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<1…16171819202122…34>
  • Manic Miner - Loader And Screen DifferencesThere are some changes between the various releases and re-releases of Manic Miner with both the loader and the loading screen itself. Here I'll deta…

    ... versions:

    The Bug Byte release (this comes in two ...

    [B]Loader (Bug Byte) original:[/B]

    [img ... ]

    [B]Loader (Bug Byte) 'alternative':[/B]

    [img ...
    spider spider September 2013 Sinclair Miscellaneous
  • 128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…

    ... />
    [code];; load a 4000 byte BASIC program
    ld ix ...
    stephenw32768 stephenw32768 September 2013 Development
  • RCS HelpThis plea for HELP is related to the RCS screen handling routines thread. To further save space in the current crop of routines its looking like the …

    ... wondering if using the 11 byte method here its possible to ...
    jamorski jamorski September 2013 Development
  • A new maze game: "Deadly Labyrinth of Lord Xyrx"DOWNLOAD: [url]http://hooyprogram.republika.pl/xyrx.zip[/url] Here is the YouTube video to let You guys know how to go through some levels: [url]htt…

    ... programs. :)

    [img]http://yerzmyey.republika.pl/xyrx_gfx.gif[/img ... /xyrx_gfx4.gif[/img] [img]http://yerzmyey.republika.pl/xyrx_gfx3.gif[/img ... interested:
    [url]http://yerzmyey.i-demo.pl/Yerzmyey-Deadly_Labyrinth_of_Lord_Xyrx.mp3[/url]
    Yerzmyey Yerzmyey September 2013 Brand new software
  • Draconus Music Cover (AY/YM chip)Hi, except the [url]http://www.worldofspectrum.org/forums/showthread.php?t=45129[/url] game from last weekend Wapniak party, there's also a small gif…

    ... ://ym-digital.i-demo.pl/Yerzmyey-Cover_Compo_Wapniak_2013.zip[/url]
    What ...
    Yerzmyey Yerzmyey September 2013 Chit chat
  • 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…

    ... /> ;;
    ;; Leaves HL pointing one byte past compressed data and DE ... /> ld c,a ; copy into byte counter
    cp 15 ; see ... /> ld a,c ; read low byte of byte counter (4T)
    .getlength_2 ...
    stephenw32768 stephenw32768 October 2013 Development
  • Spectrum Software : = Sports SimsDrop me an offer by PM if any of the following is of interest. Football Indoor Soccer (Alternative) Football Manager (Addictive) The Double (Summit…

    ... (Maynard)
    american football (bug byte)

    darts

    smogit smogit October 2013 Sales
  • A few questions about ZX Spectrum assemblyHi, I have a few questions about ZX Spectrum assembly language programming: - What's the best assembly tool for ZX Spectrum? I tried a bit the ZXSpi…

    ... ? I would like to define .Byte, .Word and string variables but ...
    Zerg Zerg 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…

    ... : a loop decreasing the low byte inside a loop of decreasing ... the high byte:

    [CODE]; A simple ... B,E ; Load the lower byte into B, for DJNZ
    byte into C
    XOR A ...
    Zerg Zerg October 2013 Development
  • Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…

    ... taking 86041/4096 = 21T per byte on average. Also the code ... 51204/4096 = 12.5T per byte on average. However the code ... 67365/4096 = 16.45T per byte on average, and it takes ... 67225/4096 = 16.41T per byte on average, and it takes ...
    Einar Saukas Einar Saukas October 2013 Development
  • Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…

    ... form which is one prefix byte longer than using HL. There ...
    joefish joefish October 2013 Development
  • Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…

    ... br /> glyph_t *glyph,
    byte x,
    byte y,
    rectangle_t *clip_rect ... with two tables on 256 byte boundary for fastest vmem ... to point 12 then first byte mask will be 11111110 ... and end byte mask will be 00000111. ...
    tstih tstih October 2013 Development
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... (0xd300, 0xd4, 257); // initialize 257-byte im2 vector table with all ... .
    ld a,200 ; high byte of pointer table location.
    ld i,a ; set high byte.
    im2 ; select interrupt mode ...
    slenkar slenkar October 2013 Development
  • bitmap address to attribute addressI've searched, but I don't seem to find the proper keywords. I have a bitmap screen address in DL, character aligned (the address of the top byte of…

    ... (the address of the top byte of a character). For example ...
    na_th_an na_th_an November 2013 Development
  • that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…

    ... always at least one spare byte in E_LINE, even if it ...
    Battle Bunny Battle Bunny November 2013 Sinclair Basic
  • Peculiar joystick interfaceAt first glance, these two items look very familiar: [url]http://www.ebay.co.uk/itm/Sinclair-ZX-Spectrum-Vintage-Computer-Joystick-Interface-DK-Tron…

    ... connector to read the high byte of the input address. This ...
    joefish joefish November 2013 Hardware
  • Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…

    ... of the number, plus one byte for each two BCD digits ...
    mcleod_ideafix mcleod_ideafix November 2013 Development
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... this list is:
    ; 1 byte FLAGS
    ; 0..2 Page ...
    Zup Zup December 2013 Development
  • Assembly code auto optimiserFor my Finders Keepers Plus project I'm considering writing an Assembly code auto optimiser. Way back when I wrote the original FK I considered optim…

    ... this would have saved a byte every time and sometimes two ...
    David Jones David Jones December 2013 Development
  • New Game: Spiker: Basic TrainingThis is a new game for 128K spectrums inspired by the Spectrum spaceship mascot thread here on WOS. Even if you hate the game, it is worth loading up…

    ... hear some cracking tunes from Yerzmyey :)

    [IMG]http://www ...
    spud spud December 2013 Brand new software
  • Changing the font in z88dkEither I've got this backwards or the documentation is incorrect... :smile: "[URL="http://www.z88dk.org/wiki/doku.php?id=platform:zx"]The standard Z…

    ... is the low byte and hh the high byte of the font ...
    szeliga szeliga December 2013 Development
  • STP: Query about Dizzy prince of yolkfolk and MakeTZXI'm trying to create a TZX from my copy of Dizzy Prince of the Yolkfolk using MakeTZX 2.31 (not sure why I'm not using 2.33), but I can't seem to get…

    ... both seem to be 1 byte too long. Note that both ...
    u6c87 u6c87 January 2014 MIA/STP/SDP
  • Calculating screen address to alternative ATTR area?I'm using this small snippet of code to convert a screen address to an attribute cell address... [CODE]AttrDE: ld a, d ; get the hig…

    ... a, d ; get the high byte of screen address
    rra ... 0x58 ; set the high order byte to the start of the ...
    Sokurah Sokurah January 2014 Development
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... for some of the multi byte indexing instructions that possibly have ...
    Basher Basher January 2014 Hardware
  • Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…

    ... with resistors. And the high byte of the address bus is ... why not set the high byte to FF so the resistors ... the cpld which outputs a byte from a eight bit counter ...
    Basher Basher January 2014 Hardware
  • DisarrayFor the sake of having some clarity [COLOR="Silver"]for once[/COLOR] I have the project data in several source files according to their types. E.g. t…

    ... supposed to have a 24 byte LUT in the middle of ... it, another 8 byte one in the beginning and ...
    Hikaru Hikaru January 2014 Development
  • mirroring bitsIf I have a string of 1408 bytes, each of which has one bit 'b' set, what's the shortest way of mirroring that string, so that each bit set at positi…

    ... '? The bit positions change from byte to byte, as they're plots ...
    Battle Bunny Battle Bunny January 2014 Development
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... beam reached the 1st screen byte.
    2. Load R with ...
    Hikaru Hikaru January 2014 Development
  • hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…

    ... ,6) array using a 256-byte permutation table. How do I ...
    Battle Bunny Battle Bunny January 2014 Development
  • What to do when INT doesn't work?Due to the limitations of the Spectrum's floating point number format, two slightly different large numbers, or two slightly different small fraction…

    ... encoded with the same 5-byte value. Alternatively, the result of ...
    Battle Bunny Battle Bunny January 2014 Sinclair Basic
<1…16171819202122…34>

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