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<1…16171819202122…34>
  • Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…

    ... 4,(iy+$01)
    jr z,MODE48
    ld a ... /> cp 233
    jr z,PLUS3M
    MODE48: ld ... ;BREAK-KEY
    JP C,$1e73 ;GO-TO- ... if not BREAK
    JR MCLOOP ;ignore BREAK
    ...
    Battle Bunny Battle Bunny July 2012 Sinclair Basic
  • Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…

    ... 4,(iy+$01)
    jr z,MCCONT
    ld a ... ;BREAK-KEY
    JP C,$1e73 ;GO-TO- ... if not BREAK
    JR MCLOOP ;ignore BREAK
    ... bit 4,a
    jr z,TO_ALL
    ld hl ...
    Einar Saukas Einar Saukas July 2012 Sinclair Basic
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... is
    sub 165 ;
    jp po_tokens ; exit via PO_TOKENS
    jr z, putit ;
    pop bc ; drop ... a ; was cp 0
    jr z, pst ;

    inc e ... , e ;
    and 31 ;
    jr z, pst ;
    ld a, (coords_x ...
    chev chev August 2012 Development
  • Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…

    ... br /> or a
    jr z,gameover
    ld a,8 ... change line 55 to 'jp PRINCIPALLOOP'.
    Assemble, save ... br /> and 1
    jr z, roadleft
    inc hl< ... br /> and 1
    jr z, roadleft
    inc hl ... or c
    jr nz, wait
    jp principalloop
    gameover ...
    buzzy buzzy September 2012 Development
  • Kempston detectionI could use some help. This Kempston joystick behaviour drives me mad. I've written a game called Necrospermia recently ([url]http://www.worldofspec…

    ...
    ei
    halt
    jp pe,.int_stays_on
    di
    and c
    ;jr z,.kempston_exists
    ;...
    [/code]
    Hikaru Hikaru October 2012 Development
  • my tiny intros[IMG]http://pouet.net/screenshots/60493.png[/IMG] [url]http://pouet.net/prod.php?which=60493[/url] the following work will appear behind Demosplash…

    ... cp # 5b: jr nz, lp0
    stu: jr mlp
    [/ ... a, h: cp # 5b: jr nz, lp0; condition for completion ... stu: jr mlp; another space saver JP XXX -3 bytes, JR XXX - ... lp0
    bit 2, h: jr z, lp0 [/PHP]

    stu: jr mlp
    [/PHP]
    ...
    g0blinish g0blinish October 2012 Development
  • Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…

    ... /> JP rr JP nn JP (rr+n) JP (nn)
    JP cc,rr JP cc,nn JP ... cc,(rr+n) JP cc,(nn)
    RET RET cc JR nn JR ... SET
    cc: C NC Z NZ P M PE PO ...
    Jonathan Harston Jonathan Harston November 2012 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... br /> ld ixh,b
    jp aploop
    apbranch2: call ap_getgamma ...
    ld ixh,b
    jp aploop

    ap_r0_gamma: ...
    ld ixh,b
    jp aploop

    ap_getgamma2: ... c
    sub ixh
    jr z,ap_r0_gamma ;if gamma code is ...
    Metalbrain Metalbrain November 2012 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... br /> ld ixh,b
    jp aploop
    apbranch2: call ap_getgamma ... ,c
    sub ixh
    jr z,ap_r0_gamma
    dec a
    ld ixh,b
    jp aploop

    ap_r0_gamma: ...
    ld ixh,b
    jp aploop

    ap_getgamma2: ...
    Metalbrain Metalbrain November 2012 Development
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... /> 25029 SUB 207
    25031 JR NZ,25025
    25033 DEC ... /> 25034 OR (HL)
    25035 JR Z,25057
    25037 DEC HL ... ,DE
    25060 JR NZ,25025
    25062 JP 25000[/code]
    LCD LCD November 2012 Development
  • Is this TZX OK?I'm in the middle of preserving a bunch of Danish MIAs and STPs. I'm slowly getting up to speed with MakeTZX. One tape is giving me some trouble. You…

    ... /> 23815 INC DE
    23816 JR NZ,23822
    23818 DJNZ ... SBC HL,DE
    23851 JP NZ,00000
    23854 RET ... )
    23884 JR Z,23889
    23886 JP 00000
    23889 JP 40000
    Andrew Barker Andrew Barker January 2013 MIA/STP/SDP
  • Converting games to disk: difficult loadersThis thread has an spanish version in foro speccy, but I haven't gathered enough information to overcome my problems. I've been converting some game…

    ... ] EI
    CALL 654
    JR Z,24046[/code]
    This is ... the loader. At 24046 is JP 43922.

    Also when ...
    FrankT FrankT January 2013 Games
  • Accidental rainbow effects.. How do I adapt?I've somehow bizzarrely created a rainbow text effect on my title screen by accident. The title was just supposed to flash different colours whilst …

    ... 1
    jr z, start
    call flash
    jp loop

    R-Tape R-Tape February 2013 Development
  • Buzzer sounds tips'n'tricksSo I have an ARM Cortex M3 with a buzzer connected to its GPIO pin. And because I read this forum I know that there is no need to add a separate buzz…

    ... or a
    ret z ;if end of data ... beeper output mask on
    jr skip1a

    skip1 ... beeper output mask on
    jr skip2a

    ...
    pop bc
    jp readdata
    [/CODE]
    utz utz May 2013 Development
  • Relocation with SDCCI desperately need auto- relocation with SDCC. Something that will compile all of my code using start address 0 and generate relocation table so that…

    ... found
    or c
    jr z, notfound

    ld a ...
    cpi
    jr z, match ; found character
    jp po, notfound ; n ... \\0
    dec e
    jp nz, loop ; nope, still more ...
    Alcoholics Anonymous Alcoholics Anonymous June 2013 Development
  • Is there an SNA halt bug?Hello all, I noticed that some SNAs don't work on my emulator but they do work in almost everyone else's, SPUD fails with them too which is a tad sp…

    ...
    bit 2,a
    jr z,X0121
    ei
    halt ... mode
    cp 1
    jr z,X012A
    im 2
    ld sp, (22B0h) ; SP
    jp 2000h
    [/code]

    John Elliott John Elliott July 2013 Emulators
  • Is there an SNA halt bug?Hello all, I noticed that some SNAs don't work on my emulator but they do work in almost everyone else's, SPUD fails with them too which is a tad sp…

    ...
    bit 2,a
    jr z,X0121
    ei
    halt ... mode
    cp 1
    jr z,X012A
    im 2
    ld sp, (22B0h) ; SP
    jp 2000h
    [/code]

    Korinel Korinel July 2013 Emulators
  • Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…

    ... ) ;!!
    or a
    jr z,DOSInit
    PI_3: call SWAPFG ... call $1539 ; setup cache
    jp $0500 ; set default drive and ... ;!!
    or a
    jr z,PO_2
    ld hl,$4000 ...
    Battle Bunny Battle Bunny July 2013 Games
  • generating a pre-defined list in an un-defined sequenceI've decided to become a drunkard, to which end I've been drinking a whole bottle of beer in one day (whereas normally I'd make it last 2 or 3 days).…

    ... br /> or c
    jp nz,LOOP1
    ;[color ...
    dec e
    jr nz,RotateLeft

    ... (SEED32+2),HL
    JP M,RANDOM3
    LD HL ... /> INC HL
    JR Z,RANDOM2
    RANDOM3:LD hl ...
    Battle Bunny Battle Bunny July 2013 Sinclair Basic
  • generating a pre-defined list in an un-defined sequenceI've decided to become a drunkard, to which end I've been drinking a whole bottle of beer in one day (whereas normally I'd make it last 2 or 3 days).…

    ... h
    rr l
    jr nc, done_lfsr

    ld ...
    Alcoholics Anonymous Alcoholics Anonymous July 2013 Sinclair Basic
  • generating a pre-defined list in an un-defined sequenceI've decided to become a drunkard, to which end I've been drinking a whole bottle of beer in one day (whereas normally I'd make it last 2 or 3 days).…

    ... />
    add hl,hl
    jr nc, done_lfsr

    ld ...
    Alcoholics Anonymous Alcoholics Anonymous July 2013 Sinclair Basic
  • Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…

    ...

    LMUL_10:jp LMUL_10_NUM
    jp LMUL_10_STR

    ... DDD
    call NUMCOPY_twice
    jp GKHL00

    NUMCOPY_twice ... ,(hl)
    cp " "
    jr z,PADPAD
    ld (de),a ...
    Battle Bunny Battle Bunny July 2013 Sinclair Basic
<1…16171819202122…34>

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    harriusherbartio on 11:21AM
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    harriusherbartio on 11:01AM
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    Renegade on April 21
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