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<1234567…34>
  • Need help from 48K/128K/+2 owners (not +2A/3)!It’s hard to target the right demographic, so I’m repeating my humble request here. Could you, given a few spare moments, test [url="https://www.w…

    ... , given a few spare moments, test [url="https://www.worldofspectrum.org ... -help-from-people-with-a-48k-128k-2-not-2a-3"][b ...
    Ast_A_Moore Ast_A_Moore September 2017 Hardware
  • 48k / 128k Game VariationsHi folks! When a game is listed as being for "ZX Spectrum 48K/128K" in the archive does this mean loading it on a 128k definately gives an enhanced …

    ... as being for "ZX Spectrum 48K/128K" in the archive does this ... mean loading it on a 128k definately gives an enhanced version ... emulator/spectrum will default to 48k mode to run it?
    Gigantic Ant Gigantic Ant June 2005 Sinclair Miscellaneous
  • Q. on a book (48k/128k ROM dissassembly)Would you, great WoSsers, please recommend THE greatest, bestest and preferably completestest Speccy ROM (any 48k & 128k (not QL, zx80/81, nor clones…

    ... preferably completestest Speccy ROM (any 48k & 128k (not QL, zx80/81 ...
    Skarpo Skarpo April 2007 Sinclair Miscellaneous
  • Sinclair ZX Spectrum 48k/128k Bulk Collection of gamesHi all, Have put my entire cassette collection up for grabs (102 games), some gems in here, so take a look and happy bidding:- [url]http://cgi.ebay…

    ... .co.uk/Sinclair-ZX-Spectrum-48k-128k-Bulk-Collection-of-games_W0QQitemZ270566100644QQcmdZViewItemQQptZUK_VintageComputing_RL?hash ...
    Hercules Hercules April 2010 Sales
  • 48K/128K classificationI'm sorry if I've looked in the wrong places and not found it, but what are the rules regarding a game being listed as either: ZX Spectrum 48K ZX Sp…

    ... /> ZX Spectrum 48K
    ZX Spectrum 48K/128K
    ZX Spectrum 128K
    < ... it must be classified as 48K/128K because it behaves differently with ... advertised as being for Spectrum 48K/128K/+2 etc, but makes ... to the 48K mode)? Should it be 48K, or 48K/128K? I'm ...
    PrinceGaz PrinceGaz June 2012 Infoseek database
  • 'Diary on the making of 'Mr.Do!' for the 48k/128k ZX Spectrum' by Mark R. JonesHere is my 'Diary on the making of 'Mr.Do!' for the 48k/128k ZX Spectrum'. It's a free, 50 page PDF. I hope you find it interesting: https://drive.go…

    ... of 'Mr.Do!' for the 48k/128k ZX Spectrum'. It's a ...
    Mark R. Jones Mark R. Jones December 2020 Books
  • Custom SAVE Routine work on emulators?Hi, I'm developing a SAVE routine derived from the one present in ROM 48K, and I'm trying to get it work on several emulators (X128, Spectaculator, …

    ... code within SDV2 ROM and test if the routine is trapped ... dump the game present in memory (16K, 48K, 128K depending on emulated model ... 3D Game Maker saving a 128K game with Speedlock scheme on ...
    worldxxisoft worldxxisoft October 2008 Emulators
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... quote]

    The 48K/128K has two uncontended cycles per ... only gets one contended memory fetch during each eight ... machines.

    The 48K/128K machine's ULA responds only ... contended memory, the 48K/128K ULAs still see a contended memory address ...
    Woody Woody May 2007 Development
  • 48k memory dump to 128k???Having problems getting a 48k snapshot to load into 128k mode using ZX Spin. Tried saving 48k memory as a binary file and loading it back in 128k mo…

    Having problems getting a 48k snapshot to load into 128k mode using ZX ... Spin.

    Tried saving 48k memory as ... a binary file and loading it back in 128k ...
    daveysludge daveysludge May 2014 Development
  • tape copier for 48K files on a 128K machineDoes anyone know of a tape copier (that can save out multiple copies of games, like LERM), that will load a whole 48K game into a 128K machine in one…

    ... will load a whole 48K game into a 128K machine in one ... have been written for the 48K speccy, so require you to ... take advantage of the extra memory of a 128K machine?
    chaosmongers chaosmongers April 2005 Sinclair Miscellaneous
  • 128K Guru requiredThe answer eludeth me, and I seeketh a higher knowledge! I'm in the process of putting together a very simplistic emulation testbench of my laptop s…

    ... I'm stuck.

    48K mode works as expected, and ... . But still, it hangs mid-memory-test.

    I have a ... fake/emulate for a sucessful 128K startup?

    -- Richard
    Phu Phu May 2008 Hardware
  • 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, …

    ... ...

    If on a 48K machine:

    [INDENT][B ... command to execute on a 128K/+2/+3 machine?
    szeliga szeliga April 2009 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    Having more issues with the 48K spectrum I just fixed that ... end.

    Ran the memory test
    PRINT PEEK 23732 + PEEK ...
    whoremoan whoremoan November 2014 Hardware
  • Need help from people with a 48K/128K/+2 (not +2A/+3)Scared ya, didn’t I? Well, this one is very simple and not as involved as [url="https://www.worldofspectrum.org/forums/discussion/55142/need-help-fro…

    ... actual hardware.

    The test is simple. Download [url="http ... to 48K users[/b]: test as described above.
    [b]Note to 128K ... users:[/b] test in both modes, i.e. 48K and 128K.

    Ast_A_Moore Ast_A_Moore September 2017 Development
  • Entire Sinclair Software Collection For Sale - Built Up Since 1988!Sinclair Spectrum Software For Sale Information below includes the title of the software, the type of media it is supplied on and the price. I can a…

    ... Interceptor Software ? 1986)

    48K/128K/+2 Cassette

    ?2 ... Championship Sprint, Ian Botham?s Test Match, Superbowl, Match Day ... Save Memory.]?????????????????????????????????? (Print ?N? Plotter Products ? 1984)

    48K ...
    retrogod retrogod March 2004 Sales
  • Mia - Database Ii 48k/128kAfter 20 years all my Sinclair hardware and software is out of the loft for an airing, my 128K has been kindly repaired by 'Phu', im going to have a …

    ... loft for an airing, my 128K has been kindly repaired by ... look at a couple of 48k's.

    Listing all ...
    Rampack Rampack August 2007 MIA/STP/SDP
  • Zx Spectrum 48k,128k e +2Hi, I'm looking for Speccy 48k issue 5, a Spectrum 128K issue <>6U and ZX Spectrum +2 grey issue 2 and 4. Matteo

    Hi, I'm looking for Speccy 48k issue 5, a Spectrum 128K issue 6U and ZX Spectrum +2 grey issue 2 and 4.

    Matteo
    powerhp73 powerhp73 March 2008 Wanted
  • Error Message on memory testI have just tried PRINT PEEK 23732 + PEEK 23733 * 256 on what I think is a 48K rubber key machine and instead of getting either (a) for a 48k unit…

    ... what I think is a 48K rubber key machine and instead ...

    (a) for a 48k unit - 65535
    or
    Is this indicative of screwed memory ?
    ADJB ADJB November 2008 Hardware
  • 48K -128K upgradeHas anybody ever made, or is it possible to make an upgrade module for a 48K spectrum that will let you operate it like a 128K Spectrum, and back aga…

    ... a 48K spectrum that will let you operate it like a 128K ... good upgrade, it would allow 128K (what there is of it ... ) software to work on a 48K model, but more importantly it ...
    Alien 8 Alien 8 March 2010 Hardware
  • Memory upgradeHi! I bought a 16K rubber key Spectrum. It's said in the box and memory test program also said it's 16K machine. Strange thing is that there is yell…

    ... in the box and memory test program also said it ... bottom with text 48K (i have few 48K machines with ... no soldering needed) for memory upgrade. There is also ... i upgrade 16K-->48K? Motherboard is Issue 2 ... be explanation to this 48K sticker? Machine is almost ...
    lillaolle64 lillaolle64 October 2010 Hardware
  • Toki 48k / 128k ?Perhaps a bit odd, but the unreleased game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0010317"]Toki[/URL] is listed as a 48k game in the …

    ... [/URL] is listed as a 48k game in the archive, but ... author says it shall be 128k only.

    Since it ...
    Rickard Rickard October 2010 Infoseek database
  • FS: Spectrum 48K & 128K with games & magsHi, Having a bit of a loft clearance and i'm looking to get rid of my old speccy stuff, would rather it went to a good home than a scrap heap. I've…

    ... got the following,

    48K, with box, PSU (computer end ... the cassette leads.

    128K, one of the more original ... 128K ones before Amstrad bought them, ... -pack that came with the 48k spectrum, still boxed, which comes ...
    JeffBNorton JeffBNorton December 2010 Sales
  • Spares/Repair 48k/128K + SpeccyThe title says it all! For my 128k + restoration/mod project, I need a keyboard.. So I need a 128k + or 48k + machine for the keyboard.. It doesn'…

    ... all!

    For my 128k + restoration/mod project, I need ... /> So I need a 128k + or 48k + machine for the keyboard.. It ...
    zeropolis79 zeropolis79 October 2011 Wanted
  • Possible dodgy +2 - resets when loadingSo I have a grey model +2 with a recently refurbed tape deck (new belts and cleaned heads). It might be a product of bad loading, but from what I ca…

    ... the freescape games and some 128k versions / 128k only games. Specifically it ... during playing, or resets to 48k mode in the middle of ... some games load fine in 48k mode but reset when using ... this? I suspect there are memory test programs I can use, but ...
    blueowl0708 blueowl0708 August 2013 Hardware
  • Spectrum +3e acting up...Hello, Well, my Spectrum +3e is starting to act up. All 48k games load fine but now no 128k games will load :/ In one 128k game, in the beginning r…

    ... All 48k games load fine but now no 128k games will ... :/

    In one 128k game, in the beginning right ... I have some new memory set aside and tried ... why it won't load 128k games. Btw, by not ...
    Is there a memory test or ULA test, etc... for the +3 ...
    thomas3120 thomas3120 November 2013 Hardware
  • 48K Not booting properlyBought another faulty spectrum from Ebay. This one, when you turn it on, it looks like it's going to boot OK, but when it gets to the point where it…

    ... a 48K spectrum.
    I then tried to load the memory test program ... guesing I still have a memory fault somewhere? Anyone got any ...
    whoremoan whoremoan January 2015 Hardware
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... and ULA contended memory emulation for original 48k and 128k models.
    ... which demonstrates how some 48k or 128k prods are working:
    48k->128k raster modes. Single ... 2. Contended memory works only if you have 48k or 128k raster ( ...
    lvd lvd January 2015 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…

    ... /> However, on running the diagnostic test ROM I get a few ... sounds like the membrane?2. 128K Memory test runs through up to bank ... SELECT FAILED **"
    3. 128k Video page test "Test failed if this text ... sound at all from the 128k specific AY sound tests. The ...
    stevebrowne stevebrowne June 2015 Hardware
  • [NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…

    ... base.

    [b]Test it and please let me ... ’. The emulator pass all the test i have found.
    ... ’ emulated in the affected machines (48k / 128k / +2) (Not 100% accurate).< ... br /> Emulation of the contended memory timings.
    Pixel to pixel ...
    jcgamestoy jcgamestoy September 2015 Emulators
  • 48k or 128k target ?Hi, As a new coder on Speccy, I wonder which Spectrum model to target for my forthcoming developments (game). I can see there are 3 different sys…

    ... differences:

    48k
    128k /128k +2
    128k +2a/+3

    Of course targeting a 128k ... the Speccy community as a 48k one ?

    Which model ...
    majikeyric majikeyric September 2015 Development
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HitBox

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memory 21.8K 32.5K
test 14.3K 19.1K
48k 20.9K 29.1K
128k 16.7K 25K

Related Threads

  • 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…
  • 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…
  • 48K (in 48) vs 48K in 128K / +2 / +3I'm sorry I've probably overlooked this but despite a search I did not see it. :( and looking at some of the tech pages did not really answer my ques…
  • Spectrum games that are both 48k and 128k but where the 128k version is infinitely superiorThe only one I can think of is "Rock Star Ate My Hamster" but there must be others . So where are the games where the 128 version is great but where …
  • 48k / 48k+ Keyboard MembranesCan anyone out there help me to locate a set of new keyboard membranes for my Speccy 48k (rubber keys) and 48k+ . <br /> I've just dusted them off af…
  • 48k with keyboard of 128k+2 and tapes..ahoi!i worked to make a 48k+ with keiboard of 128k+2 and i want to send it! so i have many tapes with games, workings'n' demo, compilation, fanzine!!!! fo…
  • Plotting - 128k only or was it a 48k game aswellI installed a Speccy emulator on my Psion Series 3c palmtop computer, mainly so I could play games on the move. <br /> <br /> Rather slow and only em…
  • 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 …
  • ZX80/81 memory expansion and 48k + Lightpen for saleAll are in original packaging and the lightpen has it's software and manual.<br /> <br /> The memory expansion is a 16k one.<br /> <br /> E-mail me a…
  • WANTED : Spectrum 48K , or 128Kas the titles says :<br /> <br /> looking for a good condition speccy.<br /> preferably original rubber key job, with original leads, preferably boxe…

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