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<1…21222324252627…34>
  • WOS drops some games.I made several links to zx games located on this site, but unfortunately those games are gone. What happens? Elite III - World of Spectrum [url]htt…

    ...
    ld (hl),l
    ldir[/code]or maybe[code] inc ...
    Hikaru Hikaru January 2011 Games
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... bc,6144 ; vram size
    ldir ; all to 0
    ld ...
    ld bc,768
    ldir
    ret
    [/code]
    tstih tstih January 2011 Development
  • Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…

    ... screen + attributes less 1
    LDIR ;Copy from (HL) to (DE ... , 32 bytes per line
    LDIR ;Copy the entire first row ... screen + attributes less 1
    LDIR ;Copy from (HL) to (DE ... colour byte 15 times...
    LDIR ;...to make a row.
    joefish joefish February 2011 Development
  • Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…

    ...
    ld (hl),l
    ldir
    ld bc,767
    ld (hl),64+6
    ldir
    call build_tables
    ;
    Turkwel Turkwel February 2011 Development
  • Activision's Ghostbusters (1984 version)Did anyone ever manage to work out (or hack) the account numbers? If so, are they the same for the 1986 rehash?

    ... is simple. It replaces the LDIR which copies from a backbuffer ...
    Jimmy Jimmy February 2011 Games
  • Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…

    ... )
    DAA? passed
    LDIR? failed (0x05)
    Floating bus ... )
    DAA? passed
    LDIR? failed (0x01)
    Contended IN ... )
    DAA? passed
    LDIR? passed
    Contended IN? passed ... br /> DAA? passed
    LDIR? failed (0x05)
    Contended IN ...
    gasman gasman February 2011 Hardware
  • Zombie Zombie Loading SchemeA quick check of the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005866"]Zombie Zombie[/URL] loader identifies it's the RAPID LOADING SYS…

    ... ; 5e0c ed 67 $12ts
    nop ; 5e0e 00 $04ts
    inc ...
    jp jp February 2011 Infoseek database
  • Is ZX80 really "Z80 only"?The Spectrum has ULA to generate video display. Does the ZX 80 have any kind of processing chips apart from Z80? How is the video display generated o…

    ... - being fed a series of NOP instructions - until there's a ...
    Matt_B Matt_B March 2011 Sinclair Miscellaneous
  • Recommend a dev environmentIt's been a while since I last wrote any Z80 assembler - must be over 20 years, and since I wrote any spectrum Z80 assembler more like 25 years. I n…

    ... of A register and mistyped ldir.

    Do you get ...
    Turkwel Turkwel March 2011 Development
  • Recommend a dev environmentIt's been a while since I last wrote any Z80 assembler - must be over 20 years, and since I wrote any spectrum Z80 assembler more like 25 years. I n…

    ... of A register and mistyped ldir.

    Do you get ...
    ccowley ccowley March 2011 Development
  • New tool: SnapToTap R2it's basically a gui update to VSC. But it's now simpler to convert sna files into tap files. what is special about SnapToTap? it converts snapshots…

    ... higher memory with a small LDIR program to copy them to ...
    torot torot March 2011 Announcements
  • New tool: SnapToTap R2it's basically a gui update to VSC. But it's now simpler to convert sna files into tap files. what is special about SnapToTap? it converts snapshots…

    ... higher memory with a small LDIR program to copy them to ...
    Arda Arda March 2011 Announcements
  • Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …

    ... cycles, which is just a NOP or the same as having ...
    joefish joefish March 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... them anywhere, which means a NOP in front of every ordinary ... pass, etc., doing either a NOP or an EXX to swap ...
    joefish joefish April 2011 Development
  • SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…

    ... /> ld bc, 768
    ldir
    call shift
    call ... br /> ld bc,$300
    ldir
    ret

    ... /> ld bc, 4096
    ldir
    ld (hl), 0< ... /> ld bc, 2047
    ldir
    xor a
    ld ... /> ld bc, 31
    ldir
    pop bc
    pop ...
    chev chev April 2011 Sinclair Basic
  • Minigamecompo 2011 ??????In the Minigamecompo 2010 I received only a handfull of votings. So I started a [URL="http://minigamecompo.weebly.com/forum.html#/minigamecompo-2011…

    ...
    ld hl,start
    ldir
    ret
    start here ...
    Dr BEEP Dr BEEP April 2011 Games
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... pre-set) or a spare NOP/EXX byte in front of ...
    joefish joefish April 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... EI followed by RET or NOP when you do. However in ...
    tstih tstih April 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... EI followed by RET or NOP when you do. However in ...
    Winston Winston April 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... is not a simple useless NOP actually
    ; see the code ... 4
    ld a,0 ; NOP
    jr c,loc_A162
    Ketmar Ketmar April 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... ...we do waste 32 x nop).

    [CODE]
    ld ... cycles so add
    nop ; nothing | 4
    nop ; -"- | 4
    ;; = 31 ...
    tstih tstih April 2011 Development
  • DIVIDE - source code of new FATWARE 0.14[B][U][SIZE="5"]Source code of FATware system is now free.[/SIZE][/U][/B] BAZE (author of FATWARE) release source code of last version FATWARE 0.14 …

    ...
    LD BC,8192
    LDIR ;install first 8kB of custom ...
    LD BC,8192
    LDIR ;install second 8kB of custom ...
    LD (HL),A
    LDIR ;erase page 2 with custom ...
    OUT (227),A
    LDIR ;install system from divide rom ...
    velesoft velesoft May 2011 Hardware
  • Your Views on... GhostbustersI dusted off the Master System version of this and inspired me to try out the Speccy version. It's a good game with it's strong and weak points. I …

    ... :

    old code:
    LDIR of 6816 bytes = 143131 T ...
    Jimmy Jimmy May 2011 Games
  • Sabre Wulf - don't you just hate itThere's lots of Speccy opinions that divide us, but one thing I seem to stand alone in is my dislike for Sabre Wulf. I'm not joking now, I don't like…

    Nop, you're right, Alessandro, they went to U.S Gold
    itsallgood itsallgood May 2011 Games
  • Sabre Wulf - don't you just hate itThere's lots of Speccy opinions that divide us, but one thing I seem to stand alone in is my dislike for Sabre Wulf. I'm not joking now, I don't like…

    [QUOTE=itsallgood;534002]Nop, you're right, Alessandro, they went to U.S Gold[/QUOTE]

    Dammit. That'll teach me to type before caffeinating...
    j00ce j00ce May 2011 Games
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... ... :razz:[/QUOTE]

    hahaha....nop!!! Rom in a socket and ...
    Mobutu Mobutu May 2011 Hardware
  • Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…

    ... 0 | 4 t-states
    nop ; 4 t-states
    ... | 4 t-states
    nop ; 4 t-states
    ... | 4 t-states
    nop ; 4 t-states
    ... | 4 t-states
    nop ; 4 t-states
    ... hl ; 6 t-states
    nop ; 4 t-states
    ...
    tstih tstih May 2011 Development
  • And 255I've had a good think and I'm pretty certain of this: Surely, surely there can't be a use for this command: 'AND 255'. Please tell me I'm right! (…

    nop :p
    guesser guesser May 2011 Development
  • And 255I've had a good think and I'm pretty certain of this: Surely, surely there can't be a use for this command: 'AND 255'. Please tell me I'm right! (…

    [QUOTE=guesser;535616]nop :p[/QUOTE]

    You're quite wrong, there are [I]thousands[/I] of them in my programs so they can't be useless!;)
    R-Tape R-Tape May 2011 Development
  • Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…

    ... /> nop
    nop
    nop
    nop
    nop
    nop
    nop
    nop
    nop
    nop
    nop ...
    nop ...
    tstih tstih May 2011 Development
<1…21222324252627…34>

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