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Search Again :: Adv Search 1000 results in 0.012s
<1…20212223242526…34>
  • Black Screen Spectrum 48kWas working ok, it came to me in a Fuller FDS keyboard, I had a nose inside and found a floating power lead connected to the keyboard, I removed that…

    ... in the absence of an external test device, it'll probably ... upper RAM and so the ROM code will set-up the ...
    OttO OttO December 2013 Hardware
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... br /> [CODE]0x0000 ROM ROM ROM ROM RAM RAM RAM RAM
    ROM and RAM selection
    Bit 3 is external ... /> Bit 4 is external memory control for 0x4000 ... /> Bit 5 is external memory control for 0x8000 ...
    1024MAK 1024MAK January 2014 Hardware
  • +3 upgrades?Hi this is my first post on becoming a member of this forum and I'm hopeful and excited about some of the hardware I have found. Hi I found my old …

    ... . There is no need for external memory chips because all the ... devices. They have their own ROM, and some static RAM, which ... " over the speccy's internal ROM. This, and the logic to ...
    guesser guesser February 2014 Hardware
  • +3 upgrades?Hi this is my first post on becoming a member of this forum and I'm hopeful and excited about some of the hardware I have found. Hi I found my old …

    ... 5e upgrade or the new external disk drive.

    I ... consisting of IDE board, +3e ROM set, a short IDE cable ...
    The_Bert The_Bert February 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... writes it listens for $2nnn ROM writes? I guess its extra ... someone make up some simulated external ULA+ boards and make it ... feature to map it over ROM instead of RAM?
    joefish joefish April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... this was mapped into the ROM address space, the "new" RAM ... with 128k speccys. and that 'external ula board' can have also ... ula shows vram 0 the external ula would show vram 1 ... 's reads of vram on external module.
    ub880d ub880d April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... presume, become contended - would the external ULA/RAM setup be able ... you the contents of the ROM. Could read contention be avoided ... , such that the ROM routines still operate at normal ... />
    If the Spectrum's ROM routines were to slow right ...
    joefish joefish April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... you should then avoid calling ROM routines. The main thing would ... be that on startup, the ROM routines can use the normal ... if you were using an external RAM and ULA.
    joefish joefish April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... building this sort of advanced external gadgetry, but I can't ... at developing one of these external memory-skimming video-generators into ... memory mapping down over the ROM (maybe using a hardware jumper ...
    joefish joefish April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... for sure, but would an external video device even work on ... -screen and mapped over the ROM; then, like SPECTRA, it would ... a way to add an external power supply if you get ...
    joefish joefish April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... for sure, but would an external video device even work on ... Winston was considering building an external ULAplus for the Amstrad machines ... -screen and mapped over the ROM; then, like SPECTRA, it would ... a way to add an external power supply if you get ...
    chev chev April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... state that support for an external keyboard is an additional feature ... of the interface?s BASIC ROM reads port #DF, and if ...
    Dan Antohi Dan Antohi April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... br /> ; Entry point to shadow ROM for tape
    ; operations, with ... pressed
    ; *
    ; External keyboard input routine
    ;
    Dan Antohi Dan Antohi April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... /> ; Return to the BASIC ROM
    ;
    ;0092 ... br /> ; *
    ; External keyboard input routine
    ;
    Dan Antohi Dan Antohi April 2014 Hardware
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... see, I am doing an external so no shadow ram, all ... -contend.
    Have to modify rom to use original AY. no ...
    superfo superfo May 2014 Hardware
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... see, I am doing an external so no shadow ram, all ... -contend.
    Have to modify rom to use original AY. no ... calls the AY via the ROM, it would probably be simpler ...
    chev chev May 2014 Hardware
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... see, I am doing an external so no shadow ram, all ... -contend.
    Have to modify rom to use original AY. no ...
    superfo superfo May 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... to intercept reads to the ROM address space, and treat ... multicolour screens mapped across the ROM and lower 16K address spaces ... . (That the ROM occasionally writes to itself is ... by not using ROM routines. But note that this external video RAM ...
    retrogod retrogod May 2014 Hardware
  • How to run games from mp3 player to a real 48K machine?Hi! I would like to test the homebrew games that was "released" in 2013. As far as I know there haven't been made any real tapes for these games so …

    ... any Spectrum by using an external reader and some sort of ... this won't require any external amplification;
    [*]You can use ... tapes recorded with the ordinary ROM loading scheme only).
    [/LIST ...
    Alessandro Grussu Alessandro Grussu May 2014 Emulators
  • HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …

    ... are highly desirable in an external video card. (Other features of ... the $0000-$3FFF range (the ROM) instead of $4000-$7FFF would ... device re-mapped to the ROM area would no longer respond ...
    joefish joefish May 2014 Hardware
  • Sinclair 128k available?Hello there, Spectrum fans! Let me introduce myself. I am from Russia, my name is Dimitri. In the 90-s I was working for a firm producing ZX Spectru…

    ... also easy to mod for external cassette input.[/QUOTE]

    ROM. In the original you don ...
    chev chev May 2014 Hardware
  • Chloe 280SEHi all, Could somebody tell me how far this project is to being complete? [url]https://github.com/cheveron/sebasic4/wiki/Chloe-280SE[/url] Im ver…

    ... , the ZX-Uno has an external GPIO port so it is ... /> Essentially any call to the ROM math functions would execute a ... that doesn't use the ROM math would run at the ...
    chev chev May 2014 Development
  • Best 128k Speccy?Hi Which 128k Spectrum is the best from the point of view of the operating system, hardware design etc. Reason I'm asking is that I read on here th…

    ... (because you can have dual external 3.5" drives with a ... . These are the original 48 ROM and patched version of the ...
    chev chev June 2014 Hardware
  • Best 128k Speccy?Hi Which 128k Spectrum is the best from the point of view of the operating system, hardware design etc. Reason I'm asking is that I read on here th…

    ... , and by changes in the ROM. Some peripherals also won't ... % compability is achievable with a ROM change), plus they're fairly ... by the addition of an external tape input (should be some ...
    balford balford June 2014 Hardware
  • MISSING M1 LINE ON +48????I was posting questions about my DIVMMC enjoy not working on one of my +48`s and have now got round to testing if its cpu related.Trouble is the one …

    ... have it's own ROM (or EEPROM, Flash ROM or EPROM). In ... the existing Sinclair BASIC, an external device may use the Z80 ... then switch it's own ROM into the memory map of ... time switching out the Sinclair ROM.

    For some Z80 ...
    1024MAK 1024MAK July 2014 Hardware
  • Hardware with ULAplus supportFollowing on from the emulators thread I thought it might be worth listing the hardware that I know of that supports ULAplus. I know there's at least…

    ... .php/SpectraDVI"]SpectraDVI[/url] FPGA external DVI interface
    [url="http ... /index.html"]Clash Basher[/url] external video interface

    [b ... ="http://www.nedopc.com/zxevo/rom/zxevo_firmware_update_eng.pdf"]ZX-Evo[/url ...
    chev chev July 2014 Hardware
  • Hardware with ULAplus supportFollowing on from the emulators thread I thought it might be worth listing the hardware that I know of that supports ULAplus. I know there's at least…

    ... .php/SpectraDVI"]SpectraDVI[/url] FPGA external DVI interface
    [url="http ... /index.html"]Clash Basher[/url] external video interface

    [b ... ="http://www.nedopc.com/zxevo/rom/zxevo_firmware_update_eng.pdf"]ZX-Evo[/url ...
    chev chev September 2014 Hardware
  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... is exported "asm_atol" and several external functions are called "l_eat_ws, etc ... able to assign code to ROM, initialized data to a DATA ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Emulators
  • Playing MP3 backups/own software on +2/+2A/B ??Hey all quick question... Is it possible to use one of these on a +2 [IMG]http://www.stereo2go.com/fileSendAction/fcType/0/fcOid/296137596284666194…

    ... /> You can either use an external reader or a PC as ... &postcount=2"]use an external amplification source like a simple ... with data recorded with the ROM standard loader only.
    Alessandro Grussu Alessandro Grussu September 2014 Sinclair Miscellaneous
  • Please explain Spectrum FPGA-clones to meI've been using the great ZXDS-emulator on the DS XL so far, which is great. But I kinda missed toying around with hardware. I've tried bidding on a …

    ... simulator tries to duplicate the external behavior of the device.
    ROM using a GAL or CPLD ... and data lines as the ROM. So it is emulation, not ...
    Tuukka Tuukka October 2014 Hardware
<1…20212223242526…34>

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