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<1234567…34>
  • RANDOMIZE USR, PRINT USR etcHello just wondering why is it called RANDOMIZE UsR what does randomising have to do with it ? When calling machine code routine from adress x you ty…

    ... why is it called RANDOMIZE UsR what does randomising have to ... RANDOMIZE USR x. Why not RUN USR x ? I just tried PRINT USR 65368 ... it resets the machine! Why doesn't it print ...
    ivanb303 ivanb303 October 2016 Sinclair Basic
  • Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…

    ... />
    I know that USR 0 simply causes the CPU ... ), the same as PRINT USR 0, LET a=USR 0, etc, of ... advantages for the program does USR 0 mode offer over ... program that might require a USR 0 style setup) could, ... place, and do whatever else USR 0 mode does, then ...
    ewgf ewgf December 2008 Sinclair Miscellaneous
  • ZX PC Interface : The manual, schematics and more info... ZX &lt;-> PC Interface ------------------- Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Install…

    ... the software.

    PRINT USR 14500;D
    This will ... in the current directory.
    PRINT USR 14500;D;"*.*"
    This ... active file.

    PRINT USR 14500;E;"NAME.TAP"

    PRINT USR 14500;X
    This command ...
    Dr BEEP Dr BEEP December 2002 Sinclair Miscellaneous
  • ZX PC InterfaceZX &lt;-> PC Interface Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Installation 2.1) The softwa…

    ...


    PRINT USR 14500;D
    This will ... following a PRINT
    USR 14500;D command.
    PRINT USR 14500; ... the subdirectory ?newdir?.
    PRINT USR 14500;C;"RD newdir"

    PRINT USR 14500;X
    This command ...
    Dr BEEP Dr BEEP January 2003 Announcements
  • CHROME: a new ZX model! :)Probably You know already about 'last days news', but well... ;) Such informations are so important that I'll put it here: here is a news about n…

    ... .org/bios.tap[/url] -> print usr 32768
    The site is ...
    Yerz Yerz April 2004 Sinclair Miscellaneous
  • An intriguing question...Well, intriguing for me anyway. As we all know, when calling a Machine Code function from BASIC, we use the USR (address) function. But for this to …

    ... from BASIC, we use the USR (address) function. But for this ... keyword:

    RANDOMIZE USR xx
    PRINT USR xx
    LET a ... =USR xx

    I have ... function?

    Why use PRINT instead of RANDOMIZE, (or vice ...
    monty.mole monty.mole June 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 …

    ... at 32768 and then type PRINT USR 32768 to run.



    ; PCHAR

    ; PRINT A 1*8 CHAR TO ...
    robpearmain robpearmain September 2004 Development
  • how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…

    can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this:
    PRINT USR xxxxx, arg1, arg2: ...
    or so...
    Fikee Fikee April 2006 Development
  • Little BASIC gameTry to make all standard BASIC-errors and tell us how you did it. Not allowed i.e. : PRINT USR 1362 D - Break cont-repeats but ok 10 GO TO 10 RU…

    Try to make all standard BASIC-errors and tell us how you did it.
    Not allowed i.e. :

    PRINT USR 1362
    D - Break cont-repeats

    but ok
    10 GO TO 10
    RUN and press BREAK
    D - Break cont-repeats
    Dr BEEP Dr BEEP January 2007 Sinclair Basic
  • PLanning ZX-PC Interface releasesHello everyone. I am working on some additional functions to the ZX-PC Interface. Might take a while before all functions are operational, but here …

    ... "
    Also SCROLL added to PRINT USR 14700,d and interface testsoftware ...
    Dr BEEP Dr BEEP January 2007 Development
  • FATware on +divIDE and ZX SpinHello, My (real) +divIDE running FATware 0.12 was reading snapshots from a FAT (16) formatted CF card perfectly last week. Now, on reset, it recogn…

    ... ,73. Three POKES onto screen + PRINT USR), it now locks up rather ...
    BloodBaz BloodBaz December 2007 Hardware
  • If you've got a real working MF128,IF1, and MDR combo can I ask a favour?So, if you do have a real Multiface 128, Interface 1, Microdrive and, oh yeah, a Spectrum (48k or 128k) that are all working, can I ask a favour...? …

    ... BASIC invoke with:
    ;
    ; PRINT USR 32768
    ;
    ; a result ...
    jp jp February 2008 Hardware
  • Microdrive Help...Hi All, I need a little help.. I would like to transfer one of my all time favorites to microdrive "Atic Atac" (for which I have an original tap co…

    ... .

    But when I print usr to run the game I ...
    jayteebee jayteebee April 2008 Hardware
  • Running Zeus RoutinesHi, i need to load zeus routines in zeus assembler from Spectaculator or Spin.. I followed the manual (switched off auto tape loading, run zeus and t…

    ... when i want to use "PRINT USR 57344" command, nothing happens and ...
    JuPo JuPo May 2008 Emulators
  • So you want to make a cardgame......but you haven't got a good deck to display. Well here is a fully relocatable routine that will do the job for you. Place the code anywhere in me…

    ... A$="QH": PRINT USR adres;A$
    PRINT AT 10,10;USR start;"as ... string after the USR holds the card to print.
    You define ...
    CALL 1008 ; CALL (IX) = PRINT AT
    JR NC,again ...
    Dr BEEP Dr BEEP December 2008 Development
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... is being called with a PRINT USR expression. But the contents of ...
    rahtgaz rahtgaz January 2009 Development
  • Divide Plus, +3e ROMS and Residos - computer locks upHello all I have Divide + and Spectrum +3 with +3e ROMS (v 1.37) I have read RWAP software's Divide Plus user manual and on page 9 of the manual it…

    ... 18456,65 : POKE 18457,199 : PRINT USR 18455

    Result I ...
    Hercules Hercules August 2009 Hardware
  • Print usr 1300??????

    ??????
    Cignale Cignale August 2009 Sinclair Miscellaneous
  • Getting DivIDE Plus to always start with ResiDOSI am hoping someone on here will have experience of using ResiDOS - I emailed Garry Lancaster, but have not received a response as yet. A customer h…

    ... 18457,199

    30 PRINT USR 18455

    40 REM ... 32765,0

    60 PRINT USR 0

    - Presumably line ...
    rwap rwap February 2010 Sinclair Basic
  • Whi different result with Spectrum +3 ?The followed code 10 FOR n=23296 TO 23299 20 READ a: POKE n,a 30 NEXT n 40 DATA 1,127,106,201 50 PRINT USR 23296 causes that the spectrum 48k show…

    ... ,127,106,201
    50 PRINT USR 23296

    causes that ...
    arfgh arfgh May 2010 Sinclair Basic
  • C/M Why different result with Spectrum +3 ?The followed code 10 FOR n=23296 TO 23299 20 READ a: POKE n,a 30 NEXT n 40 DATA 1,127,106,201 50 PRINT USR 23296 causes that the spectrum 48k show…

    ... ,127,106,201
    50 PRINT USR 23296

    causes that ...
    arfgh arfgh May 2010 Sinclair Basic
  • A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…

    ... br /> [code]10 LOAD "": RAND USR 32768[/code]
    The loader ... better loader:
    [code]2328 PRINT USR a[/code]

    ... 0
    4 245 PRINT
    5 192 USR
    6 97 ... in the BASIC program -- [b]PRINT[/b], or whatever). The first ...
    ajmoss ajmoss June 2010 Development
  • How to specify 1st byte to be ran in a tap fileI am writing m/c to a tap file. When I load it in an emulator I have to go through the usual PRINT USR 30000 I always thought TAPs couldnt specify …

    ... through the usual

    PRINT USR 30000

    I always ...
    carlinski carlinski October 2010 Development
  • (part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …

    Here is a routine to copy a Y,X-position on screen to a UDG.
    0
    Dr BEEP Dr BEEP June 2011 Development
  • tap not workingI am trying to create my first spectrum game and am having problems running it. After i load the .tap file and do a PRINT USR 33000, all i get is a 9…

    ... .tap file and do a PRINT USR 33000, all i get is ...
    ooze48k ooze48k September 2011 Development
  • Find-Fill-Copy functions for BASICThere's not much going on here, so here's three m/code routines to provide some data manipulation functions which are otherwise slow to do from BASIC…

    ... each routine, using either:
    "PRINT USR r0,p1[,p2...,pn],r1 ... FN f(p1[,p2...,pn])=USR r1"
    with separate BAS ...
    Battle Bunny Battle Bunny October 2011 Sinclair Basic
  • Is it possible to access the +3 disk drive via m/c in USR0 mode?Is it possible to access the disk drive of the +3 via m/c +3DOS calls when running in USR0 mode? I ask because I'm having an awful lot of trouble ge…

    ... doing a CLEAR 49050 before PRINT USR 48796)
    ei ; interrupts should ... before calling it with a print usr 48796.

    Any help ...
    cmonkey cmonkey October 2011 Development
  • The short blocks loaded in Jet Pac(Hope this have not been previously discussed. If so, my apologies) Is there any reason why Jet Pac loads three short blocks after the main block? I…

    ... one single LOAD ""CODE 24572 : PRINT USR 25067, the game starts (well ... ""CODE 245772: POKE 23728,233: PRINT USR 25067

    Alternatively, if ... ""CODE 245772: POKE 25457,233: PRINT USR 25067
    mcleod_ideafix mcleod_ideafix November 2011 Games
  • Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …

    ... embedded in another PRINT statement thus:
    PRINT "text";USR stack,string_expression, ... from BASIC by:
    ;PRINT USR stack,arg1[,arg2...,argn],address ... (hl) ;JP address

    ;PRINT USR stack,string_expression,max_length,substr;
    Battle Bunny Battle Bunny December 2011 Sinclair Basic
  • Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…

    ... READ v$,v
    10 PRINT USR id,"val"+CHR$ (a+64 ... ),"=",v;
    11 PRINT USR id,v$,"=",v+VAL ("val ... />
    The syntax is:
    ;PRINT USR indirect,arg1,op,arg2;

    ;Indirect Variable Assignment
    ;PRINT USR indirect,arg1,op,arg2;
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
<1234567…34>

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