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Search Again :: Adv Search 1000 results in 0.016s
<1…18192021222324…34>
  • Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …

    ... 23671

    500 LET bc=USR 50444: POKE 23680,PEEK 23670 ...
    Battle Bunny Battle Bunny January 2014 Development
  • +3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…

    ... bit 3

    [code]let l = peek(23399)

    randomize usr val "xxxxx"[/code]
    Speccy_James Speccy_James January 2014 Development
  • +3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…

    ... bit 3

    [code]let l = peek(23399)

    randomize usr val "xxxxx"[/code][/QUOTE]
    seedy1812 seedy1812 January 2014 Development
  • hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…

    ... ",
    "IF", "INK", "INPUT", "INVERSE", "LET", "LIST", "LLIST", "LOAD",
    "LPRINT ... ", "SIN", "SQR", "STR$", "TAN", "TO", "USR", "VAL$", "VAL",
    "AT", "LINE ...
    Kweepa Kweepa January 2014 Development
  • +3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…

    [QUOTE=Speccy_James;748325][code]let l = peek(23399)

    ... 23399,l+8
    randomize usr val "xxxxx"[/code][/QUOTE]
    BloodBaz BloodBaz January 2014 Development
  • hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…

    ... ",
    "IF", "INK", "INPUT", "INVERSE", "LET", "LIST", "LLIST", "LOAD",
    "LPRINT ... ", "SIN", "SQR", "STR$", "TAN", "TO", "USR", "VAL$", "VAL",
    "AT", "LINE ...
    Kweepa Kweepa January 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... refer to them. The "RANDOMIZE USR 60212" is to set up ... .
    [code]
    100 RANDOMIZE USR 60212
    180 INPUT "text ... =1 TO LEN c$:
    LET c=CODE c$(a):
    USR 60000))))):
    LET ox=ox+sx+7 ...
    Battle Bunny Battle Bunny February 2014 Development
  • INPUT help?Hi folks. :) Brace yourselves, this is probably a very silly question, my BASIC knowledge is very... well, basic... Let's say, for example, I'm mak…

    ... )
    30 RANDOMIZE
    40 LET number=1+INT (1000*RND ... the number? ";
    60 LET x=USR 65000
    70 IF number ...
    Einar Saukas Einar Saukas February 2014 Sinclair Basic
  • that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…

    ... ]
    9900 RESTORE 9992: RANDOMIZE USR (FN p(23639)+6):
    RESTORE 9991: LET s1=FN p(23639)+6 ... /> INPUT "Type ";o,"Name ";o$: LET o=FN i(o,2 ... p(s1+2)-2: PRINT " ";: LET d=PEEK i:
    IF ...
    Battle Bunny Battle Bunny March 2014 Sinclair Basic
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... are you using 48K or USR 0 mode? 128K mode will ... , if you need any help let me know.
    rune rune March 2014 Hardware
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... taken when both were in usr 0 (not 128k or 48k ... than 1.2 seconds, then let go. The system promptly crashed ... are you using 48K or USR 0 mode? 128K mode will ... mode, 48k mode and entering usr 0 from 128 basic. Same ...
    Amplitude Amplitude March 2014 Hardware
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... taken when both were in usr 0 (not 128k or 48k ... than 1.2 seconds, then let go. The system promptly crashed ...
    rune rune March 2014 Hardware
  • TAPlist - the emulator versionI've got this working reasonably well; there's just a couple of small extra features which I want to add. (Recall that TAPlist writes a formatted lis…

    ... "margin: ";marg,"tabstop: ";tabs:
    LET marg=INT ABS marg:
    LET tabs=INT ABS tabs:
    RANDOMIZE marg=(tabs=USR (FN p(FN v()+6 ...
    Battle Bunny Battle Bunny April 2014 Sinclair Basic
  • 128+2 Help!Today the postie brought me an early Spectrum 128+2, it's a Z70700 Issue 1. Everything seems to be working ok, i.e it boots up and the keyboard work…

    ... ]10 CLEAR 64511
    20 LET a=64512
    30 READ ... POKE a,d
    60 LET a+a+1
    70 ... /> Then use
    [CODE]PRINT USR 64512 [/CODE][I][B]Mark ...
    1024MAK 1024MAK April 2014 Hardware
  • TAPlist - the emulator versionI've got this working reasonably well; there's just a couple of small extra features which I want to add. (Recall that TAPlist writes a formatted lis…

    ... TAPlistMC.BAS [code]
    9999 LET v=PEEK 23627+256*PEEK ... 23628:
    LET c=PEEK (v+6)+256 ... : ";m,"tabstop: ";t:
    LET m=INT ABS m:
    RANDOMIZE m=(t=USR (v+6+c-63600)):
    [*]DIM a$(1900)
    [*]LET v=PEEK 23627+256*PEEK ...
    Battle Bunny Battle Bunny April 2014 Sinclair Basic
  • Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…

    ... PLOT 255,0: LET bc=-255=175+USR DOTS: REM DRAW coords ... /> 30 PLOT 255,175: LET bc=-255=-175+USR DOTS
    40 ... PLOT 127,0: LET bc=0=175+USR DOTS
    50 ... PLOT 0,87: LET bc=255=0+USR DOTS
    70 ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…

    ... PLOT 255,0: LET bc=-255=175+USR DOTS: REM DRAW coords ... /> 30 PLOT 255,175: LET bc=-255=-175+USR DOTS
    40 ... PLOT 127,0: LET bc=0 ... =175+USR DOTS
    50 ... PLOT 0,87: LET bc=255=0+USR DOTS
    70 ...
    Paddy Coleman Paddy Coleman July 2014 Sinclair Basic
  • Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …

    ... a(x,y,h,v)=USR 63000
    2 REM FAST ... /> 22 PAUSE 0
    25 LET i=FN a(5,5 ... STOP
    7000 LET b=63000: LET l=95: LET z=0
    7002 POKE (b+i),a: LET z=z+a
    7003 ... NEXT i
    7004 LET z=INT (((z/l)-INT ...
    Paddy Coleman Paddy Coleman July 2014 Sinclair Basic
  • Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …

    ... (x,y,w,h,a)=USR 63000
    110 INPUT "Row ...
    120 LET y=INT y: LET x=INT x: LET h=INT ... h: LET w=INT ... w: LET a=INT ... a
    130 LET y ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…

    ... (ie. compared to RANDOMIZE, LET or PRINT, for example). As ... STKEND) the expression "x=y+USR Plot191" must always be false ... /> ;Syntax: FLASH x=y+USR Plot191
    ;where x=0 ... :
    [code]
    4 LET h$=b$(175-y+1 ... 6 TO ))*256:
    LET bit=x-8*INT (x ...
    Battle Bunny Battle Bunny August 2014 Sinclair Basic
  • Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…

    ... the previous post with "15 LET bc=USR 23296".
    [code]
    Battle Bunny Battle Bunny September 2014 Sinclair Basic
  • Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…

    Run with "LET bc=USR 50000: PAUSE 2" and repeat ...< ...
    Battle Bunny Battle Bunny September 2014 Development
  • Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…

    ... NEXT i: LET bc=USR InitP
    13 LET gen=gen+1 ... Generation:";gen'p$:
    LET bc=USR GenPG: IF INKEY$=" " ... br />
    InitP: ;LET bc=USR InitP
    call GetGPvars

    GenPG: ;LET bc=USR GenPG
    di
    ld ...
    Battle Bunny Battle Bunny October 2014 Sinclair Basic
  • Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…

    ... )
    11 RANDOMIZE 0: LET bc=USR InitS:
    BORDER 1: PAPER ... =1 TO 20: LET bc=den=((i-1)*32)+USR InitG: NEXT ... i:
    GO SUB 20
    14 LET ... ,0;"Generation: ";gen'p$:
    LET bc=USR GenPG: IF INKEY$=" " THEN ...
    Battle Bunny Battle Bunny October 2014 Sinclair Basic
  • clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…

    ... would be needed after the USR call.
    [code]
    ; clear ... ,col;: RANDOMIZE cols+256*rows: LET bc=USR ClearWindow
    ; row,col ...
    Battle Bunny Battle Bunny October 2014 Development
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... System[/B]
    OK, let's master [URL="http:// ... BASIC loader[/B]
    Let's take a look ... LOAD ""CODE : [B]RANDOMIZE USR 27200[/B]: POKE 23739,111 ... /> 40 CLS : [B]RANDOMIZE USR 32000[/B]: GO TO 40 ... CODE]LOAD "LOMMSP" CODE: RANDOMIZE USR 27200: SAVE *"m";1;"SCR ...
    jp jp October 2014 Announcements
  • Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…

    ... you do something like PRINT USR 32768, the register pair BC ... as the result of the 'USR' function, so will be printed ... could do, if you like, 'LET BC = USR 32768 : PRINT BC'.
    joefish joefish November 2014 Development
  • Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?

    ... *8: PAUSE 8:
    LET bc=USR 23296:
    NEXT r[/code ... ,col;: RANDOMIZE cols+256*rows: LET bc=USR FlashWindow
    ; row,col ...
    Battle Bunny Battle Bunny November 2014 Development
<1…18192021222324…34>

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