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  • Beta versions of Fuse 0.6.2 and libspectrum 0.2.1 availableDear all, The Fuse team is pleased to announce the release of a beta version of the upcoming 0.6.2 release of Fuse and the Fuse utilities, as well a…

    ... number of tstates after an interrupt that the main display starts ... anyone has a handy test program I can run on my ...
    Fred Fred January 2004 Emulators
  • VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…

    ... at all and the entire program was in assembly? Would HALT ... im2 mode and write an interrupt routine that simply does an ... around 19 cycles following the interrupt.

    A previous code ... variable to see if an interrupt occurs. This depends on the ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…

    ... as you're not in interrupt mode 1? Otherwise, various system ... , which could screw up your program?

    See - I'm ...
    monty.mole monty.mole May 2004 Development
  • Finishing my Ragnar game...Hi all, Way back then, in my youth, I worked on a game for the Speccy called "Ragnar", which was a 3d isometric style mcoded game written from scrat…

    ... game loop taking the frame interrupt in consideration. For a Coupe ... each game loop - when a counter reached zero, a certain subroutine ... /> [quote](and 4) perhaps also interrupt handling in general?)[/quote]
    ekoman ekoman July 2004 Development
  • Early Speccy Memories ThreadHiya. Right Ok. I want to start a thread going here and I want to know all about your early days with speccys. I am 31 now. I got involved with spec…

    ... in the middle of a program - this ruining the signal! So ... write on C90s the tape counter values where everything started. I ...
    Gwyn Gwyn July 2004 Games
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... through PIO, that uses different interrupt service routines. The PIO ... can tell that the interrupt routine has ended upon ... for ending the ULA generated interrupt by RETI.
    [/quote ... (serial ports) and CTC (counter/timer) peripheral chips manufactured by ...
    Alcoholics Anonymous Alcoholics Anonymous July 2004 Development
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …

    ... result
    ; for this program
    .byte 0 ;R ... br /> ; entry point into the program
    .anchor(32768)
    ... br />
    ; the main program simply repeatedly fills and clears ... repeat


    ; interrupt routine
    ; it does the ...
    Erlstoned Erlstoned August 2004 Development
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... some method of timing the interrupt frequency - and handily enough, each ... a counter, and when you reach 69888 then cause your interrupt and ...
    Dunny Dunny September 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... have it as a dedicated counter rather than using memory location ... for a period after the interrupt so that the TV raster ...
    Alcoholics Anonymous Alcoholics Anonymous September 2004 Development
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... it in your program. If you have a counter which only handles ... byte.

    In this program the result is -17

    In this program the result is 239
    Dr BEEP Dr BEEP September 2004 Development
  • TZXs speed loadingIs it possible to write a program that will play back tzx files at double speed, the way that TAPER can play back z80 files at 3000 baud? The Z802TZX…

    ... it possible to write a program that will play back tzx ... shortcut the loop, modifying the counter to suit - thus saving a ...
    Dunny Dunny September 2004 Sinclair Miscellaneous
  • Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…

    ... -2004"
    ;"This small simple program"
    ;"Print to the ZX ... />
    curfornextvalue =j
    ;"store counter in var j used as ... /> curfornextvalue =k
    ;"save loop counter value used to set the ...
    Steve(spt) Steve(spt) October 2004 Emulators
  • How to hack game to find pokes for infinity life and others!Hello! Maybe this has been discused before, but I coulden't find anything via search. My question is this. How do you find the pokes for infinity …

    ... to use courtesy of a program I wrote to reside in ... simple to find the lives counter (or whatever it is you ...
    robert@fm robert@fm November 2004 Games
  • How to hack game to find pokes for infinity life and others!Hello! Maybe this has been discused before, but I coulden't find anything via search. My question is this. How do you find the pokes for infinity …

    ... you can use the multiface program Lifeguard.

    [/quote]
    counter, and those which serve other ...
    robert@fm robert@fm November 2004 Games
  • Idea for a new feature to compliment a debugger in an emulatorI had an idea for an emulator feature yesterday. Don't recall having seen this idea before, but I'm sure you'll correct me if it has. :) In that cas…

    ... of where and what the program is doing, what it ... start it while the program is executing some sort ... ](example)[/I] that the program is reading data from 25000 ... word was used as a counter instead of a byte, ... should be easy enough to program I should think?
    ...
    mel the bell mel the bell December 2004 Emulators
  • Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?

    ... as yet.

    The program works using a timed loop ... from executing before the next interrupt occurs. I suppose it's ... is enough to break this program :(
    Woody Woody March 2005 Development
  • The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…

    ... /> (13) from table as counter. The program looked like this after some ... IS!

    The MC-program is now also 32 Bytes ... )
    [/code]

    The program sends 2 bytes extra to ...
    Dr BEEP Dr BEEP August 2005 Development
  • Epson do it again!Just found a program which fixes "dead" epson printers, after x amount of uses the epsons have a built in couter which says the printer has failed an…

    ... as soon as the internal counter at least on the C44 ... there it has a protection counter which stops the printers ... br />
    Before using the program above both lights blinked and ... after using the program and resetting the protection counter, lo and behold ...
    Mort! Mort! August 2005 Chit chat
  • Ever find something on tape that should not be there?I remember this from my school days,its an absolute classic this!,i borrowed a game from a school friend at that time(i cannot remember which game)bu…

    ... them along with the tape counter numbers. So to load each ... fast forward to the appropriate counter and load the game.
    program after another. Well guess what ... reason he had mentioned the counter readins - so that he could ...
    Arjun Arjun November 2005 Games
  • Vindicator Bug?I've been trying to complete Vindicator and have come across a bug on level 1. According to the Tip Shop the anagram to Enter is JONATHAN DUNN (whic…

    ... component and a card(?), a counter should be increased. As you ... the magic 24 which the program is waiting for and then ... one.

    Unfortunately, the program only adds the cards up ...
    Mr. Anonymous Mr. Anonymous December 2005 Games
  • Funniest Spectrum-related memorySeeing the emulated loading screen on the Dreamcast speccy emulator reminded me of something from many moons ago. I was in the local computer shop w…

    ... out that I need a program called an assembler to do ... an asm listing in YS Program Pitstop. Thankfully it all became ... bars appeared briefly then the program ended. At the time I ... should be run in an interrupt. Ho-hum.
    icabod icabod January 2006 Sinclair Miscellaneous
  • Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …

    ... 't noticed is that an interrupt is about to occur (the ... see from your pic). The program is in IM2 mode, as ... I=47665/256=186. The interrupt vector table will be located ... the byte is 'X', the interrupt will jump to address X ...
    Alcoholics Anonymous Alcoholics Anonymous March 2006 Sinclair Basic
  • Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …

    ... be very simple. Then the interrupt service routine for up to ... something for really fast realtime interrupt response... who knows.
    < ... jumped to following an NMI interrupt. The hw would make ... br />
    2. The crashing program has buggered up the table ...
    Alcoholics Anonymous Alcoholics Anonymous March 2006 Sinclair Basic
  • How can I tell if 128k in codeIs there an easy way in code to check if the Spectrum has 128k, rather than 48k so I can display a message "Must have 128k" etc

    ... suggests).
    I have a program written by Vision of TMG ... this, set up an IM2 interrupt which does, something like XOR ...
    icabod icabod March 2006 Development
  • Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…

    ... /> * If you load a BASIC program/game in 128K mode, then ... (although it lacks a tape counter). When I had a +2 ... keys, if you want to program in 48K BASIC).

    ewgf ewgf March 2006 Hardware
  • z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…

    ... 20 high, for example, your program will forever be dealing in ... the program to update the AY, whether that be in an interrupt ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ...
    This is the test program's implicit memory allocation policy ... which means when this interrupt occurs code at address 0x38 ... 16384 bytes available to our program (z88dk compiles programs starting at ... .

    This program has 10 sprites total, so ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... deal with an NMI interrupt. The NMI interrupt is not intended for ... its expiry indicates the main program has crashed). In the Spectrum ... would dump the currently executing program to tape or disk. For ... pretend this is an SP1 program that was compiled using the ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
<1…11121314151617…34>

Latest Posts

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HitBox

Word Docs Hits
program 21.8K 31.9K
counter 2.9K 4.2K
interrupt 2.6K 4.5K

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