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Search Again :: Adv Search 407 results in 0.001s
<1…6789101112…14>
  • 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 didnt check further as Z80ASM looked OK.
    rune rune December 2013 Development
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... can't win 'em all! z80asm, with it's linker, is ...
    ccowley ccowley December 2013 Announcements
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... to the C pre-processor. z80asm has no problem with apostrophes ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Announcements
  • 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…

    The label syntax in z80asm always catches me out, I don't use it often enough to learn what valid labels look like. Then there's the character limit which often bites me as I tend to use absurdly_long_function_names_which_generate_errors(void) :)
    guesser guesser December 2013 Development
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... to the C pre-processor. z80asm has no problem with apostrophes ...
    ccowley ccowley December 2013 Announcements
  • 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…

    ... ;742644]The label syntax in z80asm always catches me out, I ... names. Once upon a time z80asm ran on Amigas, so at ... more recent assemblers have that z80asm lacks but of course, they ... creation of multiple sections, which z80asm cannot do but it is ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • 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…

    [quote]The next most important thing is creation of multiple sections, which z80asm cannot do but it is being modified now to make way for them.[/quote]
    Is this for the spectrum 128k?
    slenkar slenkar December 2013 Development
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... has already which is why z80asm accepts "EX AF,AF'" with ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Announcements
  • About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…

    ... two new bugs introduced in z80asm since the changes. I'll ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • What Spectrum projects (Software/Games/Utility)(Hardware)(Others) are you working on?So, basically that :) You dont have to give names or more clues if you dont want to ;) Also, if you are working on more than one, you can tell all of…

    ... most of the development on z80asm is about currently, but that ...
    Alcoholics Anonymous Alcoholics Anonymous 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…

    ... :
    ld a,(hl)
    REPT 8
    rra
    rl ...
    Einar Saukas Einar Saukas January 2014 Development
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... with the assembler
    // z80asm prog.asm -lz80.lib (approximately ... object)
    4. Run z80asm to link final executable (resolve ... between them and assemblers like z80asm, asz80, binutils and one ... this, and neither does z80asm for the time being.
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... stuff
    ORG 63232
    REPT 640 ;20 rows * 32 columns ...
    Ralf Ralf January 2014 Games
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... following with the assembler
    // z80asm prog.asm -lz80.lib (approximately ... to asm)
    3. Run z80asm on asm files to generate ... to object)
    4. Run z80asm to link final executable (resolve ...
    Dunny Dunny January 2014 Development
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... ability (such as z88dk's z80asm assembler); most of the tools ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ),de ;save bomber posn
    REPT 7
    ld a,(hl ... quarter of 10th line
    REPT 7
    ld a,(hl ... 9th line + 1 byte
    REPT 7
    ld a,(hl ... 10th line + 1 byte
    REPT 7
    ld a,(hl ...
    Einar Saukas Einar Saukas February 2014 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ),hl ;save bomber posn
    REPT 3
    pop de

    REPT 3
    pop de
    Einar Saukas Einar Saukas February 2014 Development
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ...

    ORG 63232
    REPT 640 ;20 rows * 32 columns ...
    Ralf Ralf February 2014 Games
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ),hl ; save bomber posn
    REPT 3
    pop de ; load ... AT 9,16;

    REPT 3
    pop de ; load ...
    Einar Saukas Einar Saukas February 2014 Development
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ... :
    LD B,20
    REPT 16
    PUSH HL
    Ralf Ralf February 2014 Development
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ... :
    LD B,20
    REPT 16
    PUSH HL
    Atari_Jetman Atari_Jetman 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 +…

    ... = 3328 bytes
    colour_map_A
    REPT 16,colour_map_A_block
    defs 24 ... /> ENDM

    colour_map_A_side
    REPT 12
    defs 2,00001000b ... /> ENDM

    colour_map_A_sound
    REPT 12
    defb 00000000b
    joefish joefish March 2014 Development
  • Need help: pasmo z80 x-compiler macrosIs anyone here an expert on macros for the Pasmo Z80 cross assembler? I need to know how to write a macro to assemble "DW link", then redefine link t…

    ... local labels within macros or REPT blocks or the like, so ...
    joefish joefish March 2014 Development
  • New game: Flappy Bird ZXAt last I finished it :) [B]Flappy Bird ZX[/B] [IMG]http://i62.tinypic.com/2f0517q.png[/IMG] The download: [url]http://www.sendspace.com/file/odftv…

    ... char of left edge
    REPT 8
    LD (HL),C ...
    Ralf Ralf April 2014 Brand new software
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    ... is ...

    [CODE]
    REPT 32
    ldi
    ENDM ... )
    ld c, h
    REPT 32
    ldi
    ENDM ...
    polomint polomint April 2014 Development
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    ... /> line_loop:
    pop de
    REPT 32
    ldi
    ENDM ...
    Ralf Ralf April 2014 Development
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    ... /> line_loop:
    pop de
    REPT 32
    ldi
    ENDM ...
    polomint polomint April 2014 Development
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    I'd still recommend using REPT macros to generate the screen table, rather than a chunk of code. It saves space overall.
    joefish joefish April 2014 Development
  • 30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…

    ... this:

    [CODE]
    REPT (ROWS 0 TO 23)
    Einar Saukas Einar Saukas May 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…

    ... /> pop de
    REPT 32 ; Enter ldi 32 ... /> pop de
    REPT 32 ; Enter ldi 32 ... pop de
    REPT 32 ; Enter ldi 32 ...
    richdotward richdotward June 2014 Development
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  • incbin in z80asmUsing z80asm (as shipped with Z88DK) is it possible to include binary files (i.e. incbin)? If so how?
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