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  • can someone help with a rom routinei have been trying to draw a simple line with a the rom routine , but i just cant get it to work , so if anyone can give me an example in z80 that wo…

    i have been trying to draw a simple line with a the rom routine , but i just cant get it to work , so if anyone can give me an example in z80 that would be great

    TIA
    CodenameV
    CodenameV CodenameV August 2009 Development
  • Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…

    ... />
    Does anyone know which ROM routine to call for the Screen ... what's what in the ROM disassemblies I've read (any ...
    R-Tape R-Tape January 2011 Development
  • Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …

    ... problem with the pixel address rom routine at 8874.

    Going ... by the ZXSpectrum Rom Dissassembly book, I'm trying ... be holding 128 after the routine is run?

    Tobo
    Tobo Tobo September 2015 Development
  • I don't think I'm getting the $22AA Pixel-Add rom routineDear all, I'm misunderstanding how the PIXEL-ADD rom routine works. My code... [code]ld b,175 ld c,1 call $22AA ld (hl),a ret[/code] So…

    ... misunderstanding how the PIXEL-ADD rom routine works.

    My code ... that, I'm assuming the rom routine at $22AA will convert the ...
    Tobo Tobo March 2016 Development
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... how to invoke the LOOKVAR ROM routine to discover where a variable ... don?t cover invocation of ROM routines at all.

    trellis trellis July 2006 Development
  • Rom Routines list ?Exist some document that show detailled the routines on the spectrum ROM ? Ad for the Spectrum +3 ? are they the same or exist more ? Example i was …

    ... the routines on the spectrum ROM ?
    Ad for the ... Example i was watching the Rom routine called [B]PLOT-SUB[/B ... pop bc

    This routine is the same that in ... B]. But what is the routine to handle a DRAW ?< ... that are on the Rom just to use them.< ...
    arfgh arfgh June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... info related to the draw rom subroutine. The Line-Draw require ...
    arfgh arfgh June 2010 Sinclair Basic
  • Using the ROMs PRINT routineI really am starting from scratch again it seems, but how do you utilize the ROM routine to print characters, I think you point te BC register to an …

    ... how do you utilize the ROM routine to print characters, I think ...
    daveysludge daveysludge January 2012 Development
  • What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…

    ... know I could use the ROM routine (It would suffice, any pointers ... I'm asking for a routine :)

    No need for ...
    na_th_an na_th_an October 2013 Development
  • ZX rom type detectionHere is routine for fast detection of zx rom / computer model. [URL="http://velesoft.speccy.cz/other/ZXROMDETECT.zip"]http://velesoft.speccy.cz/othe…

    Here is routine for fast detection of zx rom / computer model.

    routine for detect zx rom type from 48basic rom.
    I ... br /> Routine return register BC=0-7 for ZX rom type or ... B=255 for unknown rom. Routine is small, but detection will ...
    velesoft velesoft January 2015 Sinclair Miscellaneous
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ... [code]
    ;Redefine Keys routine
    ;By Ast A. Moore ...
    call 8859 ;inside ROM routine BORDER ($2294)
    call ...
    ;A crude debounce routine to prevent
    ;registering ... br /> call $3b5 ;ROM beeper routine
    pop ix ; ...
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... is a call to the ROM routine that scrolls the screen. It ... system variable to stop the scroll? message coming up.

    Matt_B Matt_B May 2007 Development
  • Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…

    ... IM1 (use IM2 as the ROM routine takes a variable amount of ... working would be having your scroll routine run in a fixed amount ...
    Matt_B Matt_B May 2009 New game ideas
  • Is there a way to suppress error R Tape Loading Error in Basic when trying to load only part of fileHi, is there a way to suppress error R Tape Loading Error in Basic when trying to load only part of file. E.g.: I have a Tape-Code-File Start f…

    ... to use bits of the ROM without having to write any ...
    Battle Bunny Battle Bunny October 2017 Sinclair Basic
  • TZX and the ZX81Evenin All. EightyOne is now is a state where I can support a more descriptive tape format. I know how some people have been calling for tzx suppor…

    ... tapes use the standard ROM routine. So, for an example ...
    ZX80 with ZX81 ROM retro fitted 1k - 64k ...

    "ROM/RAM type add-ons" gets ... 0 ZX80 ROM
    1 ZX81 ROM
    2 ASZMIC ROM
    ... 3 TREE-FORTH ROM
    MikeW MikeW September 2004 Emulators
  • BEEPing in assemblyI'm using Z88DK and I'd like to know how to produce BEEPs. I know it's a matter of writting very fast to a certain port, but I've read somewhere that…

    ... somewhere that there's a ROM routine ready to be used. Any ... "BEEP 1,0" using the ROM routine?

    If this info ...
    na_th_an na_th_an April 2005 Development
  • Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…

    ... but decided against using a ROM routine and UDGs!
    Any suggestions ...
    jp jp August 2006 Development
  • TZX format questionProbably a daft one, but I like to be sure of these things! For a block type 10 (a standard speed data block), the text states that all values in s…

    ... any value, and still be "ROM-routine-compilant" as it would simply ...
    trellis trellis September 2006 Development
  • Handling RST8 on a +3Well, I've come to that bit of my project that I wasn't really looking forward to (because I don't understand enough about the ZX BASIC ROM) - extend…

    ... enough about the ZX BASIC ROM) - extending the interpreter by the ... not entering the +3's ROM routine in the right place, or ... possibly the wrong +3 ROM is paged in. So:
    Winston Winston July 2008 Development
  • 'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…

    ... be used, but using some ROM routine ?

    thx in advance
    arfgh arfgh June 2010 Sinclair Basic
  • Do a load "file" with ASMFollowing the idea to build a menu with asm, now i need to know how to do a load "file". I can use the Rom routine but i am not sure if the rom rout…

    ... "file". I can use the Rom routine but i am not sure ... if the rom routine accept the filename. I mean ... that the rom routine that is exposed in the ... but without to use the Rom routine. But with or without is ...
    arfgh arfgh June 2010 Sinclair Basic
  • Assembler intricaciesHi all, I've been looking at the internals of a game to see how it all works and I've found some things that I don't understand and can't find any i…

    ... to me when a few rom calls and some compares would ... 's a call to the ROM routine to clear some space in ...
    garethadams garethadams January 2011 Development
  • Z80 sound enginesI'm looking for a decent sound engine to use in a Z80 program I'm writing, but I've no idea which is the best/fastest/easiest to use. I could do wit…

    ... because it uses the beeper ROM routine.

    So, any ideas ...
    polomint polomint September 2011 Development
  • Undefine functionHere's a routine to selectively remove variables from the VARS area and reclaim the space. This can be done partially from BASIC already by assigning…

    Here's a routine to selectively remove variables from ... to minimum size, but this routine works with simple numbers and ... ;ROM routine RECLAIM_2
    SCANNING: equ $24fb ;ROM routine SCANNING
    LOOKVARS: equ $28b2 ;ROM routine ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • Using ATTR detection in machine codeIs there a ROM routine that can be called that reads the ATTR value of a co-ordinate?

    Is there a ROM routine that can be called that reads the ATTR value of a co-ordinate?
    daveysludge daveysludge January 2012 Development
  • What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…

    ... game.

    call 3503 ; ROM routine - clears screen, opens chan 2 ... 's gunbase position,
    ; this routine is called prior to display ...
    Saboteur Saboteur May 2012 Development
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... at address 0xd4d4 (interrupt service routine entry)
    wpoke(0xd4d5, ... to screen
    LDIR
    ; ROM routine, read keys and update clock ... br />
    ; pointers to interrupt routine.

    defb 200,200 ...
    slenkar slenkar October 2013 Development
  • Renegade Hit Squad Re-releaseI've found a problem with TZX included in file [url]ftp://ftp.worldofspectrum.org/pub/sinclair/games/r/Renegade(TheHitSquad).tzx.zip[/url]. The Spee…

    ... lenght is loaded by the ROM routine, so can't be a ...
    zx81 zx81 October 2013 MIA/STP/SDP
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  • can someone help with a rom routinei have been trying to draw a simple line with a the rom routine , but i just cant get it to work , so if anyone can give me an example in z80 that wo…
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  • Screen$ command, ROM routineHi All,<br /> <br /> Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works…
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