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<1…16171819202122…34>
  • PZX file format draft[QUOTE=Andrew Barker;186084]To this date, there is no rival format for TZX, despite people saying they can do better. Well the challenge is on, prov…

    ... format preferably for ZX Spectrum computers, thus the ZX in the name ... hardware specific value, and it is valid only for the 48k machines ... />
    - either use a generic value, e.g. milli seconds
    ZX emulation best. For any other ...
    Patrik Rak Patrik Rak May 2007 Emulators
  • Question on Z80 R/W cycles.Snipped from the complete spectrum ROM disassembly: [CODE] Now the memory is checked. 11DA RAM-CHECK LD H,D Transfer the value…

    ... 1 bit chip, so whatever value you set yields the same ... after some idiot tried a ZX-81 RAM pack on it ... they had it upgraded to 48k at the same time)

    (The idiot with the ZX-81 RAM pack was me ...
    Winston Winston August 2007 Sinclair Miscellaneous
  • list of ZX games with raining effect(ula snow)If you know any ZX games with raining effect in screen, then add game name to list. I know about this games only: (tested on real ZX128+2 - grey) 4x…

    More ZX games can rain if you ... memory paging. If 48k game set register I to value #BF-#FF ...
    velesoft velesoft April 2008 Games
  • Disposal of pristine condition equipmentHi everyone. I've joined this forum as I'm hoping you will be able to offer me some (sensible!) advice. I am decluttering my apartment (20 years ov…

    ... confident they would raise market value for it.
    < ... /> * Spectrum 16K upgraded to 48K by Sinclair ( number 001-048078 ... x "BASIC programming" plus 1x "ZX Printer Instructions"

    ... br />
    * Leaflet on ZX Microdrives

    * May ...
    Specyspecturm Specyspecturm May 2008 Sales
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... characater printing tool for the ZX Spectrum 48K.
    ; It incorporates ... joefish's 'Rainbow Generator for 48K Spectrum using PUSH'.
    ; ... , (attr_p) ; get permanent attribute value in A
    ld hl ... ld a, (de) ; get the value
    ld (hl), a ; write ...
    chev chev May 2009 Development
  • zzspectrumI see that zzspectrum.org is down. Does anybody have any documentation for zzspectrum or the full package of bits I need to get it running? I tried…

    ... Qaop ZX Spectrum emulator Java applet.

    * Emulates Speccy 48K/128K ... and AY.
    * Loads SNA (48K/128K) and Z80 snaps.
    mode select ZX Spectrum mode either 48 or ...
    FrankT FrankT October 2009 Emulators
  • Why did Ultimate games load like this?What I remember about the early Ultimate games was the unusual way they loaded. You'd get the BASIC bootstrap loader, then a SCREEN$, then a main bl…

    ... the timer to a specific value (lsb=90, msb=131) and ... that a bug in the 48K ROM made this variable useless ... it trying to control the ZX Printer? ULA2 users take note ...
    Jimmy Jimmy February 2010 Games
  • Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…

    ... it has special nostalgic value for russian people who were ... could only get russian ZX Spectrum 48K clone or some russian ... well (you only have 48K clone with b/w TV ... hit, there was no ZX in USSR (pre-1985), ... and then ZX got popularity here, it already ...
    Shiru Shiru March 2010 Games
  • DivIDE and joystick interfaceWhich joystick interface works with the DivIDE and ZX 48K? I have TurboRAM but it works not correct or blocks DivIDE. Multiface One works with the j…

    ... in the back of the 48K Spectrum, but when connected to ... bug. If CPU write any value to port 31 then interface ... ? You connect as first to ZX your kempston interface and as ...
    velesoft velesoft April 2010 Hardware
  • Average PC Memory size increasing by 48K every half hourAs I'm absolutely sure everybody here is aware, Moore's law states that the number of transisters in a device will double on average every 2 years. …

    ... bytes (approximately 43, 700 ZX Spectrum 48Ks worth)
    ... == 1,719 seconds == approx 48K every 29 minutes
    [/LIST ... is rising by approximately 48K every 29 minutes.[/B ... So, with the OP's value for n=2, and assuming ... .
    With foggy's value of n=1.5, we ...
    Bermondsey Bob Bermondsey Bob August 2010 Chit chat
  • iPhone App - Using the API to search for Spectrum gamesHi, Apple has just approved the WOS (World Of Spectrum) App, it is a wrapper around the wonderful API that has been created for us to search. You c…

    ... (Arrr, Matey) That the shock value is gone.
    [QUOTE]but ... first computer was a ZX Spectrum 48K around 1986 and that is ...
    OZApps OZApps September 2010 Announcements
  • DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…

    ... why... This OUT command write value #7F,#7E or #00 to ... game crash or work incorrect, ZX show 2nd videoram with black ... better way:
    Set yout ZX to 48 BASIC (or write ... 128+ menu, from there select 48K basic, then loading the game ...
    daznic daznic October 2010 Hardware
  • Mister Beep honourThis year we had a great amount of games with music produced by [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=%5EMister+Beep$&loadpics=…

    ... Timex Computer 2048, or any ZX Spectrum 48K, 128K and highers."
    value (and TS2068/TC2068 are 1 ...
    mheide mheide December 2010 Games
  • Some TAP files not working on DivIDEOne of the people who ordered a DivIDE from me told me het can't load certain TAP files, which load perfectly on emulators. I have encountered that …

    ... [url]http://velesoft.speccy.cz/zx/divide/divide_57c_%28component_side%29.png ... speccy.cz/zx/divide/divide_57c_top.jpg[/url]

    Value of resistors ... mode). After power-off ZX is erased system in DIVIDE ... will it work ok on 48K ones too?[/QUOTE]
    < ...
    velesoft velesoft January 2011 Hardware
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... differetiating a genuine non-modded ZX Spectrum 48K from anything else was ... is a genuine, non modded ZX Spectrum 48K, and 0 for any ... is only performed on low value rows.

    Anyway, ... , a true ZX Spectrum 48K.

    The greater the value in B ...
    mcleod_ideafix mcleod_ideafix May 2011 Emulators
  • Question about divide +Hi A friend has sent my a faultly divide + to see if I can repair it. If I use this divide+ with a spectrum 48K (That works perfectly with my stand…

    ... /rom paging instead original ZX rom. RESIDOS need this ... into USR 0 mode (48K Basic, but with all ... DiviDE Plus any other ZX interface with external memory ... br /> 2) fix vector value on data bus. Always ... reset button (usable on ZX Spectrum 14/48kB models without ...
    velesoft velesoft May 2011 Hardware
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... have installed in my ZX Spectrum 16K/48K PCB's. Zilog being ... 6004, sometimes preserve its previous value)
    IR = 0000

    value is still there! The cold ... IY commonly hold their last value after a warm reset (using ...
    mcleod_ideafix mcleod_ideafix May 2011 Emulators
  • Help identifiying a very old gameHello, first post here although I've lurked for a while :) Great site! This is a long shot, but I wonder if anyone can help me find a game I played…

    ... joystick facility. There are better value games around of this type ... and good value.

    ZAXXAN
    Producer: Starzone, 48K ?5.50 ... a stir at the 9th ZX Microfair where it was to ... keys and Kempston joystick. Good value for money, addictive to play ...
    Rawhead Rex Rawhead Rex June 2011 Games
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... com/wiki/Category:ZX_Spectrum_technical_information]The ZX Spectrum technical wiki[/url] ... t_states counter by an appropriate value after executing consecutive instructions ... byte for the new value of PC from the ... need to take the new value of PC [i]from ...
    ccowley ccowley June 2011 Emulators
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... computers in 1985 with a ZX Spectrum 48K, and at the age ... for them to see the value of those basics.

    taylorza taylorza September 2011 Chit chat
  • FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…

    ... ", "b" and "c", overwritting the value "1" and "2".
    4 ... affected:[/B] ROM BASIC in ZX Spectrum 48K / 128K / +2 / +3 / Sam ...
    mcleod_ideafix mcleod_ideafix October 2011 Sinclair Basic
  • Second Hand SpectrumHi just joined the Forum. I have picked up a Spectrum at a s/h shop and would like some advice please. I have had two ZX81's packed away for severa…

    ... womblesretrorepairshack.blogspot.com/2008/11/zx-spectrum-composite-video-mod. ... .blogspot.com/2008/11/zx-spectrum-composite-video-mod. ... necessary for the Spectrum 16/48K, this has been discussed ... the +12V. The exact value isn't critical, 10~15V ...
    RetroTechie RetroTechie October 2011 Hardware
  • PFlagsIs there an explantion somewhere of what bits mean what in the printing flags? 1 23658 FLAGS2 More flags. 1 23693 ATTR P Permanent current col…

    ... /> [SIZE=1]1 - Set if ZX Printer is in use. [/SIZE ... - Set if 'L' mode, temporary value.[/SIZE]
    [SIZE=1]3 ... /> [SIZE=1]4 - Unused by 48K BASIC.[/SIZE]
    [SIZE=1 ... - Not used - held state of ZX buffer.[/SIZE]
    [SIZE=1 ...
    roko roko December 2011 Development
  • Saving space using procedural graphicsAfter spending several hours playing around with various packers to squash the Alien8 test screen$ it occured to me that maybe bigger space savings c…

    ... of gray, byte per pixel (48K for whole screen). I draw ... as translucent (just adding a value to the buffer). After a ... , it is converted to normal ZX Spectrum screen using error diffusion ... tech could be used for 48K with low resolution buffer - 128 ...
    Shiru Shiru July 2012 Development
  • Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…

    ... RESET, the machine boots into 48K, but it gets a little ... active.[/QUOTE]

    If ZX is in 48 basic and ... time to data bus different value (data collision)...
    Test this ...
    velesoft velesoft August 2012 Hardware
  • Query about memorySo I know this has been asked a lot and I beg your brief indulgence. I have scanned through a lot of old threads already but I'm trying to improve m…

    ... chips used in the ZX Spectrum 48k models are eight DRAM ... ) giving a total of 48k addresses by 8 bits wide ... ROM OS will store a value in the system variables ... data line is okay), any value can be stored.
    ... 255 for a fully working 48k machine and give 127 ...
    1024MAK 1024MAK October 2012 Hardware
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