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<1…17181920212223…34>
  • Z80 Emulator Source?Found a link to this on comp.sys.amstrad.8bit. i havent been with the discussion long but supposedly this is the source for a Z80 emulator. Forgive m…

    ... 's the main opcode dispatch loop of a Z80 emulator. However ...
    Philip Kendall Philip Kendall August 2003 Emulators
  • I compiled some ol' BASIC gamesI made them when I was 12-13. They are in Spanish, but most of them are self-explanatory. Please take your time and download'em from [url="http://us…

    ... use 'IN' commands instead of INKEY$)
    Alcoholics Anonymous Alcoholics Anonymous September 2003 Development
  • Sync-buzzer, interrupts and general confusionBeen wittering on about this in the Misc group, but thought it was best discussed here. Basically been trying to recreate the Sid-Sound effect from A…

    ... ' register in the main program loop accordingly.

    Just some ...
    Alcoholics Anonymous Alcoholics Anonymous September 2003 Development
  • ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…

    ... ,E ;
    JR C,L0388 ; loop back with carry to TRAILER ...
    Tom-Cat Tom-Cat September 2003 Emulators
  • ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…

    ... the code is that the loop at 0x04d8 in the Spectrum ...
    Philip Kendall Philip Kendall September 2003 Emulators
  • help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …

    ... something like this:

    loop: (to shift A reg right ...
    Arjun Arjun October 2003 Development
  • help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …

    ... />
    LD B,1
    loop:
    RRA
    RL B ...
    JR NC,loop

    This could be ...
    Metalbrain Metalbrain October 2003 Development
  • help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …

    Java method to mirror a byte (from SPECSAISIE 1.3 - class ByteSupport):

    public static byte reverseByte (byte in) {
    byte out= 0;
    for (int i= 0; i < 8; i++) {
    out|= in & 1;
    in>>= 1;
    if (i != 7) ...
    andrewbroad andrewbroad October 2003 Development
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... IIII
    dec hl
    .loop ; convert BCD digits in lowest ... /> ld a,(hl)
    djnz loop
    ret


    Alcoholics Anonymous Alcoholics Anonymous November 2003 Development
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... ),c ; store BCD hundreds
    .loop
    ld a,(hl)
    inc hl
    djnz loop
    ret


    Alcoholics Anonymous Alcoholics Anonymous November 2003 Development
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... MMMM
    dec hl
    .loop
    and c ; convert bcd ... /> ld a,(hl)
    djnz loop
    ret

    Spectaculator ...
    Alcoholics Anonymous Alcoholics Anonymous November 2003 Development
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... whereas mine will do a loop (infact I tested it from ...
    cyborg cyborg November 2003 Development
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... br /> DJNZ FILLZEROS ;XX19 loop to put all zeros
    ; Implement
    loop ret z
    call do ...
    dec b
    jr loop
    [/code]

    call do
    jr loop
    [/code]

    Metalbrain Metalbrain November 2003 Development
  • So who plays PS2, Xbox & GameCube games?I'm still into gaming in a big way, how about you guys?

    ... to use IN instead of inkey$ an stuff like thta, and ...
    Sadako Sadako December 2003 Games
  • Insanely difficult gamesOK, folks, so we know Speccy games were difficult in general. But have you ever played some games which were totally unfair from your point of view ?…

    ... getting stuck in an infinite loop when i died in certain ...
    smit smit January 2004 Games
  • Bugaboo the fleaWooHoooooooo Just spent 2 days trying to complete bugaboo the flea for speccy spoliers And did it last night :) was well chuffed lol mind u it did ta…

    ... . Of course, some games cheekily loop at the "end", so the ...
    jil jil January 2004 Games
  • i want to start writing my own gamesi want to start writing my own games but have no idea how. is there any downloadable dummys guides or some software that teaches u how. the only expe…

    ... code too. There is no "INKEY$" function in the Z80 chip ...
    Alcoholics Anonymous Alcoholics Anonymous February 2004 Development
  • speccy on the radio-waves ;)Don't know if it's interesting, but there is still a promotion before our concert in Warsaw. As part of the promotion there will be an audition in P…

    ... Winamp's Playlist and press LOOP.

    Then press PLAY ...
    Yerz Yerz February 2004 Sinclair Miscellaneous
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... a simple FOR NEXT counting loop you can cycle through the ...
    thx1138 thx1138 February 2004 Sinclair Miscellaneous
  • Game Editor questionI'm currently updating my image utility - TommyGun and my old Map editor, which I haven't released on WoS yet. My question is this. Would people li…

    ... I've used the name "loop" in "SPMoveSprRel" it won't ... your use of the name "loop" in your own program. This ...
    Alcoholics Anonymous Alcoholics Anonymous February 2004 Development
  • Game Editor questionI'm currently updating my image utility - TommyGun and my old Map editor, which I haven't released on WoS yet. My question is this. Would people li…

    ... /> ld hl,0
    loop:
    djnz loop
    ...
    ret
    Alcoholics Anonymous Alcoholics Anonymous February 2004 Development
  • Captain Blood helpI'm at the point where I've moved all the 4 Antenna's off of their planets just like the Sinox asked me to. But now, when I talk to the Sinox, it jus…

    ... to get stuck in a loop or something, possibly due to ...
    jil jil February 2004 Games
  • AY MusicHi all. Happy new year! I'm new to spectrum programming, and am interested in writing some music for the +2 AY chip. The problem is...I cant find a…

    ... easy way is probably some loop-dee-loop dnace beat sample program ...
    Sadako Sadako February 2004 Sinclair Basic
  • AY MusicHi all. Happy new year! I'm new to spectrum programming, and am interested in writing some music for the +2 AY chip. The problem is...I cant find a…

    ... efects (i.e. offset, unnatural loop, unnatural prolonging, etc.) and you ...
    GOC GOC February 2004 Sinclair Basic
  • Microdrive Mayhem!I'm wandering if anyone can help me. I recently acquired an Interface 1 plus a couple of Microdrives. But I can't get them to work properly. The Int…

    ... just gets caught in a loop?

    I think by ...
    monty.mole monty.mole February 2004 Sinclair Miscellaneous
  • whats your second favourite retro computerOk i'm going to assume that for most of us here the speccy is our favourite number 1 retro computer,its the best home computer in the world etc etc :…

    ... gameplay, Oh and the loop-the-loop move is a masterstroke. I ...
    Spector Spector February 2004 Games
  • 42 column text, Sinclair Print Utilities, etcI'm currently developing the next of the ZXIF text adventures - "43 Minutes" and, as a side issue, I'm really interested in 42 column text for this g…

    ... and execute this loop

    [code]
    LOOP: LD A,(DE ... /> OR C
    JR NZ,LOOP
    RET
    [/code]
    Dr BEEP Dr BEEP March 2004 Development
  • whats your second favourite retro computerOk i'm going to assume that for most of us here the speccy is our favourite number 1 retro computer,its the best home computer in the world etc etc :…

    ... 've got a few unrolled loop routines that move about 2K ...
    TMR TMR March 2004 Games
  • whats your second favourite retro computerOk i'm going to assume that for most of us here the speccy is our favourite number 1 retro computer,its the best home computer in the world etc etc :…

    ... 've got a few unrolled loop routines that move about 2K ... Spectrum screen (6912) the unrolled loop would occupy 1.5*6912 ...
    Alcoholics Anonymous Alcoholics Anonymous March 2004 Games
  • whats your second favourite retro computerOk i'm going to assume that for most of us here the speccy is our favourite number 1 retro computer,its the best home computer in the world etc etc :…

    ... for the transfer if the loop is [I]totally[/I] unrolled ...
    TMR TMR March 2004 Games
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  • I am currently watching.....
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    John Elliott 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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