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<1…21222324252627…34>
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    ld bc,$0300
    ldir
    ret

    30 ...
    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    lb bc,$0300
    ldir
    ret

    35 ...
    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    ld bc,$0300
    ldir
    ret

    35 ...
    Einar Saukas Einar Saukas September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    ld bc,$0300
    ldir
    ret[/CODE]
    Einar Saukas Einar Saukas September 2013 Development
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... rotate opcodes.

    if ldir lddr ldi or ldd have ...
    Basher Basher September 2013 Hardware
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... bank 0 with a short LDIR routine so the original version ...
    chev chev September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld bc $0300
    EDB0 ldir
    C9 ret

    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    Einar Saukas Einar Saukas September 2013 Development
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... want to overwrite BASIC
    LDIR[/code]

    If you ...
    chev chev September 2013 Development
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... ;quantity to copy
    LDIR
    LD A,016 ... LD BC,6144
    LDIR
    LD A,017 ; ... LD BC,6144
    LDIR
    LD A,016 ; ... /> LD BC,6144
    LDIR
    EI
    RET ...
    Alessandro Grussu Alessandro Grussu September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    ld bc,$0300
    ldir
    ret[/CODE]
    Einar Saukas Einar Saukas September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    Einar Saukas Einar Saukas September 2013 Development
  • JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …

    ... at 760Dh, it's an LDIR to clear the screen, and ... taken 462 bytes into the LDIR. I would guess that the ...
    John Elliott John Elliott September 2013 Sinclair Miscellaneous
  • JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …

    ... ; Setup the requirements for an LDIR so that we can blackout ... the loader itself.

    ldir ; Do it!

    [/code ...
    BloodBaz BloodBaz September 2013 Sinclair Miscellaneous
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    jamorski jamorski September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... ld b,$03
    EDB0 ldir
    C9 ret

    jamorski jamorski September 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... right place is just an LDIR and a JP away.
    GoingDigital GoingDigital September 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ...
    ld b,3
    ldir
    ret[/CODE]

    Einar Saukas Einar Saukas September 2013 Development
  • Interface 1bisHas anyone on here got a "Interface 1bis": [URL="https://sites.google.com/site/interface1bis/"]https://sites.google.com/site/interface1bis/[/URL] I …

    ... LD BC,CODE_E-COPY_R
    LDIR
    JP REL_AD
    ;< ... /> LD BC,#4000
    LDIR
    OUT (RAM),A; ... /> LD BC,#4000
    LDIR
    OUT (ROM),A; ...
    Dan Antohi Dan Antohi September 2013 Hardware
  • LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…

    ...
    ld bc,767
    ldir
    .wait_loop:
    call 0x28e ...
    stephenw32768 stephenw32768 October 2013 Development
  • SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…

    ... divIDE and divMMC.
    [*]Z80 LDIR block copy: PUT 49152, 16384 ...
    chev chev October 2013 Sinclair Basic
  • [NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…

    ... [/B] and [B]more precise LDIR/LDDR instructions[/B], many more ... run now.
    * Added accurate LDIR/LDDR emulation, more protected boot ...
    fms fms October 2013 Emulators
  • SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…

    ...
    [*]PUT?memory block copy (LDIR)
    [*]RENUM?renumber the program ...
    chev chev October 2013 Sinclair Basic
  • LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…

    ... past decompressed data, a la LDIR. Leaves
    ;; zero in ... additional length if so
    ldir ; copy this many bytes
    ldir ; copy bytes
    pop hl ...
    stephenw32768 stephenw32768 October 2013 Development
  • Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…

    Just use LDIR for a screen filling routine.....
    DEATH DEATH October 2013 Development
  • Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…

    [CODE]
    di
    ld hl,16384
    ld de,16385
    ld bc,1024
    ld a,62
    ld (hl),a
    ldir
    ei
    ret
    [/CODE]
    Gott Gott October 2013 Development
  • Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…

    ... pages. Not mentioning fill by LDIR. Whats the point of exploiting ...
    catmeows catmeows October 2013 Development
<1…21222324252627…34>

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