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  • Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …

    Just connect an I2C IO expander, they are dirt cheap and you can get another 16 IO lines.
    XorA XorA August 2012 Hardware
  • .tapein load crashes if no CLEAR performed first(!)Hi Guys, Can anyone explain the following as it has be stumped: I came across an unexpected crash today when loading in a 16K block of code at 8000…

    ... data and even potentially buffered IO - I should have thought of ...
    BloodBaz BloodBaz August 2012 Hardware
  • c64 game with helicopter.i briefly saw it at a house of a friend's friend when i was a kid. the view was top down. the scrolling was probably multi-lateral. it wasn't simpl…

    ... the game.. if you type "io" in the monitor it'll ...
    fog fog August 2012 Chit chat
  • SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]

    ...
    The Kempston Mouse uses IO ports $FADF, $FBDF and $FFDF ... The SPECTRA interface filters all IO requests for port $7FDF ... to 1 when performing an IO operation. Existing software drivers ... picture and happily coexist without IO conflicts with all current ...
    Fruitcake Fruitcake August 2012 Sinclair Miscellaneous
  • Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …

    ... well; it's only the IO requests. You'd think a ...
    Spirantho Spirantho August 2012 Hardware
  • Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …

    ... a while, but only on IO, and not affect the data ...
    Spirantho Spirantho August 2012 Hardware
  • A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …

    ... handles all the video and IO.
    The simplest method would ...
    mspec mspec September 2012 Hardware
  • Games that could be better off with a 7MHz CPUI've just reviewed Kung Fu Master for the Spectrum, as I remember it as a very poor conversion from the arcade. Then it just ocurred to me to raise t…

    ... hardware control latch (currently) at IO 0E3B...

    bit1 bit0 ...
    JeffBraine JeffBraine September 2012 Games
  • A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …

    ... handles all the video and IO.
    The simplest method would ...
    chev chev September 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... or read from an uncontended IO port during the ULA's ...
    Winston Winston September 2012 Hardware
  • Software changes for DivIDE(+) or SpectranetA couple of people have now asked me about this... With the advent of firmware which can read and write from compact flash cards, hard disks, or ove…

    ... the z88dk's new standard io library is still chugging along ...
    guesser guesser September 2012 Development
  • Edge connector breakout board/level translator boardFor a new project I'm thinking of working on (gah, too many projects...) I'm going to be making a new edge connector breakout board. Basically what …

    ... IDE connector. The remainder are IO pins from the CPLD. The ... XC95144XL (not all of the IO pins are connected for the ...
    Winston Winston October 2012 Hardware
  • Semi-Dead Spectrum - Help RequestedI have finally got my hands on my two old Spectrums - neither of which work, but ideally I hope to get both of them working again. Spectrum number o…

    ... every data/address/control/keyboard IO/power supply line etc. with ...
    Zorn Zorn October 2012 Hardware
  • Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…

    ... supervisor mode, with protected memory / IO ranges. Which would enable much ...
    RetroTechie RetroTechie November 2012 Development
  • Anyone identify this hardware?[url=http://postimage.org/image/8u4yputfv/][img]http://s9.postimage.org/8u4yputfv/P041112_13_21.jpg[/img][/url] [url=http://postimage.org/image/4z661…

    First could be some sort of IO adapter. General purpose "user port" type things.

    Second perhaps for connecting an old switched joystick to a an analogue gameport?

    Really need to see inside to tell.
    guesser guesser November 2012 Hardware
  • Sound Card AdviceMy Creative SoundBlaster Audigy 2 ZS, is a greatish sound card but its starting to cack out on me. It has an IO box that sits beside the main unit, …

    ... switched on. Given that the IO box was external it didn ...
    Scottie_uk Scottie_uk December 2012 Chit chat
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... the correct value to the IO port that writes to said ...
    1024MAK 1024MAK December 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... the correct value to the IO port that writes to said ...
    velesoft velesoft December 2012 Hardware
  • Sound Card AdviceMy Creative SoundBlaster Audigy 2 ZS, is a greatish sound card but its starting to cack out on me. It has an IO box that sits beside the main unit, …

    ... pair), Two pairs of midi io sockets, and four line outs ...
    Scottie_uk Scottie_uk December 2012 Chit chat
  • spectrum+2 (grey) - no sound from tape deckit was working up to 5 minutes ago, but now there is no sound from the tape drive. everything is moving and nothing seems out of place. any ideas? a…

    ... rubber cube sitting near the IO slot. on the under side ...
    freddyhard freddyhard December 2012 Hardware
  • Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…

    ... and 3.3v for Vcc(io), so you need to factor ...
    Winston Winston January 2013 Hardware
  • Configuration of FPGA coresHi all! Lately a lot of features have been added to the V6Z80p Spectrum core. Most of them are handled (clearly) using ports. Some examples: ULA+, Ti…

    The wording on the FAQ wiki could be a little clearer especially with regards to the the 128 available ports for ULA plugins and the differentiation between IO and memory decoding. I've requested a wiki account, and will perform some embellishment!
    csmith csmith January 2013 Hardware
  • Beta testing FuseHello everyone, We are preparing Fuse for a new release soon and would appreciate help in testing that all the new features and all the old features …

    ... him!
    [url]http://gfx.io/switching.html[/url]
    48K 48K January 2013 Announcements
  • Your favourite ZX Spectrum tunes?Ok, this is a bit of a plug for my podcast but it's also a genuine question as I'd love a response on this. [IMG]http://img.photobucket.com/albums/v…

    ... . That really makes my teeth itch that one :)
    GeeKay GeeKay January 2013 Games
  • Scuffed and dull car headlightJust been looking at my car and theres one thing that really bugs me, basically when I bought it second hand it had previously been involved in an ac…

    ... imagine that'll be an itch. Itch removes scratch and scratch removes ... itch - bit like a really plop ...
    STeaM STeaM January 2013 Chit chat
  • Donkey Kong ReloadedHi peeps On Youtube someone has just made a video response to my best homebrew of 2011 vid,it is a game called Donkey Kong reloaded that they are pro…

    Ale
    hai provato ad aprire il file da AGD? in effetti ? quello che faccio io per giocarci...
    gabriele amore gabriele amore January 2013 Games
  • Donkey Kong ReloadedHi peeps On Youtube someone has just made a video response to my best homebrew of 2011 vid,it is a game called Donkey Kong reloaded that they are pro…

    [QUOTE=gabriele amore;679132]Ale
    hai provato ad aprire il file da AGD? in effetti ? quello che faccio io per giocarci...[/QUOTE]

    ok ho detto una minc..ata!
    gabriele amore gabriele amore January 2013 Games
  • Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…

    ... part of the memory or IO space. So long as you ...
    Matt_B Matt_B February 2013 Sinclair Miscellaneous
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... ROM & RAM when an IO request is written to port ...
    zub zub February 2013 Hardware
  • maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …

    ... /> 3) hardware implementation

    IO Register swith maybe not the ... for address 0x100-0x103 and IO port 0x100.
    So, you ... then send, say 1, to IO port 0x100 and bank switcher ... /> of ram. And using different IO value you can choose where ...
    ArtemKuchin ArtemKuchin February 2013 Hardware
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