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  • WOS ChatlogsGood for a read this one, [url]http://www.worldofspectrum.org/chatlogs/technical.log.1.txt[/url]

    [QUOTE=jp]Oops, I've been caught ...
    Skarpo Skarpo July 2006 Chit chat
  • ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…

    ... : xor (hl)
    cpi
    jp pe,LOOP

    Of ...
    baze baze July 2006 Emulators
  • Extended Microdrive FormatterHello all, After a few months on a steep learning curve, some heavy duty reading and plenty of trial and error I?ve written an extended microdrive f…

    [QUOTE=jp]1. Relocatable
    [CODE]LOAD *" ...
    Jonathan Harston Jonathan Harston July 2006 Development
  • Steve Davis Snooker 128k?I'm in the middle of an, erm, interesting discussion with a bloke on AtariAge. The long and the short of it is he's claiming to have written a 128k …

    [QUOTE=jp]Hmm. Unless the target audience ...
    psj3809 psj3809 August 2006 Games
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ... change the jr's to jp for more speed, less space ...
    Kiwi Kiwi August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ... unrolled couple of times
    jp nz,Loop
    [/CODE]
    baze baze August 2006 Development
  • crack down(us gold)hello when i was trying to map this game,i got to the end of level 14,the emulator(spectaculator 6.25)tried to load but just did nothing.i checked t…

    ... corrupt level at 15, as Alkatraz doesn't have checksums,
    Andrew Barker Andrew Barker August 2006 MIA/STP/SDP
  • crack down(us gold)hello when i was trying to map this game,i got to the end of level 14,the emulator(spectaculator 6.25)tried to load but just did nothing.i checked t…

    ... restarted the level, although with Alkatraz it probably results in a ... good. Always a worry with Alkatraz.. doesn't have checksums, only ...
    Andrew Barker Andrew Barker August 2006 MIA/STP/SDP
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... like Coin-Op Hits and Alkatraz/Hexagon/Speedlocks (weak sectors, > ...
    Andrew Barker Andrew Barker August 2006 Emulators
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... like Coin-Op Hits and Alkatraz/Hexagon/Speedlocks (weak sectors, > ...
    Woody Woody August 2006 Emulators
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ...
    ld c, a
    jp nc, loop_label2
    [/code]
    Fikee Fikee August 2006 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…

    ...

    dec c
    jp nz, scanloop
    ret

    dec c
    jp nz, scanloop

    ld ...
    Alcoholics Anonymous Alcoholics Anonymous August 2006 Development
  • Screen LoaderCouple days ago i find very interesting loader routine in ex Yugoslavia magazine "Svet Kompjutera" from january 1987. Authors of article, calls this …

    ... /> scf
    call 1366
    jp start

    [/code]
    Dr BEEP Dr BEEP August 2006 Games
  • Not for the faint hearted.[url=http://www.vidilife.com/video_play_754034_G4_Bohemian_Rhapsody.htm]the most offensive thing I've ever seen[/url]

    [QUOTE=jp]Slightly off topic, but Daren ...
    Daren Daren September 2006 Chit chat
  • SupadriveHere's an MDR image of Supadrive. Works with Spectaculator, but I haven't tested it with any other emulators. [url="http://www.superfudge.demon.co.u…

    [QUOTE=jp]...I was aiming for a ...
    jp jp September 2006 MIA/STP/SDP
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... /> 4 cp c
    10 jp nc,next
    4 inc ... /> 4 dec e
    10 jp nz,sort ; if not zero ...
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Sinclair Miscellaneous
  • Microdrive gamesI saw a few Spectrum games on Ebay recently which were advertised as being in the microdrive format, they even had a photo of the cartridge with a la…

    ... the forums, I'm sure JP would be thrilled to test ...
    Andrew Barker Andrew Barker September 2006 Games
  • Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…

    Also if your after speed instead of space, jp is faster than jr.
    takes an extra byte, but saves in cycles.
    Kiwi Kiwi September 2006 Development
  • Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…

    ... after speed instead of space, jp is faster than jr.
    JP - Branch taken = not taken = 10tstates.
    bobs bobs September 2006 Development
  • Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…

    ... ; subtract new x coord
    jp m, outrange ; if difference > ... ,af
    dec a
    jp nz, particleloop
    ret
    ld (ix+0),0
    jp skipparticle


    get_screen_addr_and_draw ...
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Development
  • License plateWhat's wrong with the car with this dutch license plate 89-46-ZX It is an OPEL COMMODORE! Anyone found other Spectrum / Z80 based plates? We had a…

    [QUOTE=jp]Sorry can't offer any ...
    jp jp September 2006 Chit chat
  • License plateWhat's wrong with the car with this dutch license plate 89-46-ZX It is an OPEL COMMODORE! Anyone found other Spectrum / Z80 based plates? We had a…

    [QUOTE=jp]Sorry can't offer any ...
    Skarpo Skarpo September 2006 Chit chat
  • MDR File formatFor reading (and writing) MDR-files into my ZX-PC Interface I need the layout of a MDR-file. Googling with MDR FILEFORMAT etc.. doesn't seem to help,…

    [QUOTE=jp]It *does* sound interesting... what' ...
    Dr BEEP Dr BEEP October 2006 Development
  • Steve Davis Snooker 128k?I'm in the middle of an, erm, interesting discussion with a bloke on AtariAge. The long and the short of it is he's claiming to have written a 128k …

    [QUOTE=jp]Bump.

    Would hate ...
    Vampyre Vampyre October 2006 Games
  • What are the first 10 songs on your Mp3/ ipod thingy?I was that it gave alot away about the person? This Is the 21st Century - Marillion Light Up Your Eyes i,ii) - Pineapple Thief Halleluhwah - Ca…

    [QUOTE=jp]A quick shuffle produces :-
    < ... mo'[/QUOTE]

    that, JP, is a good list.
    Bluce_Ree Bluce_Ree October 2006 Chit chat
  • What are the first 10 songs on your Mp3/ ipod thingy?I was that it gave alot away about the person? This Is the 21st Century - Marillion Light Up Your Eyes i,ii) - Pineapple Thief Halleluhwah - Ca…

    [QUOTE=Bluce_Ree]that, JP, is a good list.
    < ...
    jp jp October 2006 Chit chat
  • What are the first 10 songs on your Mp3/ ipod thingy?I was that it gave alot away about the person? This Is the 21st Century - Marillion Light Up Your Eyes i,ii) - Pineapple Thief Halleluhwah - Ca…

    jp,

    i dont know ...
    Bluce_Ree Bluce_Ree October 2006 Chit chat
  • Not so BRIGHTOk, on the Spectrum I'm a crayon man so I don't know much about the coding. If I create a graphic in, say, SevenUp or TommyGun and the graphic is not…

    ... loop
    dec c
    jp nz,loop
    ret[/FONT ... on each loop, and using jp saves 2 states when jump ...
    Metalbrain Metalbrain October 2006 Development
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