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  • Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…

    ... message, preferably one synced with interrupt :)

    [QUOTE]I've ...
    Patrik Rak Patrik Rak October 2007 Emulators
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... merged. They are there to interrupt checking when a valid move ...
    Digital Prawn Digital Prawn October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... seems that my POKE to interrupt checking now depends on "m ...
    Digital Prawn Digital Prawn October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... move, it's OK to interrupt it and ask for a ...
    Einar Saukas Einar Saukas October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... move, it's OK to interrupt it and ask for a ...
    Digital Prawn Digital Prawn October 2007 Development
  • IM instruction - danger Will Robinson!!! :)Here's something I've wondered about for years: On page 102 of "Mastering Machine Code on your Zx Spectrum" by Toni Baker, there's an instruction li…

    It sets the interrupt mode.
    There are three ... 1 (normal usage), on each interrupt (every 20ms) a RST38 instruction ... runs the standard ZX ROM interrupt routines.

    in IM ... 2, when an interrupt occurs the CPU looks at ...
    icabod icabod October 2007 Development
  • New Game: BeTiled! by CEZGSIt's out: [url]http://cezgs.computeremuzone.com/eng/card.php?id=19[/url]

    ... perfect. It shuts off the interrupt routine that decreases the timer ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Games
  • IM instruction - danger Will Robinson!!! :)Here's something I've wondered about for years: On page 102 of "Mastering Machine Code on your Zx Spectrum" by Toni Baker, there's an instruction li…

    ... enough to try programming an interrupt "clock" to run during a ...
    BloodBaz BloodBaz October 2007 Development
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... not perfect, and fixing the interrupt time has caused trouble with ...
    Metalbrain Metalbrain October 2007 Emulators
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... move then refuse PASS and interrupt loop
    NEXT i:
    Einar Saukas Einar Saukas October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... move then refuse PASS and interrupt loop
    NEXT i:
    Digital Prawn Digital Prawn October 2007 Development
  • Input/Output on Edge ConnectorI would like to sense a pulse on the data bus via the edge connector, i.e. on or off. How do you decide what port it is on? I would also like to send…

    ... it, such as raising an interrupt, or setting a flip flop ...
    Winston Winston October 2007 Hardware
  • Input/Output on Edge ConnectorI would like to sense a pulse on the data bus via the edge connector, i.e. on or off. How do you decide what port it is on? I would also like to send…

    Maskable interrupt acknowledge.There's a special ... pay attention to M1 then interrupt acknowledges can do really strange ...
    Winston Winston October 2007 Hardware
  • Input/Output on Edge ConnectorI would like to sense a pulse on the data bus via the edge connector, i.e. on or off. How do you decide what port it is on? I would also like to send…

    ... ?[/QUOTE]

    In an interrupt acknowledge cycle. As long as ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Hardware
  • Best loading on a gameFor me, it has to be Technician Ted, with all those TT's walking across the screen. 2nd comes Skooldaze, only because I spent many MANY of my evenin…

    Although not a game, tape version of MDA by Busy Soft had a loader which synchronized itself with interrupt to do the "show the message when reset is pressed" trick while loading.
    Patrik Rak Patrik Rak October 2007 Games
  • Best loading on a gameFor me, it has to be Technician Ted, with all those TT's walking across the screen. 2nd comes Skooldaze, only because I spent many MANY of my evenin…

    ... loader which synchronized itself with interrupt to do the "show the ...
    Tom-Cat Tom-Cat October 2007 Games
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    ... and you switch them every interrupt to get composite picture where ...
    Ralf Ralf October 2007 Emulators
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    ... and you switch them every interrupt to get composite picture where ...
    BloodBaz BloodBaz October 2007 Emulators
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    ... and you switch them every interrupt to get composite picture where ...
    Jon Needle Jon Needle October 2007 Emulators
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    ... synced to 50 Hz interrupt and the interrupt is synced to 50 ...
    omega omega October 2007 Emulators
  • Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…

    ... other activity (except for an INTerrupt ACKnowledge cycle) it remains inactive ...
    Marcelo Marcelo October 2007 Hardware
  • Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…

    ... code routine inside the 50Hz interrupt handler. I can see this ... would be useful to implement interrupt driven sprite routines.
    < ... demonstrating that the routine is interrupt driven.

    The ... the end of the user interrupt routine has been POKE'd ...
    Digital Prawn Digital Prawn October 2007 Games
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    [quote=zub;223929]If you could get Fuse for Windows to sync to 50 Hz, then be my guest! :)[/quote]
    What about syncing it to "any" monitor interrupt? OK, emulation will be faster. I can live with that.
    omega omega October 2007 Emulators
  • 50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…

    ... syncing it to "any" monitor interrupt? OK, emulation will be faster ...
    zub zub October 2007 Emulators
  • Group Order of Internal/External Kempston Turbo InterfacesI have contact Velesoft ([url]http://velesoft.speccy.cz/kmturbo-cz.htm[/url]) about the production of internal or external kempston turbo interfaces …

    ... :
    -floating bus stabilisation ( return interrupt vector #FF to data-bus ...
    velesoft velesoft October 2007 Hardware
  • ANN: SpecEmu 2.5Oh well, can't say I'm particularly proud of this, but I am bored with it :p So.... New features: * Currah &#181;Speech emulation (with various pla…

    Thanks! SpecEmu it is my favorite emulator.

    Could you incorporate monitor sync with ZX interrupt (some day)?
    omega omega November 2007 Emulators
  • To Winston , diag-interface.Hello to all, first, sorry for my english i'm from spain and my english is very poor. Wiston, thank you very much for your great work "diag-interface…

    Hmmm. Can you video the entire test sequence (it should continue to do all 3 memory tests), and if possible a video of the screen when it does the ROM CRC/ULA interrupt test?
    Winston Winston November 2007 Hardware
  • ANN: SpecEmu 2.5Oh well, can't say I'm particularly proud of this, but I am bored with it :p So.... New features: * Currah &#181;Speech emulation (with various pla…

    [quote=omega;224569]Could you incorporate monitor sync with ZX interrupt (some day)?[/quote]

    Well, it's pretty much the end of the road as an end-user emulator.
    Woody Woody November 2007 Emulators
  • How does the Z80 communicate with hardware?How does the Spectrum (or Z80) interact with other hardware devices? I think devices can communicate with the CPU through interrupts, but how can the…

    ... IN and OUT instructions. An interrupt would just inform the Spectrum ... disk interface might raise an interrupt when it's ready to ...
    zub zub November 2007 Development
  • ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…

    ... A14 low - this is the interrupt handler kicking in and I ... just by chance that the interrupt handler does access the lower ...
    csmith csmith November 2007 Development
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