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Search Again :: Adv Search 1000 results in 0.004s
<1…10111213141516…34>
  • Must be missing the point - machine code... Hi Folks, Trying my hand at machine code again but falling at the first hurdle. I hand crafted the following to run at address 62000 and the co…

    ... :
    LD (HL), A
    INC H
    DEC C
    LD H, &00
    INC L
    NOP
    DEC ...
    Paddy Coleman Paddy Coleman September 2016 Development
  • Accessing +3 DOS with DivIDE enabledI'm thinking about making a tool that copies files from a FAT partition to a IDEDOS partition. Currently, I've got two problems: - Getting the ESX…

    ... ESXDOS SDK (that elusive esxdos.inc file) to know what RST ...
    Zup Zup September 2016 Development
  • sdcc inline assembly wtf..So, I'm trying to get division to work. By googling I've found one division algorithm that's quoted in several places, but can't seem to get it to wo…

    ... , _done
    sub c
    inc l
    djnz _loop
    _loop:
    inc de
    sbc hl, bc ...
    Sol_HSA Sol_HSA September 2016 Development
  • Why doesnt this work???Simple piece of code wont do as it should, just want to fill the top 22 lines of screen with an attribute value (150) but it wont have any of it. Som…

    ...
    ld (de),a
    inc de
    djnz loop
    daveysludge daveysludge October 2016 Development
  • Graphics program in AssemblyHi so I think I'm getting the hang of this so I've done this program. It writes directly to the screen. I'm using ZX Spin. [code] LD HL,16384 LD B,…

    ...
    LD (HL),170
    INC HL
    DJNZ loop
    ivanb303 ivanb303 October 2016 Assembler
  • Starting lives for Space Raiders ?:) I was wondering if anyone could point me in the right direction for this please. I've examined the code quite a bit but I'm unable to quite figur…

    ... effect (changing DEC A to INC A is an easy way ...
    spider spider November 2016 Games
  • ZX Spin and a question or two......Not really used Spin before since Spectaculator covers everything I need - except now I have need of an easy to use assembler. Downloaded several, n…

    ... ,EXIT
    RST #10
    INC HL
    JR LOOP
    DEATH DEATH November 2016 Emulators
  • Code optimisation! 16bit number to 5 digit stringJust for interest this one, any thoughts on how to make this as fast as possible? Little optimisations to this routine or a complete reimagining? …

    ... of string marker
    lp: inc (hl) ;increase string number
    R-Tape R-Tape December 2016 Development
  • Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…

    ...
    LD (HL),A
    INC HL
    DEC BC
    ivanb303 ivanb303 December 2016 Assembler
  • Z88DK v1.99B ReleasedAt Sourceforge: https://sourceforge.net/projects/z88dk/ It's been a year since the last release so it was time for another. This is another tran…

    At Sourceforge:
    https://sourceforge.net/projects/z88dk/

    It's been a year since the last release so it was time for another. This is another transitional release on the way to version 2.0 and hopefully we'll get there for the next one ...
    Alcoholics Anonymous Alcoholics Anonymous January 2017 Announcements
  • Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …

    ... retrieve attribute address
    inc hl ; next attribute

    nextpix: inc ixh ; 08ts ; next pixel down ... retrieve attribute address
    inc ix ; 10ts ; next attribute ...

    nextix: inc ix ; 10ts ; next data ...
    FrankT FrankT February 2017 Assembler
  • A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…

    ... that’s not possible, [b]inc l[/b] can be replaced ... with [b]inc hl[/b], which is two ... C with first byte
    inc l ;advance to next byte ... ;place it on screen
    inc l ;next char cell to ... cell to the left
    inc h ;down one line
    Ast_A_Moore Ast_A_Moore February 2017 Development
  • SpecBAS 0.900 ReleasedAgainst my better judgement, here's 0.900. It's got lots and lots new, but mostly the new shiny is the editor. You can indent your code, you can e…

    ... if you like
    Inline inc/dec/mul/div to LET ... .
    Fixed an issue with INC and a range not including ...
    Dunny Dunny April 2017 Sinclair Basic
  • New language for spectrumI made a halfway language between assembly and Basic here is some example code: [code] INFLOOPSTART ifram(scrolla=1) print(intera) endif…

    ...
    WriteRam(HL,0)
    INC H
    endif

    slenkar slenkar April 2017 Development
  • ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…

    ... ; 7t - get col check
    inc hl ; 7t
    ld (_ulzfa080 ... ; 7t - get col add
    inc hl ; 7t
    ld (_ulzfa090 ... full length of copy
    inc hl ; 6t - next
    ... /> ret ; 10t
    _ulzfa060:
    inc a ; 4t - down one pixel ...
    TomD TomD April 2017 Development
  • Spectrum clear outI'm clearing out my old Spectrum stuff, far too many to mention mostly in very good condition, will list titles on ebay on request. Average price …

    ... />
    Average price £3-4 inc postage.

    If anyone ...
    daveysludge daveysludge May 2017 Sales
  • Mojon Twins MK2 and lighting effectsDoes anyone have any experience in getting the overlay.h working in the MK2 engine. There were several games written in the churro that used the ove…

    ...
    ; Next line
    inc de
    inc de
    ld bc ...
    ld (hl), a
    inc hl
    ld (hl), a ...
    ld (hl), a
    inc hl
    ld (hl), a ...
    ld (hl), a
    inc hl
    ld (hl), a ...
    andydansby andydansby June 2017 Development
  • what is wrong with this loop?here is the loop: ld b,12 ld a,31 ld de,right_screen_array right_screen_array_label call charaddress ex de,hl ;de now contains screen address…

    ...
    ld (hl),e
    inc hl
    ld (hl),d ...
    inc hl
    ex de,hl ...
    slenkar slenkar July 2017 Assembler
  • High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …

    ... ; print the character

    INC HL ; increment HL...
    LD ... , make it a digit
    INC A ; increment digit
    JR ... the character to print
    INC DE ; point to the next ...
    Alessandro Grussu Alessandro Grussu July 2017 Assembler
  • Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…

    ... 60008 E6 07
    inc a 60010 3C
    ... 60031 CB 08
    inc d 60033 14
    ... ),a 60041 77
    inc e 60042 1C
    ... CD B6 EA
    inc e 60051 1C
    ... ret z 60095 C8
    inc c 60096 0C
    bit ...
    Paddy Coleman Paddy Coleman August 2017 Development
  • z88dk adventure problemI downloaded the example https://drive.google.com/file/d/0B6XhJJ33xpOWaHYxek15WXJyQVU/view?usp=sharing I changed NUM ROOMS to 13 here is the who…

    ... -create-app -pragma-include:zpragma.inc
    slenkar slenkar August 2017 Development
  • Using BASIC from Machine CodeHi Folks, Came across a very interesting article by Toni Baker in Your Spectrum: http://www.users.globalnet.co.uk/~jg27paw4/yr11/yr11_66.htm …

    ... ,130
    CALL 5717
    INC HL
    EX DE,HL ...
    Paddy Coleman Paddy Coleman August 2017 Development
  • 1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …

    ... (de),a
    inc e
    djnz backup_lp0 ...
    inc l
    bit ... ld l,c
    inc e
    bit 5, ...
    Arkannoyed Arkannoyed September 2017 Development
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ... ;poll keyboard upon entry
    inc e ;if E=FFh (no ... key is pressed), INC E will result in 0 ...
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • ZX Spectrum keyboards : all and everything about them and how can the Speccy keyboard be improved? This discussion can include of all the main types of Spectrum keyboard from the past (inc addon / aftermarket) , their strengths and weaknesses , …

    This discussion can include of all the main types of Spectrum keyboard from the past (inc addon / aftermarket) , their strengths and weaknesses , and possibilities for improvements with today's new technology.
    harriusherbartio harriusherbartio October 2017 Hardware
  • No-tearing (“vsync”) Full Screen FadeSeeing as most screen fades exhibit visible tearing, I wrote my own routine which does away with that problem. Simple, effective, short, and fully re…

    ... (hl),a ;write attr
    inc hl ;next cell
    ld ...
    Ast_A_Moore Ast_A_Moore December 2017 Development
  • How to load assembly language programs onto a ZX SpectrumHello, I have recently started learning Zilog assembly for the ZX spectrum, and have written a game and some simple programs. These all work fine in…

    ... /> ld (hl), 255

    inc h
    ld (hl), 129 ...

    inc h
    ld (hl), 129 ...

    inc h
    ld (hl), 255 ...
    wilson wilson December 2017 Development
  • The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…

    ...
    ld (hl),$c3
    inc hl
    ld de,int_routine ...
    ld (hl),e
    inc hl
    ld (hl),d ...
    Ast_A_Moore Ast_A_Moore February 2018 Development
  • Spectrum Show 71I hope this is the right place for this. I notice that the Spectrum Show 71 is up on YouTube but not announced here as previously. Why? Be that as…

    ... being for sale at $166 inc postage which if true means ...
    mik3d3nch mik3d3nch March 2018 Sinclair Miscellaneous
<1…10111213141516…34>

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