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  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... unsigned int timer(23672);
    // Table Holding Movement Data for Each ... /> XDEF SND_TICK
    SND_TICK:
    defw 0
    #endasm

    slenkar slenkar November 2013 Development
  • That painter thing..I'm struggling to think of a non clunky way of detecting when a 'box' has been surrounded and can be highlighted, like in the pic: [IMG]http://i1142…

    ... think blocks and a jump table is the way to go ... /> jumptable
    defw solid_block
    defw dec_counter_1
    defw dec_counter_2
    defw dec_count_1and2
    R-Tape R-Tape November 2013 Development
  • That painter thing..I'm struggling to think of a non clunky way of detecting when a 'box' has been surrounded and can be highlighted, like in the pic: [IMG]http://i1142…

    ... /> org 32768
    ;corner coordinate table:
    ;TopL:row,col, TopR ... , BotR:row,col, counter
    defw Initialise, CountSquares
    CORNERS:DEFB ...
    ret z ;end of table
    cp b
    jr ...
    Battle Bunny Battle Bunny November 2013 Development
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ...
    unsigned int mytimer;
    // Table Holding Movement Data for Each ... /> XDEF SND_TICK
    SND_TICK:
    defw 0
    #endasm

    my IM2 table is at d000 which is ... 257 bytes for the IM2 table
    I dont really have ...
    slenkar slenkar November 2013 Development
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... /> XDEF SND_TICK
    SND_TICK:
    defw 0
    #endasm
    [/quote ... ]

    That defw is part of main, so ... />
    The memset() fills the table with $d4 bytes. The z80 ... br />
    This 257-byte table containing the same byte has ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... pointer to the block graphics table) is at PEEK org+256 ... ;wherever (249 bytes)

    defw SetBLOCK
    ;enter here to ...
    Battle Bunny Battle Bunny February 2014 Development
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... bit * 8 bit is four table lookups, and add the results ... , etc.

    Yes, the table runs to a page
    table may be faster than the ... up multiplication with longer operands (16bit and longer) one can use ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…

    ...
    Now, if a jump table and JP (HL) is used ... DEFW floortile ; 2
    DEFW walltile ; 4
    DEFW bottle ; 6
    DEFW ... requirement is that the jump table is high-byte aligned. ...
    bobs bobs March 2014 Development
  • Tile engine and slight colour flickerOver the past few nights I've been working on a simple tile game engine for a rock fold game I'm making. While all is going surprising well I've not…

    ... ; Moves pointer to screen table (visable address of each pixel ...

    Made by screen table lookup a bit bigger to ... DEFW 16384
    DEFW 16640
    DEFW 16896
    DEFW 17152
    DEFW 17408
    DEFW ...
    richdotward richdotward June 2014 Development
  • Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …

    ... /> ADD HL,DE ; HL = table row address
    EX DE ... RET

    .PIXELADDRESSTBL
    defw $57A0,$56A0,$55A0,$54A0,$53A0 ... 52A0,$51A0,$50A0
    defw $5780,$5680,$5580,$5480,$5380 ...
    dbolli dbolli June 2014 Development
  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... :

    defw Routine1
    defw Routine2
    defw Routine3
    ...
    table of offsets instead (not ... in any order in the table --- your previous snippet ... TableRoutines first. If the table is the only place ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Emulators
  • Help needed with a bit of code...My minds gone blank again I'm afraid, I'm having trouble with this routine that loads variables into memory then calls the corresponding routine. Th…

    ... /> If you need that 'adds' table to point to your routines ... :

    defw routine_1 - 3
    defw routine_2 - 3
    defw routine_3 - 3 ... address you get from the table into DE, point HL at ... convenient though to use as table pointers, freeing up DE and ...
    joefish joefish October 2014 Development
  • Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc.&nbsp; There is an interesting…

    ... the power of 10 table:

    ;   defw $684D, $A510, $00A8 ;1E ... />
    should be:

    ;   defw $68D4, $A510, $00A8 ;1E+12 ...
    Alcoholics Anonymous Alcoholics Anonymous June 2015 Development
  • Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc.&nbsp; There is an interesting…

    ... the power of 10 table:

    ;   defw $684D, $A510, $00A8 ;1E ... />
    should be:

    ;   defw $68D4, $A510, $00A8 ;1E+12 ...
    zub zub June 2015 Development
  • Games not compatible with the 128+ & grey +2Like the +2A & +3 thread, there are a few games that do not work correctly on the original 128+ and the grey +2. Two games that I know of that wil…

    ... 6e 5f $11ts
    defw $0100 ; 88f9 00 01 ... ts
    defw $fe00 ; 88fb 00 fe ts ... 6e 5f $11ts
    defw $0100 ; 5b99 00 01 ... ts
    defw $fe00 ; 5b9b 00 fe ts ... ($9c8a),a ; point at new table
    ;
    jp $5b00 ; ...
    jp jp October 2015 Games
  • SkoolKit 5.1SkoolKit 5.1 has been released. SkoolKit is a set of command line utilities for disassembling Spectrum software, into ASM format or into a bunch o…

    ... this:
    [code]
    $E8E0 DEFW $FA14 ; {foo
    $E8E2 ... DEFB $44
    $E8E3 DEFW $FA34
    $E8E5 DEFB $44 ...
    $E8E6 DEFW $FA54
    $E8E8 DEFB $44 ... comment span the whole table of values :(
    guesser guesser March 2016 Announcements
  • (Collected) Darkhog's noob question about z80 assemblySince when I'm learning new language or library, I tend to ask lots of stupid (for any advanced person) questions and I don't want it to have mess up…

    [quote="Darkhog;52514"]
    - Regular IF z80 equivalent. e.g. If A
    GReW GReW April 2016 Development
  • Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…

    ... position the pixel coords table gets rearranged in ...

    X0_Y0: defw 0000
    W0: defb 00 ... />
    P_C: defw 0000
    P2C: defw 0000

    ... br /> srl h ;coords table size / 2
    rr ...
    Battle Bunny Battle Bunny April 2016 Sinclair Basic
  • Basic BASIC help needed RNDHi all, I have recently re-discovered an old program I wrote in the early 90s which would do generate random lottery numbers. I know little now, an…

    ... )
    defw $023F ;address of 'RND' code in key table
    defb ...
    Battle Bunny Battle Bunny May 2016 Sinclair Basic
  • I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…

    ... jumping to program - release relocation table (no need for it anymore ... statements there will be a table of defw that will change between ...
    Alcoholics Anonymous Alcoholics Anonymous October 2016 Development
  • The point of IX+1 IX+2 ?the numbers that you can add-on to IX and IY seem hardcoded, so I dont see the use of that feature? any examples of the use of IX and IY plus number…

    ... />
    party:
    defw eldricthewizard ;; pointer to a wizard ... to a warrior
    defw phoebethethief ;; pointer to a ... thief
    defw 0 ;; terminate array with ... switch uses a hash table to speed things up. ...
    Alcoholics Anonymous Alcoholics Anonymous July 2017 Assembler
  • How can I make a UDG rotate?I designed a set of UDG's that can be used for making shapes or letters. Trouble is that my circle - for example - consists of 4 pieces and it would…

    ... get offset into the address table
    LD HL,y_lookup ... RET

    y_lookup:
    DEFW $4000,$4100,$4200,$4300,$4400 ... 0
    OldXY: DEFW $FFFF
    PointerXY: DEFW $8080
    MouseY ...
    colonel32 colonel32 November 2017 Sinclair Basic
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