital digital August 2018 Development
  • How to copy games to a Spectrum +3 floppy? [HELP]Hi you Guys, Can someone please explain, how can i copy a game from a pc to a +3 floppy disk? Or its also possible, to copy to a floppy using a …

    ... , how can i copy a game from a pc to a +3 ... ?
    Or its also possible, to copy to a floppy using a SD ...
    RetromaniaPT RetromaniaPT October 2021 Hardware
  • MacFuse 0.7.0: performance and TR DOS problemsI can't praise Fuse enough for being such a comprehensive emulator that' still updated regularly. I'm grateful for all the new features in version 0.…

    ... without also changing the screen update ratio to 1:3 or more ... Mac OS X 2D API. Switching to full screen allows 100% playback speed ... with a 1:1 screen update ratio.

    Could ... slowdown and send that to me with a copy of their Library ...
    Fred Fred September 2004 Emulators
  • Zero 0.7 / Zero 0.6.5 releasedAfter months of grueling work, I?m proud to announce the Vanilla version of Zero, which is a regular Windows version of the emulator. I?ve tried to m…

    ... when switching to full screen mode anymore.
    * Exit full screen ... if user needs to be shown a ... Reworked pentagon renderer to show aesthetically correct screen dimensions (0.7 ... not resizing correctly when switching between Pentagon and ...
    Arjun Arjun January 2015 Emulators
  • New ZX-Uno Spectrum CoreFor those who haven't noticed, a new Zx-Uno Spectrum core has been published: http://www.zxuno.com/forum/viewtopic.php?f=14&t=406 Those lucky e…

    ... - It is now possible to disable some interfaces: DivMMC, ... screen modes and radastan screen mode.
    - It's possible to ... better.
    - Switching to Radastan screen mode is now made ... instead of ULAplus registers, to avoid future incompatibilities with ...
    Uto Uto June 2016 Hardware
  • Emulators on Mac OSXWhy are Spectrum emulators on Mac OSX so rubbish compared to all the ones available on the PC? 'Fuse' and 'zxsp' don't even have borders and I can't…

    ... the results you get when switching to full screen with the double and ... see what we can do to sort out the problem.
    Fred Fred March 2005 Development
  • Emulators on Mac OSXWhy are Spectrum emulators on Mac OSX so rubbish compared to all the ones available on the PC? 'Fuse' and 'zxsp' don't even have borders and I can't…

    ... the results you get when switching to full screen with the double and ... see what we can do to sort out the problem.
    to make the screen bigger. I've been ...
    Mark R. Jones Mark R. Jones March 2005 Development
  • Ghost Castles - Brand new game by WSSThe first 256K game which uses ROM paging technology on ZX-Spectrum 48K ! How ? It is a full 48K game with one special ROM which contains many part…

    Personally, I'd just like to say that while the game ... just got the darn thing to load properly.

    ... available information on getting the bank switching to work...

    Oh, ... any information on how the bank switching works, or for that matter ...
    Spirantho Spirantho May 2005 Games
  • Sceen$ helpMost people have used screen$ at some time or another and for me what I want to do is use it or something like it as a start screen before the game p…

    ... an example, study:

    To copy SCREEN$ to memory address 32768


    To move it back to the screen area

    LD BC 6912 ; length of screen ...
    DEATH DEATH May 2007 Sinclair Basic
  • Something completely different (new game tech-demo)Since finishing Stranded 2.5 (available soon from Cronosoft - plug!) I've been playing with the idea of doing an attribute-based, rather than pixel-b…

    If you don't mind, I would also suggest another idea. A game in multicolor 64x48. This resolution can be done just by halving the attrs in y-axis. On the 128k it can be done just with switching to 2nd screen at right spots.
    omega omega August 2007 Games
  • Something completely different (new game tech-demo)Since finishing Stranded 2.5 (available soon from Cronosoft - plug!) I've been playing with the idea of doing an attribute-based, rather than pixel-b…

    ... can be done just with switching to 2nd screen at right spots.[/QUOTE ... 'll be writing - I like to try something new with each ...
    bobs bobs August 2007 Games
  • Fuller AY only gamesThe definitive list: 1) Demonstration Tape 2) Bodysnatchas 3) Star Bike

    ... principle, it would be possible to convert most 128K games that ... chip but don't require bank switching to use it just by changing ... 128K machines are much easier to come by than Fuller Boxes ...
    Matt_B Matt_B October 2008 Games
  • Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…

    ... As well as loading/saving to TAP, TZX and native files ... by the NMI) allows easy switching between multiple running tasks, ... MB02+IDE, due to the NMI button actually causing bank-switching to occur.
    to card/disk.

    ...
    glancaster glancaster January 2009 Hardware
  • Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…

    ... the NMI) allows easy switching between multiple running tasks, ... , due to the NMI button actually causing bank-switching to occur.[/QUOTE ... images & native files) to card/disk.[/QUOTE]
    ...
    Support RESIDOS writing to FAT16 with 4GB partition ?(64kB ...
    velesoft velesoft January 2009 Hardware
  • Abbaye des morts[url]http://www.locomalito.com/juegos_abbaye_des_morts.php[/url] Looks like Spectrum, sounds like Spectrum, but it's not a Spectrum ('cause no colou…

    ... that in order to be able to write to the secondary screen on RAM7 ... sprites [B]used in current screen[/B] should be beneath $C000 ... anywhere in memory, placed to page#2 on demand while switching to another screen.
    catmeows catmeows May 2012 New game ideas
  • New ZX-Uno Spectrum CoreFor those who haven't noticed, a new Zx-Uno Spectrum core has been published: http://www.zxuno.com/forum/viewtopic.php?f=14&t=406 Those lucky e…

    ... - It is now possible to disable some interfaces: DivMMC, ... screen modes and radastan screen mode.
    - It's possible to ... better.
    - Switching to Radastan screen mode is now made ... instead of ULAplus registers, to avoid future incompatibilities with ...
    Rebelstar Rebelstar June 2016 Hardware
  • Game Saves With DIVMMC Devices?When using a DIVMMC device can a game position be saved out to the SD card so I can continue the game from where I left off, some games you need to …

    ... of space if you want to do compression/decompression...
    ... you need to protect it from bank switching, or you have to take ... code in a switched out bank, which would reduce how ... any game which requires bank switching to be disabled to run correctly, so ...
    RobeeeJay RobeeeJay October 2018 Hardware
  • 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…

    ... How can I copy 4k from Backbuffer to Screen in under 1/ ... , I basically want to copy back to front screen with no tearing/flicker ... is ready to copy, I want to

    a) Copy 4096 bytes ... from 8000h to 4000h, with no flicker on the screen ...
    robpearmain robpearmain September 2004 Development
  • BASin Release 13 is now availableI'm still at it. BASin is now in it's 13th incarnation (disregarding the inter-version updates) and is now available at [url="http://homepage.ntlw…

    ... "THEN". This allows you to copy/paste code examples from the ... Added - 128k RAM page bank switching mechanisms for the RAMDisk routines ... )
    Fixed - LOAD ""SCREEN$ didn't display properly (the ... SCREEN$ wasn't properly highlighted ...
    Dunny Dunny January 2006 Emulators
  • BASin Release 13 is now available[unashamedly x-posted from Emulators forum] I'm still at it. BASin is now in it's 13th incarnation (disregarding the inter-version updates) and is …

    ... "THEN". This allows you to copy/paste code examples from the ... Added - 128k RAM page bank switching mechanisms for the RAMDisk routines ... )
    Fixed - LOAD ""SCREEN$ didn't display properly (the ... SCREEN$ wasn't properly highlighted ...
    Dunny Dunny January 2006 Sinclair Basic
  • (part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …

    Here is a routine to copy a Y,X-position on screen to a UDG.
    0
    Dr BEEP Dr BEEP June 2011 Development
<1234567…34>

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