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<1…13141516171819…34>
  • damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…

    ... Z80 does is turn the border white, which doesn't seem ... RAM IC's + Z80 now, test in other Spectrum and/or ...
    RetroTechie RetroTechie June 2010 Hardware
  • testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…

    ... the ULA (for example a test ROM can be used to ... read, and that you see border changes etc.)

    If ... CRC for the ROM to test it, you'll get the ... of LEDs) to run a test program and show some kind ...
    Winston Winston June 2010 Sinclair Miscellaneous
  • Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …

    ... simply don't care about timings, because it is not important ... /> It's more than just timings, as many files don't ... of songs they use to test with. Likewise if there are ...
    ccowley ccowley July 2010 Announcements
  • Spectrum hangs upWhat might be problem when my ZX Spectrum 48K (rubber keys) hangs up after few minutes play? It had memory problems but i changed (or an expert did i…

    ... br />
    To test lower memory only, run this ... load address.
    To test for possible failures in ... 16K page)
    To test upper memory only, use ... load address.
    To test both lower memory and ... simple: it simply changes the border color, at the (almost ...
    mcleod_ideafix mcleod_ideafix August 2010 Hardware
  • SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…

    ... around with the listings to test the new commands, I wondered ... , it would be nice to test existing type-ins and Im ... we are just dying to test on this...
    [/QUOTE]
    BORDER command, for example? Abort the ...
    Dunny Dunny August 2010 Sinclair Miscellaneous
  • 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. …

    ... ]100 CLEAR 63998
    105 BORDER 0: PAPER 0: INK 7 ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…

    ... />
    $Text = StringReplace($Text, "BORDER ", "LET BORDER=") ;;disable Border command
    $Text = StringReplace ... application to redirect to (eg: test it with notepad or anything ... like:

    Import_BAS.exe test/test2.bas 7 C:\WINDOWS ...
    kgmcneil kgmcneil September 2010 Sinclair Miscellaneous
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 0: INK 7: PAUSE 1: BORDER 0: CLS
    110 PRINT ... data..."
    120 REM Create Test Data
    130 RANDOMIZE : DIM ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 0: INK 7: PAUSE 1: BORDER 0: CLS
    110 PRINT ... data..."
    120 REM Create Test Data
    130 RANDOMIZE : DIM ...
    Dr BEEP Dr BEEP September 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 0: INK 7: PAUSE 1: BORDER 0: CLS
    110 PRINT ... data..."
    120 REM Create Test Data
    130 RANDOMIZE : DIM ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    Hi Dr. Beep,

    Tried one of the tricks you said (move the code nearer the top) and a couple of other optimisations and the Shell Sort now averages 10.3 seconds rather than 11.57.

    [CODE]100 GO SUB 250
    110 REM SHELL SORT V2
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    Hi Battle Bunny,

    Never ceases to amaze me the difference in performance between BASIC and MCODE. Sounds like you have a powerful routine there.

    I have modified my demo version so that it can be used (for future generations ;)) as ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • Help needed +2 pleaseI have a 128k+ that when powered up through the rgb or aerial connection just shows a black screen. But I can still see the list of options and run d…

    ... to open the machine and test +12V on the appropriate pin ... 48k loaded gunfight but the border hasnt got coloured lines when ...
    Modge Modge October 2010 Hardware
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    Hi Dr Beep etc.

    Come on guys - you know more about Sinclair BASIC than is healthy! :smile: Surely you have some tips to optimise/speed up the following code.

    [CODE]100 GO SUB 250
    110 REM SHELL SORT V4
    120 LET b=INT (n ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…

    ... ? If I'm right, the border color indicates you what memory ... be more useful that the border color would indicate which bit ... the border color always the same?

    There's a test ... , this time with a white border : a chip in the contended ...
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • Broken +3I have noticed that some members on this forum prefer to repair Spectrums instead of just buying another one from ebay. I would like mine fixed at so…

    ... random border color, and random pattern on screen. Now the test: remove ... the wire from the modulator. Does the border ... /> - The computer turns the border color into white and hangs ... If the computer turns the border color into white and hangs ...
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    [QUOTE=JamesD;482918]If you can use ELSE it should look like this.
    [CODE]110 REM COMB SORT V2
    ...[/CODE][/QUOTE]

    Hi James,

    Coded up your V2 Comb Sort and got the following results:

    Paddy's original V1 Comb ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 7:
    PAUSE 1:
    BORDER 0:
    CLS :
    PRINT ... data..."
    260 REM Create Test Data
    270 LET z ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 7:
    PAUSE 1:
    BORDER 0:
    CLS :
    PRINT ... data..."
    250 REM Create Test Data
    260 DIM l ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... be pressed (useful just to test with a screen) and starts ... write each BYTE to the border during the download process so ... can see it working. The border changes to RED if the ...
    ASM ASM October 2010 Hardware
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 7:
    PAUSE 1:
    BORDER 0:
    CLS :
    PRINT ... data..."
    220 REM Create Test Data
    230 RANDOMIZE 100 ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…

    ... 7:
    PAUSE 1:
    BORDER 0:
    CLS :
    PRINT ... data..."
    220 REM Create Test Data
    230 RANDOMIZE 100 ...
    Einar Saukas Einar Saukas October 2010 Sinclair Basic
  • Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…

    ... ;485447]At power on, the border colour is white and the ... the +3 failing its self test. The exact colour tells you ...
    spodula spodula October 2010 Hardware
  • ZX Microdrive endlessly spinningHi, I've got 2 ZX Microdrives that behave very similarly, basically they seem to be receiving commands nicely, but no matter whether i LOAD SAVE or …

    ... ";1;"TEST"[/CODE] and press ENTER.

    The border should flash ... round of flashing black/white border where the computer is now ...
    Jimmy Jimmy October 2010 Hardware
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... logic. Setting the border to a specific colour ... br />

    ; Logic test program using border colour change.

    out (254),a ; Border RED

    ; ------------
    ASM ASM November 2010 Development
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... that loads at 24832 to test the 59 BYTES of startup ... ; ld r,a

    border db 62,0 ; ld a ...
    ASM ASM November 2010 Sinclair Miscellaneous
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... required to turn Cybernoid (the test game) into a self booting ... ; ld r,a

    border db 62,0 ; ld a ...
    ASM ASM November 2010 Sinclair Miscellaneous
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... correct place... I put a border change loop before the RET ... ; ld r,a

    border db 62,0 ; ld a ... byte [iff2],243 ; DI
    test byte [ebp+SNA_iff],4 ; IFF2 ... 0..8
    mov byte [border+1],al

    mov ...
    ASM ASM November 2010 Sinclair Miscellaneous
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... />
    ; Free to use unoptimized test program to draw two sprites ... /> ld a,0 ; Colour for BORDER
    out (254),a ; Set ... BORDER
    ret


    ; ...
    ASM ASM November 2010 Development
<1…13141516171819…34>

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