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<1234567…34>
  • 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…

    ... around the memory contention issues of the various 128K/+2/+2A ... which is in the 16K bank $4000-$7FFF. Hence if ... in, so without any bank switching, that is where ... screen. I understand that bank 2 is already resident at ... is 128K/+2 and if so load into bank 4 ...
    adrian_singh adrian_singh May 2017 Development
  • 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…

    ... 've been pondering on the 128k memory thing a bit, and it ... /> - bank 0
    - bank 1
    - bank 2 always resident
    - bank 3
    - bank ... 4
    - bank ...
    Sol_HSA Sol_HSA May 2017 Development
  • AY tracker routineHi. Yesterday i played with some ay tracks and was surprised how big are tracker routines and music data (over 1.5KB for Pro Tracker routine and 4-6 …

    ... as being worried by the memory footprint of modules... well.. it ... stick it in a spare 128k memory bank and forget about it
    evilpaul evilpaul March 2009 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…

    ... given Versaload's structure is 128K memory bank switching, so you can seamlessly ... load a 128K program.

    -Stephen
    stephenw32768 stephenw32768 September 2013 Development
  • Z88DK v1.99B ReleasedAt Sourceforge: https://sourceforge.net/projects/z88dk/ It's been a year since the last release so it was time for another. This is another tran…

    ... are placed in a separate 128k memory bank "BANK_06"; pietro_bros defines a custom ... memory map to make it easy to generate a 128k-aware ... , the library defines a standard memory map and reserves some sections ...
    Alcoholics Anonymous Alcoholics Anonymous January 2017 Announcements
  • what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…

    ... from port 7FFD for extra memory pging:
    - for ... those bits for extra memory switching and if it ... the port 7FFD (on +128K/+2) and 7FFD & ... keep track of a memory bank number, by combining bits ... established port for extra memory, other than the Pentagon ...
    secarica secarica September 2004 Sinclair Miscellaneous
  • 128K memory testingDuring a mad half hour I decided to write a little memory tester program in BASIC using the information from the 48K service manual. Now I was wonder…

    ... decided to write a little memory tester program in BASIC using ... testing the ram on a 128K speccy.

    Any suggestions ...
    BruceNorton BruceNorton October 2006 Sinclair Basic
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... original Spectrum 128K memory map (with only one 16K bank pageable) and ... on the Pentagon switches memory banks as described in ... Second category of expansion of memory over 128k.

    ... Third category of expansion of memory over 128k.[/quote]

    ajmoss ajmoss August 2010 Hardware
  • 128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…

    ... , I've built a 128K (toastrack) clone. I ... -correct version detects a 128K machine, and passes both ... the contention behaviour for the 128K ports?
    2. ... 128/+2 have different memory bank models, does not help ... talking about the 128?, bank bit B0 implies odd ...
    csmith csmith July 2011 Hardware
  • 128k toast rack diagnosisHi - I recently won a 128K toast rack, and have got a Retroleum smart card. I've tried a couple of games and all seems fine...-ish.<div><br></div><di…

    Hi - I recently won a 128K toast rack, and have got ... membrane?2. 128K Memory test runs through up to bank 7 but then ... "OK, testing Bank Select.. ** BANK SELECT FAILED **"
    3. 128k Video page test ... sound at all from the 128k specific AY sound tests. The ...
    stevebrowne stevebrowne June 2015 Hardware
  • 1987-2017Here we are, with our tradional thread about games released thirty years ago, where we can contemplate how bad they have aged, how bad they [i]alread…

    ... a 128k Speccy and witness the glorius SPECTRUM SPECTRUM SPECTRUM memory bank problem ... it, each screen has a selection of options depending on your ... , and it's basically a selection of mini-games. I'll ... again...", then there's a selection of follow ups such as ...
    dm_boozefreek dm_boozefreek January 2017 Games
  • divIDE issuesI discovered a few issues with the divIDE hardware and FATware software that may be of interest to some people. 1. ROM paging If your Spectrum is a…

    ... paging.

    2. 128K Z80 snapshots

    If ... Spectrum has been upgraded to 128K using the standard 144K solution ... , then 128K Z80 snapshots will not work ... because it is copying the memory bank that normally sits in 0x8000 ...
    chev chev October 2005 Development
  • How about making a diagnostic program for 128k speccys?Hi guys, I was just chatting with DEATH today about a problem i had with my 128 heatsink spectrum and the need for a 128k speccy diagnostic program …

    ... and the need for a 128k speccy diagnostic program came up ... someone test if the whole 128k memory of his speccy is in ... order. Besides loading the biggest 128k game there is and playing ... not suitable for testing a 128k speccy all the way.
    gtsamour gtsamour July 2007 Development
  • Halloween Special!Like all the best zombies, the ZXSpin project rises again on the last day of October. Here's release 0.666 for your enjoyment - get it at [url]http…

    ... added. Use Speedlock 2 for 128k snaps, please.

    - Work ... - allows you to view a memory bank relative to
    a set ...
    Dunny Dunny October 2007 Emulators
  • Did you have a 128k version Spectrum or only 48k?In the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20495"]thread[/URL] discussing extra features of 128k games it seems like it ofte…

    ... [/URL] discussing extra features of 128k games it seems like it ... the same game for the 128k Spectrum.

    So a ... version of the Spectrum with 128k memory (original, +2, +3 and so ...
    Rickard Rickard May 2008 Games
  • Very simple 128k memory test?Just an idle thought, but... If on a 48K machine: [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B] [/INDENT]yields the last reliable RAM address, …

    ... command to execute on a 128K/+2/+3 machine?
    szeliga szeliga April 2009 Hardware
  • Spectrum +3 suspected memory faultHi, I've been using my +3 for the first time in a while and found that some games have problems with the display becoming corrupted and sometimes cr…

    ... one of the memory chips used for the extended 128K memory. I've ... way to determine if the memory is at fault, and which ...
    JohnH JohnH November 2009 Hardware
  • 128k memory use in multiloadsIs there a way to play golden axe and turtles coin op game on a real spectrum, without having to multiload and just the load the whole game into the …

    Is there a way to play golden axe and turtles coin op game on a real spectrum, without having to multiload and just the load the whole game into the memory at once?
    rustyredline rustyredline January 2010 Games
  • Games only possible in 128K mode?In the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=30145[/url] the discussion of 128K only games comes up, and it made me w…

    ... />
    I mean, obviously the 128K machine allowed for better sound ... it played*), and the extra memory allowed more game data to ... br />
    I mean, the 128K memory could have been used to ... used in any 128K games?

    The 128K also intoruced screen ...
    ewgf ewgf July 2010 Games
  • How to create .TAP that loads into high memory banks?I want to create a program that uses the extended 128k memory, the banks that can be switched into the 0xc000-0xffff area. For the simple stuff I've…

    ... program that uses the extended 128k memory, the banks that can be ...
    Sdw Sdw May 2012 Development
  • More tea, vicar on disk?Hello, can somebody help me putting the 128k version of this game on disk? The 128k version is free available from Jonathans Webseite. However, the g…

    ... help me putting the 128k version of this game ... on disk? The 128k version is free available from ... checking if using a 128k machine and then loading ... sound is loaded into RAM Bank, but which one? ... able to save whole memory, even memory bank and so create a ...
    Speccyman Speccyman June 2013 Sinclair Miscellaneous
  • 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…

    ... screens, music etc.) into memory banks 1, 3, 4, ... and above, I need memory bank 0 to be switched ... copy data from each bank into bank 0 whenever needed. ... understand loading data into memory banks is easier because ... which should select a bank with a POKE [program ...
    Alessandro Grussu Alessandro Grussu September 2013 Development
  • 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 ... you load the stuff into memory from tape (or TAP file ... and place them in a memory bank with a routine?

    daveysludge daveysludge May 2014 Development
  • EmuZwin 128k banks in assembler Having looked at the assembler help file " ORG [{ RAMn | ROMn },] #target_address [, #dest_address ] Defines target assembling address and ta…

    ... is used to define RAM bank (n=0..7) or ROM ... bank (n=0..1).
    If ... to assemble to a particular 128k ram bank? I only need to ... use one bank, so
    which is the ...
    MatGubbins MatGubbins August 2015 Emulators
  • New Utility ZXSTLC[b]New Utility ZX Spectrum Tape (& Disk) Loader Creator[/b] I made this utility to easily create tape and +3 disk loaders for my projects and have…

    ... for page/bank 7 which clashed with some of the 128k buffers ... files for each of the 128k memory banks, while using the ROM ... , see later). For 128k programs with additional memory pages you
    | need ...
    TomD TomD August 2020 Brand new software
  • Best way to codeHi, I've been using Zeus Assembler to code MC programs so far. Nothing fancy just the odd scroll left or animation stuff. Wot I'd like to know is, …

    ... in a different memory bank or lace screens on 128K Spectrum. First time ...
    LCD LCD August 2001 Sinclair Miscellaneous
  • Some \"newbie\" questions about the Spectrum +2I bought a +2 last week. I had never owned any of the 128k Spectrums before, nor seen them in action. I have a couple of questions; 1) Do all 128k …

    ... +2 (I own the original 128K+ machine), I think there's ... , should be loaded in 128K mode. Memory bank swithing is not possible in ...
    Paul van der Laan Paul van der Laan June 2002 Games
  • TAP files for the TS 2068Hi, just recently bought a TS 2068 and found "Taper" on the web. Downloaded it and began to use it only to discover that it would not open TS 2068 fi…

    ... also a built in bank selection memory management unit with the ... the included hardware. This memory management hardware made cartridges possible ... the worry of knowing ROM memory locations. A machine code ... use of the extra memory capability. It already used ...
    Sparky Sparky December 2002 Sinclair Miscellaneous
  • Most engrosing Adventure GameThis is one for all you text adventure lovers. Of which I am one. I remember reading those Fighting Fantasy books when I was a kid. The ones where y…

    ... is to the area of memory taken up by the editor ... stop you paging in a 128k ram bank.
    cyborg cyborg April 2003 Games
<1234567…34>

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HitBox

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128k 16.7K 25K
memory 21.8K 32.5K
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Related Threads

  • 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…
  • WANTED: 128k+ or 128k +2(early grey mod.) ULA chipHello,<br /> Attempting to repair my 128k+ speccy.<br /> Needs a ULA(IC1)chip from either a 128k+ or an early +2 will work also.<br /> If anyone has …
  • 128K memory testingDuring a mad half hour I decided to write a little memory tester program in BASIC using the information from the 48K service manual. Now I was wonder…
  • Very simple 128k memory test?Just an idle thought, but...<br /> <br /> If on a 48K machine:<br /> <br /> [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B]<br /> <br /> [/INDENT]yi…
  • 128k memory use in multiloadsIs there a way to play golden axe and turtles coin op game on a real spectrum, without having to multiload and just the load the whole game into the …
  • Was the Sinclair 128k the same as the 128k +2?I only ever played on a 48k Speccy a few times and I owned a +2 and that's it.<br /> <br /> Was the Sinclair 128 the same as the 128+2? I mean you co…
  • 32k memory Italian memory expansionNot mine but its an [URL="http://www.ebay.co.uk/itm/TENKOLEK-32K-RAM-Expansion-Sinclair-ZX-Spectrum-/320861810075?pt=UK_VintageComputing_RL&amp;hash=…
  • 48k memory dump to 128k???Having problems getting a 48k snapshot to load into 128k mode using ZX Spin.<br /> <br /> Tried saving 48k memory as a binary file and loading it bac…
  • Real Ghostbusters wrong memory label (128k)This game, according to the loading instructions, can also be played in 48K mode.<br /> <br /> [url]ftp://ftp.worldofspectrum.org/pub/sinclair/games-…
  • Captain Fizz wrong memory label (128K only)According to the Spanish instructions, the game can be loaded in 48K mode.<br /> <br /> [url]ftp://ftp.worldofspectrum.org/pub/sinclair/games-info/c/…

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