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<1…15161718192021…34>
  • Cobra (improved again BUGFIX)This is an improved BUGFIX for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000996"]Cobra[/URL], that works better than the fix curre…

    ... 7 ; 254 7
    jp z,$9566 ; 202 102 149
    Einar Saukas Einar Saukas July 2013 Infoseek database
  • 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…

    ... REM EXX:
    401 LET Z=B: LET B=V: LET ... V=Z
    402 LET Z=C: LET C ... =X: LET X=Z
    403 LET Z=D: LET D ... =S: LET S=Z
    404 LET Z=E: LET E ... =W: LET W=Z
    405 LET Z=H: LET H ... : LET L=K: LET K=Z
    409 RETURN

    Battle Bunny Battle Bunny July 2013 Sinclair Basic
  • turbulence (aka astroball 2)aka the most difficult speccy game ever? love the first astroball but this one is a new dimension of dastardly control system [url]http://www.world…

    ... a try the keys are Z,X and "K" to make ...
    def chris def chris August 2013 Games
  • Redefine keys routineHow would I go about making a memory efficient redefine keys routine? I only want to define up, down, left and right and reserve key 'H' for pause.…

    ... )
    and 4
    jr z,down[/CODE]

    Not ...
    daveysludge daveysludge August 2013 Development
  • BIFROST* example: "Knights & Demons DX" source codeA package containing the source files of our multicolor game "Knights & Demons DX" is now available for download [URL="http://www.mediafire.com/?hbch…

    ... ' use spell
    IF k$="z" AND pikes > 0 THEN ...
    Einar Saukas Einar Saukas August 2013 Development
  • Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…

    ...
    inc b
    ret z
    ld a,0x7f
    and 0x20
    jr z,$-10
    ld a,c ...
    stephenw32768 stephenw32768 August 2013 Games
  • MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…

    ... or
    2254 RET Z vertical movement.
    2255 ... HL)
    226C RET Z Return if left movement isn ... HL)
    2272 RET Z Return if right movement impossible ...
    velesoft velesoft August 2013 Hardware
  • soundfx with BEEP or assemblyhas anyone got any soundfx they have made with BEEP this one does a fart noise BEEP 0.003,5 BEEP 0.003,7 BEEP 0.003,9 BEEP 0.003,7 BEEP 0.003,5 BEE…

    ... cursor and then SHIFT and Z to get BEEP
    slenkar slenkar August 2013 Development
  • melbourne drawIt could be said I am easly pleased,:grin: Very nice peice of software. I was realy impressed by its ease of use. I think a lot of time and effort w…

    ... br />
    [code]
    LCC43 DB #07,#38,#08,#9E,#46 ... 04,#80,#44,#80
    DB #C4,#88,#44,#08,#C6 ... 84,#04,#84,#44
    DB #8C,#04,#08,#9F,#45 ... 44,#82,#82,#8A
    DB #04,#08,#C5,#45,#87 ... 86,#C4,#08,#91
    DB #4E,#D6,#27,#8C,#E7 ...
    wibble wibble August 2013 Development
  • 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…

    ... $(2)-48: IF Z>9 THEN LET Z=Z-7
    60 ... POKE X,16*Y+Z
    70 LET X=X ...
    wibble wibble August 2013 Development
  • Spectrum 48k video and keyboard issueHi all, few days ago I experimented with battery supply for my speccy (48k issue 2), and I was measuring the voltage and how much current it used. A…

    ... the keys 2, w, s, z, symbol shift, l o, 9 ...
    dimewos dimewos September 2013 Hardware
  • Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…

    ... kid, I didn't learn Z-80 machine code, but I ... recently I decided to explore Z-80 machine language for the ... sake, I am using the Z-80 assembler that is built ...
    memrah memrah September 2013 Sinclair Miscellaneous
  • New game: JanosikI have a pleasure to announce my new game: Janosik In case if you wondered, Janosik (spelled Yanoseek in English) is a mountain folk hero,very popul…

    ...
    Space - attack

    Z - pause (press Space to unpause ...
    Ralf Ralf September 2013 Brand new software
  • New game: Krunel[IMG]http://www.speccy.pl/images/news/krunel_00.png[/IMG] Game name: Krunel Type: logical Author/group: [url]speccy.pl[/url] Platform: ZX Spectrum …

    ... - rotate block
    A or Z - drop block
    O - move ...
    tygrys tygrys October 2013 Brand new software
  • SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…

    ... /> ld (23606),hl
    jr z,ScrDone
    ld a,(de ...
    Battle Bunny Battle Bunny 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…

    ... equal to 15
    call z,.getlength_2; get additional length if ... ; advance past it
    jr z,.out ; return if accumulator empty ... and clear carry
    call z,.getlength; get additional length if ...
    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…

    ... , then decrease C
    JR Z,loop_high
    loop:
    LD ...
    Zerg Zerg October 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…

    ... ; here goes our filename
    db 'GOKUMAL.BIN',$ff

    db 0 ; screen$
    dw 16384 ... br /> dw 14729
    db 3 ; RAM 3
    ... br /> dw 9497
    db 0 ; main code (across ... br /> dw 35187
    db $ff ; end of list[/ ...
    Zup Zup December 2013 Development
  • Cheap(ish) C15 cassettes on ebayHi folks. I just thought i'd share this find, in case someone could use them: Box of 100 C15 tapes for ?149,- [url]http://www.ebay.co.uk/itm/12121…

    ... -audio-copy-/00/s/Mzc1WDUwMA==/z/2EIAAOxygLxSVc~E/$(KGrHqQOKp0FJF!T3e-GBSVc ...
    The_Bert The_Bert December 2013 Sinclair Miscellaneous
  • Z80AsmI've been using the Z80 PC Assembler 1.2 by Peter Hanratty and found that the RST 8 instruction assembles to 200. It should be 207. Ret Z is 200 wh…

    I've been using the Z80 PC Assembler 1.2 by Peter Hanratty and found that the RST 8 instruction assembles to 200. It should be 207.

    Ret Z is 200 which assembles correctly to 200.

    Are there any patches or working versions?
    rune rune December 2013 Development
  • Encyclopaedia Galactica (Remixed)Here it is at last, finally put to bed a few minutes ago: [url]http://www33.zippyshare.com/v/21829770/file.html[/url] This is the remixed version r…

    ... enabled. Keys are 2W90M with Z to teleport and H to ...
    jonathan jonathan December 2013 Brand new software
  • Z80: ABS(HL) functionI must be very tired but I cannot get my head around whether this function provides a correct implementation of a ABS function for a signed 16-bit va…

    ... /> BIT 7, H
    RET Z ; Already positive
    LD A ...
    BloodBaz BloodBaz January 2014 Development
  • Hunchback II loading screen by zombi2I'm about 3 years late (!), but found a new loading screen for Hunchback II by [URL="http://zxart.ee/eng/graphics/authors/z/zombi2/qid:2662/"]zombi2[…

    ... ://zxart.ee/eng/graphics/authors/z/zombi2/qid:2662/"]zombi2[/URL ...
    jp jp January 2014 Announcements
  • ZXinfoseek for Windows Phone 8Hi. Just wondering what is the best way to contact Martijn regarding permission to use the infoseek service (via Json) in an app I am writing. I ha…

    ... let you search the infoseek db. More features are being added ...
    polomint polomint January 2014 Chit chat
  • 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…

    ...
    dec h
    jp z, l_mulu_16_8x8

    l0_mulu_24_16x8 ...
    dec l
    jr z, reduced_tail_0

    ; ... br /> dec d
    jr z, reduced_0

    inc ...
    dec h
    jr z, reduced_1

    ; ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • IX register wonderings...***noob alert*** I'm doing a lot of these in my program: ld a,(ix+n) cp 0 jp z I know you can do things like this: dec (ix+n) but can you test …

    ... )
    cp 0
    jp z

    I know you ...
    Atari_Jetman Atari_Jetman February 2014 Development
  • PYROMANIA II: CHOPPER RESCUEJust in case you missed it... It is out! Get it at the Zx Sandbox [url]http://zxsandbox.blogspot.it/[/url] A very special thanks to R-Tape and Neil…

    ...
    Space-Pause
    the Z key will let you skip ... />
    QAOP, space->pause, z->skip screen

    gabriele amore gabriele amore February 2014 Brand new software
  • Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…

    ... : INC B
    65199: RET Z
    65200: LD A, 127 ... : AND 32
    65209: JR Z, 65198

    65211: LD ... : INC B
    65454: RET Z

    65455: LD A ... : AND 32
    65464: JR Z, 65453

    65466: LD ...
    Speccy_James Speccy_James February 2014 Development
  • Venturespeak Helplooking at the code from ZX Computing, October, November & December 1986. How do I make the code do more then 3 letters say 5. and could it be made …

    ...
    60046 CA7BEB JP Z,REPEAT
    60049 FE0D ...
    60051 CCFBEA CALL Z,CHECKN
    60054 FE00 ...
    60061 CCFBEA CALL Z,CHECKN
    60064 FE00 ...
    60084 CA55EB JP Z,DELETE
    60087 3A9DEB ...
    ardentcrest ardentcrest February 2014 Development
  • Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…

    ...
    ret
    print_attr_cache
    db 0

    print_attr_b_c
    joefish joefish March 2014 Development
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