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<123>
  • MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…

    ... b,7
    loop ld (23681),hl ;poke address with hl ...
    daveysludge daveysludge September 2013 Development
  • A neat little BASIC trick(from a type-in by Robert Burgess) This one line of code completely bamboozled me for a while, as it seemed impossible for it to produce the result s…

    ... the system variable byte at 23681 is "not used" - but, looking ... been the intended use of 23681, it eventually dawned on me ...
    Battle Bunny Battle Bunny April 2010 Sinclair Basic
  • Jelly-Vision!As threatened in the "'Spectrum Play' Error" thread, here's a ruff'n'reddy interrupt driven full screen wobbling routine which has no practical use w…

    ... .
    [code]
    ; start: POKE 23681,254: RANDOMIZE USR 33001

    ld a,(23681)
    cpl
    ld (23681),a
    xor ...
    Battle Bunny Battle Bunny June 2012 Sinclair Basic
  • A silly BASIC programming challenge for you all..This is a very, very sily idea. So only read if you are bored. I use E-bay a lot. (my user id is thx1138ebn) edit: it's now retro-technology :edit…

    For the rubber-chum, this screenful
    10 FOR i = 64 TO 87 : POKE 23681,i : LPRINT "Top Ebayer+++++" : NEXT i : PAUSE 0
    :)
    Geoff Geoff July 2002 Sinclair Miscellaneous
  • Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…

    ... F = 64 TO 71 : POKE 23681,F : LPRINT "NICE EFFECT" : NEXT ... F = 72 TO 79 : POKE 23681,F : LPRINT " OF THE " : NEXT ... F = 80 TO 87 : POKE 23681,F : LPRINT "PRINTERBUFFER" : NEXT F ...
    Dr BEEP Dr BEEP November 2002 Sinclair Miscellaneous
  • List of "funny" pokes?Hello! I'm looking for a list of "funny" pokes. Pokes that do strange things with my Speccy, like POKE 23607,0 scrambles up the keyboard. Regards …

    10 POKE 23681,64 : LLIST

    Then stand up and look down at your monitor.
    Geoff Geoff February 2003 Sinclair Miscellaneous
  • List of "funny" pokes?Hello! I'm looking for a list of "funny" pokes. Pokes that do strange things with my Speccy, like POKE 23607,0 scrambles up the keyboard. Regards …

    10 for f=64 to 64+7: poke 23681,f: LPRINT "HELLO" : next f
    20 rem also possible with f=72 and f=80

    10 poke 23692,255 : PRINT AT 21,0;'' : REM SCROLL equivalent

    BTW: thanks for trying POKE 23607,0
    Dr BEEP Dr BEEP February 2003 Sinclair Miscellaneous
  • List of "funny" pokes?Hello! I'm looking for a list of "funny" pokes. Pokes that do strange things with my Speccy, like POKE 23607,0 scrambles up the keyboard. Regards …

    [quote]
    On 2003-02-27 21:26, Geoff wrote:
    10 POKE 23681,64 : LLIST

    Then stand up and look down at your monitor.
    [/quote]

    I don't get that one
    Psycho Wolf Psycho Wolf March 2003 Sinclair Miscellaneous
  • List of "funny" pokes?Hello! I'm looking for a list of "funny" pokes. Pokes that do strange things with my Speccy, like POKE 23607,0 scrambles up the keyboard. Regards …

    ... , Geoff wrote:
    10 POKE 23681,64 : LLIST

    Then ...
    Woody Woody March 2003 Sinclair Miscellaneous
  • List of "funny" pokes?Hello! I'm looking for a list of "funny" pokes. Pokes that do strange things with my Speccy, like POKE 23607,0 scrambles up the keyboard. Regards …

    ... , Geoff wrote:
    10 POKE 23681,64 : LLIST

    Then ...
    Amigo Amigo March 2003 Sinclair Miscellaneous
  • Who is Bill Gilbert? what has he done?I remember numerous games in Russia where the loading screen said BY BILL GILBERT, but can't find games with this name now. I found some articles abo…

    LCD, I have it here:

    [code]
    FOR F = 64 TO 71 : POKE 23681,F : LPRINT "HELLO" : NEXT F
    [/code]

    Make F = 72 or 80 for 2nd and 3rd part of the screen.
    Dr BEEP Dr BEEP June 2003 Sinclair Miscellaneous
  • POKE, PEEK and RANDOMIZE USRAnyone got a store of useful POKES, or RANDOMIZE USR statements with interesting effects? As a start, try anything from RANDOMIZE USR 1216 to RANDOM…

    ... /> Also, I consider 10 POKE 23681,64: LLIST to be a ...
    The Mighty Dopethrone The Mighty Dopethrone October 2003 Sinclair Miscellaneous
  • Basic corruptionDoes anyone have any tips or solutions for when a Basic listing becomes over a certain size and starts to get corrupted due to paging... I remember …

    ... the manual that says that 23681 is unused means that many ...
    Geoff Geoff August 2004 Development
  • Basic corruptionDoes anyone have any tips or solutions for when a Basic listing becomes over a certain size and starts to get corrupted due to paging... I remember …

    ... .
    Press BREAK then POKE 23681,95 : LLIST
    You will ...
    Geoff Geoff August 2004 Development
  • Basic corruptionDoes anyone have any tips or solutions for when a Basic listing becomes over a certain size and starts to get corrupted due to paging... I remember …

    ... .
    Press BREAK then POKE 23681,95 : LLIST
    You will ...
    GOC GOC August 2004 Development
  • New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…

    This is what I've compiled so far:

    [quote]Resources
    =========

    * Make all caps
    ---------------

    You can turn CAPS LOCK on or off using a simple poke to 23658:

    POKE 23658,8: REM CAPS ON
    ...
    na_th_an na_th_an April 2005 Development
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... N=72 TO 79: POKE 23681,N : LPRINT A$(1 TO ...
    Dr BEEP Dr BEEP April 2005 Sinclair Basic
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... N=72 TO 79: POKE 23681,N : LPRINT A$(1 TO ...
    BloodBaz BloodBaz October 2006 Sinclair Basic
  • Will an interface 1 work with a +2?I don't want to break anything, can I bugger up the +2 by connecting an interface 1 and microdrive to it? Are they compatible? If they are, with no…

    ... so called "unused" system variable 23681 which holds the high byte ...
    Geoff Geoff March 2007 Hardware
  • Interface 1/Printer problemAre there any known incompatibilities between the Interface 1 and the standard ZX Printer? I've now had three working printers die on me. They were…

    ... the other 'unused' System Variable 23681 can cause blank output but ...
    Geoff Geoff October 2009 Hardware
  • A neat little BASIC trick(from a type-in by Robert Burgess) This one line of code completely bamboozled me for a while, as it seemed impossible for it to produce the result s…

    ... the system variable byte at 23681 is "not used" - but, looking ... been the intended use of 23681, it eventually dawned on me ...
    Dr BEEP Dr BEEP May 2010 Sinclair Basic
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    Ah, looks like 128K machines default to Kempston joystick controls. If you're in 128K mode POKE 23681,1 should reset the controls to keyboard for now.
    jonathan jonathan November 2011 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... stated in the documentation, POKE 23681,0 for Kempston or any ...
    jonathan jonathan November 2011 Development
  • SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…

    ... ERR_NR error code
    LD (23681),A ;in "not used"
    Battle Bunny Battle Bunny June 2012 Development
  • Jelly-Vision!As threatened in the "'Spectrum Play' Error" thread, here's a ruff'n'reddy interrupt driven full screen wobbling routine which has no practical use w…

    ... mem and running [QUOTE]POKE 23681,254: RANDOMIZE USR 33001[/QUOTE ...
    NRA NRA June 2012 Sinclair Basic
  • Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…

    ... "Report code ";FN m(PEEK 23681);" at line ";FN p(23615 ... ERR_NR error code
    LD (23681),A ;in "not used"
    Battle Bunny Battle Bunny July 2012 Sinclair Basic
  • Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…

    ... ERR_NR error code
    LD (23681),A ;in "not used"
    Einar Saukas Einar Saukas July 2012 Sinclair Basic
  • smooth movement in basicWas trying to figure this out myself but i would like to be pointed in right direction now :-). How do I make something move in Basic without gettin…

    ... PAPER 6: INK 2: POKE 23681,0[/color]
    10 PAUSE ... /> 9030 IF NOT PEEK 23681 THEN POKE 23681,1: LET s=0 ...
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
<123>

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