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<1…14151617181920…34>
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ... of ports:[/B]
    port #7F(127) = controll register ... (write only)
    port #1F(31) = gate A ( ... read / write)
    port #3F(63) = gate B ( ... any value to corresponding port then after read from ... />
    All 24 I/O pins of gate A,B ...
    velesoft velesoft August 2013 Hardware
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ... MB02 memory/internal or external I/O ports. DMA chip is ... from ZX ram to ULA port #FE = multicolor in ... />
    [B][U]Port of DMA chip:[/U][/B ... writeable/readable 8bit port.

    PORT ADDRESS #0B(dec ... for description here, but I can later release some ...
    velesoft velesoft August 2013 Hardware
  • DivIDE+ with SpectranetHi all, I've recently bought both a DivIDE+ and Spectranet from RWAP and I was wondering if it's possible to use them both together. I have a 48K+,…

    ... connector with modified signals. As I know, then +5V is on ... devices are usable only as I/O ports (external memory in spectranet ... use only one new writeable port 23(#17) with full 8bit ... ( compatible with Spectranet ).

    I mean that ZX bus is ...
    velesoft velesoft August 2013 Hardware
  • ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…

    ... output port to have the byte just read in a previous I/O ... operation AFTER the previous I/O operation has ended ... actual I/O operation has ended too.

    As an I/O ... operation to a uncontended port uses 4 cycles ...
    mcleod_ideafix mcleod_ideafix September 2013 Hardware
  • ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…

    ... output port to have the byte just read in a previous I/O ... operation AFTER the previous I/O operation has ended ... actual I/O operation has ended too.

    As an I/O ... operation to a uncontended port uses 4 cycles ...
    Mp Mp September 2013 Hardware
  • ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…

    ... simply have your SPI port to work so that ... is ready for the next I/O operation. Using pipelined registers ... 25MHz for the tests I ran while developing the ... register.[/QUOTE]

    I don't think free running ... phase as cpu clock. I built DivMMC with by ...
    superfo superfo September 2013 Hardware
  • Interface 1bisHas anyone on here got a "Interface 1bis": [URL="https://sites.google.com/site/interface1bis/"]https://sites.google.com/site/interface1bis/[/URL] I …

    ... as a multifunctional, programmable I/O device, with own data ... a full-speed USB port
    - Kempston joystick port
    - ... PS/2 mouse port producing Kempston mouse ...
    - SPI expansion port for a (widely available and ...
    Dan Antohi Dan Antohi September 2013 Hardware
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... be pressed.[/QUOTE]
    I can appreciate that. It's ... the Speccy's I/O is on the same port.

    ... with different timing constants, I guess any heuristic for detecting ... /> in a,(0xfe) ; read port 0xfe (11T)
    add a ...
    stephenw32768 stephenw32768 September 2013 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, paging ; 16-bit I/O
    out (scld), a ; set ... subroutine

    defs 1, 255 ; unused locations (common)[/code]
    chev chev October 2013 Development
  • IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…

    ... /> [code]
    2 DEF FN o(f$)=USR 32768
    10 ... /> 20 LET exists=FN o(f$+CHR$ 255)
    30 PRINT "file ... /> ld bc,32765 ;BC=$7FFD, I/O flags address
    ld a ... ) ;(DEFADD) holds start of FN o(f$) arg
    ld de ...
    Battle Bunny Battle Bunny October 2013 Sinclair Basic
  • 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…

    ... clear

    defs 1, 255 ; unused locations (ROM 0)
    ld b, 0xff ; address I/O data
    out (c), e ...
    chev chev November 2013 Development
  • Timex 2068 hi-color / hi-res modes.Hello. I know this is not a Timex forum but since it is a very close relative of the Speccy I thought I'd ask my question here. Does anyone know …

    ... the standard Speccy ULA.[quote]I thought the only reason the ... there were other differences. The I/O is fully decoded on the ... but changes the behaviour of port #FE). Port #FF is used to ... (60Hz in the US).[quote]I don't think software could ...
    chev chev November 2013 Sinclair Miscellaneous
  • Dan Antohi or other Interface 1bis GurusHi Dan I've been getting acquaited with the IF1bis and am starting to appreciate how much more it can do than what Im using it for. I've been using…

    ... these today.

    I didnt realise the new GBL ... 7 of the peripheral status ( port #5F ) is 0 when ... interface doesn't respond to I/O requests, so it cannot ... loaded via the ‘EAR’ port from an audio signal source ... , which I hope you don’t ...
    Dan Antohi Dan Antohi November 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... is abstracted as I work with full bytes I/O.
    [/ ... ]
    Code:
    ---------
    PORT ADRESS DECODING
    hex/dec ... different:

    - port #1F(ZXMMC) for writing can ... :

    - port #1F(ZXMMC) for writing can ...
    bverstee bverstee November 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... IORQ signal on its through port.

    Basically have ... be started on a ZXI port. Once the storage peripheral ... high on its through port while the OUTI/INI ... devices plugged into your through port.

    (There's ... 't an option for I/O devices).
    Winston Winston November 2013 Hardware
  • Why?I'm just wondering why people are here? Why are we working on or using old hardware? Why are some of you putting a lot of effort in upgrading the ha…

    ... are here?[/QUOTE]
    I'm most interested in the ... !
    [/QUOTE]

    I can hook a breadboard full ... to the speccy's expansion port and design circuits on ... and write data to with I/O requests in simple machine ... board with a load of I/O on the end of ...
    guesser guesser December 2013 Sinclair Miscellaneous
  • ROM replacement using 28C256 EEPROMThought I'd share a quick project I knocked up in order to use a 28C256 EEPROM in place of the standard 23128 ROM in the Spectrum. The connections a…

    Ah, didn't consider I/O :(

    A good test ... loading from tape - rapid I/O requests from port FE mixed with ROM ... access. It's not something I ... to work ok.

    I'll give this a go ...
    balford balford December 2013 Hardware
  • Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…

    [QUOTE=Winston;746669](I think IORQGE isn't present ... allows you to use any port addresses of the devices. Problems ... all the address space of I/O ports occurred due to erroneous ...
    Black_Cat Black_Cat January 2014 Hardware
  • Port $28FF. Why 28?Testing floating bus behaviour for ZXUno, I've found that both Cobra and Arkanoid use this specific 16-bit port: $28FF. What is so special about putt…

    Might be an I/O contention workaround.

    [quote=" ... Reference"]The address of the port being accessed is placed on ...
    Hikaru Hikaru February 2014 Hardware
  • We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…

    ... /> Not sure: I would like to have real I/O ports, and be ... .
    Some CPLD with USB port to update the firmware, etc ... .

    I can imagine it would be ...
    bverstee bverstee March 2014 Hardware
  • We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…

    ... ;758457]Not sure: I would like to have real I/O ports, and ... .
    Some CPLD with USB port to update the firmware, etc ... .

    I can imagine it would be ... alltogether.[/QUOTE]

    right I get what you mean now ...
    BiNMaN BiNMaN March 2014 Hardware
  • We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…

    ... sure: I would like to have real I/O ports, ... Some CPLD with USB port to update the firmware, ... QUOTE]

    I have actually had a similar ... IDE Interface, 2xSerial ports, 1xParallel Port);

    A ... set of 6 Triple-Port DRAM ICs, Micron MT43C8129A ...
    The_Bert The_Bert March 2014 Hardware
  • FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…

    ... a string from the serial port in the emulator, and run ... the [I]other[/I] FIFO that the IF1 emulation is [I]receiving[/I] from ... will lose them, as its I/O is not interrupt driven. The ... handler to drive the serial port for both reading and writing ...
    zub zub March 2014 Development
  • Edge Connector InformationHi Everyone, Hope I'm posting in the correct forum. I've recently been playing with an Arduino and got to thinking it would be fab if I could do so…

    ... to respond to an I/O (input or output) port address from the ... /IORQ low ([U]I/O request[/U] - use I/O device not normal memory ... 10mA to 1A.

    [I][B]Mark[/B ...
    1024MAK 1024MAK April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... youtube]

    [quote]I'm hoping that a chip ... with devices that are [I]almost[/I] there. With a bit ... need its own OUT port to control which bank ... away).[/quote]

    I wouldn't use any jumpers ... support doing it all via I/O calls.

    [ ...
    chev chev April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... rhetorical question!

    I don't know HOW or ... me at the time! I just know that they are ... something inside that stops those I/O ports ever being exposed on ... connector. As far as I know it's common to ... on the keyboard relies on port #FE, and so doesn' ...
    joefish joefish April 2014 Hardware
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... would just need an 8 port joystick adapter to play everything ... with a dodgily decoded Kempston port built-in.[/QUOTE]

    Fair point, I forgot about things having built ... boy does that chew through I/O pins quick! 8 Joysticks will ...
    guesser guesser April 2014 Hardware
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... do [I]not[/I] decode A0. Still, I'd recommend full port decoding ... by the ULA. Actually, I'm not sure how much ... /+3 which cannot do I/O reads from peripherals on ... the answer to this. I don't think would ... sure we would want [I]that sort[/I] of attention!
    ...
    zub zub April 2014 Hardware
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... not even bytes!) of port I/O space if we ever become ... one considers SAM Coup? port allocations, although thankfully that ... I'm [I]not[/I] Black_Cat! I was only discussing availability of port space ... , not suggesting that you [I]actually do this[/I]. ...
    zub zub April 2014 Hardware
  • Spectrum +2 grey QuickJoy Joystickhello, i have a QuickJoy Supercharger 3 joystick and when i try to play a game in my spectrum the game crash, i am confused maybe i do something wro…

    ... compatible with my spectrum? how i can test it using a ... piece of basic maybe? where i can find the code?[/QUOTE ... to the number keys. I think port 1 is 6-0 and ... port 2 is 1-5. Probably ... , fire is 5 and 0. I think anyway. :o
    RobeeeJay RobeeeJay May 2014 Hardware
<1…14151617181920…34>

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