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<1…20212223242526…34>
  • Works in Fuse & SpecEmu, not ZXSpinI decided that I wanted to change the scroll routine which I was using for compiling the Trailblazer maps, as I'd just copied it out of Andrew Hewson…

    ... /> ld bc,32
    ldir ;save the pixrow
    < ... hl,bc ;restore value before LDIR
    ld a,l ... push hl ;old source ...
    ldir ;move down pixrow
    pop ...
    Battle Bunny Battle Bunny June 2013 Emulators
  • DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…

    ... is always 8192 bytes
    LDIR ;copy rom image with divide ...
    velesoft velesoft June 2013 Hardware
  • Hacking a game MAJIKAZOHello, I am trying to put a recent game called MAJIKAZO on disk. However, the loader is written for tape only, so I have to find a way how to rewrit…

    ...
    halt
    di
    ldir
    ; This code copies the ...
    ld bc,29
    ldir
    jp 65024

    Speccyman Speccyman June 2013 Development
  • More tea, vicar on disk?Hello, can somebody help me putting the 128k version of this game on disk? The 128k version is free available from Jonathans Webseite. However, the g…

    ... /> ld bc,bank1-move
    ldir ; move decompress bank0 code to ...
    FrankT FrankT June 2013 Sinclair Miscellaneous
  • Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…

    ...
    ld e,1
    ldir
    ld (hl),a
    ld bc,02FFH
    ldir
    ret
    [/CODE]
    Shando Shando July 2013 Development
  • Spike: 48k onlyDoes anyone know what's going on with Spike? [URL=http://s1142.photobucket.com/user/daveyboyhughes/media/spike_zps232a1745.gif.html][IMG]http://i114…

    ... : ld (hl), a
    5b44: ldir
    [/code]
    Bandit Bandit July 2013 Games
  • Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…

    ... /> LD (HL),A
    LDIR ;erase screen
    PI_1: ... ld (hl),$00
    ldir ; clear DOS workspace variables
    ldir ;restore page 7 $db00-& ...
    Battle Bunny Battle Bunny July 2013 Games
  • Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…

    ... ld bc,12
    ldir
    ld hl, ... ld bc,12
    ldir
    ld hl, ... ld bc,12
    ldir
    ; 402 LET ... /> ld bc,4
    ldir
    ret

    Battle Bunny Battle Bunny July 2013 Sinclair Basic
  • 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…

    ... , but blitting data around with LDIR takes far too long. So ...
    stephenw32768 stephenw32768 July 2013 Development
  • Is there an emulator that can "autosnapshot" after loading a tape?The reason i'm asking is that my everyday speccy is a grey +2 with a DivIDE 2k11. Some TAP files simply won't work because of rom checks and other in…

    ... counter to just before the LDIR or LDDR instruction that is ...
    stephenw32768 stephenw32768 August 2013 Emulators
  • 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…

    ... bytes get missed during the LDIR. However, the addition of ... pulse (1024T). After doing the LDIR, the implementation of loader_advance_pointer spins ... :
    ld bc,0x40
    ldir
    call loader_read_edge
    ld ...
    stephenw32768 stephenw32768 August 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…

    ... are loaded:
    [LIST]
    [*]LDIR them to 0x5800 (768 bytes ...
    balford balford August 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…

    ... are loaded:
    [LIST]
    [*]LDIR them to 0x5800 (768 bytes ...
    Hikaru Hikaru August 2013 Development
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ...
    LD BC,16384
    LDIR ; copy image of custom zx ...
    velesoft velesoft August 2013 Hardware
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ... to videoram can replace slow LDIR). DMA chip can send data ...
    velesoft velesoft August 2013 Hardware
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... + manual which set up an ldir to fill the screen with ...
    u6c87 u6c87 August 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…

    ... elsewhere
    [*]Load a short LDIR / JP routine ( genFixup() ) into some ... RAM
    [*]Jump to the LDIR/JP code, exiting the loader ...
    GoingDigital GoingDigital August 2013 Development
  • MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…

    ... third of the display, simply ldir the 256 bytes over the ... ; copies 2048-256 bytes.
    ldir
    ret
    [/code]
    u6c87 u6c87 September 2013 Development
  • The complete Knight Tyme (48k) RAM disassemblyHello! Just a quick note to let everyone know that the initial version of my [URL="http://www.dur.ac.uk/philip.anderson/disassemblies/knight-tyme-48…

    ... the end rather than an LDIR from the beginning, or by ...
    John Elliott John Elliott September 2013 Announcements
  • 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…

    ...
    ld hl,.block1
    ldir

    ;; decompress block 2 ...
    stephenw32768 stephenw32768 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…

    ... move it somewhere else, then LDIR it back after decompression.
    GoingDigital GoingDigital September 2013 Development
  • Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…

    ... speed and size. For example LDIR is compact, but an unrolled ...
    chev chev September 2013 Sinclair Miscellaneous
  • Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…

    ... a repeating instruction such as LDIR, CPIR, etc, the time needs ...
    Battle Bunny Battle Bunny September 2013 Sinclair Miscellaneous
  • Converting Basic code into machine codeIm just interested to know if I can converter a game I've written in basic into Machine code, Is their a program that can do this??

    ...
    ld bc,6144
    ldir
    end asm
    [/CODE ...
    LCD LCD 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

    26 ...
    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…

    ...
    ld bc,$0300
    ldir
    ret

    30 ...
    Einar Saukas Einar Saukas September 2013 Development
<1…20212223242526…34>

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