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Search Again :: Adv Search 1000 results in 0.018s
<1…17181920212223…34>
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... 't these addresses in the ROM area? (First 16K). ... a bit confused...
    48K 48K February 2007 Development
  • 16k Spectrum.How come emulator's in 16k mode don't provide 32 ram-pack support.

    ... /> I never had a 16K Spectrum but the emulation (say ... memory check in the ROM only starts at ... above 49152 on a 16K Spectrum would actually address ... the emulator, the original 16K Spectrum still used bit ... address bus to differentate the 16K ROM and RAM (b15 = ...
    BloodBaz BloodBaz March 2007 Emulators
  • Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…

    ... of a Z80, single flash ROM (up to 512K can be ... ROMs could be stored in 16K pages), single 512K static RAM ...
    Winston Winston March 2007 Sinclair Miscellaneous
  • Galaksija emulator for ZX Spectrum +3/+2A(black)This is a NEW program/utility/game pack for ZX Spectrum. It is basically an emulator of an ex-Yugoslav computer "Galaksija" which is also Z80 based. …

    ... page RAM into the bottom 16K:

    LD A,$03 ... /> To page the normal BASIC ROM back in:

    XOR ...
    Tom-Cat Tom-Cat March 2007 Emulators
  • Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…

    The Spectrum also has 64K - 16K as ROM, which you can't change ...
    Winston Winston March 2007 Hardware
  • Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…

    ... kilobyte of RAM. When shadow ROM is paged in, between adresses ... , RAM is selected instead of ROM! This memory area is used ... 48K are used! The other 16K are not accessible at all ...
    Grecu_hc85 Grecu_hc85 March 2007 Hardware
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... 'd like to build my ROM with the z88dk - essentially make ... the often used functions in ROM so that programs in RAM ... amount of the first 16K page of my ROM as it is ... work if they are in ROM!)
    Winston Winston March 2007 Development
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... 'd like to build my ROM with the z88dk - essentially ... the often used functions in ROM so that programs in ... of the first 16K page of my ROM as it is ... work if they are in ROM!)[/QUOTE]

    I ...
    In terms of a ROM, you can "place" static variables ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... better. Next one has the ROM in a socket so you ... that the fault was the ROM all the time, you go ... the address bus. Fine at 16K, but won't initialise above ...
    DEATH DEATH March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... Research Ltd, but only lower 16K only working. Ramtop gets set ... it ALWAYS initialises as a 16K machine, not 17 or 18K ... out at 32768. When the ROM does the initialisation, it writes ... RAM, it's not bad ROM, it's not a bad ... it's fine (as a 16K machine) and that's ...
    DEATH DEATH March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    How dificult would it be to make a rom cart - a la JetPac etc - which holds a 16k eprom or 8k eprom 8 k ram which then plugs into interface2/ram turb etc?

    Could be good for testing speccy ram.
    dekh dekh March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... , it'll have a Flash ROM chip, and some minimal logic ... connector. Since the smallest flash ROM I've found is 128k ... (paging out the ROM gives you a 16k hole in the memory ...
    Winston Winston March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... Ltd, but only lower 16K only working. Ramtop gets ... it ALWAYS initialises as a 16K machine, not 17 or ... 's fine (as a 16K machine) and that's ... fail with BASIC, but the ROM cannot initialize it properly, ... slower access to the lower 16K, so it all points ...
    Marcelo Marcelo March 2007 Hardware
  • Anybody fancy coding this?blah de blah de blah Please ignore, poting error.

    ... eprom. You can replace the ROM by making an external board ... , so that the on-board ROM never gets selected. Simple decoding ...
    Winston Winston March 2007 Development
  • Will an interface 1 work with a +2?I don't want to break anything, can I bugger up the +2 by connecting an interface 1 and microdrive to it? Are they compatible? If they are, with no…

    ... should download the later ROM and burn it to ... Ian Collier's enhanced 16K IF1 ROM and use that ...
    I got the rom image and I started searching ... seems even philip kendall's ROM site has a *broken ... * link to instructions about rom.

    I ...
    Arda Arda March 2007 Hardware
  • Will an interface 1 work with a +2?I don't want to break anything, can I bugger up the +2 by connecting an interface 1 and microdrive to it? Are they compatible? If they are, with no…

    ... really should download the later ROM and burn it to a ... download Ian Collier's enhanced 16K IF1 ROM and use that instead ... Ian Collier's Interface 1 ROM uses the so called "unused ... -CC so use of this ROM would render your computer incompatible ...
    Geoff Geoff March 2007 Hardware
  • ResiDOS v2.00 releasedI've just posted a major new release of ResiDOS, at: [URL="http://www.worldofspectrum.org/residos/"]http://www.worldofspectrum.org/residos/[/URL] T…

    ... ? Will it fit in a 16K ROM or does it still need ... IDEDOS), plus 2x16K "ROM" banks (containing the Syntax ROM and the patched ...
    glancaster glancaster March 2007 Hardware
  • ResiDOS v2.00 releasedI've just posted a major new release of ResiDOS, at: [URL="http://www.worldofspectrum.org/residos/"]http://www.worldofspectrum.org/residos/[/URL] T…

    ... means having to reflash the ROM every time any ResiDOS data ... like the Am29F010 all have 16K sectors which can be reflashed ...
    Winston Winston April 2007 Hardware
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... code itself runs entirely in ROM so as to not ... holes).

    The flash ROM can also be programmed by ... that selects whether the Spectrum ROM is paged in on ... used as a general purpose ROM board, an OUT instruction ... in any of the many 16K pages (8 if using ...
    Winston Winston April 2007 Hardware
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... you could just the testing ROM I "published" (well, made available ... the lower part of the 16K, the higher part, the upper ...
    Spirantho Spirantho April 2007 Hardware
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... register, the other for the ROM bank register
    - ... or Am29F040 NOR flash ROM (any 128Kbyte to 512Kbyte ... a general purpose flash ROM board, especially to those ... as a general purpose ROM board (probably just a ... selection/loading of a 16K rom page, or copying a ...
    Winston Winston 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 " " …

    ... the differences between the cartridge rom player and the port on ... /1000s, 1 TS/1500, 4 16K packs, some tapes and dozens ...
    zxbruno zxbruno April 2007 Wanted
  • Anybody fancy coding this?blah de blah de blah Please ignore, poting error.

    ... - for example, in the lower 16K you'll write all 0s ... the inversions test (and my ROM code currently tests four inversion ...
    Winston Winston April 2007 Development
  • 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 & …

    ... /> Amazingly that loader works in 16k mode - in which i've ... anything other than the standard ROM loader used :)
    alexsut alexsut April 2007 Sinclair Miscellaneous
  • Question for Dunny re SpecOS and PC200Apologies if this has been asked before, but I only just thought of this. Could SpecOS (or a version of it) run on a PC200? You have to admit, that…

    ... tangent. The PC200 has 16k of BIOS ROM (in two 8k chips ... doubled to 32k (in two 16k chips). If an 8086 port ... be fitted in the extra 16k, that would be neat. What ... network card with this hypothetical 16k ROM, but with the PC200 that ...
    John Elliott John Elliott April 2007 Sinclair Miscellaneous
  • Is Ferranti still alive ?And if not......why should there be any restrictions on manufacturing the ULA ?

    ... just using it as a 16K ROM substitute, and an FPGA for ...
    Winston Winston May 2007 Sinclair Miscellaneous
  • 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…

    ... , lower 16K are not used and are shadowed by ROM.
    With ... pages and up to 32 ROM pages. Any page can be ...
    Sonic Sonic May 2007 Hardware
  • Spectrum Diagnostics Board - 25th Anniversary projectWell, I said I'd try and get something online about this by today, and I have indeed done so. This web page still needs finishing off (in particular,…

    ... program it with a testing ROM!) The flash tool allows the ... of any of the 32 16k pages, as well as being ...
    Winston Winston May 2007 Hardware
  • InterfaceHi I'm building a spectrum emulator. I've tried to build it as modular as possible, for example I have a zx class that have input and output devices…

    General ROM paging is all done in ... chip in a Spectrum (both ROM and RAM) has what are ... the ROM chip (for addresses < 16384) or the lower 16K bank ... />
    Concentrating purely on the ROM, when the Spectrum reads from ...
    Winston Winston 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 …

    ... owner replaced the original ROM on this cartridge with ... possibility of using a 23128 ROM or a 27128 EPROM ... E (eprom) or R (rom) connection at those two points ... chip; on a 23128 ROM this is a second chip ... to write into the lower 16k ROM area.

    Here ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Hardware
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