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<1…15161718192021…34>
  • 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…

    ... RS232/MIDI ports as generic I/O ports supported via software. So ... enables you to use one port as RS232, but the PLAY ... MIDI out on the same port. Likewise 128 BASIC supports a ... it. It uses the AY I/O to provide two joystick ports ...
    chev chev May 2014 Hardware
  • 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…

    ... one 8 bit input/output port. In these machines, four lines ... . Keypad/Aux is the IN port, RS232/MIDI is the OUT ... port. But the TS2068 uses an AY-3-8910 with two I/O ... ports. I'm not sure how ...
    chev chev May 2014 Hardware
  • 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…

    ... Keypad/Aux is the IN port, RS232/MIDI is the OUT ... port. But the TS2068 uses an AY-3-8910 with two I/O ... ports. I'm not sure how ... components that will interfere, I believe that any of the ... a schematic diagram available, I can take a look.
    1024MAK 1024MAK May 2014 Hardware
  • Cheetah SWEET TALKERJust got a bundle of hardware including one of these. I gather its a speech synthesizer in the mould of the currah microspeech. How do i test if it…

    ... ]

    Sadly, I don't own the device ... . It could be, I just based all my ... interfaces. MAME has a port of this same code ... at 0x38.
    Memory mapped I/O: Read 0x1000 = Get status ... LRQ line).
    Memory mapped I/O: Write 0x1000 = Allophone (Bit ...
    Jmk Jmk May 2014 Hardware
  • RTC module for DIVIDE[IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_top.jpg[/IMG] [IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_bottom.jpg[/IMG] [IMG…

    ... two jumpers select address of I/O ports of RTC chip. Is ... used only one kempston joystick port #1F with full 8bit address ... for communication with joypads
    - port #1F is read only and ... #1F(dec 31) = kempston joy port
    SCF ;joypad not detected ...
    velesoft velesoft July 2014 Hardware
  • Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…

    ... devices/computers contain parallel port based on chip 8255 ... gates. First gate on port #1F is often connect ... B]11111

    I guess it doesn't matter ... with DIVIDE + RTC module is I/O space very free...
    ... to RTC chip
    Port #03 can be changed via ...
    velesoft velesoft August 2014 Brand new software
  • Favourite Speccy PheripheralsWhich are your favourite Speccy pheripherals that you have owned/used? Mine were: 1) Quickshot II Turbo (with Kempston interface) Q, A, O, P and SP…

    ... jump)
    3. A General I/O interface of some sort. Not ... to the +3 Printer Port and a joystick port. Had lots of ...
    GReW GReW November 2014 Hardware
  • Speccy Vs Amstrad CPC Vs C64I hope no one minds me posting this here as well as in the announcements section. I'll delete it if there is a problem. It's childish fun but can I …

    ... you could even consider [I]necessary[/I] is a joystick interface ... would also have been [i]nice[/i] for a standard ... - it had some spare I/O lines. Every C64 drive had ... it had the serial port to connect the lead rather ... to happen, but I'm glad I still got one ...
    Fizza Fizza December 2014 Games
  • +3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…

    ... 's machine code is accessing I/O ports and ether not getting ... certainly clumsily writes to the port that maps ram on a ...
    RobeeeJay RobeeeJay January 2015 Hardware
  • 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…

    ... Spectra? How about a pure I/O device (no shared memory ... if (!iorqge)
    {
    // write port is already handled by another ... if (!iorqge)
    {
    // write port is already handled by another ...
    ZXMAK ZXMAK January 2015 Emulators
  • Ziloghino - Arduino like Z80 systemHi, I found this board on Kickstarter, the Ziloghuino. It's an Arduino like Z80 system extensible with hardware shields. With some effort maybe s…

    ... , memory board, I / O Board and Board programmer) The I/O board can be ... stackable to other 3 I/O unit[/quote]
    So all ... certainly possible to make a [i]less[/i] reliable cardplane, just use ... Sinclair used for the expansion port and don't clamp the ...
    RetroTechie RetroTechie July 2015 Hardware
  • maths help 'JSW'JET SET WILLY uses a lookup table to play the opening tune (Moonlight Sonata) this is the table [code] 34299 DEFB 81,60,51,81,60,51,81,60,51,81,…

    ... ROM... ergh.

    I know my way around Z80 ... , but I'm still learning the quirks ... the Spectrum, and I find the I/O to be pretty counter ... to it, but I think if I ever get round to ... />
    Obviously that final 255 is just there to say ...
    Zoep Zoep August 2015 Sinclair Basic
  • Recommend-me-do - memory card devicesSo, both myself (with a +3 that has a dodgy drive) and my friend (with a +2) are looking at the various options for loading from memory card. What…

    [quote="zPasi;834630"]I know '1bis' has only ... quote]
    Guess not, I peeked the IF1bis shadow rom ... .

    But, when I look the 128rom0 disassembly, the ... the interface does respond to I/O request, but its RAM ... from (machine code) using port access?
    zPasi zPasi September 2015 Hardware
  • Recommend-me-do - memory card devicesSo, both myself (with a +3 that has a dodgy drive) and my friend (with a +2) are looking at the various options for loading from memory card. What…

    ... the microcontroller through the SPI port, very much like the ... 834635"]
    But, when I look the 128rom0 disassembly, the ... work from (machine code) using port access?
    [/quote]
    ... I/O device, communicating with the Spectrum's CPU over port ...
    Dan Antohi Dan Antohi September 2015 Hardware
  • Preservation prioritiesHi all! Firstly, thanks to the WoS staff for setting this category up. Secondly, thanks to you for all for backing the idea, and in anticipation o…

    ... It’s a [i]very[/i] useful thing to ... floating around. I believe there [i]are[/i] some clones ... of the Speccy, the port I/O that you perform might ... />
    There [i]are[/i] 128K clones but far fewer ... br /> [quote="guesser;834976"]I'm not convinced we need ...
    zub zub September 2015 Hardware Preservation
  • 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…

    ... /> Yep, although the Spectrum’s I/O contention makes it clear that ... for memory access as for I/O access.
    [/quote]

    I/O access under PCI, though, ... because a read from that port might return unrelated information.
    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…

    ... />
    [quote="namtip;51296"]
    I understand PEEK and POKE, but ... 65536 using bytes 0 to 255, but how is that different ... between what's considered an I/O device and what's considered ...
    Winston Winston September 2015 Hardware
  • The best ZX Spectrum emulatorsIt's been suggested we add a sticky thread where people can recommend their favourite emulators. A couple of rules. 1. Don't just nomina…

    ... , although I suppose I can understand this misconception. You [i]can[/i] set ... You can set breakpoints on port I/O (“br p re 0xc002:0x4000 ... ”, to catch I/O access that would cause a ... pretty much it, and I expect [i]some[/i] emulators have debuggers ...
    zub zub October 2015 Emulators
  • Interface 1 - RS232 question.I am thinking about doing some Spectrum stuff based around the RS232 port used on the Interface 1. Has anyone had any joy doing this with an emulator…

    ... machines instead, with the serial port pins coming off the sound ... the I/O lines are reversed in the Aux port, so I presume that ...
    joefish joefish November 2015 Development
  • Interface 1 - RS232 question.I am thinking about doing some Spectrum stuff based around the RS232 port used on the Interface 1. Has anyone had any joy doing this with an emulator…

    ... And the I/O lines are reversed in the Aux port, so I presume ... ports over as the serial port goes:
    [code]
    ... /> [/code]
    whereas the keypad port goes:
    [code]
    ground ... were splicing two bits together (i.e. old lightgun cables)
    guesser guesser November 2015 Development
  • A doubt about IN and OUTIN (and OUT) can use bc to define a 16 bit port to be read or write, when used as in r,(c) or out (c),r. Also, if you use in a,(n) or out (n),a yo…

    ... /> For the other I/O instructions that use C as port number (including ... 16 bits I/O address or still an 8 bits I/O address with ... another 8 bits that [i]can[/i] be ... upper address lines in some I/O operations. Afaik most Z80-based ...
    RetroTechie RetroTechie January 2016 Development
  • JOYSTICKS... All buttons are 'fire'WHY ??? When consoles arrived in full force - there were at least two buttons - one for jump, one for fire... yet no matter how many buttons an old …

    ... joysticks/pads in either joystick port, although it wasn't officially ... needed to use the mouse I/O routines to check the fire ...
    GReW GReW January 2016 Hardware
  • Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …

    I was wondering if you have tested that all address lines are intact. Add-ons/expansions that use I/O ports could cause problems with the ULA keyboard port if an address line has a high resistance fault.

    [b][i]Mark[/i][/b]
    1024MAK 1024MAK February 2016 Hardware
  • Kempston joystick - port MSB value?In a situation where let's say the kempston is being polled like this: LD BC,NN1F: IN A,(C), what is the 'correct' value of NN? 1. 00 2. FF 3. S…

    ... in ZX can slowdown some I/O ports with A15=0 + A14 ... =0. Best way is reading port xx1F after interrupt because in ...
    velesoft velesoft February 2016 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…

    ... for MSX (Z80 based AY I think), will those .asm files ... . The MSX uses two different I/O ports to access the AY ... .

    The MSX uses port $7C for Register Select and ... the upper byte of the port address, while the Spectrum does ...
    GReW GReW March 2016 Development
  • Reading sequential key pressesI am thinking about writing a quick game and have an idea that requires me to read alternate key presses. I’m thinking along the lines of Daley Thomp…

    ... in fact checking "y","u","i","o" and "p".

    On ... 42 DEC, since each keyboard port only has a half row ... , since you start at zero, I believe that is what you ...
    RMartins RMartins July 2016 Development
  • IBM made Sinclair computers, surely not?Unsure if this has been discussed before so apologies for being thick but a curious line from this book, page 73, states that from 1983 Sinclair prod…

    ... , solid steel case, all the I/O done by discrete logic rather ... requirements: BASIC in ROM, cassette port, beeper sound, and (with a ...
    John Elliott John Elliott December 2016 Sinclair Miscellaneous
  • The ideal USB "emulation" joystick. I used to be happy using emulation with a Dual Shock 3 Playstation joystick . It works and has loads of control buttons that can be configured with…

    ... ://www.techiehq.net/threads/game-port-pci-i-o-card-without-sound-adaptor ... /"]https://techiehq.net/threads/game-port-pci-i-o-card-without-sound-adaptor ...
    harriusherbartio harriusherbartio February 2017 Hardware
  • Purchasing Advice for an ignorant AmericanHello, I am a retro computer enthusiast who lives in the United States. I am currently looking into importing a model from the UK, and would like whi…

    I think eBay can answer many ... .

    3 - The joystick port adaptors are cheap enough; usually ... - We have this word 'b[i]o[/i]ll[i]o[/i]cks' in Britain. Not ... a problem with a hard 'o' sound rather than an 'owe ...
    joefish joefish February 2017 Sinclair Miscellaneous
<1…15161718192021…34>

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