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<1234567…34>
  • quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…

    ... or an address (if referencing free RAM). Any string names can be ... between two different segments of free RAM). Although the routine will copy ... . Note that if a free RAM address is a calculated value ... 6912)
    copies all of display file to S$
    45 ...
    Battle Bunny Battle Bunny July 2013 Sinclair Basic
  • Making BASIC occupy less RAM?I risk being told to search the forums and the entire archive of type-ins, but here it goes... Is there any known utility to do all the hard work of…

    ... would load a BASIC listing in high RAM, and then ... a routine in BASIC (yeah, ... the modifications in BASIC, fix the BASIC header using ... routine to save the modified BASIC listing.

    BASIC listings that use ...
    zxbruno zxbruno January 2010 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... this BASIC "swift copy" technique to copy strings to/from free RAM or ... copy chunks of RAM around quickly ... destination or source is in free RAM then the appropriate section ... 33
    copies all of display file to S$
    49 ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... in the printer buffer or display file).

    The ... 30618]"storing machine code in BASIC"[/thread] from last August).
    BASIC"/regular BASIC timing comparison by writing a ... . Using this trick for copying free RAM as strings it took 8 ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... 's still all done with BASIC.

    [code]
    2 ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... RAMTOP to down in the display file. I use the latter ... be referenced by LET from BASIC afterwards. Also, if shifting ... a DEFADD destination string in free RAM which I'll summarise again ... thus giving a "Nonsense in BASIC" error when the "(" is encountered ...
    Battle Bunny Battle Bunny February 2012 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... RAMTOP to down in the display file. I use the latter ... be referenced by LET from BASIC afterwards. Also, if shifting ... a DEFADD destination string in free RAM which I'll summarise again ... thus giving a "Nonsense in BASIC" error when the "(" is encountered ...
    Paddy Coleman Paddy Coleman February 2012 Sinclair Basic
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... />
    org $2B00 ; free RAM on Atom

    ... ;* scrolls the hi-res text display
    ;**************************************************
    #define ... similar to print@ in Microsoft BASIC
    ;* prntat contains ...
    JamesD JamesD September 2015 Development
  • ANN: Spectrum Host 0.40 for BBC BASICZXHost 0.40, the ZX Spectrum host for BBC BASIC now has working microdrive support. You can load, save and catalogue microdrives, and any other devic…

    ... ZX Spectrum host for BBC BASIC now has working microdrive support ... updates also include BBC BASIC runnable in RAM and colour mapping extended ...
    Jonathan Harston Jonathan Harston July 2006 Development
  • Old code uploadedI'm gradually ploughing through my microdrive catridges and I am uploading the recovered contents at [url]http://mdfs.net/Software/Spectrum/Microdri…

    ... disassembler.
    * Emulated teletext display.
    * 31K RAM disk.
    * Code to ... create a thicker font.
    * Display a ... Jet Set Willy screen.

    All free for ...
    Jonathan Harston Jonathan Harston August 2006 Development
  • The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…

    ... Compiled BASIC (the pure BASIC part is to manage stuff in the RAM ... disk back and forth, the Compiled BASIC part is ... need to stay in BASIC (for the RAM disk stuff) - I know ... that BASIC has a ISR which ...
    na_th_an na_th_an November 2006 Sinclair Basic
  • BASin r14d - Final bugfix for the r14 seriesOk, there's not a great deal to "show" here, as most of the work has been going on "under the hood" so to speak. And there's been a [i]lot[/i] of wor…

    ... highlighted as numbers in the BASIC editor.
    Fixed - The ... ) will also resume from a BASIC breakpoint now.
    Fixed - ... evaluations (like USR 7962, the "free RAM" routine), would time out or ... does not yet support +3 BASIC. (Jimmy)
    Fixed - Getting ...
    Dunny Dunny December 2008 Emulators
  • A Miscellany of Dangerous TipsHere's a selection of ideas for using some of the more obscure system variables which I've found handy on occasion. They can be very convenient if us…

    ... can be assigned anywhere in free RAM and used independently of ... are not otherwise possible from BASIC alone.

    References ... br /> * storing machine code in BASIC (Jan)
    * more on ... br /> * enhanced GOSUB/GOTO (in BASIC) (May)
    * How much ...
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • TAP files for the TS 2068Hi, just recently bought a TS 2068 and found "Taper" on the web. Downloaded it and began to use it only to discover that it would not open TS 2068 fi…

    ... "OS RAM Routines" in lower RAM below the BASIC program. Thus the BASIC program ... started much later in RAM, and why the maximum of free RAM ... was 38652 bytes, much less than Spectrum's free RAM.
    Sparky Sparky December 2002 Sinclair Miscellaneous
  • How powerful were the Moon-landing computers?I've meant to ask this before, but I got sidetracked; does anyone know how powerful the computer(s) NASA used in the 1969 Moon landings were, in comp…

    ... of memory, and 4kb of ram. There were two of these ... are also known) used a basic display and a 'DSKY' keyboard. This ... a number. The keyboard and display weighed another 10 kilos.
    Lee Fogarty Lee Fogarty April 2006 Chit chat
  • Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…

    ... free, it may mean everything :D

    Speccy nowhere writes free RAM ... for Basic when starts. Even no command ... free RAM for Basic not because something uses much RAM, but because part of RAM ...
    piters piters March 2007 Hardware
  • Don't shoot me...Definitely off-topic, and most possibly dangerous... There's a preview of the first chapter of the c64 book available online at: [URL]http://www.c6…

    ... /> ****COMMODE 64 BASIC V2****
    64k RAM SYSTEM 38911 BASIC BYTES FREE
    READY ...
    dm_boozefreek dm_boozefreek August 2007 Chit chat
  • Using a multiface to exit to BasicBack in the days I was always fascinated with the idea of getting access to BASIC listings inside a program or game. I was able to work a way around …

    ... tricky. The address yields the BASIC variables memory start address. So ... is loaded ALONG WITH the BASIC, right after it. If you ... as CODE above your own BASIC and then PEEK it a ... ), so you have plenty of free RAM to load your block.
    Marcelo Marcelo August 2007 Sinclair Basic
  • What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…

    ... 's inline assembler for Sinclair BASIC which provides exactly the same ... but leaves you with more free RAM for BASIC than you got on ... JGH's patch of BBC BASIC (Z80) for the Speccy, which ... so seamlessly with the native BASIC interpreter, as the builtin ROM ...
    Digital Prawn Digital Prawn September 2007 Sinclair Basic
  • What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…

    ... 's inline assembler for Sinclair BASIC which provides exactly the same ... but leaves you with more free RAM for BASIC than you got on ... JGH's patch of BBC BASIC (Z80) for the Speccy, which ...
    DEATH DEATH September 2007 Sinclair Basic
  • What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…

    ... s inline assembler for Sinclair BASIC which provides exactly the ... leaves you with more free RAM for BASIC than you got on ... JGH's patch of BBC BASIC (Z80) for the Speccy, ... G. Harston's BBC BASIC port was written from 1989 ... /M port of BBC BASIC also had an inline ...
    zub zub September 2007 Sinclair Basic
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... printerbuffer
    ; #5CCB - #5DFF BASIC startprogram (23755 - 23807 ??? #5CFF) ...
    ; #5E00 - #7DFF 8K BASIC ROM
    ; #7E00 - #9DFF 8K ... the BASIC-start.
    This code could give more free RAM.< ... /> hl, de', af = free registers for multiple use
    Dr BEEP Dr BEEP August 2008 Sinclair Miscellaneous
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... generates a "Nonsense in BASIC" error because the ROM processes ... see why the "Nonsense in BASIC" error occurs.

    ... instead of "=" the "Nonsense in BASIC" error is generated.
    ... handle both string slicing and free RAM slicing without any extra ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... generates a "Nonsense in BASIC" error because the ROM processes ... see why the "Nonsense in BASIC" error occurs.

    ... instead of "=" the "Nonsense in BASIC" error is generated.
    ... handle both string slicing and free RAM slicing without any extra ...
    Paddy Coleman Paddy Coleman April 2011 Sinclair Basic
  • Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…

    ... RAMTOP variable to find the free RAM like so:

    10 ... *PEEK 23731
    20 let basic = PEEK 23635+256*PEEK 23636 ... ramtop-basic

    However, the above seems to show more free ...
    Arjun Arjun June 2011 Sinclair Basic
  • space available in bytes - questionHi, question: - if i create a *.txt file in pee cee: if empty it will show 0 bytes if i put text "abcde" it will show 5 bytes if i put texte (in 2 l…

    ... " will give you the free RAM available for BASIC.

    10 PRINT ...
    Battle Bunny Battle Bunny August 2012 Sinclair Basic
  • space available in bytes - questionHi, question: - if i create a *.txt file in pee cee: if empty it will show 0 bytes if i put text "abcde" it will show 5 bytes if i put texte (in 2 l…

    To expand upon my free RAM comment. The function mentioned ... 1100 if there was no BASIC program in memory, but ... 23731); would show another 40kb free above RAMTOP.

    RAM pages as well, presuming ... are occupied with a BASIC program.
    Battle Bunny Battle Bunny August 2012 Sinclair Basic
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... . Then, as there was still free RAM on the ZX-One, Alessandro ... the possibility to enable 128K BASIC support (which I personally don ...
    phoenix^ra phoenix^ra July 2013 Announcements
<1234567…34>

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