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<1234567…34>
  • Cobra (improved again BUGFIX)This is an improved BUGFIX for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000996"]Cobra[/URL], that works better than the fix curre…

    ... org $9490 ; 38032
    jp $aef0 ; 195 240 174 < ... ; 254 7
    jp z,$9566 ; 202 102 149 ...
    jp $956a ; 195 106 149 ... edited TAP image) and jp (Alkatraz loader patch for the ...
    Einar Saukas Einar Saukas July 2013 Infoseek database
  • Cobra (improved BUGFIX)This is an improved BUGFIX for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000996"]Cobra[/URL], please replace the "known errors" de…

    ... Saukas (edited TAP image) and jp (Alkatraz loader patch for the original ...
    Einar Saukas Einar Saukas July 2011 Infoseek database
  • DEC BC/LD A,B/OR C/JP NZ,loopyesterday i saw nice trick:[code] dec bc ld a, b or c jp nz, loop can be replaced (bc starts >255, short jump) by: dec bc inc b djnz loop [/code] …

    yesterday i saw nice trick:[code]

    dec bc
    ld a, b
    or c
    jp nz, loop

    can be replaced (bc starts >255, short jump) by:

    dec bc
    inc b
    djnz loop
    [/code]
    ..nice
    Fikee Fikee February 2005 Development
  • Alkatraz questionsAnyone know: 1] Before the turbo data block every Alkatraz game does this a few times: ((Out to 3F,Out to 7F) x2) In from 9F What is it doing? 2]…

    ... the turbo data block every Alkatraz game does this a few ...
    PrinceClumsy PrinceClumsy February 2006 Emulators
  • AlkatrazHello. I?ve always thought that the loading sistem Alkatraz is very interesting. So, I?ve developed something similar, only with the screen loader. …

    ... thought that the loading sistem Alkatraz is very interesting.
    So ... ]https://rapidshare.com/files/3270802376/ALKATRAZ.rar[/url]
    climacus climacus November 2011 Development
  • Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…

    ... recently became interested in the Alkatraz protection system, a very widely ... get some info from some Alkatraz 2 protected tapes, but it ... .

    Coming back to Alkatraz (the original), the main blocks ...
    lfaria lfaria December 2011 MIA/STP/SDP
  • Alkatraz Development Cartridges (missing authors, v.no, AKA, company name)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Development Cartridges[/URL] * Authors: James Wood, Antony Dunmore, John Ba…

    ... .org/infoseekid.cgi?id=0020807"]Alkatraz Development Cartridges[/URL]

    Alkatraz Protection System[/I].

    ZnorXman ZnorXman December 2011 Infoseek database
  • Happy Birthday JP!Happy Birthday JP! (Though taking the time difference into account it may no longer be your birthday) Happy hacking all the same :smile:

    Happy Birthday JP!

    (Though taking the time difference into account it may no longer be your birthday)

    Happy hacking all the same :smile:
    R-Tape R-Tape April 2013 Chit chat
  • JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…

    ... to memory address nn.
    JP (HL) ,I assumed would ... using a list of CP...JP nn

    or ... br /> LD HL,jumptable
    JP (HL) ; read/peek the contents ... what instructions do.
    JP nn means PC=nn
    JP (HL) means PC=nn
    JP (IX) means ...
    MatGubbins MatGubbins March 2014 Development
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... .org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL]...

    Alkatraz[/URL] is a commercial utility ...
    jp jp October 2014 Announcements
  • Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…

    [QUOTE=jp;306658]There are Alkatraz mastering routines [URL="http://www. ...
    mulder mulder October 2008 Sinclair Miscellaneous
  • Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…

    [QUOTE=jp;306957]Yup, the 2.50 ... are good. Check out the "Alkatraz Utils.mdr" this seems to ...
    mulder mulder October 2008 Sinclair Miscellaneous
  • Tape and Disk breakpointsIs it possible to set a breakpoint on a .TAP, .TZX or .DSK file so that the debugger pops up when loading finishes? I'm talking about a breakpoint wi…

    ... pullout.
    Just replace the JP at the end of the ... /> It was useful for Speedlock, Alkatraz etc.
    FrankT FrankT May 2009 Emulators
  • Ocean's Cobra - +3 incompatability. Is their a fix?Hello all, Anyone know of a fix for Ocean software 'Cobra' (the one with stallone in it) ? This was the first game I bought for my 128k toastrack, a…

    [QUOTE=jp;491196]Hiya - my apologies, it' ... - Smash Tips] Your Sinclair - Cobra [Alkatraz] mega POKE will never, ever ...
    MrCheese MrCheese November 2010 Games
  • Ocean's Cobra - +3 incompatability. Is their a fix?Hello all, Anyone know of a fix for Ocean software 'Cobra' (the one with stallone in it) ? This was the first game I bought for my 128k toastrack, a…

    [QUOTE=jp;491196]Hiya - my apologies, it' ... - Smash Tips] Your Sinclair - Cobra [Alkatraz] mega POKE will never, ever ...
    StuBruise StuBruise November 2010 Games
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    [QUOTE=jp;505243]To get the following ... both +3 disk format and Alkatraz tape format.
    I'm ...
    jp jp January 2011 Games
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    [QUOTE=jp;506929]It's just occurred ... both +3 disk format and Alkatraz tape format.
    I'm ...
    spider spider January 2011 Games
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    ... have a look at the Alkatraz tape loader of the Alien ... 31 ff 62 $0ats
    jp $6300 ; 5b29 c3 00 63 ... 31 fc 62 $0ats
    jp $6300 ; f3b0 c3 00 63 ...
    jp jp January 2011 Games
  • Speedlock builderI've seen the Alcatraz dev cartridges although I could not figure out how to use them, only knowing a tiny bit of Z80 probably did not help, but I ca…

    ... .org/infoseekid.cgi?id=0020807"]Alkatraz Development Cartridges[/URL] , oh ... 22323"]look[/URL] at the Alkatraz Development Cartridges in the past ... the post:

    [QUOTE=jp;306957]Yup, the 2.50 ... are good. Check out the "Alkatraz Utils.mdr" this seems to ...
    jp jp March 2011 Sinclair Miscellaneous
  • Ultimate Collected Works, no Underwulde, why?I managed to get my grubby paws on the "Ultimate Play The Game" "The Collected Works" off E-bay.... The set has 1. JetPac 2. Pssst 3. Tranz-AM 4. Co…

    [QUOTE=jp;602019]Both Knight Lore and ... =82"]remastered[/URL] with an Alkatraz loader that locks/disables any ...
    Korinel Korinel February 2012 Games
  • Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…

    [QUOTE=jp;711860]OK, never mind! The ... !

    There are 2 Alkatraz releases: "Cobra.tzx.zip" and ...
    Einar Saukas Einar Saukas July 2013 Infoseek database
  • Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…

    [QUOTE=jp;712006]...I've neglected to ... source code for this updated [Alkatraz] patch, so I'll look ...
    jp jp July 2013 Infoseek database
  • Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…

    ... going to be best pleased jp but there is another problem ... it... after I finish that Alkatraz disassembly - there seems to be ...
    jp jp July 2013 Infoseek database
  • DONKEY KONG loading screenHello again, I was never keen on the original DONKEY KONG loading screen so, thought I'd have a go at trying one, here is my effort! [IMG]https://d…

    [QUOTE=BiNMaN;754762]Hope jp splices this into the original[/ ... bit of fun with the Alkatraz screen designer...

    [youtube ...
    jp jp March 2014 Games
  • DONKEY KONG loading screenHello again, I was never keen on the original DONKEY KONG loading screen so, thought I'd have a go at trying one, here is my effort! [IMG]https://d…

    [QUOTE=jp;756039]I'd love to ... bit of fun with the Alkatraz screen designer...

    [youtube ...
    mickfarrow mickfarrow March 2014 Games
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    [QUOTE=jp;799096][B]The Alkatraz Protection System[/B]

    [B]Teaser![/B]
    [youtube]rdt1KEC2IZ0[/youtube][/QUOTE]

    ooooooooh

    :D
    BiNMaN BiNMaN October 2014 Announcements
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    jp, thank you for explaining how complicated it was back in the day and how easy you make it look putting together just one Alkatraz loading screen for a game. It's great to watch these videos.
    I see there's a lot more to follow.....
    MatGubbins MatGubbins November 2014 Announcements
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    [QUOTE=MatGubbins;800164]jp, thank you for explaining how ... look putting together just one Alkatraz loading screen for a game ...
    jp jp November 2014 Announcements
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... html#alkatrazz"]hacking Alkatraz[/URL].

    [B]Alkatraz Encryption[/B]
    For the main loader Alkatraz provides 31 encryption "units" and ... 2 BYTE XOR
    24: JP EX XR R
    25 ... , we'll boot the Alkatraz utility cartridge and select Protect ...
    jp jp November 2014 Announcements
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... , ($0010)
    cp $c3
    jp z, $0000
    ld a ... next[/B]
    The mysterious Alkatraz BASIC...
    jp jp November 2014 Announcements
<1234567…34>

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  • DEC BC/LD A,B/OR C/JP NZ,loopyesterday i saw nice trick:[code]<br /> <br /> dec bc<br /> ld a, b<br /> or c<br /> jp nz, loop<br /> <br /> can be replaced (bc starts &gt;255, sho…
  • Alkatraz questionsAnyone know:<br /> <br /> 1] Before the turbo data block every Alkatraz game does this a few times:<br /> <br /> ((Out to 3F,Out to 7F) x2) In from 9…
  • happy birthday jpyup<br /> <br /> happy birthday
  • Happy Burfday jp!Happy Burfday!<br /> <br /> Drink Beer (your avatar implies you may already be ;))<br /> <br /> Have a Gudden!
  • Happy Birthday JPHave a pleasing old time.
  • AlkatrazHello.<br /> <br /> I?ve always thought that the loading sistem Alkatraz is very interesting.<br /> So, I?ve developed something similar, only with t…
  • Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…
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