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<1…19202122232425…34>
  • Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…

    ... models in combination with other external hardware on zx bus can ... with IM2 table in zx rom (I=#3B,etc...)
    velesoft velesoft May 2013 Hardware
  • Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…

    ... models in combination with other external hardware on zx bus can ... with IM2 table in zx rom (I=#3B,etc...)[/QUOTE]
    Dan Antohi Dan Antohi May 2013 Hardware
  • Sinclair +2a Why!?!One thing I've always wondered and whilst going though my collection today the question re-emerged in my mind. Why the Spectrum +2a? What I mean by …

    ... board, you've got no external floppy connector and you won ... disc controller interface (and AMSDOS ROM) for a tape-based CPC ...
    AndyC AndyC June 2013 Sinclair Miscellaneous
  • Testing a +2I recently picked up a non functioning Spectrum +2 Grey (Issue 3 board?), and am just beginning to go through and see what needs to be done to it. I …

    ... contacts, ULA function, Z80 function, ROM function, capacitors

    3 ... diagnostic rom (I use Paul Farrow's diag cartridge in an external ...
    bverstee bverstee June 2013 Hardware
  • Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…

    ... use standard trick with the ROM vector table and I=#39 ... to find an address in ROM, which looks like #xxFF and ... on the minute detail of ROM implementation. It also will not ... be the case when some external hardware is connected.

    introspec introspec June 2013 Development
  • Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…

    ... to load #06 into I, ROM contains #71DD at the address ... , which seems convenient enough. No external hardware that can affect the ...
    introspec introspec June 2013 Development
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... own memory connected instead ZX rom. (memory chips on both devices ... signal IORQ for all other external devices. Also memory acces for ... external devices will disables if DIVIDE ...
    velesoft velesoft July 2013 Announcements
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... contain special modified ZX128 rom (rom 0 is not compatible ... You can replace PROFI rom with ZX128 rom, or use software ... ZX128 rom), value 2 = PROFI rom, 3 = Pentagon rom, 4 = Scorpion rom. With ... select ZX128 computer type + external device and K-MOUSE are ...
    velesoft velesoft July 2013 Announcements
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... contain special modified ZX128 rom (rom 0 is not compatible ... You can replace PROFI rom with ZX128 rom, or use software ... ZX128 rom), value 2 = PROFI rom, 3 = Pentagon rom, 4 = Scorpion rom. With ... select ZX128 computer type + external device and K-MOUSE are ...
    Turrican Turrican July 2013 Announcements
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... external. Logic in CPLD after power on not connect sram but rom ...
    velesoft velesoft August 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... ]Ben

    If the ROM on the Speccy is not ...
    bverstee bverstee August 2013 Hardware
  • DivIDE black editions availableI have about 6 more DivIDE black editions ready, and will finish more this week. [B]DivIDE 57c BLACK edition including ESXDOS 0.8.5 and 1GB CF card[…

    ... this : zx rom can be replaced with external memory 8kB rom + 8kB ram ...
    velesoft velesoft August 2013 Sales
  • Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…

    ... /> ZXROMCS.oe = vcc
    ; disconnect external memory after OUT x110011x,anyvalue ... (#E7)
    ; or connect external memory if CPU read instruction ... connection is from #0000-#1FFF ROM 8kB


    /RAMCS ...
    velesoft velesoft August 2013 Hardware
  • Hardware description - BETA DISK interfaceExist more versions and clones of BETA DISK interface. Beta disk 48, beta disk 128, brasilian clones of beta disk 48, russian clones of beta disk 128…

    ... "]/IORQ'[/COLOR][/B] for all external devices connected to throught bus ... by code in TR-DOS ROM ...
    zxy zxy August 2013 Hardware
  • INTERFACE 2 - light versionSmall interface (adapter) compatible with INTERFACE 2. Contain only slot for IF2 cartridges and reset button (for rubber speccy). Not contain joystic…

    ... for use original(or compatible) ROM cartridger, or new cartridges with ... with different functionality (ZX128 rom replacement, external memory upgrade for ZX16, MB02 ...
    velesoft velesoft September 2013 Hardware
  • Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…

    ... then it allowed external ROMs. [/QUOTE]

    External ROMs? How is ... 2 and an assembler on ROM cartridge? Or a Multiface-type ...
    memrah memrah September 2013 Sinclair Miscellaneous
  • Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…

    [QUOTE=memrah;721641]External ROMs? How is that different ... 2 and an assembler on ROM cartridge? Or a Multiface-type ... had Protext and Maxam on ROM they could work together, so ...
    AndyC AndyC September 2013 Sinclair Miscellaneous
  • Interface 1bisHas anyone on here got a "Interface 1bis": [URL="https://sites.google.com/site/interface1bis/"]https://sites.google.com/site/interface1bis/[/URL] I …

    ... not actually RUN the Spectrum ROM[/B].

    Alone the ... MS Windows installation on an external hard disk.

    Not ...
    Dan Antohi Dan Antohi September 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... 32K or even 64K external ROMs using the standard ... rom emulation/replacement with external SRAM/FLASH EPROM.

    Rom ... images can be loaded to external ... sram memory and used instead ZX rom.
    velesoft velesoft October 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... rom emulation/replacement with external SRAM/FLASH EPROM.

    Rom ... images can be loaded to external ... sram memory and used instead ZX rom.
    rom 512kB. Each rom/ram page 16kB ...
    chev chev October 2013 Hardware
  • Using CD player on ZX Spectrum 128k +2AHi I have a question for you all. I have a ZX Spectrum 128k +2A, I have recently had it restored to its working state thanks to Mutant Caterpillar G…

    ... common ROM scheme.

    This explains the need for an external ...
    Alessandro Grussu Alessandro Grussu October 2013 Hardware
  • First time capacitor replacementHi, I have an Issue 2 board, that i wish to start with recapping as advised on here, as they look to be all original. (Same with V3 board, but going…

    ... a Diagnostics Board or a ROM board. See [URL="http:// ... />
    You could disable the ROM by finding resistor R33, working ... you get the normal "no ROM" pattern on screen (example picture ... failures (other than keyboard or external PSU) are either the internal ...
    1024MAK 1024MAK October 2013 Hardware
  • Want to start making AY tunes but need help!Hey everyone, I have ZX Spectrum+, a DivIDE plus, an AY Magic card, and a Kempston equivalent joystick interface (which I believe can also emulate o…

    For divIDE+ you need special esxdos flasher(installer). Or you have to reflash ROM using external programmer.
    Anyway, check first if you have correct GALs. I think RWAP can still provide what is needed, otherwise we are here to help :-)
    kpuchatek kpuchatek October 2013 Sinclair Miscellaneous
  • Using +3e ROMs without physically replacing internal ROM chips?Is there any external hardware available which can logically replace the internal ROMs of a +3 with, e.g. the +3e ROMs, *without* having to open up a…

    ... flash programming tool as a ROM. I have been known to ... device that can run an external speccy ROM, or load snapshots. The ... way when I updated the rom image because although the chips ...
    guesser guesser November 2013 Hardware
  • Video failureHi i cant find the failure of my spectrum 48k issue 4a, i thought it was ic6 or ic13 but the memory seem to have the right values. When i turn it on…

    ... upper RAM and so the ROM code will set-up the ... anything, without some form of external test device, I'd try ...
    Zorn Zorn November 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    +3e rom version for ZXMMC ports can ... ...

    This modified +3e rom with DIVMMC ports can be ... +2a/+3 models with connected external DIVMMC interface(with open jumper ... , SD driver will in +3e rom as one long block/routine ...
    velesoft velesoft November 2013 Hardware
  • 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 ...
    Zorn Zorn December 2013 Hardware
  • 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
<1…19202122232425…34>

Latest Posts

  • I am currently watching.....
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  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
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    John Elliott on April 21
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    rich_chandler on April 21
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    mel the bell on April 21
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    harriusherbartio on April 21
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  • +3 Disk drive motor
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