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  • Randomised data samplingHere is something that could be written in BASIC, if anyone is interested. Lets say we want to sample a subset of a larger population, we can do t…

    ... 50000

    10 PRINT "Please wait a minute"
    20 PRINT "Filling Population Table"
    ... br />
    100 CLS: PRINT "FULL POPULATION DISTRIBUTION"
    105 ...
    To come next a routine to random sample this population ...
    dmsmith dmsmith April 2020 Sinclair Basic
  • how do i set this code up, so i can print more than one line of text?well i got it working but how do i set this code up, so i can print more than one line of text? with a loop or something? not sure where to start on …

    ... code up, so i can print more than one line of ... like to know how to print longer messages, as long as ...
    digital digital June 2020 Assembler
  • why am i getting b integer out of range in this code?ive tried running this in spin but thats what i get [code]main org 40000; ; We want a black screen. ld a,71 ; white ink (7) on black paper (0…

    ... game.
    call 3503 ; ROM routine - clears screen, opens chan 2 ... 's gunbase position,
    ; this routine is called prior to display ...
    ; Show player at current print position.
    splayr ld a ...
    digital digital June 2020 Assembler
  • this code wont give me a random starfieldim using a peice of code that ive copied from a book, ignore most of it as it is redundant. for some reason i get a strange random starfield instead …

    ... game.
    call 3503 ; ROM routine - clears screen, opens chan 2 ... 's gunbase position,
    ; this routine is called prior to display ...
    ; Show player at current print position.
    splayr ld a ...
    digital digital July 2020 Assembler
  • Speed comparison of BASIC CommandsHi everyone, I reactivated my account (thanks Lee!) due to starting to code some BASIC with my daughter. In the tips and tricks thread there is a …

    ... or faster ways to perform routine tasks in BASIC.

    PRINT commands compare speed-wise?
    48K 48K July 2020 Sinclair Basic
  • New Utility ZXSTLC[b]New Utility ZX Spectrum Tape (& Disk) Loader Creator[/b] I made this utility to easily create tape and +3 disk loaders for my projects and have…

    ...
    | both -s & -c print size of the headerless block ...
    TomD TomD August 2020 Brand new software
  • How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…

    ... to set up a scrolling routine. You can find many ... Line 300, where we print a character to the right ... game.
    Then we print the score right after scrolling ... t=USR 60000
    200 PRINT AT 21,0;"score : ... ";s;
    300 PRINT AT RND*20,30;"*"
    Timmy Timmy September 2020 Development
  • CODE instruction in array$ PRINTSo I'm still plugging away at BASIC and have found a line of code (another!) that's really puzzling me. The line is as follows: PRINT A$(P+Q TO P…

    ... line is as follows:
    PRINT A$(P+Q TO P ... code line, it reads:
    Print the characters from index 481 ... is 8).
    i.e. PRINT A$(481 TO 488). The ...
    LevelUp LevelUp October 2020 BASIC
  • Earliest game to use custom character set ?The [url="https://worldofspectrum.org/forums/discussion/58040/who-has-got-the-earliest-zx-spectrum-software/"][b]topic here[/b][/url] about early sof…

    ... first game to use a custom character aka "font" set 0 ...
    spider spider November 2020 Games
  • SP1: Print text outside the game sp1_RectHi, Is it possible to print outside the usual sp1_Rect defined for SP1? My idea is to have a small sp1_Rect for the game and print text outside fo…

    ... />
    Is it possible to print outside the usual sp1_Rect defined ... sp1_Rect for the game and print text outside for lifes, scores ...
    amateus amateus December 2020 Development
  • Textured Scanline Flood Fill for ZX Spectrum 48KPity that it's quite hard to contribute code to WoS in a straightforward manner. Recently, I have created a textured/hatched fill M/C routine for the…

    ... textured/hatched fill M/C routine for the ZX Spectrum 48K ... /> 520 STOP

    9000 PRINT "{AT 10,11}WAIT..."
    9020 READ a$: PRINT "{AT 20,0}";a$
    Volker Volker February 2021 Software
  • pixel exact printingis there a way of doing this in basic? or by copying / modifying the rom code or using a completely new routine? so that print at x,x works more like…

    ... using a completely new routine? so that print at x,x works ... .co.uk/entry/8 ... Plot-Print

    unfortunately it doesnt ... to clear a square like print " " does, for sprite movement
    digital digital December 2021 Development
  • BASIC Bug: DEF FN after REMHello all, Having mused the Spectrum ROM disassembly by Drs Logan ad O'Hara, I wondered about how good ZX BASIC was at locating the DEF FN when call…

    ... FN a()=10
    20 PRINT FN a()
    [/code]
    20 PRINT FN a()
    [/code]
    routine that looks for DEF FN ...
    BloodBaz BloodBaz May 2022 BASIC
  • NMI Routine and Restarts in a new 128K ROMI'm presently engaged in creating AGD 5 with the intention of making it a pair of 16K ROMs for the 128K/+2. I'm fairly sure that the vast majority o…

    ... ROM 0 as the delay routine in RST 0 overran. Beyond ...
    jonathan jonathan July 2022 Hardware
  • Sort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…

    ... /> But if you want a routine which takes an array of ... />
    // A utility function to print array of size n
    Paradigm Shifter Paradigm Shifter July 2022 Development
  • How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…

    ... /> LET C = A + B
    PRINT C

    in assembly ... /> Note, we don't actually 'print' the results in the AL ... could use a ROM routine to print but that's another topic ...
    Arjun Arjun January 2002 Games
  • How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…

    ... /> LET C = A + B
    PRINT C

    in assembly ... /> Note, we don't actually 'print' the results in the AL ... could use a ROM routine to print but that's another topic ...
    Arjun Arjun January 2002 Games
  • Screen$ +3 disk to tape helpHi, I have several full screen pictures of my +3 disks (Screen$). How can I transfer these pictures onto tape without losing the last to lines beca…

    ... adaptation of the following routine

    10 PRINT #0; "Save Me ... a short
    machine code routine to save the complete screen ...
    Geoff Geoff February 2001 Sinclair Miscellaneous
  • Hook CodesIf you've dug into the Interface 1 this should be an easy question. I last had 'em circa 1990 while I can remember the things they did Start Motor C…

    ... A.
    1C PRINT 19EC 1EE0 1EE2 print CHR$ A on system ... 1EFF read in the next PRINT buffer.
    26 WRITE_S ... 1F0B 1F0D read in a PRINT buffer.
    28 READ_R ... 1E96 call the shadow ROM routine addressed.
    33 SCAN_M ---- 1FE4 ...
    Geoff Geoff February 2001 Sinclair Miscellaneous
  • WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…

    ... ,BIN 11101111
    20 PRINT IN 254
    30 ... ,BIN 11111111
    40 PRINT IN 254
    50 ... techinfo.doc) is that PRINT IN 254 gives bit 6 ... machine occurs because, as PRINT IN 254 is typed ... and the ROM beep routine contains a OR 8 before ...
    Dr BEEP Dr BEEP November 2001 Sales
  • Anyone Recognizes This Loader?Hi there! I live in Argentina. I have a -dead by now- CZ Spectrum (a ZX clone made by an argentinian company, Czerweny, which used to make... Excell…

    ... was saved to tape, a custom bit of software was loaded ... or tape.

    The custom sofware would load the memory ... code routines to the decompressor routine (if you knew where to ...
    MatGubbins MatGubbins March 2002 Sinclair Miscellaneous
  • Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …

    ... screendump you must rewrite te routine.
    Calling it by using ... 1 ; esc.code table
    PRINT...LD B,(HL) ; B held ... D = 13
    ........JR NC,PRINT ; 0 gives carry =END
    PRINT = LANDSCAPE)
    TABLE...DEFB 13 ...
    Dr BEEP Dr BEEP July 2002 Sinclair Miscellaneous
  • Machine CodeOk i had a spectrum when i was younger and only used it for playin games and typing simple BASIC programs - i mean really simple! Things like 10 Pri…

    ... FOR F=23755 TO 4E4: PRINT F;"...";PEEK F,CHR$ PEEK ...
    CALL PRINTSTACK ; ROM Routine to print last value(=BC)
    LD ...
    Dr BEEP Dr BEEP July 2002 Sinclair Miscellaneous
  • Spectrum ROMI downloaded some text files (they are actually the spectrum ROM files but in text) which can be compiled using TASM (or soemthing). I read on WOS th…

    ... give hime a simple printing routine in MC.

    If ... graphics with UDG's and print them in BASIC and when ... you could use this simple routine.
    To move your graphic ...
    Dr BEEP Dr BEEP August 2002 Sinclair Miscellaneous
<1…18192021222324…34>

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  • Print routine for BASIC (or BASin)For anyone interested there's a crappy binary here to print characters from BASIC at pixel positions. Import the binary at 60000, USR 60000 to initia…
  • Custom SAVE Routine work on emulators?Hi,<br /> <br /> I'm developing a SAVE routine derived from the one present in ROM 48K, and I'm trying to get it work on several emulators (X128, Spe…
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