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Search Again :: Adv Search 1000 results in 0.044s
<1234567…34>
  • out (254) - Bright Border[code] ld a,%00000111 out (254),a [/code] The above changes the border to white. Is there a way to set the border to Bright white? Cheers

    [code]
    ld a,%00000111
    out (254),a
    [/code]

    The above changes the border to white.

    Is there a way to set the border to Bright white?

    Cheers
    robpearmain robpearmain February 2007 Development
  • In-game AY music and sound effectsI'm currently working on various aspects of a Spectrum game and thinking now about the sound side of things. I know you can use a utility like Vortex…

    ... thinking now about the sound side of things. I ... is possible to implement sound effects in the game ... to continue whilst the sound effect is playing. Am ... using the beeper via an out(254) routine (taking care not ... the third channel for sound effects? I would need ...
    adrian_singh adrian_singh March 2017 Development
  • Machine code crunching soundI'm looking for a re-locatable subrountine that makes a crunching sound, no border effects(border is black). Anyone got anything suitable?

    ... may work with the DkTronics Sound FX thingy:

    [URL ... , if you're familiar with asm: I went into the code ... 248 in front of each out (254),a instruction for black border ...
    R-Tape R-Tape November 2011 Development
  • 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 …

    ... -sense.com/chris/zx/PixelLFSR.asm]asm[/url], [url=http://www.real ... uncommented) outputs noise to border/sound
    ;#define BORDEREFFECT


    #ifdef BORDEREFFECT
    OUT (254), A ; Border/Sound effect
    #endif
    BloodBaz BloodBaz March 2012 Development
  • OUT to file, IN from fileOUT - sentences won't do much on emulators since they mostly communicate with external devices. If there was an emulator that would write the (last) …

    ... would write the (last) OUT-ed value to a file ... standard IO-device that uses OUT 31 to light up some ... could write to file 31.OUT the value of what ... was OUT-ed and in another ... building the hardware.

    OUT 254 (from tape) might be handled ...
    Dr BEEP Dr BEEP August 2002 Emulators
  • ZX Spin v0.501 out nowStill a test version folks, but this is pretty good stability wise, if I may say. Though I suspect that you're all going to prove me wrong :-) An…

    ... a small glitch in the sound synch code, (which was only ... "latency"
    slider in the sound options. You can use this ... can do 50fps) to sort out any sound synch
    problems. Hopefully ... and
    dragging the selection out of the window no longer ...
    Dunny Dunny July 2004 Emulators
  • Keyboard Input$/scan problemHi, I'm finally fulfilling my promise to get a reasonable understanding of the Speccy and embarking upon attempting a few simple routines in Assembl…

    ... /> LD D,A
    OUT (254),A
    DEC D
    LD C,254
    OUT (C),D
    JR ... ,LOOP

    I hate to sound ... it will not recognise: 'OUT (FEh),D' or 'OUT (254),D'!
    < ... br />
    Can anyone out there spend some time and ...
    Jagd Tiger Jagd Tiger January 2009 Development
  • How to get proper SOUNDHi. This subject appeared in several threads of the Forum. I was even lately spinning some reminiscences about old good times and connecting Spec…

    ... of those machines has line-out (flat sound supposed to be connected ... Amstrad Spectrums have phones-out with fat sound but on the other ... line-out is present too, of course.

    Multiple sound- ... ports mixed into one sound-out is also an important thing ...
    Mister Beep Mister Beep April 2011 Sinclair Miscellaneous
  • Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…

    I have written some asm code which allows me ... port row
    in a,(254) ; check that row
    out (254),a
    ld a ... get row
    in a,(254) ; check for keys on that ... /> d_loop: dec a
    out (254),a
    dec bc
    polomint polomint September 2011 Development
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... [/URL] by Arjun. Note: maybe out of date.)

    [B ... Variable to data Declared in ASM at End of File
    Timmy Timmy January 2012 Development
  • Spectrum +2 gray strong noise at TV sound outputWhat could be the reason of strong sound noise at TV channel on gray +2? In the beginning this speccy was dead, it had faulty 78S05 and ZTX650. Added…

    ... be the reason of strong sound noise at TV channel on ... that there is overwhelming noise sound on TV channel.
    Tried ... .
    On the audio out jack, sound is a ok.
    Apart ... />
    You can hear spectrum sound while I mute and unmute ...
    netomc netomc April 2012 Hardware
  • 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…

    ... Game and it plays the sound fine, but then plays the ... sound again, and again, and ... 0
    PLAY: ld hl,SOUND
    di
    push iy ... br /> SFXRTBORD: or 0
    out (254),a
    dec bc
    Shando Shando September 2012 Development
  • Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…

    ... .
    ;Perform OUT 254 every two lines for 48K sound (at expense of ... />
    ld a,DEBUG_BORDER
    out (254),a

    sprite_interrupt
    joefish joefish March 2014 Development
  • tzx to tapehow do i put a tzx file to a audio tape, i want to back up my old speccy games to play on my speccy

    ... guess there's a converter out there somewhere that does a ...
    RRCA
    RRCA
    OUT (254),A
    JR 32769
    sound recording from the sound menu.

    sound recording, the recorded WAV should ...
    GOC GOC September 2003 Games
  • Best way of getting source/binaries onto Spectrum/Sam?What is the best way of getting source and binaries from a PC onto a Spectrum or a Sam Coupe? It is quite tiresome typing it in each time and savin…

    ... a,2
    loop:
    out (254),a
    xor 7
    Write that to test.asm, and assemble it to test ... using: [i]pyz80.py test.asm[/i]

    The image ...
    obo obo February 2007 Development
  • SoundHi Could someone explain how to "decode" the spectrum sound?(the beeper). I'm guessing its an out port? Cheers /Jimmy

    ... Yes bit 4 of port 254 (0xFE).
    Bear in ... high (e.g. with OUT 254,16) only produces a click ... g. with OUT 254, 0) will produce another click. Sound is made ... in [i]generating[/i] sound effects, you need to write ... a whole variety of sound effects with short m/ ...
    BloodBaz BloodBaz April 2007 Emulators
  • Time travel gamesDo you remember any game in which you travel through the time, past, future,...? The games I know: Back to the Future Back to the Future II Back to…

    ... totally truthfull - I ripped the sound code out of 'Trantor' (I think ... />
    Honest! (Search for two OUT (254),a instructions within a few ... !

    I wrote a sound editor for Keith to use ... to flash when a drum sound was triggered. Long since gone ...
    frobush frobush March 2008 Games
  • Beeper octave range...A dumb question, I know, but I've found two conflicting sources of information on the octave range of the Sinclair beeper. I suppose I'm being a lit…

    ... greater output range than '80s sound-generating ics which depended on ... /> loop:
    out (254),a
    xor b
    out (254),a
    xor ...
    Alcoholics Anonymous Alcoholics Anonymous April 2008 Sinclair Miscellaneous
  • Spectrum Machine Language For The Absolute BeginnerNot quite sure if this should be in here but here goes. Having never delved into machine code before I thought id have a go at this book and its qui…

    ... :
    ld a,16
    out (254),a

    ; Wait

    ld a, 2
    out (254),a

    ; Wait
    [/code]
    for a cool sound effect.

    You can ... save the code using SAVE "sound" CODE 32768,28
    BloodBaz BloodBaz April 2008 Sinclair Basic
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    ... , sound routines work by toggling bit 4 of port 254, which ... on 16K Spectrum. It will sound terrible though.

    ... XOR A ; Zero A.
    OUT (254),A ; Set beeper low.
    OUT (254),A ; Set beeper low.
    Matt_B Matt_B November 2008 Sinclair Basic
  • Keyboard Input$/scan problemHi, I'm finally fulfilling my promise to get a reasonable understanding of the Speccy and embarking upon attempting a few simple routines in Assembl…

    ... ;331074]
    I hate to sound like a bad craftsman blaming ... instruction 'IN A,(C)' or 'OUT (C),D' :-? ...... so I decided ... it will not recognise: 'OUT (FEh),D' or 'OUT (254),D'!
    [/QUOTE ... you may wish to try out the assembler included with the ...
    Arjun Arjun January 2009 Development
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... end up with a farty sound to the music.

    sound buffer, then intersperse OUT 254 commands at regular ...
    joefish joefish March 2009 Development
  • The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…

    ... can get some sound out of it by synchronising an "OUT (254),A" command ... get some squeaks and whines out of it. So it won ...
    joefish joefish June 2009 Development
  • Framerate of arcade gamesThe Golden Age of video games coincided with the birth of 8-bit home computing; this is why every computer of that era has a slew of really bad Pacma…

    ... . No 48K Spectrum game had sound. Ever. At All.[/QUOTE]

    Spectrum beeper sound involves sending OUT 254 commands at the required ...
    ajmoss ajmoss November 2009 Games
  • Framerate of arcade gamesThe Golden Age of video games coincided with the birth of 8-bit home computing; this is why every computer of that era has a slew of really bad Pacma…

    ... .

    Spectrum beeper sound involves sending OUT 254 commands at the required ...
    Fikee Fikee November 2009 Games
<1234567…34>

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