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  • Paging memoryI've been thinking about a possibility of paging blocks of memory to and from disk. Imagine dividing usable 32KB of Speccys RAM (why do they call it …

    ... possibility of paging blocks of memory to and from disk. Imagine ... it 48K, btw?) into 1KB memory blocks.

    Each ... OS would attach bitmask of memory blocks that this process uses ... OS would compare process memory bitmask to the memory track from OS ...
    tstih tstih October 2011 Development
  • Display half a screenWorking in 128 Basic and saving screens to memory via - SAVE! "image" SCREEN$ . Is it possible to display just the top half (or the bottom half) of t…

    Working in 128 Basic and saving screens to memory via - SAVE! "image" SCREEN$ . Is it possible to display just the top half (or the bottom half) of the screen ? (leaving the bottom half of the previous screen visible). Thanks in advance.
    Nonsense in BASIC Nonsense in BASIC October 2011 Sinclair Basic
  • Books for BASICIs there any godo books out there to learn BASIC ? I want to go from begininer to advanced really even though back in the day I used to write games …

    ... books out there to learn BASIC ?

    I want to ... would still like to use BASIC as well.

    thanks
    morcar morcar October 2011 Sinclair Basic
  • AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…

    ... the above mentioned operations from BASIC. Syntax is explained in the ...
    Battle Bunny Battle Bunny October 2011 Sinclair Basic
  • SP1 and memoryWhile developing my program, I've run into memory related issues and haven't (yet) run into any advice over how SP1 uses memory. The examples all sb…

    ... advice over how SP1 uses memory.

    The examples ... some statically defined stuff in memory at some point above ... 50000.

    What memory addresses should I avoid when ... br />
    Generally, how much memory should I allocate with sbrk ...
    Winston Winston October 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…

    ... otherwise slow to do from BASIC.

    * find array 'a ... can be calculated by the BASIC program; see lines 15 & ...
    Battle Bunny Battle Bunny October 2011 Sinclair Basic
  • BASIC menus for PlusD discsIs it possible to use BASIC to code custom autoloader menus for PlusD discs? For instance, I can make a disc copy of Dizzy Collection and could make…

    Is it possible to use BASIC to code custom autoloader menus for PlusD discs?

    For instance, I can make a disc copy of Dizzy Collection and could make a menu to load the programs..

    How feasable would it be?

    Thanks.
    zeropolis79 zeropolis79 October 2011 Sinclair Basic
  • What memory address?If you poke 96 and 236 what would the memory address be? I've forgot how to work it out!!! :-?

    If you poke 96 and 236 what would the memory address be?

    I've forgot how to work it out!!! :-?
    daveysludge daveysludge November 2011 Sinclair Miscellaneous
  • How to use Spectaculator 7.01 for BASIC ?It does not work for me. Problems with the keyboard - in 48 and 128 Mode. Nor can I move downwards with the "Down-Arrow" from: 128 TAPE LOADER 128 BA…

    ... LOADER
    128 BASIC
    CALCULATOR
    48 BASIC
    My prime ... use my registered Spectaculator for BASIC programming, but it seems to ...
    Tommy F-H Tommy F-H December 2011 Emulators
  • Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…

    ... =0&turns=0&memory=0&language=0& ... =0&turns=0&memory=0&language=0& ... to be:
    Header and Basic loader using ROM-timings and ...
    lfaria lfaria December 2011 MIA/STP/SDP
  • How to join 2 basic programs? having no luck with basinHow do you join two programs together to save writing it up again. Here's my problem... I'm trying to add pictures I have made to a basic text base…

    ... I have made to a basic text based game i am ...
    rustyredline rustyredline December 2011 Sinclair Basic
  • Why are the same size memory cards different sizes?I've heard before that two memory cards or USB sticks can have the same official capacity, but be different capacities in reality, and I'm not talkin…

    ... 've heard before that two memory cards or USB sticks can ... the case here) that different memory cards (and USB sticks, though ... , GB, etc) is lower than memory of the supposedly equivalent size ...
    ewgf ewgf December 2011 Chit chat
  • Trying to remember an old text based game I used to play...Hi all, hope u had a nice Christmas.. I've been scratching my head for some time now trying to remember the name of an old game I used to play on my …

    ... memory is sketchy...

    All I remember is the basic layout ...
    RetroGamerUK RetroGamerUK December 2011 Games
  • Can someone shorten this line of BASIC for me?I think if Sinclair Basic had a modulo operation this line could be a lot shorter:[CODE]PRINT AT cy,cx; PAPER 7-((cx/2=INT (cx/2))*(cy/2=INT (cy/2)))…

    I think if Sinclair Basic had a modulo operation this ...
    bigjon bigjon January 2012 Sinclair Basic
  • BASIC: Find the nearestHello guys) A few days ago I found oldie ?Jeux et casse-tete a Programmer? by Jacques Arsac (Paris?85) and suggested my nephew to try a few in Basic…

    ... to try a few in Basic. He chose Game #8: Shadok ...
    NRA NRA January 2012 Sinclair Basic
  • A 30th Anniversary ProjectHappy new year (belatedly...) So with the 30th anniversary approaching, I've decided to do a hardware project to celebrate it. Something hands-on (o…

    ... plate of the capacitor. The basic theremin design for each channel ... gets halted every time contended memory is used (so isn't ... is fine (as is the memory, which won't be used ...
    Winston Winston January 2012 Hardware
  • Interesting speed increase...Hi Folks, You may already know the following but I found it "interesting". I have been developing a model railway timetable program in BASin for th…

    ... data population left. The main BASIC program is 17.1K in ... speed despite the extra free memory. However, if I renumber the ...
    Paddy Coleman Paddy Coleman January 2012 Sinclair Basic
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... is that it uses more memory (obviously), but I find that ... uchar backwalls[];


    // Memory to define the background.
    Timmy Timmy January 2012 Development
  • How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…

    ... require I have as much memory available as possible. I'm ...
    R-Tape R-Tape January 2012 Development
  • Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…

    ... 's worth) with data from memory location 53000, I've written ...
    daveysludge daveysludge January 2012 Development
  • +3e with DivIDE systemsIf we replace old R-GAL chip on original DivIDE with new XR-GAL (this is only firmware for GAL chip) then will possible DISABLE or ENABLE any DivIDE …

    ... /> If any code switch +3 basic to USR0 mode (SPECTRUM command ... 128kB memory.

    For return from 48basic to +3 basic we ...
    velesoft velesoft January 2012 Hardware
  • storing machine code in BASICA couple of years ago I posted a routine for storing machine code between PROG & VARS, based on an idea in Toni Baker's "Mastering Machine Code". Thi…

    ... saved & loaded with the BASIC, as if it was in ... after the last line of BASIC, even though the m/c ... and doesn't need any BASIC to be typed other than ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • Beta/Sam/Master basic as spectrum ROMWith emulators being trivial to use to insert new ROMs into - and even in the physical world, RAM in place of ROM by use of a modified multiface or s…

    ... be to get an improved basic into that first 16k? Obviosuly ... been minor tweaks to sinclair basic.

    What if one ... went for beta basic (or its progeny) instead? Reckon ...
    Gedlion Gedlion February 2012 Hardware
  • joining lines of BASICDue to overwhelming demand - well, one demand - well, more of a suggestion, really - here's a routine to join together lines of BASIC. The vertical c…

    ... to join together lines of BASIC. The vertical cursor motion code ... include a "dividing lines of BASIC" option as well - edit a ...
    Battle Bunny Battle Bunny February 2012 Sinclair Basic
  • Spectrum 48K - upper memory MIAI have recently acquired a ZX Spectrum which, according to the sticker on the bottom, should be a 48K model. It's an Issue 3 board, with upper memory…

    ... Issue 3 board, with upper memory chips (8xTI4532) and supporting logic ... does not see the extended memory. PRINT PEEK 23732 + PEEK 23733 ...
    unholy unholy February 2012 Hardware
  • Minimal BASICAndrew Owen has just uploaded [B]Standard ECMA-55: Minimal BASIC [/B]to the Full Books archive on WOS. Thanks! [url]ftp://ftp.worldofspectrum.org/pu…

    ... [B]Standard ECMA-55: Minimal BASIC [/B]to the Full Books ... the ANSI Minimal standard for BASIC.
    The two standards are ... in the origins of Sinclair BASIC which adhered closely to the ... no ON GOTO in Sinclair BASIC (a good substitute exists) but ...
    Geoff Geoff February 2012 Sinclair Miscellaneous
  • Using Boriel's ZX Basic to learn assemblyI wrote a small guide. Hopefully some people will find my gibberish useful - especially people looking at first steps in machine code, where I think …

    ... -inline-assembly-functions-into-zx-basic-t729.html[/url]
    Gedlion Gedlion February 2012 Development
  • stuck on recursive functionI want this function to PEEK 'l' bytes from memory starting at 's' and return them as a string, but however much I fiddle about with quoting and pare…

    ... to PEEK 'l' bytes from memory starting at 's' and return ... get either "Out of memory" or "Nonsense in BASIC". How can I ...
    Battle Bunny Battle Bunny February 2012 Sinclair Basic
  • Memory move routine?Hi Folks, I have been searching for the thread that covers the memory move routine that uses a$=b$ via DEF FN. I thought it was written by Battle B…

    ... the thread that covers the memory move routine that uses a ...
    Paddy Coleman Paddy Coleman February 2012 Sinclair Basic
  • AZIMUT / Frecuency spectrum[code]start DI LD HL,#7F40 LD D,#58 loop LD B,#00 bucle1 LD A,H IN A,[#FE] XOR A,C AND A,L J…

    ... to fit in free ROM memory.

    Bar space to ... />
    This can run in basic RANDOMIZE USR start
    Z80user Z80user February 2012 Development
<1…14151617181920…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
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