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<1234567…34>
  • WANTED Machinecode Routine for Paging in Betadisk TR-DOS v5 ROMI try to build a small MCode-program which writes the TR-DOS-ROM v4 / v5 to RAM adress 40000 an up. It´s working on TR-DOS v4 / Betadisk 48k: C…

    ... />
    LD C,0 ;Set DOS Routine 0 (INIT/RESET DOS)
    Luzie Luzie December 2015 Hardware
  • 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 ... ;update IX for load bytes routine
    LD DE,$C000
    ; JP hexbyte ;RETurn via hexbyte routine (which follows)

    ... get changed by LOAD CODE routine
    LD DE,$4000 ...
    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 ... jump into the MAIN routine, leaving the ...
    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 ... jump into the MAIN routine, leaving the ...
    Winston Winston July 2009 Development
  • 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 ...
    300 REM USE THE ROUTINE
    310 FOR I=1 ...
    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 …

    ... main program above a RAMTOP that I'll set. Then I can ... be safely protected by lowering RAMTOP.

    Just one ... my machine code routine is running, to set RAMTOP to equal PROG and ... 've written a message print routine that writes direct to screen ...
    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…

    ... for DG80. Rom also contain routine for copy ZX ram data ... 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…

    ... that the ROM's TEST_ROOM routine requires at least 80 bytes ... use your putram procedure to set RAMTOP there successfully?

    I ... ,(23730) ;(RAMTOP) = old RAMTOP
    to..
    ld de,(24045) ;(RAMTOP) = old RAMTOP
    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…

    ... . I tried it with my routine - lzdpack0 - which will run in ... adding an extra m/c routine to set RAMTOP down to 23843 with ... 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…

    ... . I tried it with my routine - lzdpack0 - which will run in ... adding an extra m/c routine to set RAMTOP down to 23843 with ... so that I could restore RAMTOP and the stack and then ... a tape image. The depack routine is in screen ram though ...
    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…

    ... Bunny's PUTRAM code to set RAMTOP for the BASIC loader without ... games, with the megaLZ depacking routine and the PUTRAM code. This ...
    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…

    ... the middle of the unpack routine, if I understand correctly what ... short basic loader for Kokotoni set ramtop at the beginning before loading ...
    Speccy_James Speccy_James February 2014 Development
  • Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…

    ... of the required command class routine (ROM)
    0x5B54 PUSH ... routine pass the command code to the A register and set the ... NC,1EDA ; REPORT-M - RAMTOP no good
    0x5BEA EX ... ;
    0x5BEB LD (5CB2),HL ; Set RAMTOP
    0x5BEE POP DE ; Get ...
    lfaria lfaria August 2016 MIA/STP/SDP
  • Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…

    ... then call the ROM routine that does a PRINT ... that do a limited set of things. e.g ... write your own little routine that does repeated adding ... what HL might be set to, so strange things ... set RAMTOP with CLEAR 44799

    Then POKE in my routine ...
    joefish joefish September 2016 Sinclair Basic
  • DivIDE allram mode help neededHi guys, are there any DIVIDE wizards out there that can explain how i page in the allram and add a rom file to it i sometimes need to load spect…

    ... mode:[/u]

    1) set ramtop at under 49152
    2 ... , else during LDIR jump interrupt routine to divide rom...
    ld ...
    velesoft velesoft March 2017 Sinclair Basic
  • 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
  • Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…

    ... I should call the DOS SET 1346 routine. The problem is that ... , except that simply calling the routine with RANDOMIZE USR 319 won ...
    Alessandro Grussu Alessandro Grussu February 2013 Sinclair Basic
  • 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 ...
    Speccy_James Speccy_James February 2014 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
  • Quicker Computing:WOS-'documentation' CSS FAQ link did not help.

    [quote]
    Are you referring to the 'SLOW' and 'FAST' commands?[/quote]
    yes, the SET-FAST routine is called to reset bit 7 of CDFLAG, and then bit 6 is reset.
    dalmudlee dalmudlee August 2005 Sinclair Miscellaneous
  • 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
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    Well, there were several situations in the past that I wanted to use midi on the Spectrum with.

    1. I used the Midi out port on a ZX Spectrum 128K heatsink model to send data to a Yamaha Cs1x for my first laserharp.
    That laserharp had ten ...
    bverstee bverstee March 2010 Hardware
  • +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
<1234567…34>

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