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  • Help needed with a loop counterVariable W counts to 12 then calls a subroutine to move a character, it then resets to zero and starts again. For every 2 moves of that character I …

    ... I want to call another routine, but dont want to faff ... now want to call another routine the frequency based on the ...
    daveysludge daveysludge February 2012 Sinclair Basic
  • LZ77 en/decodingI've written an LZ77 en/decoding routine as I couldn't find one around for the Spectrum. Initially I'm just doing it in BASIC to get the logic right.…

    ... written an LZ77 en/decoding routine as I couldn't find ...
    Battle Bunny Battle Bunny March 2012 Development
  • A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…

    ... if it provided instead a routine to directly print tiles on ... , and AFAIK gasman invented the routine to render 18 multicolor columns ...
    Einar Saukas Einar Saukas March 2012 Brand new software
  • The Sinclair ZX Microdrive Resurrection Project (long)Dear Spectrum fans! [Management summary: Download [url]http://www.bartheld.net/temp/mdv2img.zip[/url] and tell me what you think. All help very much…

    ... building a Speccy-to-PC RS232 cable were very instructive and ... /the cartridge to PC via RS232.

    That's where ... *"b" CODE 32768,xxxx via RS232) and it was uploaded to ... the PC side, activated (RAW) RS232 logging (a bit tweaking of ...
    Volker Volker March 2012 Emulators
  • Interview with VERONIKA MEGLER ("The Hobbit" programmer)This interview with Veronika Megler (The Hobbit) has been published by elmundodelspectrum.com in Spanish, I copy it here for you all in its original …

    ... ?d call Phil?s graphics routine and his code would draw ...
    jmvbok jmvbok March 2012 Games
  • How to join PC to ZX Spectrum via IF1?[LIST] [LIST] [/LIST][/LIST]Hello All, I've failed miserably :-? at getting even a hint that the Spectrum and PC I have connected together are indee…

    ... ;source=search"]Lindy USB -> RS232 cable[/URL]
    [*]Windows 7 ...
    Korinel Korinel March 2012 Sinclair Miscellaneous
  • Interface I and the "net" LANRegarding Chapter 7: [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/books/MicrodriveAndInterface1Manual.pdf"]IF1 Manual[/URL] With Interface 1 mos…

    ... to another machine via the RS232, but given the lack of ...
    Korinel Korinel March 2012 Sinclair Miscellaneous
  • Model Railway Timetable Version 1.4.12.0313...Hi Folks, Since November 2010 I have been working on my [B]Model Railway Timetable [/B]software. Thanks to the considerable help and patience of yo…

    ... WOS:

    * Proportional print routine (Tony Samuels)
    * Memory move ... routine (Battle Bunny)
    * New random ...
    Paddy Coleman Paddy Coleman March 2012 Sinclair Basic
  • Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …

    I was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most imaginative thing I could come up with, wiping each character from the right:

    [CODE]
    ...
    Morkin Morkin March 2012 Development
  • Scrimpy screensHere's a question - how small a window can you get away with as a playing area for an arcade/action game before anyone notices? From the very earlie…

    ... rough edges of the scrolling routine:
    [IMG]http://www.worldofspectrum ...
    joefish joefish March 2012 Development
  • 3D Wireframe/vector animation creator and player?Is there any software that can help record wireframe 3D animations by creating a file that stores just the coordinates and lines? If the answer is "n…

    ... .

    2-Have a routine that can play all frames ...
    zxbruno zxbruno March 2012 Development
  • countdown timer ?just curious if there was a pre-made one about that I could use to count down from 999 to 0. in MC / under interrupt, that returns to basic? but how…

    ... , will I just have a routine running ?

    .. use IN ...
    fog fog April 2012 Sinclair Basic
  • Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …

    ... written by the RAM-FILL routine). Because the second DEC (HL ... to capture the RAM-FILL routine passing from lower RAM to ... a little machine language test routine and perhaps that would have ...
    Zorn Zorn April 2012 Hardware
  • Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code: [CODE] ;; ram-check L11DA: LD H,D ; Transfer the top value to the HL register LD L,E …

    ... />
    And here a faster routine:

    [CODE]
    ;; ram ...
    antoniovillena antoniovillena April 2012 Development
  • Help pleeease "Proving Emulator OpCode flags are correct"So I had a cunning plan... I wanted to write a test harness for Emulators that could "prove" that all opcode flags were correct. I wanted something m…

    ... accept the output from the RS232...
    Wrote a spectrum program ... any Emulator that support IF1 RS232 (e.g. to a named ...
    Korinel Korinel April 2012 Emulators
  • INPUT LINE and STOP in INPUTWhat was the reason for the ROM Editor routine causing "down arrow" while in an INPUT LINE to cause the "H STOP in INPUT" error report? Why doesn't i…

    ... reason for the ROM Editor routine causing "down arrow" while in ...
    Battle Bunny Battle Bunny April 2012 Sinclair Basic
  • Deathchase improvementsI have spent the last couple of months bringing out an "enhanced" version of Deathchase which I called "Deathchase 2012". Unfortunately because it us…

    ... /> [*]Fog
    A custom display routine is used to show a ...
    Jimmy Jimmy April 2012 New game ideas
  • New Game: THE LOST TAPES OF ALBIONOkay here's my present for the Speccies 30th birthday: [B] [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=^Lost+Tapes+of+Albion%2c+The$&pu…

    ... my programming, the better sprite routine should be noticable.

    R-Tape R-Tape April 2012 Brand new software
  • simplest method to pass a string to m/code?The statement "RANDOMIZE numvar+USR mc" is a simple way of passing a single numeric parameter to a m/c routine, as mc can retrieve numvar from the to…

    ... parameter to a m/c routine, as mc can retrieve numvar ...
    Battle Bunny Battle Bunny April 2012 Sinclair Basic
  • Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …

    ... an interrupt mode 2 service routine and uses POP and PUSH ... the buffered display and the routine will
    automatically sort it ... a) it's just a routine, not even as developed as ...
    chev chev April 2012 Development
  • ZX Spectrum ULA core available at OpenCoresHi! On April, 23th, I opened a new project at the OpenCores website: [url]http://opencores.org/project,zx_ula,Overview[/url] Right now, it has a, h…

    ... level shifter, connected to the RS232 pins, is used as EAR ...
    mcleod_ideafix mcleod_ideafix April 2012 Hardware
  • Screen2StringFurther to writing that BASIC one-liner to redirect CAT to a string I thought that I'd do a general redirection routine for anything which normally p…

    ... 'd do a general redirection routine for anything which normally prints ... so=standard channel 'S' output routine address; ro=redirected address
    Battle Bunny Battle Bunny May 2012 Sinclair Basic
  • Store and restore attribute valuesI am needing ideas on how to write a machine code routine that will store/restore (more important to restore) attribute values to the 22528 area. I …

    ... to write a machine code routine that will store/restore (more ...
    daveysludge daveysludge May 2012 Development
  • Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…

    ... with a wee machine code routine. I have written the following ...
    Paddy Coleman Paddy Coleman May 2012 Development
  • Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…

    ... please give me an assembler routine that would do this? I ...
    zxbruno zxbruno May 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…

    ... .

    call 3503 ; ROM routine - clears screen, opens chan 2 ... 's gunbase position,
    ; this routine is called prior to display ...
    Saboteur Saboteur May 2012 Development
  • Sound designer wantedAs you may or may not be aware, in a complete IP violation, and written up as a HOW-TO tutorial, I'm writing a pac-man clone. But I'm crap with soun…

    ... bursts)
    A machine code routine
    I could include beepola ...
    Gedlion Gedlion May 2012 Development
  • Goody - another game that was supposed to be colourAfter the success with Outrun Europa ([url]http://www.worldofspectrum.org/forums/showthread.php?t=39143[/url]) I decided to search for more games tha…

    ... , sprites have their own colour routine! Some ugly colour clash however ...
    Ralf Ralf May 2012 Games
  • yeah x 0.0.2first: [URL="http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz"]the goods are at - http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz[/URL] aft…

    ... compiled & debugged]
    - if1 rs232 device driver (115.200 baud ... chunks per timer tick) [experimental rs232 115.200 code is included ... read),
    - file system (via rs232 or microdrive device driver),
    tstih tstih May 2012 Development
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routine 9.5K 14.8K

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