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<1…18192021222324…34>
  • assembly optimization: times tenDecimal numbers are not computer friendly :) Anyway, short of saying "sod it - I'll multiply by 8" - and another part of the program does indeed div…

    ... E,L
    LD D,H
    ADD HL,HL
    Gedlion Gedlion August 2012 Development
  • BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…

    ... /> #include

    #include "bifrost.h"

    #define printMode(mode ...
    Einar Saukas Einar Saukas August 2012 Development
  • Simple AY library in z88dk/CI was interested to see if I could make the 128k AY chip work, and as there wasn't any library on it, I just made one for fun. It's certainly not th…

    ... /> #asm
    ld d,h
    ld h,0
    call _ay_command ... /> #asm
    ld d,h
    ld h,2
    call _ay_command ... /> #asm
    ld d,h
    ld h,11
    call _ay_command ... /> #asm
    ld d,h
    ld h,13
    call _ay_command ...
    Timmy Timmy August 2012 Development
  • Small ProblemI have a small problem (fnar!) that I'm trying to overcome. Basically I need to rlc or rrc bits 4 to 7 of the H register without touching the rest. …

    ... 4 to 7 of the H register without touching the rest ... idea?

    LD A,H
    AND F0
    ADD ... C,A
    LD A,H
    AND 0F
    OR ... C
    LD H,A
    RET
    jamorski jamorski August 2012 Development
  • 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…

    ... %11000
    or h
    ld h,a
    pop af ... /> dec hl
    inc h
    djnz scrscrloop
    dec hl
    inc h
    djnz overscrscrloop
    uglifruit uglifruit August 2012 Development
  • BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…

    ... /> #include

    #include "bifrost.h"

    #define printMode(mode ...
    Einar Saukas Einar Saukas August 2012 Development
  • bored in gateshead flat tyreMorning. :/ Bored, waiting in Gateshead for R.A.C to take me to a BMW bike garage. Flat tyre, inner tube type. R.a.c controller was rude, almost host…

    ... . :( bored, bored, bored.

    H, and the traffic systems round ...
    thx1138 thx1138 August 2012 Chit chat
  • next pixelI searched the "Discussions" groups for the phrase "next pixel" and got no matches - and removing the quotes it discards the "next" and just searches…

    ... z

    set_hl ld h,d
    ld l,e ...
    Battle Bunny Battle Bunny September 2012 Development
  • Stuck in the Forgotten City.Hello. I am playing the adventure 'Forgotten City' by H.A.W.K. [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006322[/url] I am stuck, as …

    ... the adventure 'Forgotten City' by H.A.W.K.

    philicorda philicorda September 2012 Games
  • Any ideas on speeding up this assembler segment?It copies a pixel column of a rectangle which may be anywhere in the display file to a pixel column in d$. The source column may start at any bit pos…

    ... position in d$()
    inc h ; 4 calculate address of next ... pixrow down
    ld a,h ; 4
    and $07 ; 7 ...
    Battle Bunny Battle Bunny September 2012 Development
  • BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…

    ... f; // generic counter
    int h, i; // temporary variables
    < ... /> }
    BIFROST_fillTileAttrH(lin[f], HRC2COL(h), INSIDE_COLOR*9);

    // ...
    Einar Saukas Einar Saukas September 2012 Development
  • BeepFX ProblemHi All, I'm currently trying to integrate the BeepFX engine in my 100% Assembler Game and it plays the sound fine, but then plays the sound again, a…

    ... inc hl
    ld h,(hl)
    ld l,a ... ,de
    ld a,h
    SFXRTDUTY: cp 0 ... ld d,1
    ld h,d
    ld l, ... inc hl
    ld a,h
    and 1FH
    ...
    Shando Shando September 2012 Development
  • multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…

    Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • saving time populating large arraysI use a variation on this idea for storing machine code at the end of programs without interfering with LIST, then it occurred to me that it would al…

    ... (v)=v-FN h(v)*256: DEF FN h(v)=INT (v ... g(vars): POKE 23671,FN h(vars):
    POKE 23627,PEEK ... g(vars): POKE 23671,FN h(vars):
    POKE 23627,PEEK ...
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • Dissecando JogosCurrent WoS registration for Brazilian book [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000819"]Dissecando Jogos[/URL] incorrectly indica…

    ... =150036&w=350&h=460&p=/capas/[/IMG ...
    Einar Saukas Einar Saukas October 2012 Infoseek database
  • Red Attack missing authorIn the loading screen, it can read Written by, and although I have some doubts about the initials, I would go with "H F M" What do you guys think? …

    In the loading screen, it can read Written by, and although I have some doubts about the initials, I would go with "H F M"

    What do you guys think?

    [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0004068[/url]
    Ivanzx Ivanzx October 2012 Infoseek database
  • Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…

    hi! please, help with code:
    [PHP]For x=-100 To 100
    For y=-100 To 100
    If (x/2-25)*(x/2-25)+(y-50)*(y-50)
    g0blinish g0blinish November 2012 Development
  • Optimisations in Exomizer Z80 decrunch codeThis is the 163 bytes old code (simple and optimized): [CODE] ld iy, exo_mapbasebits ld a, 128 ld b, 52 push de exo…

    ...
    push hl
    ld h, d
    ld l, e ... l, (iy+52)
    ld h, (iy+104)
    add hl ...
    push hl
    ld h, d
    ld l, e ... l, (iy+52)
    ld h, (iy+104)
    add hl ...
    antoniovillena antoniovillena November 2012 Development
  • Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …

    ... hkab"+STR$ USR ellipse
    h = CHR$ centre x coordinate - ... ld c,(ix+0) ;C =h (x mid-point)
    ld ... a,c ;A =h
    add a,(ix+2 ... sub (ix+0) ;A =x-h =xh
    jr nc,NOTNEG ...
    Battle Bunny Battle Bunny November 2012 Development
  • Best SD reader for 48k and 128K models?Hi. I'd like to buy a sd interface compatible with 48K and 128K +2A model. I would like to have a fast way to load tzx, z80s and tap filenames withou…

    ... ?
    See you.
    D.H.
    DaRkHoRaCe DaRkHoRaCe December 2012 Hardware
  • divIDE +3e: How can I put games into hard disk?I've got a +3, a divIDE and the +3e ROMs. I want to copy some games in the CF card so my +3e could execute them from BASIC ("disabled" divIDE, loadin…

    ... load anything after starting). Chase H.Q. would qualify (in 128k ...
    Zup Zup December 2012 Games
  • Stormin' Norman carks itWell, looks like General Norman Schwatzkopf has died age 78. It also looks like George H Bush will be following him to the grave pretty soon now, he…

    Well, looks like General Norman Schwatzkopf has died age 78.

    It also looks like George H Bush will be following him to the grave pretty soon now, he's aged 88 and in intensive care for a persistent fever.
    Winston Winston December 2012 Chit chat
  • Keys in the middle of the keyboard not working.Have just (mostly) successfully carried out the composite mod, but as the title says the middle two columns of keys of my rubber keyed issue 3 48K sp…

    ... :5,6,T,Y,G,H,V and B. If it ...
    thingley thingley January 2013 Hardware
  • Tapes found!Hi to all. I (re)found a tape box today. I give you a list of what I have here: I don't know if something is M.I.A. Some Italian Compilations (don't…

    ... , Everest, Fred , Jet Set Willy , H.U.R.G, Zaxxan, Gnasher ...
    DaRkHoRaCe DaRkHoRaCe January 2013 MIA/STP/SDP
  • checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…

    ... ]
    LD C,A : XOR H : AND $f0 :
    LD D ... /> LD B,A : RRA : XOR H : AND $0f :
    LD E ... ,L : XOR B :
    LD H,A : LD A,E : XOR ... A,B : XOR H : XOR E
    LD H,A : LD A ...
    Battle Bunny Battle Bunny January 2013 Games
  • Space Doubt.At the end of R.H.P.S., right after the credits go by, the last thing it says is "Coming soon Space Doubt". ( [I]No, it's[/I] The End[I], actually. […

    At the end of R.H.P.S., right after the ... is it related to R.H.P.S.?
    ZnorXman ZnorXman January 2013 Games
  • Spectrum +3 Disk GamesGreetings from Finland. I have some disk games for sale (in original boxes): 1) Artura 2) International Karate 3) Hercules - Slayer of the Damned 4…

    ... ) Operation Thunderbolt
    8 ) Chase H.Q
    9) Double Dragon ...
    Vipered80 Vipered80 January 2013 Sales
  • Recommend some good films (movies)One thing always surprises me about this forum is that there's no semi-permanent film recommendation topics, but since there are currently two films …

    ... 'm a massive L&H fan, but I'd never ... good at all. L&H are underused, as they are ... , as I love L&H, but I won't be ...
    ewgf ewgf January 2013 Chit chat
  • ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …

    ... I change the bridgins to H?

    edit:
    Here ... has been replaced and no H N bridges have been changed ...
    gtsamour gtsamour February 2013 Hardware
<1…18192021222324…34>

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