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<1234567…34>
  • 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 …

    ... RAM for a Z80 using bank switching?

    The Enterprise64 home ... a Z80?

    A bank switching scheme allows the memory to ... storage of program code and data as well. On the 128k ...
    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…

    ... '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
  • 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…

    ... , 6 and (partly) 7 by switching into them and filling them ... so that any data present in the bank I previously read from ... "]here[/URL]) to copy data from each bank into bank 0 whenever needed. However ... unable to "pour" in bank 0 the data memorized in other banks ...
    Alessandro Grussu Alessandro Grussu September 2013 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…

    ... the screen data which is in the 16K bank $4000-$7FFF ... range, either to read data or execute code, then ... for access to the data and the ULA has ... paged in, so without any bank switching, that is where any ... screen. I understand that bank 2 is already resident at ...
    adrian_singh adrian_singh May 2017 Development
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... a frame to perform the copy. Positives: flicker issues are eliminated ... /> [quote]
    3. Use 128k bank-switching.
    [/quote]
    The lazy ... to continue coding by typing DATA into BASIC ;)
    [/quote]
    Alcoholics Anonymous Alcoholics Anonymous July 2003 Games
  • CEZ-GS strikes back with new Spectrum stuff...Something new is aproaching...March 10th will be a great day for our Spectrum! as you can read in this news... [url]http://computeremuzone.com/?id=n…

    ... /> Everything else was static data (screens) or ASM code. For ... Then, it could handle the bank switching transparently. We would still need ... version doesn't compile its data structures with the binary ... scratch, you could just copy one of the existing subroutines ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Games
  • FMV on +3eOK, so about 6 months ago i posted here that i got full motion video on +3e, with a bunch of scr files called passion. I added the glider rider music…

    ... of the frame load for bank switching and stuff. Thats how the ... partition and prompt you to copy all the audio files to ... 8bit audio data to 4 bit AY during the copy, if required ... send the 8 bit sample data to that port. I have ...
    nuggetreggae nuggetreggae April 2010 Development
  • 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 …

    ... timing, and it relys on bank switching and second screen in 128K ... /> In BMP2SCR you must copy the data yourself to correct memory areas ... ... I tried transplanting the data from the keroro-ifli.tzx ... , in BMP2SCR you must copy the data to correct memory location, ...
    LCD LCD September 2010 Sinclair Miscellaneous
  • Why are rotozoomers on C=64 so fast ?Hi, I noticed rotozoomers on C64 are really fast. I'm not the best coder on Speccy but I know my pet I never succeed to do rotozoomer (or rotating ch…

    ... br />
    you can do bank switching on c64 with the screen ... etc.. thats more than 1 copy of the same logo, but ... .. so u flick the bank to rotate the tower 1 ... />
    the c64 can pump data thru chars (think of them ... t have to change the data on the whole of ...
    fog fog June 2014 Development
  • Monkey Island On Speccy...I would love to see Monkey Island on the speccy...think it can be done...not as much detail or graphics...but along the same story lines.... What ot…

    ... know how is done the bank switching in MSX or CPC. I ... /> At ROM startup you can copy the program from ROM to ... access as needed to the data in all other 16Kb ROM ...
    wilco2009 wilco2009 December 2014 New game ideas
  • I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…

    ... program read back screen data? Your software would have ... if you were to copy data to the screen, as ... in copy the "shadow screen" ... the transfer without losing data, or risk running out ... very clever logic and bank switching... But Sinclair did not ...
    1024MAK 1024MAK August 2015 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 …

    ... can use bank switching, maybe by using a buffer to copy data across banks ... extraction then. Decompressing from one bank to another at 49152. Would ...
    FrankT FrankT April 2016 Brand new software
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... But as a resource for data, it's extremely important, since ... have a FAST replacement of data in an accessible address ... improve over something like a copy or decompression from another ... solution, for development, if bank switching was fast, but currently it ...
    RMartins RMartins July 2016 Hardware
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    Thanks DanDare.

    RMartins, I don't see what your problem is with bank switching speed. Just copy your level data into RAM between levels. What are you trying to do that needs to access multiple banks in a short space of time?
    joefish joefish July 2016 Hardware
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... problem is with bank switching speed. Just copy your level data into RAM between ...
    Dan Dare Dan Dare July 2016 Hardware
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... problem is with bank switching speed. Just copy your level data into RAM between ... be used as break, allowing copy of data.
    - one level will ... in RAM (48k)
    - resource data will be copied into RAM ...
    RMartins RMartins July 2016 Hardware
  • 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…

    ... in 16KByte blocks), the bank switching and copy routine needs (ideally) ... overwriting the system area with data after load.
    ... decompress/copy routine on same ROM bank, as application data.
    Bank and decompress/copy routine in ROM.< ...
    RMartins RMartins October 2016 Hardware
  • New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…

    ... tap file with just the data (no basic) @ 16384
    this ...
    TomD TomD May 2019 Development
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... .

    3. Use 128k bank-switching.


    What system ... to continue coding by typing DATA into BASIC ;)

    BTW ...
    windenNTW windenNTW July 2003 Games
  • 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…

    ... pasted into BASin now using copy/paste.

    The rest ... "THEN". This allows you to copy/paste code examples from the ... .
    Added - 128k RAM page bank switching mechanisms for the RAMDisk routines ...
    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 …

    ... pasted into BASin now using copy/paste.

    The rest ... "THEN". This allows you to copy/paste code examples from the ... .
    Added - 128k RAM page bank switching mechanisms for the RAMDisk routines ...
    Dunny Dunny January 2006 Sinclair Basic
  • Betadisk shematics & 48K-CPMHi out there, can someone help me out with the shematics for the Betadisk-Interface? I built one 17 years ago, it works fine till today, but I'm to …

    ... with TR-DOS and a bank-switching-add.
    It would be ... could contact me, because my copy crashes randomly after a few ...
    PORTHOS PORTHOS October 2008 Hardware
  • LOADing 128k's worth of data???Just getting to grips with the concept of the 128's 'bank switching' set up, but how can you load the stuff into memory from tape (or TAP file)? Do…

    ... concept of the 128's 'bank switching' set up, but how can ... place them in a memory bank with a routine?

    daveysludge daveysludge May 2014 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 …

    ... can copy a bank of data using this routine:

    ; D=source bank ...
    ; E=destination bank ...
    Woody Woody August 2003 Sinclair Basic
  • Monkey Island On Speccy...I would love to see Monkey Island on the speccy...think it can be done...not as much detail or graphics...but along the same story lines.... What ot…

    ... particularly clever bank switching chip, you could get the necessary data onto a ...
    Spirantho Spirantho August 2005 New game ideas
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... be honest, I like the bank switching of ZXCF and it fits ... the rest of the machine bank switches in 16k blocks.[/QUOTE ... blocks, since it makes copying data between pages considerably more of ...
    glancaster glancaster April 2006 Hardware
  • CEZ-GS strikes back with new Spectrum stuff...Something new is aproaching...March 10th will be a great day for our Spectrum! as you can read in this news... [url]http://computeremuzone.com/?id=n…

    ... these challenges with code and data spread across memory banks. ...
    Everything else was static data (screens) or ASM code. For ... as I could switch the bank, do the work and switch ... Then, it could handle the bank switching transparently. We would still need ...
    utopian utopian March 2007 Games
  • Unprotecting games without knowning m.c.DivIDE or MB02 users don't need unprotected games, but those who still use the Microdrive, Wafadrive, Timex FDD, +3, Plus D, Disciple or use the new …

    ... 24999, any PUSH will write data in this area and the ... LDIRS, CALLs, JP's or bank switching is done with disabled interrupts ...
    LCD LCD June 2008 Sinclair Miscellaneous
  • Betadisk shematics & 48K-CPMHi out there, can someone help me out with the shematics for the Betadisk-Interface? I built one 17 years ago, it works fine till today, but I'm to …

    ... with TR-DOS and a bank-switching-add.
    It would be ... could contact me, because my copy crashes randomly after a few ...
    velesoft velesoft October 2008 Hardware
<1234567…34>

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HitBox

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copy 17.9K 22.8K
data 17.9K 34.5K
bank 3.6K 5.8K
switching 2.4K 2.8K

Related Threads

  • maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching?<br /> <br /> The Enterprise64 home computer could address up to 4MB, is this the …
  • LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code?<br /> <br /> I have written the following MC routine that fits into a REM statement in a basic program.<br…
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