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<1…25262728293031…34>
  • The complete Spellbound (48k) RAM disassemblyHello everyone. I just wanted to share the fruits of almost two years' labour; I've produced a [URL="http://www.dur.ac.uk/philip.anderson/disassembl…

    Hello everyone.

    I just wanted to share the fruits of almost two years' labour; I've produced a [URL="http://www.dur.ac.uk/philip.anderson/disassemblies/spellbound-48k/index.html"]fully annotated disassembly[/URL] of Mastertronic's Spellbound ( ...
    Weyoun Weyoun July 2012 Development
  • P.A.W. - Help needed!!!!Hello!!! Anyone knows the algorithm used to convert bytes in the Spectrum RAM of P.A.W. games into ASCII? Back in the 1980s-1990s I knew how to do …

    ... convert bytes in the Spectrum RAM of P.A.W. games ...
    marcoagpinto marcoagpinto July 2012 Development
  • Ben Versteeg's july salesI have some very nice items for sale, including a large set of original ROM cartridges! Having trouble with the prices? Make me an offer! Need more …

    ... here[/URL])
    - ZX81 + 16K ram pack unboxed with power supply ... unboxed: €25
    - Timex 1016 ram pack unboxed: €15
    - Several ...
    bverstee bverstee July 2012 Sales
  • Replacing Upper RAM in 48KHi Folks Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Havin…

    Hi Folks

    Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Having followed the guide in the repair info here it looks like an upper memory fault.

    ...
    spookt spookt July 2012 Hardware
  • Issue 3 power problemHi all, I have an issue 3 board with an odd power problem, I have no -5V in fact, measuring the voltage on this line leads to a surprising result : …

    ... TR4 & TR5, as faulty RAM can often take these out ... -5V decoupling caps for the RAM, just in case one of ... to anywhere other than the RAM ? as that might be a ...
    prime prime July 2012 Hardware
  • finding pcs outsidejust found a pc left outside the local village hall next to the bin, but i dunno how long its been out there, the missus reckons 2 weeks. it was up a…

    ... , wifi card, 2 512mb ddr ram strips, sata cable

    mel the bell mel the bell July 2012 Chit chat
  • 80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…

    ... only about 34K of free RAM for your programs.

    chev chev July 2012 Sinclair Basic
  • Developing apps for ZX Spectrum with SDCCDue to troubles with makebin utility which always starts coversion at memory address 0x0000 and can only produce binaries < 32KB, it can't be used to…

    ... /> ;; crt0.s
    ;; zx spectrum ram startup code
    ;;
    ;; tomaz ...
    tstih tstih July 2012 Development
  • More RAM for BASIC (ZXSE required)Ok, here it is: [url]https://dl.dropbox.com/u/15659782/48KBASICSE.zip[/url] Use it as an IF2 ROM with a ZX Spectrum SE. It's a version of the 80x2…

    Ok, here it is:

    [url]https://dl.dropbox.com/u/15659782/48KBASICSE.zip[/url]

    Use it as an IF2 ROM with a ZX Spectrum SE.

    It's a version of the 80x24 mode ROM. PRINT 65536-USR 7962 returns 48641 bytes free. That's more ...
    chev chev July 2012 Sinclair Basic
  • +3e without the romsHi there, I recently purchased a Divide 57c and its awesome with my spectrum+ however I have recently purchased a +2A and would like to use the +3e r…

    ... on the divide - mapped to ram somehow or maybe emulated on ...
    lips2k11 lips2k11 July 2012 Hardware
  • ULA bug and snowI am tryng to improve the snow emulation in FBZX wii but I do not have a real spectrum to test the results. I used the information taken from Harele…

    ... not get latched into the RAM but the previous latched row ...
    Oibaf Oibaf August 2012 Emulators
  • Dual jstick interfaces featuring rear edge expansionsHello. The only dual-port joystick interfaces with rear edges I got are all RAM Turbos. Are there other ones featuring dual ports and a rear edge con…

    Hello. The only dual-port joystick interfaces with rear edges I got are all RAM Turbos. Are there other ones featuring dual ports and a rear edge connector that you could tell me about? Thanks.
    pkersey pkersey August 2012 Hardware
  • Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…

    ... . Replace it with a static RAM IC.

    Ah ... than a static RAM. A static RAM has one chip ...
    We only want the RAM to be enabled when the ...
    3. Insert the static RAM into the socket.
    A ... pin 20 of the static RAM should be bent horizontal. ...
    Winston Winston August 2012 Hardware
  • TESTROM3 - utility/rom for test your ZXHere is TESTROM3 utility as 16kB ROM file + flasher for install this rom to divide eeprom (or mapram mode). Work also on ZX Spectrum without ROM and …

    ... eeprom chip). Not need ZX ram.

    Menu controll:< ... (48 basic with enable 128kB ram)

    TEST 128kB ... black).
    If detect bad ram then show small multicolor lines ... menu.

    TEST FAST RAM
    =============
    Test only fast ...
    velesoft velesoft August 2012 Sinclair Miscellaneous
  • 16k Issue 2 board and DivIDE load errorsI today got an Issue 2 16k board (thank you PMSR) that i added the logic and ram on to get a 48k machine. However, I am unable to load software from …

    ... i added the logic and ram on to get a 48k ...
    Johan1973 Johan1973 August 2012 Hardware
  • Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…

    ... and socketed the whole upper RAM, still same issue, Paul Farrows ... RAM tester produced no faults, but ...
    Macc Macc August 2012 Hardware
  • 128kB snapshot on ZX48kBWhat is best way for 128kB snapshot loading on 48kB models ? Some Z80 snapshots are 128kB versions (Z80 v2 or v3) but contain 48kB games. Same proble…

    ... last 16kB of ram load current ram page ? Or set ram page 0 ... and from 49152 load always ram page 0 (inspired by REALSPECTRUM ... snapshot only contain next unusable ram pages.

    - If 128kB ... load always only 48kB ram with current ram page from port 7FFD ...
    velesoft velesoft August 2012 Emulators
  • Z80 snapshot formatI read documentation for Z80 snapshot on WOS and see in table possibility insert ROM image to Z80 file. Here is full table: [code]The pages are numb…

    ... all this emulators accept only ram pages from Z80 snapshot and ...
    velesoft velesoft August 2012 Emulators
  • Some more PC questions1. Since we ended up discussing Linux in another thread, it made me wonder is Linux really, objectively faster than Windows? I mean, can you run, say…

    ... can't afford/find more RAM. But I think Linux's ...
    ewgf ewgf August 2012 Chit chat
  • Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …

    ... machine worked (mostly). Change a RAM chip, and the display cleaned ... /> IC15
    IC16
    All RAM chips
    IC6

    Spirantho Spirantho August 2012 Hardware
  • Issue 3 board - Free to good homeI have an issue 3 board that someone could scavenge for spares or even repair if they're willing to pay the p&p. I got it off someone on Amibay in a…

    ... some stage most likely a RAM had bought it, taking both ... NEC z80 and socketed upper ram. I'd rather turn this ...
    napoleonblownaparte napoleonblownaparte August 2012 Sales
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... clocks, and enough fast block RAM to implement an extra memory ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • 128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…

    ... properly. I have borrowed an oscilloscope and I measure the input ...
    Johan1973 Johan1973 August 2012 Hardware
  • A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …

    ... cycle accurate)
    512K RAM plus 64K video RAM
    Stereo AY ...
    mspec mspec August 2012 Hardware
  • Calling All Emulator Authors...Hi guys, This may sound like a crazy idea, but I wondered if it might be possible to incorporate Arcade Game Designer into an emulator in some way? …

    ... , setting up each script in RAM and running the compiler through ...
    jonathan jonathan September 2012 Emulators
  • New ZX Spectrum emulator for Jupiter AceProject page (sorry in Spanish) [url]http://retrolandia.net/foro/showthread.php?tid=36[/url] Try it in a Jupiter Ace emulator [url]http://jupiler.re…

    ... a real machine but requires RAM expansion (19K or 51K) and ...
    antoniovillena antoniovillena September 2012 Emulators
  • Assembly game programming on ZX how-to?Hi. I'm planning to build and release new software for the Speccy but I'm pretty lame as to handle its hardware despite a good mastery of Z80 assembl…

    ... drawing the "sprites" on upper RAM and "blitting" it to the ...
    pkersey pkersey September 2012 Development
  • SASPGS: Super Advanced Secure Password Generator SimulatorWhether you're fed up of people guessing your password, or you can't think of anything more original than 'password' or 'qwerty', help is at hand tha…

    ... with at least 16K of RAM, or good emulator.

    Shaun.Bebbington Shaun.Bebbington September 2012 Brand new software
  • Micro Command Speech Module(This is at the request of a certain Roger Jowett....) He has a micro command speech module - [url]http://www.worldofspectrum.org/infoseekid.cgi?id=…

    ... if anyone can identify the RAM and ROM used by this ...
    rwap rwap September 2012 Hardware
  • New javascript Jupiter Ace emulatorThis is the link: [url]http://jupiler.retrolandia.net[/url] And this is a small description (the same text as the above link): jupiler is a Jupite…

    ... machine (3K) with a 48K RAM expansion, sound, Boldfield Joystick, .TAP ...
    antoniovillena antoniovillena September 2012 Announcements
<1…25262728293031…34>

Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
    dmsmith on 11:22PM
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on 9:55PM
  • Goodbye Z80
    moggy on 9:07PM
  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on 6:29PM
  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on 6:17PM
  • I am currently watching.....
    Antiriad2097 on 5:05PM
  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

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