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  • What Good Serious Successful Software Was Written Exclusively in 128K BASIC?I realize now that 128K BASIC has its serious enthusiasts . But I know very little about this type of BASIC . What good titles were written exclusi…

    I realize now that 128K BASIC has its serious enthusiasts . ... titles were written exclusively in 128K BASIC without any machine Code ... am assuming that as the 128K BASIC was pretty good that ... pretty decent software written using 128K BASIC .I wonder if this ...
    harriusherbartio harriusherbartio February 2022 Games
  • NMI Routine and Restarts in a new 128K ROMI'm presently engaged in creating AGD 5 with the intention of making it a pair of 16K ROMs for the 128K/+2. I'm fairly sure that the vast majority o…

    ... of 16K ROMs for the 128K/+2. I'm fairly sure ...
    jonathan jonathan July 2022 Hardware
  • New Game: Hakkenkast : Dungeon Crawler 48K & 128KLaunched this week, a 4 dungeon epic Dungeon Crawler, Hakkenkast. Available as 48K and 128K versions, 1st dungeon is free. Download from[url="https:/…

    ... , Hakkenkast. Available as 48K and 128K versions, 1st dungeon is free ...
    Minilop Minilop August 2022 Brand new software
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... writing stuff to VRAM. RAM contention is off when non-speecy ... two +3 ROMs and extra 128k ROM as well as the ... /> Important Ports

    7FFD - 128k paging

    D0...D2 ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • Anyone got a copy of 'Z80 for primates'?This Z80 lark isnt easy, in fact it makes me feel very much like Washoe the chimp trying to learn learn sign language, I just dont think I've got the…

    ... above 32768 is sensible (for contention issues with ULA memory and ... if you want to use 128k speccy).

    Obviously your ...
    cyborg cyborg November 2002 Sinclair Miscellaneous
  • TZX compatibility issuesI seem to have a problem with using TZX files on different emulators. Specifically, files Saved As TZX from emulator. I better explain: I have a fe…

    ... for blocks saved by the 128K ROM is strictly in violation ... 't the case for a 128K Spectrum.

    The question ... blocks saved by the 128K ROM (barring contention effects, which the TZX ... it's true that a '128K ROM' block doesn't allow ...
    Philip Kendall Philip Kendall May 2003 Emulators
  • an idea that could be very very good...but also very very bad...Hello all! I've been having a chat with some of my friends round here that once loved the spectrum (well...2...as they're all heathens round here...)…

    ... emulator yet written gets 128k/+2 port contention right - and they're ...
    BN^2 BN^2 January 2004 Emulators
  • an idea that could be very very good...but also very very bad...Hello all! I've been having a chat with some of my friends round here that once loved the spectrum (well...2...as they're all heathens round here...)…

    ... different z80 than the memory contention or ULA. There aren't ... than the 48k was with 128k games ;)


    _________________ ...
    b00mzi11a b00mzi11a January 2004 Emulators
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... . Adding support for the full 128K would be another layer of ... time?

    The memory contention (fast/slow RAM) of original ...
    gasman gasman March 2004 Sinclair Miscellaneous
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... ]Adding support for the full 128K would be another layer of ... .

    [quote]The memory contention (fast/slow RAM) of original ...
    cyborg cyborg March 2004 Sinclair Miscellaneous
  • Problem with RealSpectrumWhy am I having difficulty getting certain games to laod in RealSpectrum? The game seems to be loading ok then the screen goes black and nothing hap…

    ... I have based RealSpectrum's contention timings upon my own Spectrum ... discovered today, i.e. that 128K Spectrums are not all the ... seem to have two different 128K ULAs, because there are two ... discovered Megalomania flickers on some 128K Spectrums, but it doesn't ...
    Luca Luca May 2004 Emulators
  • Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?

    ... FAQ figures for 48K and 128K models. I then reassembled SpecEmu ... /frame and tried several arbitrary contention starting points, and it was ... /> A test on real 48K/128K hardware would be good though ... runs.

    Does the contention pattern look at all right ...
    Woody Woody March 2005 Development
  • Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?

    ... /> A test on real 48K/128K hardware would be good though ... />
    [quote]
    Does the contention pattern look at all right ... ?
    [/quote]

    The contention pattern is different to the ...
    Fred Fred March 2005 Development
  • Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?

    ... clear that we have a contention sequence of 1,0,6 ... be identical to the other 128K models, being a straight 6 ... apply a single cycle of contention in there I'm wondering ... if somebody could run that contention program once more and see ...
    Woody Woody March 2005 Development
  • BlueyonderI have just got an email from Blueyonder saying that my broadband speed is going up to 4 meg from 1 meg soon, I pay ?25.00 a month is that a good pri…

    I love my blueyonder broadband. I currently have 1MB which regularly gives me 128K downloads.

    I believe cable also gives you 1:1 contention unlike ADSL which is 50:1 or 20:1 if you pay extra.
    dekh dekh September 2005 Chit chat
  • Emulating the SamRAM on the ZX Spectrum SEGerton Lunter gave me permission to reuse the code, but so far I have not been able to get the software to work in paged RAM banks.

    ... stems from the lack of contention in RAM?
    [/quote]
    128K Spectrum (and the SE?).
    Woody Woody October 2005 Emulators
  • RealSpectrum SoundI'm having trouble with RealSpectrum sound. When I'm in the emulation part, I hear only buzzing and screeching. When I enter some menu, the sound di…

    ... /> Model: ZX Spectrum 128K, 228T x 311 = 70908T - Memory contention: On
    FRGT/10 FRGT/10 November 2005 Emulators
  • Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…

    ... was mastered on 48k and 128k, or other hardware/duplication methods ... this way ignores IO port contention and is therefore incorrect) that ...
    Philip Kendall Philip Kendall November 2005 Emulators
  • Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..

    ... the +2a/+3 - memory contention here comes into play later ... Regarding the timings of the contention, check out the CSS FAQ ... .com/cssfaq/reference/48kreference.htm#Contention"]48k[/url] and [url ... com/cssfaq/reference/128kreference.htm"]128k[/url]. Should give you ...
    icabod icabod November 2005 Hardware
  • 128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…

    ... select. ROM 0 is the 128k editor and menu system; ROM ... , and port #7FFD also causes contention, although the precise details of ...
    Fikee Fikee February 2006 Development
  • Spectrum Game NewsSome snippets of Spectrum game news , via the RT forum and micro mart if you guys are interested.... [url]http://www.retro-trader.com/forum/index.p…

    ... they emulate the 128k and don't have accurate contention, the AY ...
    Dunny Dunny June 2006 Games
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... a lot of *new* contention information gone in, along ... a special kind of contention, which we've called ... "snow contention" applied during snow periods ... machines and then run on 128k.

    Have ... more about the new contention elsewhere.

    Dunny Dunny July 2006 Emulators
  • RealXThis may be a dumb question but will RealX ever get released?

    ... tests, and the "snow contention" is definitely present in ... /> We only studied the 128K ULA directly, not the ... be confirmed for the 128K, I guess I could ... but straight in the 128K. But that's only ... proof of the first contention cycle, the snow mechanism ...
    Luca Luca July 2006 Emulators
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... they could have lost the contention it would have been better ... so much space in the 128K of RAM, or he could ...
    ewgf ewgf September 2006 Sinclair Miscellaneous
  • +2 / +2a : What's the difference ?+2 / +2a : What's the difference ? I still haven't managed to find out this yet. Yes, I know I'm an idiot.

    ... generally between the 48K and 128K machines. A lot of older ... will completely die on any 128K machine, and others have graphical ... in processor speed and memory contention.
    Matt_B Matt_B February 2007 Sinclair Miscellaneous
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... memory contention. Other than that, it behaves pretty much as a 128k ... machine will. The lack of memory contention will make ...
    Dunny Dunny April 2007 Emulators
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... memory contention. Other than that, it behaves pretty much as a 128k ... machine will. The lack of memory contention will make ...
    mulder mulder April 2007 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…

    ... I don't understand what contention point means, but I ... each ULA type has different contention points, correct?) Can you ... contention points, it is contended during [B]complete frame[/B]. 128k ... might have more contention points for opcodes ...
    omega omega May 2007 Development
  • 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…

    ... (each ULA type has different contention points, correct?) Can you explain ... quote]

    The 48K/128K has two uncontended cycles per ... .

    The 48K/128K machine's ULA responds only ... contended memory, the 48K/128K ULAs still see a contended ...
    Woody Woody May 2007 Development
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    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
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    Renegade on April 21
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