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<1234567…34>
  • Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…

    ... sequence of data writes to ay registers which is described fully ... /> The 128k spectrums map the AY register select port to i/o address ... /> This means write 124 to AY register 0 (R0), 0 to R1 ... /> [code]
    OUT $fffd,0 ; select AY R0
    OUT $7ffd,124 ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... ]
    Which clashes with the AY register select.
    [quote]port FDFD[/quote ... /> Which also clashes with the AY register select.

    Thanks to Philip ...
    chev chev August 2010 Hardware
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... with the AY register select.

    Which also clashes with the AY register select.
    velesoft velesoft August 2010 Hardware
  • "Floating" AY registersWhile I was working on some AY sample-related stuff, it occurred to me that with the AY port not being completely decoded, it would be a handy CPU-ti…

    ... select AY register 8... provided that the AY ignored the top 4 bits of the register ... unused register number above 0x0f puts the AY into ... treat these as ordinary AY register accesses modulo 16, as ... Unless otherwise specified, address bits DA7-DA4 are programmed ...
    gasman gasman December 2008 Hardware
  • The F register unused bitsI'm doing some reading and trying to organize my Spectrum ML apprenticeship and while looking in greater detail at the flag register one question pop…

    ... greater detail at the flag register one question popped.

    register directly or make use of bits 3 and ... 't. But those two unused bits surely look very tempting...
    rahtgaz rahtgaz January 2009 Development
  • c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…

    ... that the AY registers are selected. The high bits are ... that it selects the AY register 8. So basically try ... /> out (c),a ;select AY register 0
    ld b,# ... AY_found
    out (c),l ;select "AY register 16" (it does not exist ...
    Hikaru Hikaru March 2017 Announcements
  • Next step in MIDI to AY conversionI e-mailed the author of MID2AY with a few questions. While I wait for a reply, I would like to expose my ideas. There should be a better way to conv…

    ... MIDI to something that the AY can play. And yes ... /> -Assign channel a to AY-channel b
    -Export ... TZX with player and AY data...)
    -Select channel to be ... (like Gasman and the AY Riders did), we wouldn ... -style tracker for the AY, the output generated by ...
    zxbruno zxbruno May 2008 Development
  • Fast AY PlayerThis is player for ay register dump stream (compiler for PC included). Speed: 980..1067t / 1200..1287t (without pattern change/with pattern change) …

    This is player for ay register dump stream (compiler for PC ...
    tmk79 tmk79 November 2010 Development
  • Restoring AY registersAfter doing (not still finished) the sna to tap converter, I'm going to try to do the same for 128k snapshots. I've got threee ideas about what to do…

    ...
    [b]1.- Forget about AY:[/b]
    SNA snapshots don ... 7.
    5.- Restore page register $7ffd.[b](*)[/b]
    ... CPU registers).

    AY registers would be "out of ... a delay between selecting an AY register and writing a value?
    Zup Zup April 2018 Development
  • ZEsarUX-7.1 BETAHi I have uploaded a new ZEsarUX 7.1 BETA version here: https://github.com/chernandezba/zesarux/releases/tag/7.1-10082017 Changelog of this …

    ...
    Fixed bug reading AY registers: unused bits for registers are set ... /> *readdir call was incrementing PC register when there was no more ...
    chernandezba chernandezba August 2018 Emulators
  • ZEsarUX-7.1Hi! There’s a new stable version of ZEsarUX, version 7.1! The next 24th of September it will be 5 years old :) So this is a special anniversary…

    ... /> Added setting --random-r-register to generate random value for ... *Now you can use every register, variable, number on any ... Fixed bug reading AY registers: unused bits for registers are set ... readdir call was incrementing PC register when there were no more ...
    chernandezba chernandezba September 2018 Emulators
  • AY-3-8912 help !Hi all. Happy new yeay. I'm new to spectrum programming, and am interested in writing some music for the +2 AY chip. The problem is...I cant find …

    ... really updates when a register is in need of ... as a 128K Spectrum, select 128 Basic from the menu ... as "LOAD SAMPLE"). Then select "PLAY" to hear the ... the latter to select one of the AY's 14 registers ... get / put data to that AY register.

    The TS2068 ...
    Alcoholics Anonymous Alcoholics Anonymous January 2004 Development
  • AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…

    ... in clock frequency between the AY in 128K Spectrums?
    < ... /> [QUOTE=Mike Wynne]Board,Frequency,Register Select,Data

    Quicksilva ... every computer needed its own AY interface in order to ... sound exactly like the internal AY of the computer it' ...
    zxbruno zxbruno October 2009 Hardware
  • Playing AY sounds with BASIC.Is it possible? If so how? I've seen in one forum a while back mention of using interrupts to play but AFAIK this is machine code only. The goal of …

    ...
    Out 65533, i ' Select which AY register
    Out 49149, sonidos (sonido ...
    na_th_an na_th_an May 2010 Sinclair Basic
  • Bell sound with PLAY command?Hi Folks, I am no musician so I was hoping someone could give me a PLAY command that would sound like a bell on the Spectrum. A bell that sounds li…

    ... not in BASin with AY support turned on. More ... first 14 register the AY chip has. Each register has a ... purpose:

    [code]AY REGISTERS< ... sense of such values: register 13 is modified by ... bit-wise values in register 7 (bits 5, 4 and ...
    na_th_an na_th_an November 2010 Sinclair Basic
  • AY Magic version for ZX81 was bornModified Ay magic ,my previous interface for zx48. On board, ay chip based on Zonx interface but with stereo output and rampack 16 or 32 kilo on boa…

    ... .rwapservices.co.uk/ZX80_ZX81/forums/ay-tunes-on-a-zx81-t12 ... we need to turn the AY Magic into an all-in ... ?

    [CODE]Board Frequency Register Select Data
    Quicksilva 0.8125MHz ...
    zxbruno zxbruno May 2011 Hardware
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... internally; none are redundant. The AY-3-8912 is designed to ... by register 14 of the AY-3-8912 sound generator." ..... register 14 bits 2 ... for serial I/O with bits 2 and 7 probably being ...
    toadstool toadstool November 2012 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... /> ld bc, ay_reg ; AY register for Timex and 128
    select it
    ld a, 0xff ; silence AY
    ... br /> ld bc, paging ; select paging
    ld a, % ... print_a_2:
    exx ; alternate register set
    push hl ; ...
    chev chev October 2013 Development
  • Where can I get some AY music asm/binary files?Is there an online repository for these types of file that people can download and use on their projects? Seen something similar for MSX (Z80 base…

    ... similar for MSX (Z80 based AY I think), will those .asm ... ]
    The MSX uses an AY-3-8910 compatible sound chip ... /O ports to access the AY-3-8910 registers, so you ... Register Select and $7D for Register Data.
    The Spectrum uses $FFFD for Register Select ...
    GReW GReW March 2016 Development
  • Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…

    ... (128k memory paging port) / 65533 (AY register port) (***) / 16384 (start of display ... />
    (***) Not seeing the AY ports 65533 and 49149 in ... 8-bits ($fd) do not change. This somewhat simplifies the AY ... - by looking at which bits are set and reset.
    Alcoholics Anonymous Alcoholics Anonymous October 2016 Development
  • BASin r14d - Final bugfix for the r14 seriesOk, there's not a great deal to "show" here, as most of the work has been going on "under the hood" so to speak. And there's been a [i]lot[/i] of wor…

    ... - BASin now supports MIDI via AY register 14 (and the PLAY command ...
    Dunny Dunny December 2008 Emulators
  • AY sound is directed to MIDI on some emulator ?I am not sure, but it seems that current AY emulations are going to the PC's soundcard Wave device. Is there any emulator that directs the AY instruc…

    ... MIDI channel 10, all at AY Register level, and that would give ... file of whatever bit of AY music. I am slightly suprised ...
    b00mzi11a b00mzi11a January 2004 Emulators
<1234567…34>

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