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<1234567…34>
  • [Asm] Is this nested loop faster than LDIR or a bunch of unrolled LDI's?Hi all. I'm learning Z80 asm on Speccy 48K, and to start with I decided to write my own "CLS" routine (without relying on ROM calls or LDIR) as a lea…

    ... own "CLS" routine (without relying on ROM calls or LDIR) ... 5B00 (23296) if no ROM calls or BASIC required, ... Change border color. Alternative: call $229B/8859 (Spectrum ROM function ... to change border color).
    ; ROM CLS = call ...
    ST1 ST1 November 2018 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... 10 - A solid fill routine that is optimised when plotting ... 11 - A slow sprite routine, that is; to display ... br /> 14 - A set border routine
    [B]LD A, ... 17 - A line draw routine, optimised when drawing one pixel ... it. There are ROM routines as well[/B ...
    Ralf Ralf October 2010 Development
  • Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…

    ... ROM at non-standard entry points. This address is inside the BORDER routine ...
    ;TEMPS is the standard ROM routine at 3405
    LD A ... standard 'print char in A' routine
    LD HL, 0 ; ... 242 248
    ;BEEP is ROM routine at 1016
    CALL BEEP ...
    Jimmy Jimmy May 2011 Development
  • Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…

    ... ;--------------------------------------------------------------
    ; BORDER AND SPEAKER HANDLING
    ROM:0489 exx
    ROM:048A ld ... discard return value for this routine
    ROM:0536 xor h ;clears ...
    mcleod_ideafix mcleod_ideafix August 2011 Hardware
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... easy as the humble BORDER routine. But yea you are ... cheating and using a ROM routine... but I am but ... could write a better print routine lol.

    ... br />
    Whats the ROM magic?

    Time ... to look up the Rom Dissasembly book.. (very nice ...
    wibble wibble September 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... a tutorial about converting ordinary ROM-loader files into 47- ... that takes a standard ROM loader file and spits ... programmer!)

    The border stripes are done as "themes ... different numbers into the "border" routine to give different colours during ...
    stephenw32768 stephenw32768 September 2013 Development
  • assembler for PcHi guys, I'm in the process of teaching myself machine code, and wondered if there is a good pc program for writing code. Or is the best thing to use…

    ... /> To set a permanent red border we can do this:
    border colour.

    so this is calling a rom routine right ... address of 229B but the rom routine starts at 2294 doesn't ... only calling part of the rom's border routine?

    Sorry for ...
    Lost Lost December 2014 Development
  • assembler for PcHi guys, I'm in the process of teaching myself machine code, and wondered if there is a good pc program for writing code. Or is the best thing to use…

    ... only calling part of the rom's border routine?
    [/QUOTE]
    That's it exactly.

    The ROM ... official' start of the routine is involved with retrieving ... BORDER 162) and then calling the error-report routine ...
    GReW GReW December 2014 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... /> 07 - A fast clear screen routine using the stack if possible ... generator
    14 - A set border routine
    15 - A set of ...
    17 - A line draw routine, optimised when drawing one pixel ... - A fast screen address lookup routine, that is; pixels to display ...
    ASM ASM October 2010 Development
  • BackgroundDoes anyone know how i would create a background similar to [URL=http://imageshack.us/photo/my-images/42/backgroundmockup.png/][IMG]http://img42.ima…

    ... ?t see anything in the border...[/QUOTE]

    Here ... ,loop2 ;repeat 'a' times
    ;;;BORDER ROUTINE
    loop3 ld a,4 ... br /> out (254),a ;green border
    halt ;intricate beam tracking ... br /> out (254),a ;black border
    halt
    jr loop3 ...
    R-Tape R-Tape December 2011 Development
  • BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…

    ... thread.
    3. Added "Exit border routine on keypress" option that returns ... more easily see where the border stops and the paper starts ... few bytes off the display routine.
    8. Spelt Palette correctly ...
    ccowley ccowley April 2012 Announcements
  • BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…

    ... at
    3. Added "Exit border routine on keypress" option that returns ...
    Yerzmyey Yerzmyey April 2012 Announcements
  • Known Z80 M1 problems?I got an email yesterday from someone asking for a Z80 without the M1 problem. I only know about the fanout problem that many Z80's are suffering of…

    ... was plugged in (a test routine rom cart perhaps?) one of their ...
    guesser guesser June 2012 Hardware
  • Harlequin Rev GI have just got all the bits to build an Harlequin Rev G system and I went for a red solder mask board. I have fitted the 3 surface mount components…

    The picture of the Test ROM is indicating that it cannot ... eight red stripes in the border, the ROM and the CPU must ...
    1024MAK 1024MAK March 2016 Hardware
  • Harlequin Rev GI have just got all the bits to build an Harlequin Rev G system and I went for a red solder mask board. I have fitted the 3 surface mount components…

    ... "]The picture of the Test ROM is indicating that it cannot ... eight red stripes in the border, the ROM and the CPU must ...
    caver99 caver99 March 2016 Hardware
  • 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…

    ... OUT (FE),A ; Set MIC/Border (ROM)
    0xEAE6 LD HL,053F ... /> 0xEAEF OR 02 ; Set Red border (ROM)
    0xEAF1 LD C,A ...
    lfaria lfaria August 2016 MIA/STP/SDP
  • 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…

    ... br /> 0x5B12 CP 3A ; Is ':' ? (ROM)
    0x5B14 JR Z,5B00 ... of the required command class routine (ROM)
    0x5B54 PUSH HL ; ... the command class (ROM)
    0x5B57 RET ; routine pass the command code ...
    lfaria lfaria August 2016 MIA/STP/SDP
  • 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
  • Silent ROM Beeper Routine in SpinA new year -- a new idiot question! :) I've been playing around with Spectrum sounds of the old, beepy kind. When I wiggle[1] the speaker 'by hand' …

    ... the Specrum's own ROM 'BEEPER' routine (48k ROM) in Spin 0.666 ...
    RoseCotton RoseCotton January 2010 Development
  • General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …

    ... I have written an XINPUT routine for the Spectrum (in BASIC ... the program is the XINPUT routine plus a test harness that ... br /> 9010 REM PSS-XINPUT Routine
    9020 REM Parameters:
    RANDOMIZE USR 3438: REM ROM CLS-LOWER
    9270 LET ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • 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
  • 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…

    ... 3C06 = 15366 dez = DOS / ROM ON
    ;TR-DOS v4 ... LD C,0 ;Set DOS Routine 0 (INIT/RESET DOS)< ... compare the Bytes from ROM-Files, it seems with ... copies the standard Spectrum 48k ROM to adress 40000
    ROM (because it´s not ...
    Luzie Luzie December 2015 Hardware
<1234567…34>

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HitBox

Word Docs Hits
border 5.2K 8.7K
routine 9.5K 14.8K
rom 15.6K 29.7K

Related Threads

  • Competition: Sadistick routine on Spectrum ROMMy vote goes to BEEPER at #03B5<br /> Let's ear you pick! :)<br /> <br /> And a great BOHHHHHHHHHHHHH to Dr Ian Logan &amp; Dr Frank O'Hara for their…
  • 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…
  • Silent ROM Beeper Routine in SpinA new year -- a new idiot question! :)<br /> <br /> I've been playing around with Spectrum sounds of the old, beepy kind. When I wiggle[1] the speake…
  • 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…
  • 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…
  • Searching for correct Betadisk 48k TR-DOS v4.12 ROM (Save ROM via TRDOS-Prompt to Disk)Hi,<br /> <br /> I have two ROM-Files which should be read out from an original Betadisk 48 Interface TRDOS v4.12 (ROM-Size 8k).<br /> But when I …
  • Rom routine for pixel addressDear all,<br /> <br /> Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine…
  • 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.<br /> <br /> It´s working on TR-DOS v4 / Betadi…
  • I don't think I'm getting the $22AA Pixel-Add rom routineDear all,<br /> <br /> I'm misunderstanding how the PIXEL-ADD rom routine works.<br /> <br /> My code...<br /> [code]ld b,175<br /> ld c,1<br /…

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