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<1…3456789…34>
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... is 2-byte, 7 blank pixel rows occupies 14 bytes since there ... sprite column has 7 blank pixel rows above it to accommodate vertical ... act as the seven blank pixel rows above the succeeding column's ... to supply the 7 blank pixel rows.

    Then "temp" is ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…

    ... squeezed on by selectively dropping pixel rows, mainly above the invaders and ...
    obo obo May 2006 Emulators
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... resolution from the advertised 64x44 pixel resolution to 256x192. Despite likely ... 't selectable down to the pixel level, not as many colors ... give you is a quick jump on the competition in writing ...
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Sinclair Miscellaneous
  • The Podcast recommendation threadI listen to the Chris Moyles podcast sometimes. Can anybody recommend any other good podcasts? Cheers! BigBadMick

    ... they discuss the amazing per-pixel shading effects of their latest ... , or even convince themself to jump off a cliff to end ...
    Collie Collie September 2006 Chit chat
  • Games that could have been great...there are a few games that I've always thought that where simply briliant in concept, but for some reason or another they where just crapp... most o…

    ... coming so you knew to jump... the way it is you ... have to more or less jump at end of most screens ... , where there`s a 6 pixel gap or something.... it`s ...
    CKay CKay November 2006 Games
  • Scrolling Loader CounterPlease can someone help me with writing a scrolling counter for a loading system. I like the Hewson counter so i`ve taken the font from zynaps loade…

    ... /> inc h ;move one pixel down
    djnz repeat ... nz, endless_loop ;NO, then jump
    ld hl, first_byte_of_gfx ... start
    jp endless_loop ;jump
    [/code]
    ...
    Fikee Fikee November 2006 Development
  • YSRARY - I, Of the MaskI've never ever seen this game before and I was watching the excellent YSRARY videos and saw this amazing 3d game from 1985 with what looked like sol…

    ... miner and jsw..left right jump.[/QUOTE]

    That's ... gameplay. The gameplay actually involves pixel perfect jumps, timings, solving puzzles ...
    Arjun Arjun February 2007 Games
  • Good 128k games?As I only got my +2 in the twilight years of the spectrum and then discovered cider and Doctor and the Crippens (punk band), I never really had many …

    ... of the machine one single pixel rows and close together "could" give ...
    The Starglider The Starglider March 2007 Games
  • TommyGun 0.9.x updates** Should be available via the utilities page soon! Please be patient :-) ** I'll be posting all future updates in this thread, instead of creating …

    ... />
    [code]
    [ ] OUTPUT PIXEL DATA (yes/no checkbox)
    pixel data (or vice versa ... ).

    The pixel data is in column major ... that is, eg, 2 rows x 2 cols in size ... actually drawing it as 2 rows x 3 cols and ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • And It's Arrived...The ZX Spectrum is now 25 years old. Yay!!! Happy Birthday. Necros.

    ... just gotta position the jump from the right pixel perfect (or as ... quirky features go pixel imperfect), I'm not really ...
    dm_boozefreek dm_boozefreek April 2007 Sinclair Miscellaneous
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... ) and repeat for all char rows until the 7th (LLL = 111 ... added. This is the next pixel line below the top one ... by single pixels, convert from pixel coords to attribute coords, etc ...
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... you are and where to jump to start drawing. Definitely still ... layout for both its 6k pixel area and the 6k attr ...
    obo obo May 2007 Development
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... get 224 cycles per pixel row (this includes left ... see tearing along one pixel row as the back ... variable amounts to get smooth pixel movement) in that time. ... word but more like pixel-placed UDGs. What I ... to draw complete(ish) pixel rows in top to bottom order ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • First steps in Z80 machine codeI never got into machine code much back when I had a speccy, as I didn't have any development tools at the time. The only machine code I'd previousl…

    ... a 8x8 character at any pixel row on the screen. Made ... at y-coord specified in pixel rows and at x-coord specified ...
    Arjun Arjun July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... the djnz once for each pixel row, I think you need ...
    bpoke(0xd1d1, 195); // POKE jump instruction at address 0xd4d4 (interrupt ... ); // POKE isr address following the jump instruction
    #asm
    ei ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…

    ... ).
    ld de, 32 ;Perform jump to next char boundary
    pixel line aligned address
    dec ...
    Arjun Arjun July 2007 Development
  • Z80 Developer ConsoleHi, This is a project I have meaning to do for ages, recently had a kid, had some time off work (as a software developer) and surprisingly had a bit…

    ... , it just sets the default jump position and this can be ... instructions you can highlight the rows in the listview to show ... /> You could even allow the rows to be expanded and shrunk ...
    Kiwi Kiwi August 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ...
    // check all four mountain rows inside plot

    do ... // MTN_*
    uchar x_offset; // horizontal pixel offset within plot

    // check all four mountain rows inside plot

    do ...
    Alcoholics Anonymous Alcoholics Anonymous August 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... plot row contains 4 mountains rows, consisting of 4 mountains ... MTN_*
    uchar x_offset; // horizontal pixel offset within plot

    rows (in which one mountain ... Since there are four mountain rows in each plot row, ...
    Alcoholics Anonymous Alcoholics Anonymous August 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... is divided into 20 mountain rows (so that there are ... 4 mountain rows in each plot row) ... // MTN_*
    uchar x_offset; // horizontal pixel offset within plot

    rows the plot occupies and ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • hardest level on manic miner?Thanks to the snapshot feature on the emu, I have now completed this game. back in the 'old days' I couldn't even get past Eugene's Layer, which is p…

    ... though, there's a pixel perfect jump required onto a moving platform ... beach ball things when you jump off again.

    Everything ...
    Matt_B Matt_B September 2007 Games
  • Trying to emulate the DivIDE on SpinI have this .iso image that's supposed to be used on a cf card: [url]ftp://ftp.untergrund.net/users/gasman/zx/divip_let_forever_be.zip[/url] Since …

    ... in the lower two thirds, pixel patterns that look like they ... the screen and have stray pixel rows from elsewhere in them. (Zxbruno ...
    gasman gasman September 2007 Emulators
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... permanently empty column (plus two rows) around it to eliminate bounds ... was a valid move, then jump out of both inner and ... move must have been invalid. Jump back to the INPUT statement ...
    Digital Prawn Digital Prawn September 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... repeatedly bounces alternately between two rows of bricks, knocking many out ...
    Digital Prawn Digital Prawn November 2007 Development
  • Letters with accents on the SpectrumIs there any way to type letters that have accents (for example ? ? ? etc) on the Spectrum? Maybe it's really obvious but I don't know how.

    ... a block of 8 bytes (pixel-rows), and (re)write a character ...
    andrewbroad andrewbroad November 2007 Sinclair Miscellaneous
  • another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)

    ... he didn't like the pixel perfect jump games, which does include ... then] I have never enjoyed pixel perfect games, it limits the ...
    Fizza Fizza December 2007 Games
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... under the scrldn heading), one pixel line apart, with various filters ... if the count needs to jump back by an amount other ... go back to the previous pixel line. The code works, so ... screen scroll down by one pixel.
    bigjon bigjon February 2008 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... ; hl = de = destination address for pixel row copy
    ld h ...
    pop de ; address of pixel row above becomes the destination ... times we fall through the jump and 7/8 times we ... take the second jump, etc). The "enter" code takes ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... 10 bytes from another pixel row but one character ... has scrolled but some pixel rows underneath it haven't.< ... perfectly lined up with pixel rows and you can do ... copy operations in pixel row order easily. push ... stack pointer with the next pixel line up, ie $ ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • Dead Pixels.I wandered into Comet today to look at their laptops. Not my favourite shop, but it beats next/boots/mothercare on Silverlink. Last time I was in …

    ... reading about the whole "dead pixel" issue when TFT screens started ... caused me to miss the jump and plough straight into Eugene ...
    MattLamb MattLamb March 2008 Chit chat
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