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<1234567…34>
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... another command and a NMI routine. (values are read by counting NMI ... current menu uses the NMI routine to update the PIC and ...
    Dan Dare Dan Dare November 2016 Hardware
  • How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…

    ... returning from a m/c routine which sets all the registers ... the shadow registers) to particular values.

    Do I need ... when calling a m/c routine from BASIC, and reload them ...
    trellis trellis May 2003 Sinclair Basic
  • Competition: Sadistick routine on Spectrum ROMMy vote goes to BEEPER at #03B5 Let's ear you pick! :) And a great BOHHHHHHHHHHHHH to Dr Ian Logan & Dr Frank O'Hara for their description about the…

    ... about the parameters for that routine !!!! The words "and HL holds ... a spreadsheet and can get values for DE and HL directlly ...
    AE.Vasconcelos AE.Vasconcelos May 2005 Development
  • General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …

    ... I have written an XINPUT routine for the Spectrum (in BASIC ... br /> [*]Ability to edit existing values by presetting i$
    [*] ... the program is the XINPUT routine plus a test harness that ... br /> 9010 REM PSS-XINPUT Routine
    9020 REM Parameters:
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…

    ... />
    ; ----------------------------------------------
    ; ROUTINE: print_message
    ;
    ; prints ... />
    ; ----------------------------------------------
    ; ROUTINE: get_defined_key
    ;
    ; check ... will hold the values for the ...
    polomint polomint September 2011 Development
  • Store and restore attribute valuesI am needing ideas on how to write a machine code routine that will store/restore (more important to restore) attribute values to the 22528 area. I …

    ... code routine that will store/restore (more important to restore) attribute values ...
    daveysludge daveysludge May 2012 Development
  • Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …

    ... the X,Y,W,H values. I came up with the ... : PRINT AT 0,0;"Block Routine"
    160 GO SUB 200 ... STOP
    180 REM Block Routine
    190 REM x,y ... />
    Anyone got a better routine?

    Many thanks
    Paddy Coleman Paddy Coleman July 2014 Sinclair Basic
  • Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…

    ... Ritman's random number routine, published in Your Sinclair ... to 1 for 65535 values. (Values are all "INT ( ... bit random number generator routine I used in ... Head Over Heels. The routine is quite fast and returns ... VARS areas, this small routine can be merged into ...
    Battle Bunny Battle Bunny January 2017 Sinclair Basic
  • 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. …

    ... general purpose high score table routine. It stores 5 scores and ... /> RET ; exits the routine

    PRINTNUM: ; routine by J. Cauldwell

    ; Scores (default values)

    FIRST: DEFB 244 ...
    Alessandro Grussu Alessandro Grussu July 2017 Assembler
  • It's fitting...... that in the very month that the 25th anniversary of the Speccy falls on, I'm just finishing up making my first ever Spectrum peripheral. It's a …

    ... for things like adjacent memory cells being affected (adjacent on columns ... and then see if the values that were set are still ... ROM back in so the routine can checksum it.
    Winston Winston April 2007 Hardware
  • Faster Pussycat, yer man (UDG)Right we are almost into a game area. Ive started to play with UDG and by using bins and pokes I can redesign graphics to my hearts content. Now Im…

    ... holds the display data has values that directly relate to characters ... , at which point the PRINT routine goes through the corresponding character ... the text screen, or pixel cells onto the Hi-res screen ...
    hldswrth hldswrth May 2007 Sinclair Basic
  • Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…

    Ewww. Calling the ROM routine to plot a pixel? WTFingF?< ... . Is it pixels or character cells it is reduced by?

    (1) Read 8-pixel values from cell row
    Is ...
    Paradigm Shifter Paradigm Shifter July 2013 Development
  • Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…

    ... the colour codes for the cells. Each 3-byte element ... SEED32+2) ;based on a routine by Jon Ritman
    LD ... af,af'
    Cells: ;check for adjacent live cells
    ld ... a,(hl) ;transfer new cell values to g$()
    ld ( ...
    Battle Bunny Battle Bunny October 2014 Sinclair Basic
  • AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…

    ... the interupt driving the music routine as all effects that are ... repeats from the start, other values are useful for repeating somewhere ... s message with the right values to reset it's ... 512 byte table of 2byte values containing the instrument memory loaction ...
    cyborg cyborg October 2001 Sinclair Miscellaneous
  • LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding. I think that there might be more of these routines out there (where-ever-u-r). Isn…

    ... (if someone finds a faster routine please tell me..)

    Dr BEEP Dr BEEP October 2001 Sinclair Miscellaneous
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... code.

    The line routine that I have implemented is ... there have a fast line routine, plese email me.

    rtunes rtunes October 2001 Sinclair Miscellaneous
  • ZX-2-PC Interface : Is it dead ???Certainly not, but I had some problems getting the EPROM-reader constant. In my former threat I stated that it worked, well, it read ROM-values but n…

    ... worked, well, it read ROM-values but never the same by ... the rewritten ROM is a routine that, combined with a new ...
    Dr BEEP Dr BEEP September 2002 Sinclair Miscellaneous
  • Spectrum Games and their valuesHello to everyone, I want to put together a list (and site) of Spectrum games and their values (tape and roms) - I know prices will be a bit vague bu…

    ... ) of Spectrum games and their values (tape and roms) - I know ...
    davidholliss davidholliss May 2003 Games
  • URGENT programming question !I've gotta draw a line from machine code using the standard routine at 24B7, which expects the delta-X and delta-Y values on the BASIC stack. I put t…

    ... routine at 24B7, which expects the delta-X and delta-Y values ... BASIC stack. I put these values in the stack by calling ... this works only for positive values of BC. Anyone know how ...
    GOC GOC July 2003 Sinclair Miscellaneous
  • RGB values for Spectrum colorsDoes anybody know the true rgb color values for the spectrums 15 colors. I'll assume that black is 0,0,0 White is probably 255,255,255 But what are t…

    ... know the true rgb color values for the spectrums 15 colors ...
    Kiwi Kiwi August 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... the Stack, and Popped the values from one area to another ... /> RETI

    ; **** END INTERRUPT ROUTINE ***


    WRITECHAR:
    robpearmain robpearmain September 2004 Development
  • Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…

    ... .

    Basically the routine works by redrawing the tiles ... scroll position and call the routine. An increase of 1 ... pixels.

    The routine is designed to detect blank ... />



    * This routine shifts tiles into 4 positions ...
    dmsmith dmsmith September 2004 Development
  • Old Gameboy and the dead cellsRemember the original GameBoy from 1990? Well, I've still got one of those and played "Super Mario Land" on it for the first time in years. In the mi…

    ... level 3, a line of cells on the screen stopped working ...
    Spector Spector May 2005 Chit chat
  • Extended Microdrive FormatterHello all, After a few months on a steep learning curve, some heavy duty reading and plenty of trial and error I?ve written an extended microdrive f…

    ... +#2A) and UNUSED(IX+#2B) values. Why on earth would you ... think about those two values!!)

    This routine is compatible with ...
    jp jp December 2005 Development
  • ANN: Sam Revival issue 13 out now! [Sam CoupIssue 13 of 'Sam Revival' magazine is now out! Kicking off issue 13 of Sam Revival is a 14 page news section to give a lowdown on what's happening i…

    ... request for a machine code routine for palette changes using line ... the killer's damaged brain cells ... all 50 of them!"
    Quazar Quazar December 2005 Announcements
  • Assistance with IM2 routineI subsequently got a working IM2 routine.

    I subsequently got a working IM2 routine.
    chev chev March 2006 Development
  • Homing missile routine - help neededI am attempting to write a routine which will allow a missile to home in on a player. Basically the sort of thing you see in most shoot-em-up games. …

    ... am attempting to write a routine which will allow a missile ...
    dmsmith dmsmith March 2006 Development
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... it were, adjusting the register values to suit as if the ... that for the ROM loader routine for sure, but it must ...
    Laser Laser May 2006 Emulators
  • need a routine to fill the screen with 'stars'I need a routine that will randomly set pixels to give the illusion of a star filled back ground. Once drawn, the stars don't need to move. Not wanti…

    I need a routine that will randomly set pixels ... if anyone had such a routine in their code collection. I ...
    Mr Millside Mr Millside July 2006 Development
  • TZX format questionProbably a daft one, but I like to be sure of these things! For a block type 10 (a standard speed data block), the text states that all values in s…

    ... ), the text states that all values in square brackets *must* be ... value, and still be "ROM-routine-compilant" as it would simply ...
    trellis trellis September 2006 Development
<1234567…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
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Related Threads

  • LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding.<br /> <br /> I think that there might be more of these routines out there (where-eve…
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code.<br /> <br /> The line routine th…
  • Magzine valuesCould any1 give me an idea of an old '80s computer magazine value?<br /> <br /> I've seen on ebay the prices going for old Crash magazines, and altho…
  • what are exact current values on +2A's PSUI like to know what is written on an original +2A PSU nearby each voltage.<br /> I mean the current for +5V, the current for +12V and the current for…
  • Spectrum Games and their valuesHello to everyone, I want to put together a list (and site) of Spectrum games and their values (tape and roms) - I know prices will be a bit vague bu…
  • How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…
  • Speccy gaming valuesHi,<br /> <br /> small mindprobing poll, not to be taken too seriously, but perhaps revealing something about WOS users' profile...<br /> <br /> Cons…
  • Cells And Serpents by ASP SoftwareDoes anybody know where I can get this from. It was the first game I saved up for and bought....it was a very basic RPG.<br /> <br /> Its listed as M…
  • RGB values for Spectrum colorsDoes anybody know the true rgb color values for the spectrums 15 colors.<br /> I'll assume that black is 0,0,0<br /> White is probably 255,255,255<br…
  • Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling.<br /> <br /> As promised here is the code for the routine.<br /> <br /> It…

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