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<1…15161718192021…34>
  • a bit of coding helphi all over the past few weeks i have been busy getting to grips with recracking tr-dos stuff for the plus-d and was after a little bit of help what…

    ... ,h
    or l
    jr z,aloop2
    sbc hl,de ...
    jr nz,aloop1
    aloop2 ld ... /> ld h,(ix-1)
    jp (hl)
    ;
    atable dw ...
    djgarf djgarf October 2011 Development
  • Need help with tzxingI recently got a copy of this Polish text game: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006622[/url] I can't make a tzx of it howeve…

    ... DEC A ; C195 3D
    JR NZ, L_C195 ; C196 20 FD ... $20 ; C1A2 E6 20
    JR Z, L_C199 ; C1A4 28 F3
    JR L_C195 ; C1F0 18 A3
    L_C1F2: JP NC, $0000 ...
    Battle Bunny Battle Bunny October 2011 MIA/STP/SDP
  • Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…

    ... /> CALL L61715
    JR Z,L61505
    LD ( ... OR C
    JR Z,L61555
    LD A ... OR A
    JR Z,L61555
    DEC ... LD (INSERT2),A
    JP START

    ...
    kgmcneil kgmcneil October 2011 Development
  • AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…

    ...
    cp $22
    jr z,NEXTQ1
    ld bc,15 ...
    cpdr ;check code
    jp nz,ERRORA ;return on error ... s
    cp $22
    jr z,NEXTQ2
    ret

    Battle Bunny Battle Bunny October 2011 Sinclair Basic
  • Krakatoa not workingI can't get any of the Krakatoa files in the archive to load on spin or zxds. Anyone else had this problem?

    ... this will be easy vs Krakatoa if you find ... 5B1D DI
    5B1E JR NC,5B41 ;Tape Loading error ... bytes loaded
    5B34 JR NC,5B3A ;All ok, ... , next attempt?
    5B38 JR 5B41 ;Tape Loading error...reset ... /> 5B3D EI
    5B3E JP C000 ;Start game
    5B41 ...
    lfaria lfaria October 2011 Games
  • BREAK from GOSUBHere's another one. Just in case you wanted to break out of multiple GOSUB levels with a single command, here's a routine to do it, tested on all mod…

    ... ;end of GOSUB stack?
    JR Z, NOGSUB
    DEC SP ;entry ... ;+2A/+3/+3e fix
    JP NZ, $1E73 ;GO_TO_2 ;return through ... ;error if not zero
    JP NZ, $1F36 ;REPORT_7 ;'n' ...
    Battle Bunny Battle Bunny December 2011 Sinclair Basic
  • Arkanoid - Hit Squad ReleaseInfoseek (and the [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/games/a/Arkanoid(TheHitSquad).tzx.zip"]TZX[/URL] itself) identifies the Hit Squad …

    ... exx ; ee6e d9
    jp $85d6 ; ee6f c3 d6 85 ... a ; ee77 3d
    jr z, l_ee98 ; ee78 28 1e
    jp $85d6 ; ee95 c3 d6 85 ... exx ; e923 d9
    jp l_fcba ; e924 c3 ba fc ... exx ; e949 d9
    jp l_fcba ; e94a c3 ba fc ...
    jp jp December 2011 Infoseek database
  • Arkanoid Hack - Your Sinclair Smash TipsRemember that Arkanoid hack in YS Smash Tips that didn't work? It does now... [CODE] 10 REM ARKANOID HACK 20 CLEAR 65535: LET C=1: LET D=23295 …

    ... arkanoid hack
    ; mailto:jp@drumfu.com
    ; december 2011 ... character set
    ;
    jp $fea9 ; and call loader< ... ; 5ba4 e6 1f
    jr z, l_5bb0 ; 5ba6 28 08 ... 5bb5 e6 1f
    jr z, l_5be9 ; 5bb7 28 30 ... e3 8b
    l_5be9: jp $84b7 ; 5be9 c3 ...
    jp jp December 2011 Development
  • Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …

    ... /> rst $18
    cp ","
    jr z,GETARG
    call FPTOBC ;BC ... ;A =number of parameters
    jp (hl) ;JP address
    [/code]
    Battle Bunny Battle Bunny December 2011 Sinclair Basic
  • Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …

    ... /> rst $18
    cp ","
    jr z,GETARG
    call FPTOBC ;BC ... ;A =number of parameters
    jp (hl) ;JP address
    [/code]
    Dunny Dunny December 2011 Sinclair Basic
  • Tool for saving prog op codes in one neat column?[deleted]

    ... CALL 2C8D
    28BA D28A1C JP NC,1C8A
    28BD ... CP 28
    28C5 2828 JR Z,+40 28EF
    [/code]
    0005 c3cb11 JP 11cb,start_new
    error_1:
    print_a_1:
    0010 c3f215 JP 15f2,print_a_2
    [/code]
    Battle Bunny Battle Bunny December 2011 Development
  • RND CommandsExactly how random are they? Reason I ask is I'm using 4 of them to generate a random number, the value of which then assigns movement commands to f…

    ... /> LD (SEED+2),HL
    JP M,RANDOM3
    LD HL ... (HL)
    INC HL
    JR Z,RANDOM2
    RANDOM3: LD HL ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • RND CommandsExactly how random are they? Reason I ask is I'm using 4 of them to generate a random number, the value of which then assigns movement commands to f…

    ... /> LD (SEED+2),HL
    JP M,RANDOM3
    LD HL ... (HL)
    INC HL
    JR Z,RANDOM2
    RANDOM3: LD HL ...
    Wookiee Wookiee January 2012 Sinclair Basic
  • Willy Meets The BeatlesHere's the almost complete release of Willy Meets The Beatles, which you can download from [URL="http://www.sendspace.com/file/55ps31"]HERE![/URL] T…

    ... tune was already stopped, Z set otherwise.
    #FEC3 ... 8604 38 03 259 419 jr c,gt1
    ... c3 fc 88 262 422 jp 88FCh ;Start game
    JR nz,R8B55
    8b42 ...
    John Elliott John Elliott January 2012 Brand new software
  • Willy Meets The BeatlesHere's the almost complete release of Willy Meets The Beatles, which you can download from [URL="http://www.sendspace.com/file/55ps31"]HERE![/URL] T…

    ... tune was already stopped, Z set otherwise.
    #FEC3 ... 8604 38 03 259 419 jr c,gt1
    ... c3 fc 88 262 422 jp 88FCh ;Start game
    JR nz,R8B55
    8b42 ...
    DaRkHoRaCe DaRkHoRaCe January 2012 Brand new software
  • 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.…

    ... a
    jr z,MATCH1 ;IF PLEN=1
    jp m,MATCH0 ;IF ...
    Einar Saukas Einar Saukas March 2012 Development
  • Increasing the number of UDGs...Hi Folks, I know by default the Spectrum can have 21 UDGs (48K) and 19 (128K) and that the address of the bit patterns is pointed to by the UDG syst…

    ... UDG256: cp "\"
    jr z,EXPAND
    cp " "
    jp nc,$09F4 ;PRINT_OUT ... 3 following characters
    jp nc,$1E08 ;"E - Out ... '
    dec a
    jr z,NOLOOP

    ex ...
    Battle Bunny Battle Bunny 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 …

    ... /> CP C ; C = 192
    JR Z, LOOP1

    ; Map DE ... , D
    OR A
    JP NZ, LOOP1
    LD A ... , E
    DEC A
    JP NZ, LOOP1

    Exit ...
    BloodBaz BloodBaz March 2012 Development
  • Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…

    ... l_lphl ;; or equivalent to call jp(hl)
    pop bc
    or l ; s == NULL?
    jr z, notoken

    have_string:
    jr c, token_toend ; if token extends ...
    Alcoholics Anonymous Alcoholics Anonymous March 2012 Development
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... ] org $87ae
    ;
    jp $18a3 ; 87ae c3 a3 18 ... $0ats ; chksbuff
    jp $13a9 ; 87fc c3 a9 ... $0ats ; freesect
    jp $15ad ; 8808 c3 ad ... ; testbrk
    ;
    jp $15e2 ; 8826 c3 e2 15 ... 82d2 fe 19 $07ts
    jr z, l_82e4 ; 82d4 28 0e $ ...
    jp jp May 2012 Hardware
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... to that depending on the jr/jp branches taken.

    It ... principle behind clipping the sprites vs the background; if there's ...
    Hikaru Hikaru May 2012 Development
  • 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 …

    ... a
    ret z
    cp 22
    jr z, at_code ;is it ...
    ex de, hl
    jp print


    ... /> ld (print_pos + 1), bc
    jp print
    [/code]

    catmeows catmeows June 2012 Development
  • 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 …

    ... 01 4E *delete
    JP NZ, L_0ECD ; 0A53 ... 01 4E *delete
    JR Z, L_0B93 ; 0B8B 28 06 ... 01 4E *delete
    JR Z, L_0BB6 > ;.0BAF ... 6 * 7T = - 42T
    JR Z, (true) >*1 changed = no ...
    Battle Bunny Battle Bunny June 2012 Development
  • 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 …

    ... 01 4E *delete
    JP NZ, L_0ECD ; 0A53 ... 01 4E *delete
    JR Z, L_0B93 ; 0B8B 28 06 ... 01 4E *delete
    JR Z, L_0BB6 > ;.0BAF ... 6 * 7T = - 42T
    JR Z, (true) >*1 changed = no ...
    Paddy Coleman Paddy Coleman June 2012 Development
  • 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 …

    ... a ;is zero?
    ret z ;if yes end of string ... need a new segment
    jr nz,print_string

    ld ... /> ld d,a

    jp print_string ;continue
    ;
    string ...
    R-Tape R-Tape June 2012 Development
  • 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 …

    ... not needed, E=0 sets Z already
    ld a,e ... ; ISN'T THIS FASTER THAN JR?
    ld a,d ;next ... /> or a ;is zero?
    jp nz,doprint
    ret ;if ...
    Dr BEEP Dr BEEP June 2012 Development
  • 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 …

    ... /> jp entry
    loop
    inc l
    jr z,here ... /> out (254),a
    jp printstuff
    ;
    here ... /> ld h,a
    jp here2
    ;
    someconstants1 ... /> ld (hl),c
    jp (ix)
    block2
    ... /> ld (hl),e
    jp (ix)
    ;
    org ...
    R-Tape R-Tape June 2012 Development
  • SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…

    ... br /> or c ;l$
    jr z,MCDONE ;l$
    ld bc ... CALL $1f54 ;BREAK-KEY
    JP C,$1e73 ;GO-TO-2 ... - jump if not BREAK
    JR MCLOOP ;ignore BREAK
    [/code ...
    Battle Bunny Battle Bunny June 2012 Development
  • 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 …

    ... c ; *s1 - *s2
    jr nz, different

    inc ... lo < hi
    jr nc, interval_done


    jr nc, right_smallest

    ... br /> ret z

    pop hl
    jp while_lohi
    Alcoholics Anonymous Alcoholics Anonymous June 2012 Development
<1…15161718192021…34>

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