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<1234567…34>
  • reversing an LFSRWhat's the correct way of reversing an LFSR so that it produces the same numbers but in reverse order? The little BASIC program below shows a test I …

    ... xor2
    40 LET a$=CHR$ (xor+48)+a$( TO 4 ...
    Battle Bunny Battle Bunny February 2014 Development
  • GEDit syntax highlighting for Boriel's ZX BasicHi! I just tailored this syntax highlighting code and would like to share with he community. Suggestions are always welcome, though the file works w…

    ...
    byval
    cast
    chr
    circle
    cls
    pkersey pkersey February 2014 Development
  • Venturespeak Helplooking at the code from ZX Computing, October, November & December 1986. How do I make the code do more then 3 letters say 5. and could it be made …

    ... /> 60074 329DEB LD (CHR),A
    60077 FE0D ... 60087 3A9DEB LD A,(CHR)
    60090 FE07 ... 60114 3A9DEB LD A,(CHR)
    60117 19 ... 60229 3A9DEB LD A,(CHR)
    60232 D7 RST ...
    ardentcrest ardentcrest February 2014 Development
  • From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…

    ... v$(pos to pos+1)=chr$(byte)... but takes same time ...
    Hark0 Hark0 March 2014 Sinclair Basic
  • dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…

    ... bytes+10: PRINT INVERSE 1;CHR$ PEEK a;: NEXT a: PRINT ... c>=32 THEN PRINT CHR$ c;: LET a=a+1 ...
    Battle Bunny Battle Bunny March 2014 Sinclair Basic
  • New ZX Spectrum/ZX80/ZX81 emulator - ZEsarUXHi I invite you to try my new ZX Spectrum/ZX80/ZX81 emulator: [url]http://sourceforge.net/projects/zesarux/[/url] It's not really new, I began it …

    ... ZX80/81
    Supports UDG, CHR$128, WRX, HRG and some ...
    chernandezba chernandezba April 2014 Emulators
  • New version emulator ZEsarUX 0.6Hi I have uploaded a new version of my ZX Spectrum/ZX80/ZX81 emulator. Changes are: Added ZX Spectrum smp tape loading (raw audio) Added Image stab…

    ... version
    Fixed bug with CHR$128 and characters from 64th ...
    chernandezba chernandezba April 2014 Emulators
  • UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…

    ... /> Trick 1:
    [B]print chr$ 144 [/B] [I]This prints ... 'A'[/I]
    [B]print chr$ 145 [/B] [I] This prints ...
    Dock Dock June 2014 Sinclair Basic
  • Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …

    ... 0x5B00 Repton 2 maps, each chr is packed into 5 bits ...
    geraldholdsworth geraldholdsworth June 2014 Games
  • BASin + INKEY$ + SymbolShiftHow can I get BASin to recognise SymbolShifted keys with INKEY$ while running a program? The Help tells me that Control = SymbolShift, but I've tried…

    ... respectively. I tried using CHR$ instead (IF i$=CHR$ 201 etc.) but ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • 'Ocean Draw' instructionsHere are the instructions for the screen and sprite editor used in-house at Ocean Software, possibly typed up by Joffa Smifff (as the 2 of the sprite…

    ... />
    1 -STORE A SINGLE CHR

    2 -FETCH A ... SINGLE CHR

    3 -SWITCH TO ...
    Mark R. Jones Mark R. Jones September 2014 Sinclair Miscellaneous
  • Fast Condition TestingHello my friends, I have been writing some input and string handling routines in BASIC lately - yeah I could write them super fast in C/ASM via z88d…

    ... $ = l$( f ) THEN LET c$= CHR$ (1)
    NEXT f
    Zetr0 Zetr0 November 2014 Sinclair Basic
  • Soundex routineIn an idle 5 minutes I wrote a short routine to calculate Soundex codes using the algorithm described here: [url]http://en.wikipedia.org/wiki/Sounde…

    In an idle 5 minutes I wrote a short routine to calculate Soundex codes using the algorithm described here:

    [url]http://en.wikipedia.org/wiki/Soundex#American_Soundex[/url]

    It gives the correct result for all of the examples on ...
    Battle Bunny Battle Bunny November 2014 Sinclair Basic
  • Podraz 4 codeHello, it might help to preserve the code required for playing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0003790"]Podraz 4[/URL] somewh…

    ... ?id=0006471"]Indiana Jones a Chr?m zk?zy[/URL], but ...
    Patrik Rak Patrik Rak January 2015 Infoseek database
  • SpecBAS 0.830 Released!Hi guys - A new official release of SpecBAS has been released. The full changelog is below, but for now here's the download: [url]https://sites.goo…

    ... were two characters in size; CHR$(1) followed by the character ... , and no longer require the CHR$ 1 prefix in a string ...
    Dunny Dunny February 2015 Sinclair Basic
  • Raycasting (3D Games!) with SpecBAS<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Here's one I wrote just recently. I wanted to see …

    Here's one I wrote just recently. I wanted to see if SpecBAS can handle a raycasting engine - which doesn't mean doom-style texture mapping (though I may try that later!) but a rather nice algorithm that matches nicely up with the old "3D Maze" games you ...
    Dunny Dunny May 2015 Sinclair Basic
  • Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …

    ... the peek will return the chr$ code of the character in ...
    gazj82 gazj82 August 2015 Sinclair Basic
  • Chompston Mazes in SpecBASAfter the discussion in ASH-II's Pacman thread, I checked out the link there about generating 2D Pacman style mazes. This one was quite good fun, …

    ... RND*LEN e$,d$=d$+CHR$ VAL e$(a),e ... $(a+1 TO),l$=l$+CHR$ FN d:
    ... LET x$=x$+CHR$ x,y$=y$+CHR$ y:
    NEXT ... and y$ variables, using CHR$ to convert from a number ... CODE (the opposite of CHR$) to convert back from ...
    Dunny Dunny October 2015 Sinclair Basic
  • Reading PC text files from BASIC!I was playing around with my DivMMC Enjoy! and managed to work out that it's dead easy to load PC .TXT files into the Speccy - I've got them viewable…

    ... the memory addresses and PRINT CHR$ PEEK 50001; etc. I used ... IF statement to avoid printing CHR$ 0 or 10 (10 inserts ...
    PrimitivePerson PrimitivePerson February 2016 Sinclair Basic
  • Simple bit of machine code not working [SOLVED]ishHi all. It's late and I'm tired and I have no idea why the following piece of code wont display a little smiley face [code]ld hl,udg ld (236…

    ... compiles okay as does printing chr$ 144.

    Can one ...
    Tobo Tobo March 2016 Development
  • 140 characters Basic game contestHey there, I've announced a new micro contest on my blog (in Czech language only). However, it might be interesting also for the non-Czech/Slovak …

    Hey there,

    I've announced a new micro contest on my blog (in Czech language only). However, it might be interesting also for the non-Czech/Slovak speaking people like most of you (I guess ;-) )

    The contest is about making a ...
    Factor6 Factor6 May 2016 Sinclair Basic
  • How to separate a character from a number in a string?Hi I've been writing a kind of logo type program in BASIC that takes a string a$ from INPUT and then draws according to what you give it. Say you w…

    ... some trick with VAL or CHR$ so the Speccy can determine ...
    ivanb303 ivanb303 May 2017 Sinclair Basic
  • Hey grandma!HOW TO SUCK EGGS! I always wondered about that saying 'teach your grandmother to suck eggs'! Blow them, yes, but suck? If you've never blown an e…

    ... UDG's and Sprites, klutzy chr graphics in particular, its faster ...
    mik3d3nch mik3d3nch June 2017 Chit chat
  • A game from an other machine.if someone interesting, this is a game I created in 1989. this is the basic source, maybe somebody can convert to specy. An image: http://www.ep128.…

    ... X
    950 IF INKEY$=CHR$(27) THEN GOTO 1770
    endi endi June 2017 Sinclair Basic
  • Out of compo 2017: ZX Spectrum erotic graphics competitionPlease vote for the graphics from Out Of Compo 2017: http://events.retroscene.org/ook2017/zxgfx?lang=English This year we have 10 ZX Spectrum scree…

    ... screens in standard, gigascreen and CHR$ formats and 10 53colors screens ...
    moroz1999 moroz1999 November 2017 Announcements
  • Tutorial: Using UDGs in SpecBASSpecBAS is capable of using graphics mode, in a similar manner to the original Spectrum. Like most things though, the extended nature of SPecBAS's ab…

    ... . In this case, "a" is CHR$ 97. The UDG for "a ...
    Dunny Dunny May 2018 Sinclair Basic
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