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<1…891011121314…34>
  • Address bus contents (i.e. PC) during execution of HALTI'm wondering if anyone can tell me what's placed on the address bus during execution of HALT, beyond the initial M1 cycle. The Z80 user manual state…

    ... [I]before[/I] the interrupt is acknowledged, and that the ... the return address of the interrupt handler. Firstly, if the ... seem simpler in the interrupt acknowledgement not to deal ...
    For NMI and maskable interrupt acknowledgement, it contains:

    zub zub March 2014 Hardware
  • Making AY musicCan anyone recommend an AY music making package that is as user friendly as Beepola is for the speccy beeper? And do they make their own interrupt r…

    ... do they make their own interrupt routine/is it easy to ...
    R-Tape R-Tape April 2014 Development
  • 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 …

    ... Key number ( 0-38 ) or 39, for ?no key?
    Bit ...
    Dan Antohi Dan Antohi April 2014 Hardware
  • 3D Games in SpecBAS!Not really :) Actually, yes - here's a type-in for you: MontyMole's "Crap Castle Master" [code] ZXASCII AUTO -1 PROG CrapCastleMaster 1 REM Crap Ca…

    Not really :)

    Actually, yes - here's a type-in for you: MontyMole's "Crap Castle Master"

    [code]
    ZXASCII
    AUTO -1
    PROG CrapCastleMaster
    1 REM Crap Castle Master by A Lycett adapted to SpecBAS
    5 WINDOW ...
    Dunny Dunny May 2014 Sinclair Basic
  • New version Emulator ZEsarUX-1.0Hi I have uploaded a new version of my Spectrum/ZX80/ZX81 emulator. This is a major stable version, with real timing for all the models and with hi-…

    ... in border, colour ula delay, interrupt starts at video display (not ...
    chernandezba chernandezba May 2014 Emulators
  • Currah ?Speech channelIt seems to me that it would be nice to be able to send words to the ?Speech with PRINT #5;"Speak English to me, Jimmy" or some such. There really i…

    ... /> defb 11, 23, 9, 41, 39, 55, 17, 15, 35, 46 ...
    chev chev June 2014 Development
  • Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …

    ... : Repton dying frame 4
    39: Repton dying frame 5 3A ...
    geraldholdsworth geraldholdsworth June 2014 Games
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…

    ... instructions there is also NMI interrupt which /when triggered/ jumps to ...
    tstih tstih July 2014 Development
  • Scene+ (cassettes for sale from the Spectrum User Club from Austria and Germany)I am selling some of the issues in cassette of the Austrian Spectrum Club (also German, I think!), most of them are quite old and hard to see. They i…

    ... 2000 (38 ), May-June 2000 (39), July-August 2000 (40), November ...
    Ivanzx Ivanzx July 2014 Sales
  • Less MIA - Judge Dredd (1990)(Virgin Games)[+3 disk]Hi All, I don't see this is WOS archive ... so .. box top [IMG]http://forest.no-ip.org/wos/jd/box_top.jpg[/IMG] [IMG]http://forest.no-ip.org/wos/jd…

    ... : (have some text at track 39 .. THIS IS NOT A DREDD ...
    gorski gorski July 2014 MIA/STP/SDP
  • Xbox Gold - great offers this weekJust got Dishonored for xbox for free today because I'm an xbox gold subscriber. I was actually seriously considering buying this game soon, so gett…

    ... bought GTA 4 for ?5.39 and the LA Noire Pass ...
    BigBadMick BigBadMick August 2014 Chit chat
  • TommyGun loading problemHello: I'm developing an assembler game for ZX 48K using TommyGun. I'm only use Font editor and code editor. From a few day ago, when I open a Proj…

    ... 'm using TommyGun 0.9.39 in a i3 with 6Gb ...
    duefectu duefectu September 2014 Development
  • MIA: Airline SoftwareAs discussed in another thread, I was recently reunited with a box containing most (not all) of my original cassettes. Thanks to the advice and help …

    ... /> 07. Hex Package
    08. Interrupt Driven Clock
    09. Message ...
    sj_howlett sj_howlett October 2014 MIA/STP/SDP
  • Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…

    ... ).

    It could be interrupt related, how do interrupts occur ...
    Korinel Korinel October 2014 Hardware
  • Game Adverts/Inlay Covers for Halloween PostersI have been decorating my house ready for a Halloween party on Saturday and some of the decorations I've hung up are copies of Horror/Sci-fi B-Movie …

    ... Advert for Bride Of Frankenstein (39 Steps), are there any other ...
    Nick Nick October 2014 Games
  • Soundex routineIn an idle 5 minutes I wrote a short routine to calculate Soundex codes using the algorithm described here: [url]http://en.wikipedia.org/wiki/Sounde…

    In an idle 5 minutes I wrote a short routine to calculate Soundex codes using the algorithm described here:

    [url]http://en.wikipedia.org/wiki/Soundex#American_Soundex[/url]

    It gives the correct result for all of the examples on ...
    Battle Bunny Battle Bunny November 2014 Sinclair Basic
  • HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…

    ... again until a reset or interrupt.

    if halt is ... 4 ts to handle the interrupt?

    I mean if ... at cycle 5, and if interrupt triggered at cycle 6, cpu ... will not jump to interrupt until cycle 9.

    Arda Arda February 2015 Development
  • Playing AY music on the SpeccyCan anyone help with playing AY ripped music on the Speccy? So, let's say I want to play some ripped AY music, such as: [url]ftp://ftp.worldofspect…

    ... =0
    INIT=51500
    INTERRUPT=51802
    HiReg=0
    badgyre badgyre February 2015 Development
  • Scart 128 toastrack tip (powered scart)<br>It you have a toastrack you may like to know that you can create a powered cable ( +5v to the pin 16 on the scart) with out taking it from the sp…

    It you have a toastrack you may like to know that you can create a powered cable ( +5v to the pin 16 on the scart) with out taking it from the speccy, or modding you speccy .


    Most LED TVs (well the ones I have, Samsung and Logik) have ...
    Steve(spt) Steve(spt) May 2015 Hardware
  • NEW "SH*T GAME TIME" VIDEO - RENEGADE IIIHi guys, god it's good to get these forums back even though I'm not sure about the new look but hey I'm happy.<br><br>Anyway, just wanted to let you …

    Hi guys, god it's good to get these forums back even though I'm not sure about the new look but hey I'm happy.

    Anyway, just wanted to let you know the next entry in my "S**t Game Time" section is now up and live to watch, this time I rate ...
    ZEUS ZEUS May 2015 Announcements
  • Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…

    Hi Folks,
    I have seen the odd issue 3 and 3b’s with added components
    to the power circuit on these machines, an extra BA157?  and 22uf (?) Cap.

    I think Issues 4’s and onwards seem to have these extra parts
    as part of the ...
    Steve(spt) Steve(spt) June 2015 Hardware
  • Problems with AY sound. Experts needed. :-)<div><span style="font-family: Arial, Verdana; font-size: 13.3333330154419px; line-height: normal;">I need to play some AY sound effects, so I've bee…

    ... some changes to not use interrupt or have self-modifying code ...
    Sokurah Sokurah June 2015 Development
  • This heat ...We've had a couple of near record-breaking days over here, 39 degrees at one point, and I've heard it's almost this hot in some parts of the UK, too.…

    ... record-breaking days over here, 39 degrees at one point, and ...
    XTM of TMG XTM of TMG July 2015 Chit chat
  • Odd joystick interface / startup behaviourI was experimenting with setting up a machine to run [i]Bomb Munchies[/i] at the weekend and was surprised by a particular condition that caused my +…

    ... , or OUT commands or odd interrupt states that may trigger a ...
    joefish joefish August 2015 Hardware
  • Emulator support to paste textIs there any emulator that supports pasting text ? Something like: - for every ZX frame (just after interrupt) "insert" a new char (force keybo…

    ... every ZX frame (just after interrupt) "insert" a new char (force ...
    RMartins RMartins August 2015 Emulators
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... /> delay0 halt ; wait for an interrupt.
    djnz delay0 ; loop.
    antonyjones101 antonyjones101 September 2015 Development
  • Help with Spectrum +2 or 128 (AY sound test) Hello, could you help me with something? It's like some "scientific experiments" with the [b]AY-3-8910[/b] / AY-3-8912 chips. I've bought on …

    ... ://image.noelshack.com/fichiers/2015/39/1442786815-ym-ay-comparaison-02 ...
    farvardin farvardin September 2015 Hardware
  • Power issues on a 6A 48 K SpectrumHello all! I decided to take another look at my 6A Spectrum that I broke via a bad joystick adapter, I’ve removed the bottom 16K ram and replaced…

    ... /> +5 1.1
    -5 39.4
    0 0
    Korinel Korinel November 2015 Hardware
  • Elite - Ship Boarded by PIRATES!Yesterday I sat down behind the debugger and decided to work out what causes the "Ship Boarded by PIRATES!" event that can sometimes, very rarely, ha…

    ... 're in.

    0.39% likelihood in Corporate States and ...
    Ersh Ersh February 2016 Games
<1…891011121314…34>

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