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Search Again :: Adv Search 1000 results in 0.021s
<1234567…34>
  • Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …

    ... ,HL
    LD BC,4
    LDIR
    RES 4,(IY+01)[/code]

    Hikaru Hikaru August 2010 Development
  • Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…

    ... ,HL
    LD BC,4
    LDIR
    RES 4,(IY+01)

    JP ...
    Shadow Maker Shadow Maker December 2008 Sinclair Miscellaneous
  • Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…

    ...
    OUT (C), A
    RES 4, (IY+$01)
    RET[/code]
    Then ...
    FrankT FrankT January 2010 Emulators
  • Real Spectrum screen flicker with SCREEN$I've written a basic loader to simply do a 'load "" screen$' based video from a divide+ however I'm finding the Spectrum can't render a screens and a…

    ... ,HL
    LD BC,4
    LDIR
    RES 4,(IY+01)

    JP ...
    zxbruno zxbruno March 2010 Development
  • Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …

    ... ,HL
    LD BC,4
    LDIR
    RES 4,(IY+01)[/code]

    BiNMaN BiNMaN August 2010 Development
  • Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …

    ... ,HL
    LD BC,4
    LDIR
    RES 4,(IY+01)

    JP ...
    zxbruno zxbruno August 2010 Development
  • Tr-Dos questionI hope that people who know Tr-Dos also read these forums :) Let's suppose that I have a .trd disk with an executable file. I want to make this fil…

    ... />
    begin dw 0,length-4 ;; line number, line length

    runusr res 4,(iy+#01) ;; Switch to 48 basic
    velesoft velesoft November 2011 Development
  • 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 …

    ...
    l_ee98: ld a, $01 ; ee98 3e 01
    ex af, af ... 00
    ld b, $01 ; eec2 06 01
    jr l_eeff ; eec4 ... 00
    ld b, $01 ; eef0 06 01
    l_eef2: djnz l_eef2 ... ed 79
    res 4, (iy+$01) ; e077 fd cb 01 a6
    jr l_e082 ...
    jp jp December 2011 Infoseek database
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... />
    begin dw 0,length-4 ;; line number, line length

    runusr res 4,(iy+#01) ;; Switch to 48 basic
    velesoft velesoft January 2012 Games
  • 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…

    ... dec sp
    bit 4,(iy+$01)
    jr z,MODE48 ... bit 4,(iy+$01)
    jr nz,TO48
    TO128: set 4,(iy+$01) ... ;signal "128K BASIC" mode
    jr TO_ALL
    TO48: res 4,(iy+$01 ...
    Battle Bunny Battle Bunny July 2012 Sinclair Basic
  • Yumiko in the haunted MansionSo, here is the promised Halloween preview... Go to the zx section of my homepage to download it. [img]http://members.inode.at/838331/zx/YomikoInTheH…

    ... /> Just tested and doing a res 4, (iy+$01) fixes it.

    I ...
    FrankT FrankT January 2013 Brand new software
  • 'Tir Na Nog' loading screenHere's the original: [URL=http://s23.photobucket.com/user/mlucifersam/media/TirNaNogOrigScr_zps3c500784.jpg.html][IMG]http://i23.photobucket.com/albu…

    ... headerless tap loader and added res 4,(iy+$01) which disables paging on the ...
    FrankT FrankT June 2013 Games
  • A loading screen for Mr. HeliWell, I've managed, once more, to make another pic in less than two weeks with ZX Paintbrush tool from Klaus Jahn and show it for all of you. As seve…

    ... ), $03 ; (std entry point main-4)
    ;
    dec hl ;

    ld a, %00110000 ; bit 4: 0=ROM 0 (128K Editor ... (c), a
    ;
    res 4, (iy+$01) ; bit 4: 1=128K Mode, 0=48K ...
    jp jp June 2013 Games
  • A loading screen for Mr. HeliWell, I've managed, once more, to make another pic in less than two weeks with ZX Paintbrush tool from Klaus Jahn and show it for all of you. As seve…

    ... ), $03 ; (std entry point main-4)
    ;
    dec hl ;

    ld a, %00110000 ; bit 4: 0=ROM 0 (128K Editor ... (c), a
    ;
    res 4, (iy+$01) ; bit 4: 1=128K Mode, 0=48K ...
    Ivanzx Ivanzx June 2013 Games
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... ; line number
    dw length-4 ; line length
    db $f9 ... next line)

    runusr: res 4,(iy+$01) ; Stop paging (lock48mode)/free 23296 ...
    FrankT FrankT January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... a good idea to include res 4,(iy+$01) when running 48k games on ...
    FrankT FrankT January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... a good idea to include res 4,(iy+$01) when running 48k games on ... make sure to add the res 4,(iy+$01).

    I'll give ...
    Speccy_James Speccy_James January 2014 Development
  • Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…

    ... that. If I do lock48mode "res 4,(iy+$01)" will $1eaf still be where ...
    Speccy_James Speccy_James February 2014 Development
  • Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…

    ... start of my disk loader res 4,(iy+$01) and the game seems ok ...
    Speccy_James Speccy_James February 2014 Development
  • Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…

    ... SP,HL
    FD CB 01 A6 RES 4,(IY+1)
    C9 RET ... the paging just before the RES 4,(IY+1) to get 48 BASIC ...
    John Elliott John Elliott December 2008 Sinclair Miscellaneous
  • 128k Basic used much ?Hi - I was wondering if there were many,if any, games programmed in 128k basic? I was also thinking of doing one myself as I wish to make a text heav…

    ... test.)
    [code]
    bit 4,(iy+$01) ;determine Spectrum model
    jr ... ;+128k/+2
    set 7,(iy+48) ;2A/+3/+3e
    [b]REM res n,(address)[/b]
    IF ...
    Battle Bunny Battle Bunny May 2013 Sinclair Basic
  • 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…

    ... ; 16 233
    INC B ; 4 ;reset Zero flag
    EXX ...
    POP HL ; 225
    RES 4, (IY+1) ; 253 203 1 166 ...
    Battle Bunny Battle Bunny December 2011 Sinclair Basic
  • Switch to 48mode without 'SPECTRUM' commandIs there a poke(s) to switch to 48 mode without SPECTRUM command. I want my tape loaders to switch automatically. I know how to switch ram banks ok…

    ...
    OUT (C),A
    RES 4,(IY+1) ; Reset "128 BASIC" flag ...
    John Elliott John Elliott October 2005 Sinclair Basic
  • Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…

    [QUOTE=FrankT;361395]For +2A +3, I don't know.[/QUOTE]

    Try clearing bit 4 of (23611). A simple RES 4,(IY+1) if IY holds its normal value :)

    Edit: Preferably before the interrupts are enabled.
    Bob Stains Bob Stains June 2009 Games
  • Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…

    ... clearing bit 4 of (23611). A simple RES 4,(IY+1) if IY holds its ...
    FrankT FrankT June 2009 Games
  • Jumping to BASIC after importing 23296,1703Sorry for the confusing title. :-D Now that I've learned how to stop a game from starting after loading (in Fuse and Specemu), I have a few more que…

    ... 48 BASIC:
    [code]
    res 4, (iy+1) ; clear 128 mode bit ... hl, 4867 ; address of MAIN-4 in ROM
    push hl ...
    Marko Marko September 2009 Sinclair Miscellaneous
  • +3 assembler questionI was wondering if anyone could give any suggestions as to how to get this bit of code working on the +2A/+3 in 128k mode. It works on the +128k/+2 i…

    ... just needed to put a RES 4,(IY+1) at the start of ... the +3 is using bit 4 of FLAGS for, though. The ...
    Battle Bunny Battle Bunny August 2010 Sinclair Basic
  • Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…

    ... /> ; 8. Load bank 4 at 4:C000: 0x4000 bytes
    ... 4
    ld de,04000h
    ld hl,0C000h
    ld iy ... mode
    ;
    res 4,(iy+1)
    ei
    ... ld a,(BANKM)
    res 4,a ;ROM2
    or ... ret
    ;
    pciy: jp (iy)
    ;
    bank7:
    John Elliott John Elliott January 2011 Games
  • tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…

    ... is new.

    The "RES 4,(IY+1)" line is to tell ... /> EX DE, HL ; 235
    RES 4, (IY+1) ; 253 203 1 166 ...
    Battle Bunny Battle Bunny November 2011 Sinclair Basic
<1234567…34>

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