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<1…15161718192021…34>
  • Problem With POINT StatementHello everyone this is my first ever post, So firstly i'd like to say hello to everyone and secondly thank you to the admins for such a great site, …

    ... .co.uk/~jg27paw4/pourri/a000tempest.z80[/url]
    [/center]

    799 REM Set Up Movement Table
    800 GO SUB 998 ...
    Battle Bunny Battle Bunny September 2013 Sinclair Basic
  • 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…

    ... /> [quote]
    as: unrecognized option '-z80'
    [/quote]

    ... package manager this is binutils z80 stuff.... ok install it ... />
    [code]
    as -z80 test...
    [/code]

    table.

    [IMG] ...
    wibble wibble September 2013 Development
  • MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …

    ... .co.uk/~jg27paw4/pourri/move_m.z80]here[/url] which shows some ... detection, so that the ACTION table defines allowed locations, and slightly ...
    Battle Bunny Battle Bunny September 2013 Sinclair Basic
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    [code]; --- THE PSG and LOUDSPEAKER ROUTINES ----------------------------------------

    ; THE 'SOUND' COMMAND
    org 0x0374
    sound_4:
    rst next_char ; advance pointer

    org 0x0375
    sound:
    call expt_2num ...
    chev chev October 2013 Development
  • Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …

    ... the boundaries of the hookcode table is approved then, assumed that ... I want to save a .Z80 file one day, but for ... possible combinations, the usual truth table. There however is a theory ...
    roko roko October 2013 Hardware
  • 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…

    ... to im2 service routine (im2 table filled with 0xd1 bytes)
    table (257 bytes)
    61 ; ce00 - cfff ------- z80 stack (512 ... 0xffff. I placed an im2 table at 0xd000 below that and ... the gap between the im2 table and the sp1 variables. And ...
    Alcoholics Anonymous Alcoholics Anonymous October 2013 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…

    ... ]

    * Im2_Init() puts the z80 in im2 mode and loads ... /> * memset() creates a 257-byte table of 0xd4 bytes at address ... 0xd300. This means the z80 will jump to address 0xd4d4 ... interrupt.
    * bpoke() pokes a z80 JP instruction at the ISR ...
    Alcoholics Anonymous Alcoholics Anonymous October 2013 Development
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... executed that doesn't require table lookup.

    The ... tools which are not producing z80 libraries in the same ... You can always generate the z80 libraries on your local install ... by compiling the z80 source. Windows always presents a ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…

    ... -demo

    cd ~/dev/Z80\ src/z88dk-zxspectrum/NIRVANAENGINE_z88dkInterface/
    # create assembly listing with symbol table

    if [ -f NIRVANA ...
    dbolli dbolli November 2013 Brand new software
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... memset() fills the table with $d4 bytes. The z80 will grab two ... bytes from this table to form ... to. The entire table is $d4 so the z80 will jump to ... $d1 bytes into the im2 table, the z80 will go to $d1d1 ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • CMWC random number generator for Z80Seeing the interest regarding the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=23070"]Xor-Shift random number generator for Z80[/URL]…

    ... I have to initialize the table with bytes that satisfy this ... />
    Do you have something z80 at hand for generating 15 ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…

    ... creator, but the vector table is created where code ... ]

    The table has to be located at ... hex digits = 00. The table size is 257 bytes. ... .

    The table itself contains all the same ... z80 will jump to address x*256+x on interrupt. The table ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • 128k gamesHi. I've come to World of Spectrum for advice. I'm a Commodore guy OK, please be nice to me, as I seek your wisdom! I love the Commodore 128, and I'…

    ... data map or look-up table to save time interpolating or ... the extra registers of the Z80 (or the zero-page addresses ...
    joefish joefish January 2014 Games
  • Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…

    ... [*]Assembler-vb.bas, Assembler-vb.z80 : the main program
    ... [*]Assembler-vbDATA.bas, Assembler-vbDATA.z80 : the setup program
    ... /> [*]Assembler-vbGO.bas, Assembler.z80 : the original program - the ... speed improvement the main table would have to be ...
    Battle Bunny Battle Bunny January 2014 Sinclair Basic
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... ) accommodated by a simple lookup table, but I don't know ... work with very timing specific z80 code for the beeper on ...
    Timmy Timmy January 2014 Announcements
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    [url]http://z80-heaven.wikidot.com/instructions-set[/url]
    [url]http://clrhome.org/table/[/url]

    and begin to think hexadecimally :-P
    Pavero Pavero January 2014 Development
  • Opus Discovery 1I guess this has been asked before, I have an opus discvery 1, it seems to be working but I would like to fit 2 double sided 3.5" 80 track drives, oh…

    ... hardware limitations other than the Z80 not running fast enough for ... disks is held in a table residing in the new RAM ... .
    The table is built up on cold ... is making changes in the table in RAM and then FORMAT ...
    roko roko January 2014 Hardware
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... bit * 8 bit is four table lookups, and add the results ... , etc.

    Yes, the table runs to a page
    table may be faster than the ... can be done on the z80 in registers (with the help ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • z80 less than and greater thanI am writing a keyboard routine where the pressed key code number is held in A. I only want to action the number key presses 1 to 9 (codes 49-57) so …

    I always find this table from an ancient Z80 reference card helpful when ...
    GReW GReW February 2014 Development
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... operands are quite neglible.
    Table based 8x8 would speed up ... /z88dk/z88dk/libsrc/_DEVELOPMENT/l/z80/imath/fast/[/url]

    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... was returning crap to the Z80 were exactly as you describe ... start of the jump vector table.
    The_Bert The_Bert February 2014 Hardware
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... helpful for those new to z80 (me);

    Who can ... x 16 sprite from a table of colours ie

    Atari_Jetman Atari_Jetman March 2014 Development
  • Questions about Vortex Tracker II exported songsHi, I have been experimenting with Vortex Tracker II lately and have a couple of questions. By exporting the song to TAP format, a file is generated…

    ... note that my knowledge of Z80 MC is very limited and ... ://www.z80.info/zip/z80-interrupts.pdf"]http://www.z80.info/zip/z80-interrupts ... [/URL]
    [URL="http://www.z80.info/interrup2.htm"]http://www ... 27810 ;init music
    ; make table #fd (257 items) on #fe00 ...
    Jerri Jerri March 2014 Development
  • THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…

    ... />
    there is a list / table of the rooms = gfx somewhere ... guess?.. I don't do z80.. all later versions are based ...
    fog fog March 2014 Games
  • New bicolour game coming very soon.And they say budget software houses can't afford to advertise :-D [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/elstompo_advertsmall_…

    ... "in the middle" of a Z80 instruction. It must finish executing ... executing the next one). Certain Z80 instructions take more than 20 ... ]

    And the following table "deltas":

    [CODE]deltas ...
    Einar Saukas Einar Saukas April 2014 Games
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    ... /> ; first setup the lookup table
    call generate_screen_table
    ... next line in the lookup table
    djnz line_loop ; ... Ed (Z80 Asm Editor)
    ;
    ; Create lookup table for ... that address into the lookup table...
    ;

    ...
    polomint polomint April 2014 Development
  • Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…

    ... your port of BBC Basic (Z80) to use it. :)[/QUOTE]BBC ... /> On startup, the default channel table is copied from the ZX ... " channel in the default channel table goes to. The stream and ... channel table are not thereafter modified, other ...
    Jonathan Harston Jonathan Harston May 2014 Sinclair Miscellaneous
  • Excel sprite creatorMaybe no use to anyone but I knocked up the attached to help me make simple 16x16 sprites. Only supports the standard 8 colours no bright or flash s…

    ... />
    Needed an large offset table for working out the top ... used it to test some z80 code to multiply a number ...
    richdotward richdotward June 2014 Development
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