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Search Again :: Adv Search 1000 results in 0.076s
<1…17181920212223…34>
  • 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…

    ... ,0x7f ; read port 0x7ffe (7T)
    in a,(0xfe) ... ; (11T)
    and 0x41 ; look only at EAR ... border ; put border colour in accumulator
    or ...
    stephenw32768 stephenw32768 August 2013 Development
  • 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…

    ... br /> It turns out IN F,(C) doesn't ... /> Z flag - set if port reads zero - checked by Z ... 5 flag - bit 5 of port - can not be checked< ... parity of all bits of port - checked by PO / PE ... on bit 6 being EAR, and bits 0-5 ... key press on that port will also break the ...
    GoingDigital GoingDigital August 2013 Development
  • 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…

    ... the flags to capture the EAR bit - wish I'd ... devote BC to the port address in order to avoid reinitializing ... upper byte of the port address is irrelevant because ... 'm only looking at the EAR bit.

    ... you're only using the EAR bit.

    [quote ...
    stephenw32768 stephenw32768 August 2013 Development
  • Border art viewerRecently, we were working with diver/4d on border art. The idea was to push the techniques of drawing on the border to the limit and to see, how much…

    ... /> I did some tests in the Fuse too. If my ... I also have a small EAR-based test which I do ... code relies upon the incomplete port decoding (specifically, I use ... , as it is emulated in Fuse, does not seem ... able to support Timex in this software without limiting ...
    introspec introspec September 2013 Development
  • 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…

    ... loaders and routines running in tight loops waiting for ... It's a pain in the neck that all the ... /O is on the same port.

    Given that ... in a,(0xfe) ; read port 0xfe (11T)
    add a,a ; shift EAR ...
    stephenw32768 stephenw32768 September 2013 Development
  • 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…

    ... /> in a,(0xfe) ; read port 0xfe (11T)
    add a,a ; shift EAR ...
    Jon Needle Jon Needle September 2013 Development
  • What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…

    ... IN A,(+FE) Make an initial read of port ... /> - the present EAR state.)
    CP A ... port +7FFE.
    IN A,(+FE) i.e. BREAK & EAR ...
    jamorski jamorski October 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…

    ... /> out (ula), a ; write port
    ex af, af' ;'restore ... push hl ; return address
    in a, (ula) ; read ULA< ...
    and %00100000 ; keep EAR bit
    or red ; red ... ld c, a ; store A in C
    and %00000111 ; ...
    chev chev October 2013 Development
  • 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…

    ... interface is in the 'ON' state. While in the 'OFF ... version 3a.

    In case you meant the 'Inactive ... FF, though using the interface in the 'Inactive' mode is ... t loaded via the ‘EAR’ port from an audio signal ... that the interface is in its ‘Active’ mode ...
    Dan Antohi Dan Antohi November 2013 Hardware
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... mine and Alcoholic's posts in the SP1 doc thread[/QUOTE ... __CALLEE__ designator to be ignored in the actual function "int __CALLEE__ ... /reference/48kreference.htm#PortFE"]ULA Port 0xfe reference entry[/URL] I ... different values for bit 4 (EAR) then a click will be ...
    szeliga szeliga November 2013 Development
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... reference/48kreference.htm#PortFE"]ULA Port 0xfe reference entry[/URL] ... different values for bit 4 (EAR) then a click will ... committed in there now :- zx_border reads the beeper state from port $ ... fe, then mixes in the border colour ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... telephonic assistance. I am also in South Africa, so the telephone ... a joystick to theIF1bis joystick port
    7. Connect the IF1bis ... Spectrum while keeping the joystick in the right position. The interface ... an audio cable from the ear connections
    2. I ...
    Pierre Pierre March 2014 Hardware
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... telephonic assistance. I am also in South Africa, so the telephone ... a joystick to theIF1bis joystick port
    7. Connect the IF1bis ... Spectrum while keeping the joystick in the right position. The interface ... an audio cable from the ear connections
    2. I ...
    Pierre Pierre 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…

    ... one considers SAM Coup? port allocations, although thankfully that ... /> Bit 6 EAR serial input from EAR of cassette recorder ... and just swap the port address in software? Since one lot ... only discussing availability of port space, not suggesting that ...
    zub zub April 2014 Hardware
  • Loading games from a old PC to a speccy?Hi all I've got an old Pentium 1 200Mhz PC which I'm sure could load games to my speccy seeing as my tape drive is knackered... I remember when w…

    ... them to the right location in RAM

    ... the z80 command IN should be used to recieve ... PC to the Joystick port? (or EAR might work)
    ... an emulator that loads tapes in under a second.
    < ... bit 6 of port 0xFE using the IN command to ...
    slenkar slenkar July 2014 Sinclair Miscellaneous
  • +2 Force Loading from external tapeHi all My tape player is shot and now thanks to my frustration not functioning what so ever i see there is a Tape/Audio port on the back of the spec…

    Fail... Well with that in mind i went ahead ... [/img]

    Audio port removed and the PCB join ... cut so that the "ear" part of the phono ... JPG[/img]

    Audio port soldered back onto the board ... a wire which links the "ear" part of the audio ...
    dreamscape dreamscape July 2014 Sinclair Miscellaneous
  • Please explain Spectrum FPGA-clones to meI've been using the great ZXDS-emulator on the DS XL so far, which is great. But I kinda missed toying around with hardware. I've tried bidding on a …

    ... /> Think of a code written in VHDL or Verilog like the ... representation of a schematic diagram, in which you describe small black ... descriptioon).

    Describing things in a HDL like Verilog is ... depending upon the I/O port read */
    if ((adress_bus & ...
    mcleod_ideafix mcleod_ideafix November 2014 Hardware
  • 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'…

    ... 16 is the I/O port.

    The register is ... contains at least one error in the above) indicates the following ... like the ear/mic confusion these are backwards. In other words the ...
    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…

    ... are also bits for the ear and mic, and five keyboard ... /> In [i]all[/i] of these ports, bit 6 is the EAR ... port $fb (1111 1011), but also port $f3 (1111 0011). Any port that in ... different address bus line in its [i]port decoding[/i]. The problem ...
    zub zub September 2015 Hardware
  • Monkey Island On Speccy...I would love to see Monkey Island on the speccy...think it can be done...not as much detail or graphics...but along the same story lines.... What ot…

    ... conversion programs out there written in QBasic that could be ... somebody already said, leadership - nobody in their right mind wants to ... of being jumped by Mickey ear wearing lawyers)...

    - ... the data from the CPC port might be easier (and less ...
    kgmcneil kgmcneil October 2015 New game ideas
  • Jiiira's Sparrow LITEHi All, Just for info .. :) big eprom, cheap 32KB ram and etc. i don't know specification .. :) https://youtu.be/NbI7E1aebrM modern speccy .. …

    ... one and put Harlequin logic in there? Original ULA probably means ... 2x 74LS157's (near mic/ear) could have been removed from ... think.
    * Small signal transistor in metal can (lower left corner ... not gold-plated.
    * Joystick port(s) or SD card would ...
    RetroTechie RetroTechie December 2015 Hardware
  • 19, S Davis snooker & light gunGot these things in different packages I've ordered over ebay. The light gun came with the +2a, but I have no idea whatsover what to use it with. Do…

    ... ..

    both go in the serial port BUT you have to ... connector, but with 9V batery +EAR connector instead? How would it ...
    Hood Hood January 2016 Games
  • Recommend Cassette PlayerI've not needed to buy one for about 30 years so can anyone recommend a new cassette recorder and source please? Do they even make them anymore?

    ... DIN port just these socket types :- MIC. : REMO.: AUX.: and EAR. On ... the other side there are switches to toggle MIC in ...
    harriusherbartio harriusherbartio April 2016 Hardware
  • Recommend Cassette PlayerI've not needed to buy one for about 30 years so can anyone recommend a new cassette recorder and source please? Do they even make them anymore?

    ... DIN port just these socket types :- MIC. : REMO.: AUX.: and EAR. On ... the other side there are switches to toggle MIC in ...
    Your Spec-chum Your Spec-chum April 2016 Hardware
  • Suggestion for ZX Uno improvementsI really enjoy my ZX Uno, however, I do see some improvements that I think could be made to the Uno. 1) When you press CTRL-ALT-Backspace or when …

    ... It is only implemented in the core ZX Spectrum ... Spectrum +2 are included in the latest versions. Anyway ... is included in the BIOS, so the EAR updates can ... have given them unofficially. In the ZX-One crowdfunding ... was only VGA, the port will start being VGA ...
    antoniovillena antoniovillena June 2016 Hardware
  • Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…

    ... Set border and pulse edge (Port FE is xxxEMBBB)
    0xEA76 ... return adress (ROM)
    0xEAEA IN A,(FE) ; Sample Keyboard ... )
    0xEAEC RRA ; Shift Ear bit (ROM)
    0xEAED AND ...
    lfaria lfaria August 2016 MIA/STP/SDP
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... /> I'll have the boards in a few weeks. Lets see ... be a problem in the placement of the joystick port if it ... joystick might rub against the Ear/Mic plugs/leads/cable. I ... few mm) and placed leads in the places that they should ...
    MatGubbins MatGubbins September 2016 Hardware
  • Spectrum 48k won't start any software but passes all RAM testsI have a rubber key 48k which will not start any software - it appears to work perfectly right up until the end of the tape and the program would sta…

    ... /> Sometimes one of the diodes in the ear / sound out circuit can ... all the resistors and diodes in the ear, mic and sound section ... diodes will be my first port of call. It plays sound ... going to try replacing the Ear jack if the resistors/diodes ...
    britain4 britain4 October 2016 Hardware
<1…17181920212223…34>

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