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  • "ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…

    ... function to convert any value to always positive ( ... when executing a single-value function - there are more ... small decimal in the string that the number display ... to print VAL of the string.
    - no exponent ... of a string called f$ and a numerical value f ...
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Basic
  • Fuse 1.3.2 releasedA new release of Fuse, the Free Unix Spectrum Emulator, is now available at the SourceForge project: https://sourceforge.net/projects/fuse-emulato…

    C is not great at strings, but a string is a sequence of characters with a 0 value byte as a terminator which is why you can't substitute a single byte char in its place.
    Fred Fred March 2017 Emulators
  • 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…

    ... ;;
    ;; move de back to attr space
    xor d ; 4t ... the screen char by char (attr+8pixelrows)
    // Can compress ... -31 means just paste literal string length 1-32
    // ... start to start of buffer attr space
    (*store_c)=0; // ...
    TomD TomD 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…

    ... way address conversion 'screen->attr->screen', likely shrinking the ... be stored as an absolute value in the data, as it ...
    Hikaru Hikaru 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…

    ... way address conversion 'screen->attr->screen', likely shrinking the ... be stored as an absolute value in the data, as it ...
    TomD TomD April 2017 Development
  • Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…

    ... arguments are a number or string [i]expression[/i], or a ... , it requires a numeric or string variable, followed by an = symbol ... the same type (number or string) as the initial variable.

    It will return the value held in A, plus one ...
    Dunny Dunny May 2017 BASIC
  • How do you use CHR$ properly in a string ?So I trawled through the manual and found the bit on the character set. It says CHR$ 17 gives you paper control and CHR$ 16 gives you ink. But how do…

    ... the string which is followed by either the wrong number or value ...
    Battle Bunny Battle Bunny May 2017 BASIC
  • z88dk : Support FunctionsJust a quick one here, I am looking to doing some dirty dirty code with C and load a screen$ file from the disk using "system( command )" - yes I …

    ... you do this kind of string manipulation in ASM / BASIC ... /> [/quote]

    The string manipulation and sorting of files ... />
    Setting the value of basic string variables can be done ... and appending to a basic string initialized to "" (which will ...
    Alcoholics Anonymous Alcoholics Anonymous June 2017 Development
  • What's the FUSE keypresses for BREAK?I am forever getting stuck in a program with no STOP option, usually mine that I forgot to put that option into and ran a test forgetting the consequ…

    ... solution of spotting a sentinel value is the correct one.
    string inputs, just numerical ones. Well ...
    thricenightly thricenightly July 2017 Emulators
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... /> // palette index for this pixel value in the bmp is the ...
    Alcoholics Anonymous Alcoholics Anonymous August 2017 Brand new software
  • Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…

    ... the whole of the bottom attr row to BLACK+BLACK+BRIGHT ... also blank out the top attr row (just BLACK+BLACK) to ... attributes as markers if the value of either ink or paper ...
    Hikaru Hikaru August 2017 Development
  • Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…

    ... ]

    ld de,$710f ;ATTR color 71h into D
    cp d ;[4]test for ATTR color
    jp nz,1 ... /> cp d ;[4]test for ATTR color
    jp nz,1 ... if it reads the same value both times. Technically, it should ...
    Ast_A_Moore Ast_A_Moore September 2017 Development
  • Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…

    ... the sides) that return the value of the rightmost attribute on ... the line. Expecting this value to be returned two or ... some other combination such as attr+bmp or 2x bmp.
    Hikaru Hikaru September 2017 Development
  • Is there a way to suppress error R Tape Loading Error in Basic when trying to load only part of fileHi, is there a way to suppress error R Tape Loading Error in Basic when trying to load only part of file. E.g.: I have a Tape-Code-File Start f…

    ... force FP form declare the value as value/1, either in the ... 00
    [/code]
    The string "1000bytes" starts at $5e78 with ...
    Battle Bunny Battle Bunny September 2017 Sinclair Basic
  • Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …

    ... the string it self


    [spoiler][code]
    ; FIRST value ... must be set to the string before calling this routine
    value will be skipped so set ... duration with a 2 byte value for"
    defm cr, " ...
    Scorpion_Realities Scorpion_Realities October 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…

    ... /> ld de,ctrs ;address of string to be printed
    ld ... -ctrs ;length of string
    call 8252 ;print string

    ;A ... ;necessary for CPIR
    ;any value greater than 27h (i.e ...
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…

    ... you can see, the ATTR-T, ATTR-P and BORDER variables are ... all initialised to the same value ... . Since only bits 3-5 of BORDER are relevant; and ATTR ... -T and ATTR-P use the standard ...
    GReW GReW November 2017 Hardware
  • Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…

    ... understand each colour has a value ranging from $01($00?) to ... /> For the BORDER, P-ATTR and T-ATTR system variables; the flash ...
    GReW GReW November 2017 Hardware
  • Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…

    ... editor
    Looks a long string of HEX data. (??)
    [/quote ... is correct. It displays the value 0x3e at address 0x11cc, which ... up. In this case, the value at the next address (0x11cd ...
    Ast_A_Moore Ast_A_Moore November 2017 Hardware
  • Fast Binary to Text DisplayI've done this thing that takes some memory contents and converts it to a Binary version of 0's and 1's on screen. However, I've no idea what to use …

    ... are represented by a continuous string of memory addresses (a file ... a counter to hold the value of 6144 (the length of ... byte (register D) reaches the value of $58. Once it does ...
    Ast_A_Moore Ast_A_Moore December 2017 Development
  • Need Some Basic HelpHi all, I’ve decided to give programming in Spectrum Basic a go again (bit of nostalgia trip!) and I’m trying to develop a CYOA style game. How…

    ... sets RAMTOP to the normal value for a 48K Spectrum, then ... in the (initially empty) DATA string. (RESTORE points system variable DATADD ...
    Battle Bunny Battle Bunny April 2018 Sinclair Basic
  • Printing text using direct screen addressingHaving some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwell…

    ... value of #5C01.

    [code]
    void __CALLEE__ PrintStr2 ( char *string ...
    Hikaru Hikaru December 2018 Development
  • Dynamite Dan disassemblyOkay, I got fed up of going through the frankly arcane Technician Ted code (which is clearly designed for speed, space and elegance, and balls to rea…

    ... , AX points to the return value, DS:SI is often a ... on Starquake. The "print a string" routine at $D3C1 is a ... routine and then has the string inline immediately afterwards, FF terminated ...
    Ritchie333 Ritchie333 January 2019 Assembler
  • what does the USR command actually stand for?im sure its an acronym, if i remember rightly. ____ sub routine?

    ... standard method to input some value into the machine code.[/quote ... 1 and so pass that value to the routine.
    Add ... LPRINT command would send a string to your machine code. It ...
    joefish joefish June 2019 BASIC
  • is there a way of adding a define procedure command to zx basic?i know you can add things like renumber, using randomize usr to call it, but this would have to be keywords. this would be so helpful in basic as you…

    ... expression (A) followed by a string expression
    (A$) are ... size. Line 9030 prints the string which has been
    ... /> POP_n This instruction causes a value (n) from the PROCedure /
    value on to the PROCedure /
    Battle Bunny Battle Bunny July 2019 Sinclair Basic
  • Breaking the Ice (another 1 line BASIC game)@Patters pushed me to do it... This is another 1-line BASIC game, with the same restrictions discussed. The mission: to save 10 penguins that a…

    ... OFF in the s$ string ("===") so its ATTR will be higher than ...
    IvanBasic IvanBasic September 2019 Brand new software
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