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  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... figure it out from the contention pattern of each instruction, but ... , see xyz).

    The contention happens according to the PC ... extra inserted T states the contention happens according to the value ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... of result above with my contention.tap test).
    Philip Kendall Philip Kendall September 2007 Emulators
  • Leave AY Chip alone guysWould you have a go at a child with down syndrome? No, thought not. AY has Asberge Syndrome, it's a form of Autism - think of that please before y…

    ... could have coded accurate IO contention using Visual C++...

    rich_chandler rich_chandler September 2007 Chit chat
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... the research done before adding contention, floating bus and accurate screen ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... /> ;de = dest

    depack: ldi
    xor a
    ld ... /> jp aploop

    apbranch1: ldi
    xor a
    ld ...
    Metalbrain Metalbrain October 2007 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... /> ld (ap_byte),a
    apbranch1: ldi
    xor a
    ld ... : ld ixl,128
    apbranch1: ldi
    ld ixh,0
    Metalbrain Metalbrain October 2007 Development
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... due to +3's ULA contention. Don't know...

    omega omega October 2007 Hardware
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... due to +3's ULA contention. Don't know...
    [/QUOTE ...
    velesoft velesoft October 2007 Hardware
  • Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…

    ... it nevertheless. The features include contention and floating bus emulation, accurate ...
    Patrik Rak Patrik Rak October 2007 Emulators
  • Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…

    ... it nevertheless. The features include contention and floating bus emulation, accurate ...
    Daren Daren October 2007 Emulators
  • Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…

    ... it nevertheless. The features include contention and floating bus emulation, accurate ...
    Daren Daren October 2007 Emulators
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... />
    The +3 has no contention outside of paper areas. It ... with 16x8 cycle sequences of contention, but with 7 cycles out ...
    Woody Woody October 2007 Hardware
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... ;221119]The +3 has no contention outside of paper areas. It ... with 16x8 cycle sequences of contention, but with 7 cycles out ...
    omega omega October 2007 Hardware
  • Compatible SpectrumsFollowing some recent coding exploits I've been thinking about compatibility of various models of ZX Spectrum. Yes, it's a common question on the for…

    ... all... due to the memory contention issues. The +2a/+3 had ... also the issue of different contention timings to the "original" models ... can't change the hardware contention, surely.


    Of ...
    ingo ingo October 2007 Hardware
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... )
    - I was still applying contention emulation in a place where ... I shouldn't when "no contention" was selected. Now the no ... contention mode will be less precise, ... a bug that made port contention not to be applied in ...
    Metalbrain Metalbrain October 2007 Emulators
  • Oxford Speccy meetup, October 20th[b]Update:[/b] Date and venue decided - The Gloucester Arms, from 2pm, 20 October 2007. Full details: [url]http://matt.west.co.tt/spectrum/oxford-spe…

    ... Life, the Universe, and Memory Contention on the Harlequin (aka Bomb ...
    Winston Winston October 2007 Sinclair Miscellaneous
  • SAM gets ethernetWhilst off topic - head over to [url]www.samcoupe.com[/url]. Colins got his ethernet board for the SAM available to buy and some interesting news ab…

    ... things like RST#8 trap contention can't be sorted out ...
    Winston Winston October 2007 Hardware
  • Spin 0.666 Little Bug using 48K Keyboard helperHello, There is a little bug in the 48K Keyboard Helper. If you try to write an inverted commas ("), LOAD "", for example, if you press the p key a…

    D., have you done something to the contention? Because Aquaplane is running with the lower border approx 4 pixels too high.
    rich_chandler rich_chandler November 2007 Emulators
  • Spin 0.666 Little Bug using 48K Keyboard helperHello, There is a little bug in the 48K Keyboard Helper. If you try to write an inverted commas ("), LOAD "", for example, if you press the p key a…

    I believe Marko accidently disabled contention :-)
    Philip Kendall Philip Kendall November 2007 Emulators
  • Spin 0.666 Little Bug using 48K Keyboard helperHello, There is a little bug in the 48K Keyboard Helper. If you try to write an inverted commas ("), LOAD "", for example, if you press the p key a…

    [QUOTE=karingal;224781]D., have you done something to the contention? Because Aquaplane is running with the lower border approx 4 pixels too high.[/QUOTE]

    Some people are never happy! :-) :-) :-) :-)
    BloodBaz BloodBaz November 2007 Emulators
  • Spin 0.666 Little Bug using 48K Keyboard helperHello, There is a little bug in the 48K Keyboard Helper. If you try to write an inverted commas ("), LOAD "", for example, if you press the p key a…

    [quote=Philip Kendall;224783]I believe Marko accidently disabled contention :-)[/quote]
    Accidently? :lol:
    rich_chandler rich_chandler November 2007 Emulators
  • Spin 0.666 Little Bug using 48K Keyboard helperHello, There is a little bug in the 48K Keyboard Helper. If you try to write an inverted commas ("), LOAD "", for example, if you press the p key a…

    Phil is indeed right - ZXSpin passes his contention tests no problems now that marko has turned contention back on :-)

    I've also discovered a bug in the sound, which will be fixed for 0.667 (coming soon!).

    D.
    Dunny Dunny November 2007 Emulators
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... failed (0x01)
    High port contention 1... passed
    High port ... contention 2... failed (0xfd)

    contention 2' but is otherwise the ... In 48K mode 'High port contention 2' passes (and is otherwise ...
    gasman gasman November 2007 Hardware
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... : ld ixl,128
    apbranch1: ldi
    ld ixh,0
    Metalbrain Metalbrain November 2007 Development
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... )
    High port contention: passed
    High port contention 2: failed (0x02 ...
    Jon Needle Jon Needle November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... ... failed (0x01)
    High port contention 1... passed
    High port ... contention 2... failed (0xff)

    ... ... failed (0x02)
    High port contention 1... passed
    High port ...
    Mr. Anonymous Mr. Anonymous November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... memory... passed
    High port contention 1... passed
    High port ...
    gasman gasman November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... the results expected for having contention starting one tstate later than ...
    Philip Kendall Philip Kendall November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... ... failed (0x02)
    High port contention 1... passed
    High port ...
    Mr. Anonymous Mr. Anonymous November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... memory... passed
    High port contention 1... passed
    High port ...
    Mr. Anonymous Mr. Anonymous November 2007 Hardware
<1…14151617181920…34>

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