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Search Again :: Adv Search 1000 results in 0.029s
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  • Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.

    ... . Quite why it didnt scroll smoothly horizontally like it did ... vertical scrolling.

    To scroll 1 pixel vertically, you just ... on every byte of the display you want to scroll and OR ... column data once after every 8 pixels of scrolling - although ...
    ccowley ccowley February 2011 Games
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ...
    ;; 0x08 - left
    ;; 0x09 - right
    ;; 0x0a - down
    ;; 0x0b ... ','5'
    .byte '0','9','8','7','6'
    .byte 'p','o','i ...
    tstih tstih March 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... (the "jp (ix)" instruction takes 8 cycles), slow 16 bit accumulators ... , a pair of slow 8-bit registers and less commonly ... at the same time, the right thing to do is probably ... such a thing :-) -- a circular byte buffer that can tolerate simultaneous ...
    Alcoholics Anonymous Alcoholics Anonymous March 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... it's 25fps? can you scroll faster? Eg. 2pixels or 3 ... block moving one cell from right to left has to be ... it only needed 4 or 8 frames of animation instead of ...
    joefish joefish April 2011 Development
  • SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…

    ... nz, vchrq ; code, move down 8 pixels and open channel 2 ... 2, (iy + 0x30) ;+ see if 8-bit mode is set
    byte is
    djnz rotlp ; in the right colour.
    add a, 8 ;
    ld h, a ;
    8 pixels and back to
    chev chev April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... writing a short routine to scroll down the whole screen with ... a full rotation in 256 byte steps. Using this trick for ... RAM as strings it took 8 seconds; using a PEEK/POKE ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... where it's working to byte addressing, even though it' ... data is being copied from byte-addresses, or it can ... s writing to over by 8 pixels into the black ... . That could mean the 8-pixel wide pole will slide ... wouldn't have to slide right across one word and into ...
    joefish joefish April 2011 Development
  • So what is the best Spectrum?I've had a search and even though i can remember a similar thread somewhere I'll twist it a bit. Whats the best "unmodified" Spectrum? (modification…

    ... clock that generates the right video sync for NTSC ... clock that generates the right video sync for PAL ... +3 Basic / +2A: 1562448 (8 hours, 40 minutes)
    128 ... Basic / 128K: 1574523 (8 hours, 44 minutes)[/code]
    byte I/O decoding so ...
    chev chev April 2011 Sinclair Miscellaneous
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... Return control code, move down 8 pixels
    ;and open ... screen one byte at a time and in the right colour.
    LD (HL),A
    RST 8
    DEFB 4

    SUB 12 ; was 8
    LD (YPOS),A
    chev chev May 2011 Sinclair Basic
  • New game! Nanako in CJMC for ZX81!Yup, that's true. We've been busy in crafting a nice, small, simple library to code games in text mode (this is, standard, unexpanded) for the 16K ZX…

    ... game in Hi-Res.
    Right now I am also working ... /> db 126 ; BASIC token. 5 byte FP number to follow.
    hires: ld b,8
    delayhi: djnz delayhi
    Dr BEEP Dr BEEP May 2011 Brand new software
  • enJine: a fast tilemap enginetile engine based on excellent work by Joffa Smifff. here you can download first tech demo. [url=http://ketmar.no-ip.org/tmp/enJine.tap]Get It Now![…

    ... uses 64x64 map with one byte descibing two tiles (so it ... repeatable middle tile and a right tile. At the moment I ... different tiles per row (possibly 8 if I decide to use ... map will be stored as 8 x 8 chunks. As the viewport ... be OK on memory and right now it's more ...
    kphair kphair May 2011 Development
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... vchrq ; control code, move down 8 pixels and open
    call ... (df_cc), hl ;
    ld b, 8 ;

    prnlp:
    ... /> djnz rotlp ; each byte is in the right colour.

    ... /> ld a, (coords_y) ;
    sub 8 ;
    ld (coords_y), a ;
    chev chev May 2011 Sinclair Basic
  • fast font engine possible?inspired by the recent "proportional font" thread for zx basic and ideas for gui and having done some of the work on this in the past i wonder if it …

    ...
    jr c,.prcNoScroll
    ; scroll the whole screen one line ... takes full 8 lines on the screen), and 0th byte is used ... for width information (so one character still takes 8 ...
    Ketmar Ketmar May 2011 Development
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... mouse is at the far right side of the screen usually ... nice format where each byte is next 8 pixels and rows of ...

    draw_bitmap(byte *bitmap, rectangle *rect_in_bitmap, byte x_on_screen, byte y_on_screen) and
    tstih tstih June 2011 Development
  • ZXDS Diary concept...Hi Folks, I have been a fan and long time user of Psion PDAs - alas they are no more and my trusty 3mx is on its last legs. As I almost have my han…

    ... height is 8 bits. its width ends on a byte boundary (so ... that you don't bleed right). the ...
    tstih tstih June 2011 Development
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... H is affected by high-byte addition". However, this ... explicitly that only high-byte addition affects the H ... correct? If Young is right, does the same rule ... black screen and cursor. Right now, for the sake ... take the most significant byte for the new value ...
    ccowley ccowley June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... is correct? If Young is right, does the same rule ... memory). Let's call it byte pixels = speccy[16384+offset]. ... equivalent ink colour (basically define 8 + 8 integer values (0xffffffff = white ... ... to mirror the speccy 8 non-bright + 8 bright colour values). ...
    Arjun Arjun June 2011 Emulators
  • Help Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…

    ... complete.
    [/QUOTE]

    Right, the 48k poke above is ... :48 too with Poke 28599,8 ($6fb7,$08 ).

    ... : Poke 45268,108: Poke 45679,8

    ($b0d2,$b7: ... /> ========================

    Poke 28599,8: 41287,183: Poke 41288,32 ...
    Bandit Bandit June 2011 Games
  • Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…

    ... For one thing, single-byte values are easier to work ... br /> [code]ld (de), 6*8 ; copies attribute = PAPER 6 to ...
    ld hl, 23295 ; bottom right

    DrawOoze
    < ...
    ld (de), 6*8 ; copies attributes = PAPER 6 to ...
    ooze48k ooze48k July 2011 Development
  • Stuck: Multipying 15 by 32 using RRCA in A reg[deleted]

    ... you're starting with an 8-bit number and turning ... want for the high byte and low byte.

    So ... shifted off the right end into the low byte of your ... five bits into the high byte. Let's say you ...
    will give you the byte to go in E, while ...
    jonathan jonathan July 2011 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... b ; reset AT_FLAG
    rst 8 ; error "B Integer out of ... ; mask to change right half of the screen byte
    SCR_LEFT:
    byte is always blank
    ld b, 8 ; execute loop 8 times ...
    Einar Saukas Einar Saukas July 2011 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... b ; reset AT_FLAG
    rst 8 ; error "B Integer out of ... ; mask to change right half of the screen byte
    SCR_LEFT:
    byte is always blank
    ld b, 8 ; execute loop 8 times ...
    Einar Saukas Einar Saukas July 2011 Development
  • Need help transferring a file to a Spectrum .dsk fileHello, I was wondering if anyone can help me transfer a file that I have into a spectrum *.dsk file? The background to this request is that I have r…

    ... br /> hp = header block parity byte
    dd = data flag ... block & data block parity byte follow (not shown)
    ... CODE start address).
    8. Load TAP file as binary ... + 1 for flag byte but excluding parity byte.
    In hex ... for you[/url], right? :-)
    gasman gasman August 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... ports addressed by 8-bit or 16-bit numbers? Right now I ... the whole point: because upper byte doesn't matter (I think ... well (different values of high byte identify different half rows of ...
    PeterP PeterP August 2011 Emulators
<1…14151617181920…34>

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