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  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    ... did anyone think in [I]contended[/I] terms? How does this ... DMA interface deal with video contended memory?
    I mean: How ... block?
    [/QUOTE]

    Contended memory is not only by ...
    piters piters March 2007 Hardware
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    [QUOTE=piters;175876]Contended memory is not only by ... />
    If DMA access to contended memory, ULA stopped clock for ...
    velesoft velesoft March 2007 Hardware
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    ... ;175908]If DMA access to contended memory, ULA stopped clock for ... example of DMA transfer with contended memory. DMA read and write ...
    velesoft velesoft March 2007 Hardware
  • External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…

    ... of dataflash. There are spare IO lines, so connection to a ...
    dtl dtl March 2007 Hardware
  • My emulator doesn't take "commands"Hi This is probably a question that is very hard to answer, but perhaps some of you have/had the same problem. In my own emulator (that I have built)…

    ... doubt any of the block IO instructions will cause 48K BASIC ...
    Laser Laser March 2007 Emulators
  • Where to start?Hi all, I wanna start coding something for the speccy. I have good experience at C/C++ and some other languages. I have coded asm on pc too, and ma…

    ... was probably running it in contended memory either, but most of ...
    Winston Winston March 2007 Development
  • Need advice choosing one of these optionsA few spanish friends are willing to help me build and program the ethernet interface for the Speccy. Here are the possibilities. Any advice would be…

    ... spectrum > serial IO interface. For whatever serial IO you choose (I2C ...
    dtl dtl April 2007 Hardware
  • The Unofficial Official 25th Anniversary celebrations and Website announcement threadAs Martijn's going to be away during the festivities, can people report what they're doing here please, as and when they have something to announce. …

    ... Timex TC2068
    11 Timex TC2048
    12 Investronica Spectrum+
    Marcelo Marcelo April 2007 Sinclair Miscellaneous
  • RGB OutputWas there ever a device available for the 48 that had a RGB output ? As an alternative , what about using a pc monitor (iirc these have seperate syn…

    ... />
    Pages 10 through 14 (TC2048 service manual from W.O ...
    zxbruno zxbruno April 2007 Hardware
  • Timex Sinclair stuff wantedI will pay 500USD if someone can sell me all of the following items: 1 Timex Sinclair 2068 1 Timex Sinclair 2090 command stick 1 " " …

    ... books. I also have a TC2048 and FDD3000 in Portugal. I ...
    zxbruno zxbruno April 2007 Wanted
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    [URL="http://homepage.ntlworld.com/mark.woodmass/amaurote.csw"]This[/URL] loader works well in contended memory under emulation. I've not tried it on real hardware.
    Woody Woody April 2007 Sinclair Miscellaneous
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... [/URL] loader works well in contended memory under emulation. I've ...
    alexsut alexsut April 2007 Sinclair Miscellaneous
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... counts and eventually it was contended memory that was causing the ...
    BloodBaz BloodBaz April 2007 Sinclair Miscellaneous
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... counts and eventually it was contended memory that was causing the ...
    obo obo April 2007 Sinclair Miscellaneous
  • ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank

    ... ! I've got myself an TC2048 computer in Portugal in the ...
    Gods Gods May 2007 Wanted
  • ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank

    ... ULA chip (russian made). The TC2048 use the same TS2068 ULA ...
    Gods Gods May 2007 Wanted
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... /48kreference.htm"]this[/URL]. The contended memory section is about halfway ...
    Woody Woody May 2007 Sinclair Miscellaneous
  • Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…

    Hi,

    MPS 6727 in Q1 on a TC2048 issue 4b (replacing a ZTX 750)

    Cheers.
    odious odious May 2007 Hardware
  • Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…

    ... 128k models, there's no contended RAM and there's no ...
    Sonic Sonic May 2007 Hardware
  • GP2X - Spectrum EmulationHi all. Looking for advice on the GP2X and (especially) the quality of its ZX Spectrum emulation. Has anybody anything to say about the console - is…

    ... should. It's due to contended memory emulation, which was only ...
    Metalbrain Metalbrain May 2007 Emulators
  • Vote for the change of TZX formatThere is an ongoing discussion on the proposal of Patrik Rat to change the current TZX format specification to one that is simpler to implement for e…

    ...
    Kraplock2 - Woodys loader
    Contended Loader - Woodys loader again, needs ...
    Tom-Cat Tom-Cat May 2007 Emulators
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    ... ROM as the TS. The TC2048 is 100% compatible (but I ...
    jboatno4 jboatno4 May 2007 Hardware
  • Vote for the change of TZX formatThere is an ongoing discussion on the proposal of Patrik Rat to change the current TZX format specification to one that is simpler to implement for e…

    ... /> [QUOTE]Kraplock2 - Woodys loader
    Contended Loader - Woodys loader again, needs ... would argue that Woody's contended loader would fall under the ...
    Philip Kendall Philip Kendall May 2007 Emulators
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    The TC2068 Spectrum Rom Cartridge use an TC2048 ROM chip. (because 2048 use the same ULA chip then 2068, some minor ROM code change)
    Gods Gods May 2007 Hardware
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    I have one TC2048 and one Timex FDD3000. The TC2048 is not 100% compatible. There are differences in the way it reads ports, keyboard, etc. Some of the games are totally incompatible.
    zxbruno zxbruno May 2007 Hardware
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    I've got one TC2048 (made in Portugal) and all my Spectrum games works. In very (very) rare cases, the Kempton joystick port doesn't respond.
    Gods Gods May 2007 Hardware
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    [QUOTE=Gods;189887]I've got one TC2048 (made in Portugal) and all my Spectrum games works. In very (very) rare cases, the Kempton joystick port doesn't respond.[/QUOTE]

    Try Uridium ;)
    Fred Fred May 2007 Hardware
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    [QUOTE=Fred;189897]Try Uridium ;)[/QUOTE]

    Sorry, I don't have the TC2048 anymore... I have to sell it to buy an Amiga 500 computer (long, long time ago...) :wink:
    Gods Gods May 2007 Hardware
  • Vote for the change of TZX formatThere is an ongoing discussion on the proposal of Patrik Rat to change the current TZX format specification to one that is simpler to implement for e…

    ... ), 256 char alphabet

    Contended Loader - 256 char alphabet, A ...
    Tom-Cat Tom-Cat May 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…

    ... you complete your code in contended RAM (which screen$ memory is ...
    icabod icabod May 2007 Development
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