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  • RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…

    ... /left/right/fire joystick lines (AY-3-8912 IOA7, IOA3, IOA2 ... 0.7V and prevent the AY-3-8912 pins from sinking ... . Pin 8 on both joystick ports now connects directly to ground ... is now direct access to AY port bit 2.
    rga24 rga24 May 2014 Hardware
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... modify rom to use original AY. no need to modify any ... that only BASIC calls the AY via the ROM, it would ... to add an AY chip on the 128 ports as part of ... prototype, he hooked up an AY chip so that it was ... the 128 and the Timex ports.
    chev chev May 2014 Hardware
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... that only BASIC calls the AY via the ROM, it would ... to add an AY chip on the 128 ports as part of ... prototype, he hooked up an AY chip so that it was ... the 128 and the Timex ports.[/QUOTE]
    Yes, that's ... thought. I planned to add AY and Kempston Joy in the ...
    superfo superfo May 2014 Hardware
  • Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…

    ... the ULA, regardless of which ports were used.[/QUOTE]
    ... original ULA applies 4 different IO contention patterns, see [URL=" ... /wiki/Contended_IO"]here[/URL]. The ports #FF3B and #BF3B, which ... #FF3B and #BF3B), those ports would be already contended by ...
    Patrik Rak Patrik Rak May 2014 Emulators
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... russian commanders with DIVIDE IDE ports and FAT32 support. Wild copier ... esxdos, show SCR files, play AY music files,etc.. but can ...
    velesoft velesoft May 2014 Announcements
  • Crowdfunding ULAs?Hi everybody, I've found someone who's willing and able to make another production run of the Plessey ULA6C001E-7. We're not talking small amounts …

    ... also have an AY at the usual 128K AY ports included.

    Winston Winston July 2014 Hardware
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... had it configured with 128k ports. The plan is that it ... you can emulate any AY hardware or add AY sound to 48k ... could have stereo sound with AY sound on one channel and ...
    Basher Basher August 2014 Hardware
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... want to consider adding dual-AY support using the TurboSound method ... speakers and choice of spectrum ports for each device so you ...
    Basher Basher August 2014 Hardware
  • IO Ports (Spectrum)Hi all, Working on a new Spectrum interface card I have the prototype powered up and basically working.......but I want to play with the IO addressi…

    ... in order to test my IO address mapping.

    Basically ... one of the 8-bit ports in output mode
    20 ...
    IanJ IanJ August 2014 Hardware
  • 1st interface in 30 years (update)Hi all, Just a wee update to my "1st ZX interface in 30 years" project. Main IC's: 82C55 three 8-bit port I/O (configured for 12 dig in, 12 dig out…

    ... of the three 8-bit ports you want to write to ... it's not full address IO decoding, but I just need ...
    IanJ IanJ August 2014 Hardware
  • Idea for a Horizontal Shoot'em UpI've seen this Taito coin-op. I though would suits perfectly into a Spectrum character based arcade.. in the mould of R-Type, Orion, and others.. the…

    ... />
    with regard to speccy ports.. both green beret n renegade ... /> I also notice phobia and IO aren't on speccy.. but ...
    fog fog September 2014 New game ideas
  • WildPlayer not working with DivMMC Enjoy!Hi I use WildPlayer to play AY music files on my toastrack. It worked great on my DivIDE with EXSDOS, but it don't work on my DivMMC Enjoy. WildPlaye…

    ... I use WildPlayer to play AY music files on my toastrack ... WildPlayer can't find any (AY) files on my SD card ... />
    Yes, wildplayer use IDE ports of original divide/divide plus ... but with different address of ports).
    velesoft velesoft October 2014 Hardware
  • Pics of your Speccy set-up?Had a look and can't seem to find a thread on this. - Be interesting to see pic(s) of everyone's "go-to" Speccy, the one that they use regulary. I'…

    ... programs. Sound: Beeper and one AY. That's what it does ... but You can program the ports to be anything (also Sinclair ... would be nice, the second AY for TurboSound, some better FDD ...
    Yerzmyey Yerzmyey October 2014 Sinclair Miscellaneous
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... device that acts like two AY-3-8912 for turbo sound ... that will listen for the ports 241 and 243 and will ... which was written to the ports 241 and 243:
    [CODE ... /> }
    // add values written into ports #0001 and #0003 and return ...
    ZXMAK ZXMAK January 2015 Emulators
  • Serial comms - duzzit work?Has anyone ever successfully got two 128K Speccies (of any variant) to communicate with each other over the SERIAL / RS232 / MIDI / AUX ports? I can'…

    ... look at to see what ports are being called etc ? midi ... />
    The ports is easy, it's the AY.
    Register 7 ...
    guesser guesser March 2015 Development
  • IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…

    ... between memory mapped ports and actual i/o ports you have to ... penalty associated with memory mapped io in those days and ... was the speed of io devices. Generally io devices were slower than ... points -- easy interfacing for both io and drams. Z80 systems were ...
    Alcoholics Anonymous Alcoholics Anonymous September 2015 Hardware
  • IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…

    ... between memory mapped ports and actual i/o ports you have to ... was the speed of io devices. Generally io devices were slower than ... Alcoholics Anonymous;835114"]Zilog's io scheme was very simple ... -- easy interfacing for both io and drams. Z80 systems were ...
    zub zub September 2015 Hardware
  • Why were there no SN76489-based sound interfaces for the Speccy?I’ve been wondering for a while now why there were no SN76489-based sound interfaces for the Spectrum. Does anyone here have an explanation? There…

    ... of stereo, the AY chips had i/o ports that could be ...
    Alcoholics Anonymous Alcoholics Anonymous October 2015 Hardware
  • Why were there no SN76489-based sound interfaces for the Speccy?I’ve been wondering for a while now why there were no SN76489-based sound interfaces for the Spectrum. Does anyone here have an explanation? There…

    ... the part to buffer io to generate correct timing ... advantage in comparison to the AY.

    [quote ... cycles or so between io instructions to the SN. ... ls374 buffer, and two io decode chips (2x ls138) ... the cheapest interface but io writes are stretched to ...
    Alcoholics Anonymous Alcoholics Anonymous October 2015 Hardware
  • Why were there no SN76489-based sound interfaces for the Speccy?I’ve been wondering for a while now why there were no SN76489-based sound interfaces for the Spectrum. Does anyone here have an explanation? There…

    ... and the part to buffer io to generate correct timing without ... a simpler interface to the ay chip. The SN part does ... advantage in comparison to the AY.
    [/quote]

    Yep ...
    cbmeeks cbmeeks October 2015 Hardware
  • NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…

    ... has the AY sound chip (not assigned to the same ports as ... disk and patched to enable AY soud and joysticks.
    Alcoholics Anonymous Alcoholics Anonymous December 2015 Games
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... fully user configurable.

    AY emulation is also configurable at ... 128k style and Fuller Box ports but as with the joystick ...
    Basher Basher December 2015 Hardware
  • 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 ... two different I/O ports to access the AY-3-8910 registers ...
    GReW GReW March 2016 Development
  • Spectrum 48k upgraded with PI3, with 10 inch LCD, portableheres the vid https://m.youtube.com/watch?v=AcCKNCehZaY the lcd and driver come from china via ebay the driver will take a composite input, …

    ... one of the pi3 usb ports[/quote]

    Can you ... mcdonald

    https://hackaday.io/project/2076-zx-keyboard
    Level20 Level20 April 2016 Hardware
  • SpecNextThis looks interesting... http://www.specnext.com/

    ... interface that adds a second AY chip "in parallel" with ... one, using a unused AY register to switch between them ... actually listening to the same ports, but only one of ... , and another I/O ports, so TS soongs may ... Spectrum that add a second AY + a SAA chip, thus ...
    mcleod_ideafix mcleod_ideafix May 2016 Sinclair Miscellaneous
  • SpecNextThis looks interesting... http://www.specnext.com/

    ... and/or productions that feature AY + SAA music
    --------------------
    There ... the SAA into the same ports that it's on ZXM ...
    Yerzmyey Yerzmyey May 2016 Sinclair Miscellaneous
  • Character Based SpritesHi, I'm working through Jonathan's excellent guide to writing games, and have mastered the animation of single UDGs. Before or move onto Pixel…

    ... the machine inner workings, like ports and addresses that are relevant ... of 8, 16 bit address ports, one for each keyboard half ... more stuff, like Bank switching ports and AY ports for synthesized music.
    RMartins RMartins July 2016 Development
  • DivIDE 57c update and 128 games?Hi all, Lots of questions ahead!! :) I have found my long lost DivIDE 57c. I have put in my Spectrum 128+ and I spotted that it has 2005 Fat…

    ... . That means that paging, AY and other ports are unlocked, so you ...
    Zup Zup October 2016 Hardware
  • 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 ... .

    (***) Not seeing the AY ports 65533 and 49149 in hex ... change. This somewhat simplifies the AY driver code. A person thinking ...
    Alcoholics Anonymous Alcoholics Anonymous October 2016 Development
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