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<1234567…34>
  • Speeding up BasicHi, Does anyone know whether it is faster to use variables than numbers in Sinclair basic? What I mean for example, is Poke A,D quicker than Poke 5…

    ... entry and adds the hidden floating point or integer form after a ...
    Geoff Geoff July 2005 Sinclair Basic
  • Speed of variables vs. POKE/PEEKGreetings, I'm sure I could probably find this out after careful study of the 48K ROM disassembly, but I was wondering whether someone already knew …

    ... , and we don't need floating-point/large numbers, wouldn't it ...
    Philip Kendall Philip Kendall September 2005 Sinclair Basic
  • Speed of variables vs. POKE/PEEKGreetings, I'm sure I could probably find this out after careful study of the 48K ROM disassembly, but I was wondering whether someone already knew …

    ... about that either, given the floating-point overhead.
    GOC GOC September 2005 Sinclair Basic
  • Speed of variables vs. POKE/PEEKGreetings, I'm sure I could probably find this out after careful study of the 48K ROM disassembly, but I was wondering whether someone already knew …

    ... about that either, given the floating-point overhead.
    [/quote]

    Alcoholics Anonymous Alcoholics Anonymous September 2005 Sinclair Basic
  • speccy-basic compilerHi everybody! i'd like to compile spectrum basic programs to z80 asm to make them work faster. I've tryed a lot of compilers running on speccy but i …

    ... )

    SOFTEK'S FP Floating point compiler isn't so fast ...
    chaosmongers chaosmongers January 2006 Sinclair Miscellaneous
  • Mess around with basicIf you have a game that was written in basic, e.g Football Manager, how do you look at the code that was used? thanks

    ... is useful because I get floating point maths for free, but isn ...
    Dunny Dunny January 2006 Sinclair Basic
  • Homing missile routine - help neededI am attempting to write a routine which will allow a missile to home in on a player. Basically the sort of thing you see in most shoot-em-up games. …

    ... try using fixed-point arithmetic as opposed to floating-point. You probably only ... be significantly faster than their floating-point counterparts; you'll also get ...
    GOC GOC March 2006 Development
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... the advantage of not using floating point. :-)

    natural logarithms to ...
    Geoff Geoff May 2006 Sinclair Basic
  • OpenZXRom v2006-05-17 releasedJust knocked out a new release of OpenZXRom last night - a GPL licensed functional replacement for the original Spectrum ROM. [url]http://matt.west.…

    ... Speccy's existing 5-byte floating point format (because it's embedded ...
    gasman gasman June 2006 Development
  • compilerI am currently developing a sudoku game for the old faithful speccy. My idea is to write the code in basic and then compile it to m/c because i suck …

    ... general. It's only with floating point maths and generally slow BASIC ...
    Matt_B Matt_B June 2006 Development
  • compilerI am currently developing a sudoku game for the old faithful speccy. My idea is to write the code in basic and then compile it to m/c because i suck …

    ... found comparing Softek's FP floating point compiler to Softek's IS ...
    chaosmongers chaosmongers June 2006 Development
  • Sintech titles no longer denienced!8 years after the initial denience ( June 1998 ), the 3 Ultrasoft titles that [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=Sintech"]Si…

    Bear in mind that Spectrum BASIC doesn't do integer numbers - all numbers are floating point by default.
    Lee Tonks Lee Tonks July 2006 Games
  • Sintech titles no longer denienced!8 years after the initial denience ( June 1998 ), the 3 Ultrasoft titles that [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=Sintech"]Si…

    ... integer numbers - all numbers are floating point by default.[/QUOTE]

    floating point, but both numbers are represented ... integers specially encoded within the floating point representation.

    Anyway, a ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Games
  • Sintech titles no longer denienced!8 years after the initial denience ( June 1998 ), the 3 Ultrasoft titles that [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=Sintech"]Si…

    ... -- spectrum basic mixes integers and floating point, but both numbers are represented ... integers specially encoded within the floating point representation.

    Anyway, a ...
    Lee Tonks Lee Tonks July 2006 Games
  • Sintech titles no longer denienced!8 years after the initial denience ( June 1998 ), the 3 Ultrasoft titles that [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=Sintech"]Si…

    ... -- spectrum basic mixes integers and floating point, but both numbers are represented ... integers specially encoded within the floating point representation.

    Anyway, a ...
    nekdo123 nekdo123 July 2006 Games
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... of Error boxes saying Invalid Floating Point Operation. Spin ends up closing ...
    FrankT FrankT August 2006 Emulators
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... of Error boxes saying Invalid Floating Point Operation. Spin ends up closing ...
    Lee Tonks Lee Tonks August 2006 Emulators
  • Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…

    [QUOTE=gasman]Normally, floating point numbers on the Spectrum are ... be represented in the standard floating-point notation with complete accuracy.
    floating-point notation immediately on sight - then ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Development
  • Spectrum Basic InterpreterHello. I started this days a strange project: an interpreter of the Spectrum Basic that can run in a Spectrum. Here is a very preliminar version: […

    ... also the issue of the floating point calculator. Without this, the capabilities ...
    NotFound NotFound January 2007 Development
  • basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…

    ... in integer format so no floating point to integer conversion).

    Alcoholics Anonymous Alcoholics Anonymous February 2007 Development
  • basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…

    ... by replacing the very slow floating point routines in the ROM and ... at some point had a compiler that went ... raises another possible speedup... the floating point routines.

    Anyway, once ...
    JamesD JamesD February 2007 Development
  • If a C64 can do it...Forgive me if this isn't the right section. We've seen coders surprising us over and over again with excellent demos and things that a few years ago…

    ... -32768 to 32767 if signed. Floating point takes up 5 bytes in ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Are you a serious programmer of the Spectrum?A statement at the back of "The complete Spectrum ROM disassembly". [quote] The "Complete Spectrum ROM disassembly" is a must for all serious progra…

    ... lower three bytes of the floating point form of -65536 to zero ...
    Geoff Geoff March 2007 Sinclair Miscellaneous
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... got stuff right enough that floating point worked (which it did). As ...
    Winston Winston March 2007 Development
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... got stuff right enough that floating point worked (which it did). As ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Possibly a little OT: Exporting ROM function addresses to the Z88DKOK, so I'm using the Z88DK. It's entirely possible that some documentation has bypassed me. But assume I have a function in ROM, say, at address 0xF0…

    ... interfered with integer printing in floating point printf. I haven't looked ...
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • uMIA: Spectrum Spectacular / AutomataUnfortunately I lost this auction, just barely.. *sigh* Info and pictures here: [url]http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=14010672…

    Great news Peo, many thanks for the info, I'll gladly offer my services if required.
    Ah, at least you won Floating Point Forth though :-)

    Cheers

    Andy
    Andrew Barker Andrew Barker April 2007 MIA/STP/SDP
  • Converting m$ to dataI created a maze using a matrix of 704 characters. In order to save memory, and since the maze it's just walls and spaces which could be interpreted …

    ... that printed the maze using POINT, PLOT and PEEK to store ... , I could use POKE and POINT, but I know there's ... in order to hold a floating point number. Even if you store ...
    BloodBaz BloodBaz May 2007 Sinclair Basic
  • Cannon BubbleHello! I would really like to transffer this game ( [url]http://cezgs.computeremuzone.com/eng/card.php?id=14[/url] ) to my REAL +3 disk drive. Becau…

    ... non-zero it's a floating-point value and a lot more ...
    robert@fm robert@fm June 2007 Games
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... the math library (-lm, for floating point math only; integer multiplication and ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
<1234567…34>

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Related Threads

  • Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…
  • BASin floating point issue...Hi Folks,<br /> <br /> I have been very happy with BASin and found it to be an excellent tool. However, in the last few days a strange error has sta…
  • BASin floating point issue...Hi Folks,<br /> <br /> Reposting here as I think I put it in the wrong section before - sorry.<br /> <br /> I have been very happy with BASin and fou…
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