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<1234567…34>
  • Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…

    ... as well as setting ramtop (23730)? If I set ramtop in my code I ...
    Speccy_James Speccy_James February 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... use your putram procedure to set RAMTOP there successfully?

    23730) ;(RAMTOP) = old RAMTOP
    to..
    ld de,(24045) ;(RAMTOP) = old RAMTOP ...
    ld de,(23730) ;(RAMTOP) = old RAMTOP
    ex de, ...
    Speccy_James Speccy_James January 2014 Development
  • Important for Game/Demo DevelopersHello Spectrum-friends, I just finished our new Disc-Magazine SCENE+ with newest games, demos, graphics and sounds from the Spectrum Scene. However,…

    ... RAM below 25000. If you set RAMTOP to 23999 you get trouble ... memory and have to put RAMTOP to 24499 or even lower ...
    Speccyman Speccyman April 2008 Development
  • Reading PC text files from BASIC!I was playing around with my DivMMC Enjoy! and managed to work out that it's dead easy to load PC .TXT files into the Speccy - I've got them viewable…

    ... do it...

    1) Set RAMTOP to a suitable value to ...
    PrimitivePerson PrimitivePerson February 2016 Sinclair Basic
  • 128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…

    ... . So let's say I set RAMTOP to $5999 and load in ...
    adrian_singh adrian_singh May 2017 Development
  • Spectrum edge connectors and 'Dataman Softy S4'Hi, I moved this from the sales thread because it seems more appropriate...anyway... I was twerping around the idea of turning a Spectrum into a we…

    ... NEW operation if you've set RAMTOP).
    Anonymous Anonymous November 2002 Sinclair Miscellaneous
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... /> I should be able to set up data in Banks 3 ... /> Should be okay. You've set RAMTOP < 32768?

    What ...
    Woody Woody August 2003 Sinclair Basic
  • Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…

    ... of the way of Basic, set RAMTOP to the lowest address needed ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • Basic corruptionDoes anyone have any tips or solutions for when a Basic listing becomes over a certain size and starts to get corrupted due to paging... I remember …

    ... have Cleared enough Pages, and set Ramtop high enough.

    Also ...
    CKay CKay August 2004 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…

    ... up to where you've set RAMTOP. An example of using it ... machine code toolkit routines above RAMTOP and then clears itself out ...
    Matt_B Matt_B May 2006 Sinclair Basic
  • TS2068 - SPECTRUM 48k Compatible Games ListHey guys... Follows the list. These are just the games I tested, there is still a long way ahead... As soon as more games are tested, their names w…

    ... . Some might also try to set RAMTOP too low or load code ...
    Alcoholics Anonymous Alcoholics Anonymous December 2006 Games
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... the ball rolling :

    Set RAMTOP to below 32768. Assemble at ... br /> CALL prmsg
    DEFM "RAMTOP set to"
    DEFB ' '+$80
    DEFM "Copying char set into new ROM"
    DEFB ... reloc2:
    LD HL,$3C00 ;set CHARS
    LD ($5C36),HL ...
    Jimmy Jimmy April 2008 Emulators
  • Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …

    ... the BASIC ROM available. You set RAMTOP below the channel installation code ... 's all set up you CLEAR to the standard RAMTOP value and ...
    chev chev July 2009 Development
  • Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …

    ... the BASIC ROM available. You set RAMTOP below the channel installation code ... 's all set up you CLEAR to the standard RAMTOP value and ...
    Winston Winston July 2009 Development
  • +3 FaultsI have some Spectrum +3s for testing - looks like they all need drive belts. One will not start up and shows a screen of yellowy green, then one of …

    ... they don't fail (they set RAMTOP accordingly). I don't know ...
    Zup Zup May 2010 Hardware
  • compressing basicI thought I'd ask here instead of the basic forum.. in the sense of giving me 1 command line, and NOT the whole listing joined up etc. and it uncom…

    ... me would be:

    * Set RAMTOP as low as possible while ... (start of system variables) to RAMTOP to sequential chunks of memory ... above RAMTOP. (It would be best to ... 're all stacked up above RAMTOP, save them as one CODE ...
    Battle Bunny Battle Bunny September 2010 Development
  • Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…

    ... the BASIC 'CLEAR' command to set RAMTOP (that sets the highest address ... emulator should be able to set up a virtual tape for ...
    joefish joefish September 2011 Development
  • Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…

    ... the BASIC 'CLEAR' command to set RAMTOP (that sets the highest address ... emulator should be able to set up a virtual tape for ...
    meow meow September 2011 Development
  • Space EvadersSpace Evaders: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0026969[/url] look like an exact copy of Space Raiders by Psion. I know that …

    [quote]According to the article, this game should work on the 16K as well, but this doesn't seem to be correct.[/quote]

    Works okay on 16k, the loader used is just an example that they give. Just set ramtop below the proggy ie. Clear 24499
    Bandit Bandit April 2012 Infoseek database
  • SnapToTap R2.3I've added z80 file support and raw binary exporting options to snaptotap. it's still 48k only though. [url]http://arda.kisafilm.org/fish/SnaptoTap…

    ... block into 49152. Remember to set RAMTOP below 49152!

    The ...
    mcleod_ideafix mcleod_ideafix August 2012 Announcements
  • SnapToTap R2.3I've added z80 file support and raw binary exporting options to snaptotap. it's still 48k only though. [url]http://arda.kisafilm.org/fish/SnaptoTap…

    ... block into 49152. Remember to set RAMTOP below 49152!

    The ...
    Arda Arda August 2012 Announcements
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... is wrong. CLS does not set RAMTOP. That line should be CLEAR ...
    Battle Bunny Battle Bunny August 2012 Sinclair Basic
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... is wrong. CLS does not set RAMTOP. That line should be CLEAR ... AND INK
    20 REM SET COLOURS
    30 PAPER 5 ... CLEAR 65329
    100 REM SET NEW RAMTOP
    120 LET START ...
    WibbleBibble WibbleBibble August 2012 Sinclair Basic
  • Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …

    ... due attention to is where RAMTOP is, as I wasn't ... main program above a RAMTOP that I'll set. Then I can ... be safely protected by lowering RAMTOP.

    Just one question ... code routine is running, to set RAMTOP to equal PROG and use ...
    snigfarp snigfarp November 2012 Development
  • Didaktik Gama and M manualsI?m looking for manuals for the Czech Spectrum clones Didaktik Gama and M. Thought this would be an easy task, but I couldn?t find any user or servic…

    ... if you in ZX basic set ramtop to 35000 then after switch ...
    velesoft velesoft August 2013 Hardware
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    I tried assembling with Zeus but I couldn't see the option to save the compiled binary although I could see the hex output so I'll try and input those into basic data statements and save the binary code from memory. I need to set RAMTOP to 24045.
    Speccy_James Speccy_James January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... too big for me to set ramtop for many of the games ... . Some of the games require ramtop so low that I have ...
    Speccy_James Speccy_James January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... extra m/c routine to set RAMTOP down to 23843 with PUTRAM ... so that I could restore RAMTOP and the stack and then ...
    Battle Bunny Battle Bunny January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... extra m/c routine to set RAMTOP down to 23843 with PUTRAM ... so that I could restore RAMTOP and the stack and then ...
    Speccy_James Speccy_James January 2014 Development
<1234567…34>

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