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  • ZX Spectrum BogoMipsBogoMips value gives some indication of the processor speed, and is one of the most used way of comparing diferent systems. The definition of BogoMi…

    ... too) the Sam has extra contention delays to aid a more ...
    Quazar Quazar September 2005 Development
  • 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.

    ... the mainboard that switches RAM contention on/off, which is where ...
    icabod icabod October 2005 Emulators
  • 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]
    Woody Woody October 2005 Emulators
  • 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.

    ... issues - I just highlighted RAM Contention as it's something that ...
    icabod icabod October 2005 Emulators
  • 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.

    ... timing, cycles/frame and memory contention. But again I defer to ...
    MikeW MikeW October 2005 Emulators
  • DivIDEI'm interested in getting one of these, but the site that apparently sells the prebuilt units - [url="http://raww.org/2079"]http://raww.org/2079[/url…

    ... used some of the free io port for +3e, it can ...
    zilog zilog October 2005 Sinclair Miscellaneous
  • 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…

    There isn't really a contention ratio with a blueyonder connection. ...
    KeepGood KeepGood October 2005 Chit chat
  • 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…

    ... , 228T x 311 = 70908T - Memory contention: On
    [/quote]

    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…

    ... . The ZX81 doesn't do contention, in the spectrum sense anyway ...
    MikeW MikeW November 2005 Emulators
  • David Blunkett Releases Statement..... ..... .. .. ... . ...... ... ......... .... ......... ......... ..... .. .. ... . ...... ... ......... .... ......... ......... ..... .. .. ... …

    Yes everything's a great big joke, until its too near your bone and too close to your home.

    Still, such humour exists and must be part of us. People suck, and thats my contention.
    Ælita Ælita November 2005 Chit chat
  • 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…

    ... just via a sequence of IO and memory writes.

    IO and memory writes should I ...
    Philip Kendall Philip Kendall November 2005 Development
  • 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..

    ... on 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="http ...
    icabod icabod November 2005 Hardware
  • Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks

    ... Raul Gomez to include memory contention emulation that was good enough ... managed to emulate that memory contention.
    Metalbrain Metalbrain November 2005 Emulators
  • ZX Advance on the DS....It's fantastic!!! I new soon or later I was bound to get a DS, even though I have Zero time to play with it, and I am glad I did!! First thing I did …

    ... to get perfect memory/port contention? Decent anti-aliased, sub-sampled ...
    Dunny Dunny December 2005 Sinclair Miscellaneous
  • I got my game on my real spectrum at last!I got my demo (Bipboi) on my real spectrum. Spectaculator is so accurate! Here is how I did it: [url="http://www.peargames.co.uk/pctospec/copy.htm…

    ... consisting of
    a standard IO-interface and
    a standard ...
    Dr BEEP Dr BEEP December 2005 Development
  • info for write a emulatorHello Recently, i speak with a german programmer and he says me that in WOS there are a section emulators programmers, where find information about …

    ... features (such as keyboard, sound, contention and stuff) can be added ...
    Dunny Dunny January 2006 Emulators
  • info for write a emulatorHello Recently, i speak with a german programmer and he says me that in WOS there are a section emulators programmers, where find information about …

    ... features (such as keyboard, sound, contention and stuff) can be added ...
    rich_chandler rich_chandler January 2006 Emulators
  • info for write a emulatorHello Recently, i speak with a german programmer and he says me that in WOS there are a section emulators programmers, where find information about …

    ... features (such as keyboard, sound, contention and stuff) can be added ...
    Dunny Dunny January 2006 Emulators
  • 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…

    ... , and port #7FFD also causes contention, although the precise details of ...
    Fikee Fikee February 2006 Development
  • Information on SpecyBob or other new spectrum hardware?Hello all, I'm looking to make a new spectrum from scratch, and would like to find information online etc about how to go about doing so. I've heard …

    ... . At 3.5 and 7MHz contention is emulated and can be ... turned off. Above 7MHz contention is required. I actually had ...
    MikeW MikeW March 2006 Hardware
  • Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…

    ... from the user (memory management, io mapped peripherals, memory mapped peripherals ...
    Alcoholics Anonymous Alcoholics Anonymous March 2006 Development
  • C64 version of LED Storm... Impossible?I have just spent 3 hours playing LED Storm on the C64, and I don't believe that it can be completed without using hacks or cheats, i've managed to g…

    Try [b]Io[/b] or [b]Last V8[/b] on the C64 for difficulty... but both are possible. =-)
    TMR TMR April 2006 Games
  • C# emulatorHi, I wanted to branch out and get a little better with C# so I think I need something meaty to do to keep me going....so an emulator seemed a reaso…

    ... z80 core, work in your contention.

    It's easy ...
    Dunny Dunny April 2006 Emulators
  • C# emulatorHi, I wanted to branch out and get a little better with C# so I think I need something meaty to do to keep me going....so an emulator seemed a reaso…

    ... z80 core, work in your contention.

    It's easy ...
    rich_chandler rich_chandler April 2006 Emulators
  • When is a clone not a clone?If a Spectrum is built from scratch, using new components where available, is it a clone, copy or something else? See, I won an unpopulated Spectrum…

    I saw long ago some schematic of ULA replacement, with about 50-60 logic chips. Very likely it is not 100% compatible - memory contention hardly can be same.
    piters piters May 2006 Hardware
  • Big Brother - You're Safe....I said a week or two ago that my youngest sister-in-law might be a housemate. But, you're safe from the exploits of her on the air.. (she should giv…

    ... />
    The only issue of contention left is the whole B ...
    BigBadMick BigBadMick May 2006 Chit chat
  • 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…

    ... 've been emulating the pentagon contention timings for demos for a ...
    Dunny Dunny June 2006 Emulators
  • speccy speechCan anyone tell me what the first spectrum game to feature digitised speech? Was it Ghostbusters? I think it is but i might be wrong!

    ... got garbled by the memory contention.)
    Matt_B Matt_B June 2006 Games
  • 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…

    ... and don't have accurate contention, the AY music will sound ...
    Dunny Dunny June 2006 Games
  • Best game???Every platform has its best game. What would it be for the Speccy? Any type of game is ok. Thanks! cbmeeks

    ... list.[/QUOTE]

    My contention would be that for any ...
    Matt_B Matt_B June 2006 Games
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