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  • 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…

    ... want to take a quick peek, but 25 years ago I ... without any protection, no fake numbers, no colour codes, nothing to ...
    zxbruno zxbruno 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…

    ... want to take a quick peek, but 25 years ago I ... without any protection, no fake numbers, no colour codes, nothing to ... =23755 TO 32768: PRINT A, PEEK A: NEXT A

    Timmy Timmy March 2014 Sinclair Basic
  • Sorting BusinessThis is a little bit different from the usual game-related fare but I know there are a few people here who like this sort of thing. This is about so…

    [QUOTE=Einar Saukas;768335]Use the middle element of the partition as pivot. This should be good enough in all practical cases.

    There are even better, more sophisticated strategies for choosing a pivot, but they have an additional overhead ...
    Alcoholics Anonymous Alcoholics Anonymous May 2014 Development
  • Yay! Another two fingers to us paying customers from the gaming industryThe (to me, hateful) trend of games companies selling their modern AAA titles in various editions, as opposed to earlier times when when you bought a…

    ... modded, and often had huge numbers of free mods available, some ... a publically released tool - where random crashes and strangle error messages ...
    bobs bobs May 2014 Chit chat
  • Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…

    [QUOTE=Dock;774114]Experimenting more has lead me to realise the limitations in my own code, so I'm going to try to keep it as simple as possible. Next step is to get the game responding to certain tiles as collectables or switches.[/QUOTE]

    ...
    Battle Bunny Battle Bunny June 2014 Sinclair Basic
  • Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…

    [QUOTE=Battle Bunny;774142]Here's some extracts from a program which I've been working on recently, which illustrate some methods to consider. An exhaustive commentary follows ...

    [code]
    35 LET j1= 0: LET j2=-1: LET s=1: RETURN
    ...
    davepierce07 davepierce07 June 2014 Sinclair Basic
  • Malware scam?Just had some idiot on the phone telling me my PC was riddled with viruses and only they could resolve the situation, they originally pretended to be…

    ... the number.
    The first random call came in about a ... program that cold dials valid numbers until they get a hit ...
    guesser guesser July 2014 Chit chat
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... a=64000
    8942 IF PEEK a=128 THEN
    STOP ...
    8944 LET b0=PEEK a:
    IF b0> ... : LET b$=STR$ (PEEK (a+1)+256*PEEK (a+2)):
    ... 5,a ;*;lower case letters (numbers unchanged)
    ld c,a ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Frames Per SecondHow many frames per second did the ZX Spectrum run at? I've found games that are 12.5fps but Ive recently been informed some games were at 25fps ...…

    ... given a draw type at random. Some are masked sprites, some ... less jerky for high pacmen numbers.
    Alcoholics Anonymous Alcoholics Anonymous August 2014 Development
  • Deterministic random number generatorI'm looking for a random number generator in assembly which, given a seed, the generated sequence is always the same. You change the seed, you get a …

    ... number, so it generates even numbers all the time (assuming it ... do was generate something vaguely random. Although I did used to ...
    melkig1967 melkig1967 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…

    ... DEF FN p(a)=PEEK a+256*PEEK (a+1): CLEAR 32767 ... +2),hl
    ld hl,(23672) ;HL=(FRAMES)
    ld (SEED32 ...
    Battle Bunny Battle Bunny October 2014 Sinclair Basic
  • New Game: ZEN[IMG]http://i61.tinypic.com/r94r5f.png[/IMG] [IMG]http://i58.tinypic.com/2150kmd.png[/IMG] [IMG]http://i62.tinypic.com/308w4zo.png[/IMG] [IMG]http://…

    ... /> Notice it doesn't mean "random", since levels are deterministic (each ... not an infinite amount. Level numbers have 4 digits only, so ...
    Einar Saukas Einar Saukas October 2014 Brand new software
  • RANDOMIZE - still not sure what it does...Whenever I wish a random number I use RND like: 10 LET a=RND*100 20 PRINT a 30 GO TO 0 and "a" will truly be random. But if is do the following: …

    ... time the same sequence of numbers.

    If ... you'll get the same numbers.

    If ... , you'll get the same numbers.

    But ... 'll get different series of numbers.

    The ...
    [CODE]10 POKE 23672,0: POKE 23672,0: POKE 23673,0 ...
    Zup Zup January 2015 Sinclair Basic
  • Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…

    ... instance), then simply copy addresses 23672/23673 (lower 2 bytes of ... :

    [CODE]ld hl,(23672) ; read from FRAMES
    ld ...
    ld (SEED),hl ; set random seed
    [/CODE]
    Einar Saukas Einar Saukas February 2015 Development
  • Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…

    [QUOTE=Jerri;817782][QUOTE=Einar Saukas;817774]I just run a simple empirical test (plotting randomly on screen) to compare the random generator algorithms mentioned here:

    [CODE]10 FOR f=0 TO 20000
    20 LET y=USR 32768: IF y
    Einar Saukas Einar Saukas February 2015 Development
  • Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc.&nbsp; There is an interesting…

    ... my uses of floating point numbers over the years!

    random people on the internet because ...
    zub zub July 2015 Development
  • Awful Q.I. newsTerrible news for fans of the TV programme Q.I., it's going to be hosted in future by Sandi Toksvig. Stephen Fry is leaving after thirteen years, and…

    ... />
    Citation needed with actual numbers. Not just some anecdote.
    random. Not one of them is ... of 21 presenters picked at random.

    It might be ...
    Winston Winston October 2015 Chit chat
  • Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…

    ... /> You may get a random reset or device not known ... (12345)
    Printing the correct numbers on screen = working
    ... (67890)
    Printing the correct numbers on screen = working
    ... 31
    Printing the correct numbers on screen = working
    ...
    MatGubbins MatGubbins November 2015 Brand new software
  • ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…

    ... and read the contents using PEEK, you can't store the ... bytes rather than floating point numbers, a floating point number in ... of the number; so using numbers to define a font will ...
    GReW GReW December 2015 Sinclair Miscellaneous
  • Calling machine codeOccasionally I see on ZX computers (mostly the spectrum, but I think also the '80 and '81), how someone made their machine code and wrote the bytes i…

    ... see three randomly generated numbers. After each time the ... relationship among these numbers, they aren't random in strict sense ... calling will generate another random number and another SEED, ... statement makes RND generator "more random".

    All ...
    TK90XFan TK90XFan March 2016 Sinclair Miscellaneous
  • 1986-2016.I'm early, but I'm tired of 1985. So here's the annual thirty-years after topic about Speccy games.

    ... wins, then it's a numbers game where after choosing a ... and small numbers they must use them to calculate a random total ...
    Nick Nick July 2016 Games
  • Empire - port of trs80 basic programBack when I was a little kid, I had the opportunity to play around with a trs80 model 1 with level 2 basic. One of the games I often played was call…

    ... function isn't handling negative numbers correctly, if the sign falls ... : GO SUB s5: POKE row,PEEK row-k7
    [/code]
    Battle Bunny Battle Bunny August 2016 Brand new software
  • Basic BASIC help needed RNDHi all, I have recently re-discovered an old program I wrote in the early 90s which would do generate random lottery numbers. I know little now, an…

    Funny story about this. I was once in the US and asked for a random lottery ticket from the vendor. The numbers drawn were 1-49.

    You guessed it. I had number 50 on my ticket.

    I didn't win.
    Gedlion Gedlion September 2016 Sinclair Basic
  • UDG generator doesn't work, why?Typing in the UDG generator from the manual I get integer out of range when I run it. I'm going nuts trying to figure out whats wrong. Can someone pl…

    ... I wanted to retrieve the numbers entered wouldn't I just ... 7
    20 LET b=PEEK USR "p"+n
    30 ... seem to return the same numbers I entered where are the ...
    ivanb303 ivanb303 October 2016 Sinclair Basic
  • UDG generator doesn't work, why?Typing in the UDG generator from the manual I get integer out of range when I run it. I'm going nuts trying to figure out whats wrong. Can someone pl…

    ... I wanted to retrieve the numbers entered wouldn't I just ... 7
    20 LET b=PEEK USR "p"+n
    30 ... seem to return the same numbers I entered where are the ... /> [code]
    20 LET b=PEEK (USR "p"+n)
    [/code ...
    crunchy_frog crunchy_frog October 2016 Sinclair Basic
  • Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…

    ... one data byte). Similarly with numbers, although DIM a(1) takes ... br /> 1011 POKE 23627,PEEK 23670: POKE 23628,PEEK 23671:
    REM ... br /> 1030 POKE 23627,PEEK 23670: POKE 23628,PEEK 23671:
    REM ... DEF FN p(a)=PEEK a+256*PEEK (a+1)
    2004 ...
    Battle Bunny Battle Bunny October 2016 Sinclair Basic
  • So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…

    It depends of what numbers and how frequently you need.

    For example:

    [code]
    ld a, r
    and 0x0F
    [/code]

    and you get "random" number from 0 to 15 in register A.
    Bedazzle Bedazzle November 2016 Assembler
  • So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…

    ... know computers only produce pseudorandom numbers. To get real ones you ... 't need this level of random . I throught maybe Speccy must ... function to give you randomish numbers :) Happy to give those listings ...
    ivanb303 ivanb303 November 2016 Assembler
  • So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…

    ... ;885248"]It depends of what numbers and how frequently you need ... be used wise, or your numbers never will be random. ;)
    Bedazzle Bedazzle November 2016 Assembler
  • So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…

    ... ;885248"]It depends of what numbers and how frequently you need ... ]

    and you get "random" number from 0 to 15 ...
    Zup Zup November 2016 Assembler
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