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  • Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…

    ... (try it on paper!)
    xor $1f
    and b
    BloodBaz BloodBaz February 2010 Development
  • Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…

    ... /> jr z, setstate

    xor a
    bit 0,c ...
    Alcoholics Anonymous Alcoholics Anonymous February 2010 Development
  • Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…

    ... screen. clear the flag
    xor a
    ld (isr_static+1 ... .nextattrib

    .doneattribs
    xor a
    ld (copyptr), a ...
    ld e, (hl)
    xor #18
    .noflip
    djnz ... , 512
    ldir

    xor a
    ld (copyptr), a ...
    Paradigm Shifter Paradigm Shifter February 2010 Games
  • Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…

    ... , 512
    ldir

    ; xor a ; *Jof not needed ; a ...
    frobush frobush February 2010 Games
  • Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…

    ... /> jr z, setstate

    xor a ; state0
    ld de ...
    Alcoholics Anonymous Alcoholics Anonymous February 2010 Development
  • Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…

    ... if 'y', 'u', 'i'
    xor $03 ; 7 (37) ;
    ret ...
    FrankT FrankT February 2010 Development
  • Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…

    ...
    ld c, e
    xor #e0 ; #a000 maps to #4000 ...
    ld a, h
    xor #e0 ; #a000 maps to #4000 ...
    The President The President February 2010 Games
  • OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…

    ... />
    versus:

    [code]XOR A[/code]

    I ... 'd always use XOR A. Even in something profoundly ... modicum of Z80 experience knows XOR A means set the accumulator ...
    Winston Winston February 2010 Development
  • Platform Game Designer 2Right, with Telly Heroes out of the way, I've decided to have a second attempt at this. I've ditched the old PGD2 source, and started again with the…

    ... will get lost as it XOR's over it ([I]I ...
    BiNMaN BiNMaN March 2010 Development
  • Platform Game Designer 2Right, with Telly Heroes out of the way, I've decided to have a second attempt at this. I've ditched the old PGD2 source, and started again with the…

    ... will get lost as it XOR's over it ([I]I ...
    jonathan jonathan March 2010 Development
  • Feelin' kinda proud of myselfOkay, it has bugs. But I kludged it together about 10 mins after getting the sprite thing to actually work. [url]http://britlion.googlepages.com/Spr…

    ... IV

    halt
    erase-buffer-redraw like crazy
    wait for a while
    erase-buffer-redraw like crazy.
    Gedlion Gedlion March 2010 Development
  • Feelin' kinda proud of myselfOkay, it has bugs. But I kludged it together about 10 mins after getting the sprite thing to actually work. [url]http://britlion.googlepages.com/Spr…

    ... IV

    halt
    erase-buffer-redraw like crazy
    wait for a while
    erase-buffer-redraw like crazy.
    na_th_an na_th_an March 2010 Development
  • tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …

    ... />

    [code]
    waitkey xor a
    ld hl,23560 ...
    Dr BEEP Dr BEEP March 2010 Development
  • tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …

    ... sprite_draw_function ; could be mask, or, xor, etc
    [/code]

    xor, or, etc).

    The ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Development
  • Midi2ayhello, Does anyone know how to use MIDI2AY ? FABIEN

    ... /> jp exit

    fin xor a
    out (0feh),a ...
    kgmcneil kgmcneil March 2010 Emulators
  • Software with AY Music supportFollowing a couple of queries from customers, I thought it might be useful if we could have a thread which identifies which games and software suppor…

    ... /Xenophobe.tzx.zip[/url]
    Xor [url]ftp://ftp.worldofspectrum.org ...
    Yerzmyey Yerzmyey March 2010 Games
  • Names not in our high streets any more.I dont know why but I just fell into a day dream and started to think of all the old high streets shop brands that aren't around any more. Don Mille…

    Still here.

    [img]http://img526.imageshack.us/img526/7539/erase.jpg[/img]
    Tobo Tobo March 2010 Chit chat
  • Names not in our high streets any more.I dont know why but I just fell into a day dream and started to think of all the old high streets shop brands that aren't around any more. Don Mille…

    [QUOTE=Tobo;435070]Still here.

    [img]http://img526.imageshack.us/img526/7539/erase.jpg[/img][/QUOTE]

    that picture could have been taken anytime, :razz:
    mile mile March 2010 Chit chat
  • Comando Tracer, compatibility problem??I fear there is another case of incompatibility with +2A models... I have 2 copies of Comando Tracer, a game by Dinamic, and both copies, when finis…

    On all the versions that I checked (including Biotoxin's) there's some port writing, XOR and data relocation going on after the game loads, but since m.c. isn't my thing I have no idea if that would cause the game to crash on a +2A upon loading.
    zxbruno zxbruno April 2010 Games
  • Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…

    ... ]
    503: 87CA AF GAMESTART: XOR A ; Clear a load of ... disabled
    606: 8899 AF XOR A
    607: 889A ED58 ...
    Jonathan Harston Jonathan Harston April 2010 Hardware
  • DivIDEo - streaming video on the DivIDEThis has been a bit of a personal holy grail for years and years, so I'm very pleased to announce the release of DivIDEo, my streaming video system f…

    ... :
    LD BC,#EFF7
    XOR A
    OUT (C),A ...
    velesoft velesoft May 2010 Announcements
  • Games which are wrongly listed as only 128KThis is a list of games which are listed as 128k only in the database, but they also work on 48k mode, usually without music/sound : -Wacky Races (n…

    ... on 48K also)

    -Xor (Has beeper music)

    Ivanzx Ivanzx May 2010 Infoseek database
  • Games which are wrongly listed as only 128KThis is a list of games which are listed as 128k only in the database, but they also work on 48k mode, usually without music/sound : -Wacky Races (n…

    ... on 48K also)

    -Xor (Has beeper music)[/QUOTE]
    mheide mheide May 2010 Infoseek database
  • Who can fix my Flash programmer code?I have a problem with some code, it doesn't work and I don't have any idea what it's trying to do, or failing to do! The code in question is the fla…

    seems being the operative word...

    the tape routine is running in contended ram so breaks, but for some reason it worked in spin!

    also there are bugs in the flash erase code somewhere, back to the drawing board :)
    guesser guesser May 2010 Development
  • Pacmania on +3 diskEven after the game has loaded up, the disk won't stop spinning. Anyone know what's going on?

    ... line 21
    4) type ERASE "disk":SAVE "disk" line 10 ...
    nuggetreggae nuggetreggae May 2010 Hardware
  • ZX BASIC (Boriel's Compiler) - LibrariesWell, we have a nascent option on a sprite library coming together, thanks to na_th_an's fourspriter being retooled for the job. It's not general pur…

    ... with Binary AND, OR and XOR functions). The most of very ...
    LCD LCD May 2010 Development
  • ebay virginjust joined ebay. me and the lass have been playing 'epic 40k'. i had some old models so we had a go, she likes it cos its like advanced wars. so i…

    [QUOTE=fog;445360]like stuff I send, u just have to shake it to know it's a tape of some sort.hehe[/QUOTE]

    Nooooooo!!! All the static build-up will erase the tapes!

    :razz:
    ZnorXman ZnorXman May 2010 Chit chat
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... b, 200
    loop1:
    xor a
    out (254), a ...
    Fikee Fikee May 2010 Development
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... b, 200
    loop1:
    xor a
    out (254), a ...
    Rosebud_ Rosebud_ May 2010 Development
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... b, 200
    loop1:
    xor a
    out (254), a ...
    Rosebud_ Rosebud_ May 2010 Development
<1…28293031323334>

Latest Posts

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  • Mis-labeled cassette titles or a name change?
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  • Ways to preserve Speccy Tapes in the loft
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  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 10:47AM
  • Minor British Sports that did become games on the ZX Spectrum
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  • How to return to basic properly from ASM
    Paradigm Shifter on 1:54AM
  • Frankie's ZX Spectrum Digouts
    Zup on April 8
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HitBox

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