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Search Again :: Adv Search 1000 results in 0.041s
<1234567…34>
  • Fastest way of reading from EAR portI'm trying to work out the fastest way of reading data from the EAR port and assembling the bits into a byte. I came up with this code: IN A, (C) ; …

    ... fastest way of reading data from the EAR port and assembling the ... code:
    IN A, (C) ; read port FFFE, 12 cycles
    EAR is set, 4 cycles
    i love the z80s i love the z80s April 2017 Development
  • Reading EAR input under emulation...Can either Spin or SpecEmu emulate being able to read audio from the EAR socket of the Spectrum? I'd like to be able to hook some audio to the micro…

    ... emulate being able to read audio from the EAR socket of the Spectrum ... as if it was being read from the EAR socket on the emulated ...
    bobs bobs September 2010 Emulators
  • Emulators that can read from real +3 disk?Are there any emulators that can read/write and run games from a real +3 disk drive plugged into a FDD header? (like samdisk and cpcdiskxp can)

    Are there any emulators that can read/write and run games from a real +3 disk drive plugged into a FDD header? (like samdisk and cpcdiskxp can)
    wootlanter wootlanter February 2019 Emulators
  • checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…

    ... =$ffff and a file header read from tape, for each byte of ... the same it proceeds to read the file data, otherwise it ... goes back to read another header.
    [code]
    Battle Bunny Battle Bunny January 2013 Games
  • Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…

    ... ***** (whichever address is being read) from 191 to... something else. I ... at least try to load from tape in 48K mode ... deck plays music, the EAR socket works (even if it ... the other for the EAR and MIC sockets on ... plug I put into the EAR socket, red or white, ...
    The Mighty Dopethrone The Mighty Dopethrone February 2017 Hardware
  • WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…

    ... FE is the ear input bit. The value read from this port is ... not trivial, as can be seen from ... bit 6 as read by an IN from port FE. The ... 5 and 7 as read by INning from port #FE are ... !

    If you read from a port that activates both ...
    Dr BEEP Dr BEEP November 2001 Sales
  • IN Port FE bit 6 confusionI know I've got this wrong. Tapes load fine but it all feels messy. Currently my emulator does this: Sets bit 6 of the result to 0. If (and only if…

    ... as if they're reading from port FE?
    [/quote]
    read from port +7FFE
    IN A,(+FE) i.e. BREAK and EAR ... the 7F referred to the EAR as well as the Break ... /reset based on EAR everytime there is an IN from FE no ...
    Unique Unique March 2005 Emulators
  • Looking for rare TZX blocksBy rare I mean out of the hundreds of TZX I have non of the following blocks exist. I need to test my loading/handling/saving code. Are there any TZX…

    ... send me a WAV recording from a Spectrum that shows the ... .

    If you read from the EAR port without a cassette playing ...
    Fraser Fraser April 2005 Emulators
  • Investronica Inves Spectrum +Hi, Has anyone here ever heard of the Investronica Inves Spectrum +? This site [url="http://www.silicium.org/uk/sinclair/inves.htm"]http://www.sili…

    ... the ROM, so when you read from 0-16383 you get a ... value from ROM, but when you write ... ULA may also mix both EAR and MIC bit to produce ...
    Metalbrain Metalbrain June 2005 Sinclair Miscellaneous
  • Trying to experience nostalgia!! Mp3s needed!!!I've been trying to get audio files (mp3 or wav) to work on my real old sinclair 48k. I've tried making them from my old tapes of which I have many, …

    ... from tap, run this program on your spectrum. The program will read ... the data from EAR and simultaneously write it ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Games
  • I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…

    ... is correct for both reading from and writing to ports.[/QUOTE ... read memory. ULA puts on the bus proper data (from keyboard and EAR ... cycle. ULA is about to read from memory. It doesn't stop ...
    brian-82 brian-82 February 2007 Development
  • PianosIts true there is no such thing as a free (or cheap) piano. There was a guy a few doors up from me who sold his piano to us for 40. It's in very goo…

    ... guy a few doors up from me who sold his ... piano well requires a good ear and a lot of ... you listen for 'beats' - read up on even temprament (which ... C. IIRC, to tune from ear, you tune fifths until you ... bit). Still can't sight read though - not that reading ...
    Winston Winston May 2008 Chit chat
  • Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…

    ... plug. It takes power supply from the rear bus. Haven't ... loading it using the "Load from Audio Source" option. Once in ... the next instruction executed, already from the main ROM, begins at ... , bit 7.
    * FFh. Read-only. "EAR" port, bit 7. Decoded bit ...
    mcleod_ideafix mcleod_ideafix August 2011 Hardware
  • Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …

    ... 0xfe is the EAR input bit. The value read from this port is ... not trivial, as can be seen from ... , [COLOR="Red"]and have no EAR input[/COLOR].

    If ...
    Z80user Z80user March 2012 Emulators
  • Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …

    ... (say, two OR gates from a 74HCT32 chip, or IORQGE ... CPU wants to read from the keyboard and/or EAR), your interrupt routine ... , as your microcontroller will suffer from some latency)

    ... is going to be read (normally, one bit from A8-A15 will ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... to read from address 254 ('IN $FE') for the keyboard or EAR/MIC ... going low on a port read, meaning all even addresses are ... didn't block external hardware from responding, so external hardware could ... A4, so you can then read it by 'IN $EF' instead ...
    joefish joefish May 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…

    ... edge against a
    ;; byte read from port 0xFE; so 0x40 for ... bitmask; e: bitmask for reading EAR
    and e ; look ... at EAR bit
    cp d ; ...
    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…

    ... the screen, making a read from the EAR port every 64 bytes (largely ... load the screen pixels, polls EAR until it hits a sync ...
    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…

    ... and 0x41 ; look only at EAR/BREAK bits (7T)
    ... ; read port (12T)
    add a,a ; shift EAR bit ... br /> rla ; place EAR bit in carry (4T)
    read from port 0xFE to ...
    stephenw32768 stephenw32768 August 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…

    ... The border colours from now
    ... ' register apart
    from a 'marker' bit.
    Read from port +7FFE.
    IN A,(+FE) i.e. BREAK & EAR ...
    jamorski jamorski October 2013 Development
  • 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…

    ... if it's going to read joysticks by pulsing them with ... taken, though. The situation from a software point of view ... (254 dec)

    This read only register is mainly used ... bit.
    Bit 6 EAR serial input from EAR of cassette recorder.
    zub zub April 2014 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…

    ... [/i] instruction, it must also read from memory to fetch the that ... are also bits for the ear and mic, and five keyboard ... to probe. Usually, you’d read from port $7ffe (01111111 11111110) for ... , bit 6 is the EAR input, for reading from cassette tape.
    zub zub September 2015 Hardware
  • Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…

    ... channel = red RCA = LOAD tone from EAR

    That way, at ... plug I need from the EAR socket.[/quote]
    Err, read all the ...
    1024MAK 1024MAK February 2017 Hardware
  • Loading Schemes > 1-bit per 2 edgesHi Guys, I'm just having another look at loading schemes again (a subject that interests me). Does anyone know if there any loading schemes t…

    ... loader to read from port 254, it could load from the standard EAR jack ... just as well.

    As we have learned from ... OTLA, the Spectrum is capable of reading data from the ... ULA’s EAR pin at very ...
    Ast_A_Moore Ast_A_Moore August 2019 Games
  • New Tape and Tape Recorders for the 21st centuryHi SpecChums, I don't know if this has come to anyone's attention (Analogue/Real Hardware-philes at least) https://www.languedocliving.com/french…

    I saw one somewhere on utoob with a sub memory stick port that sent the audio read from the sub device... pity the micro command interface can't b modified for a stereo ear(which is the mic) socket
    rogerjowett1 rogerjowett1 January 2020 Sinclair Miscellaneous
  • TZX file format descriptionI figured what this meant after a few minutes: The length of a block is given in the following format: Numbers in square brackets [] mean that the v…

    ... that the value must be read from the offset in the brackets ... means: get number (a word) from offset 02 and add 0A ... that the value must be read from the offset positions given in ... word, there are two numbers) from offsets 02 and 03. The ...
    Fraser Fraser February 2003 MIA/STP/SDP
  • New! CSW.dll for windows based emulators!Hi all, There now exists a new library of routines for windows emulators which allows access to both csw and csw2 files. It's written in pure x86 as…

    ... emulator will be able to read from seperate csw files simultaneously, and ...
    Dunny Dunny July 2004 Emulators
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... an unexpanded Spectrum, the byte read from the data bus in IM ... .
    * M4: 3 tstates: read low byte from the interrupt vector.
    read an opcode from the data bus an ... /> * M2: 3 tstates: read low byte of 'nnnn' from data bus.
    Philip Kendall Philip Kendall July 2004 Development
  • Library files for tape/snap loading?Has anyone done library routines (preferably C or Delphi or both) to read from/write to TAP, TZX, SNA, Z80, SLT and perhaps other file formats? 'Two…

    Has anyone done library routines (preferably C or Delphi or both) to read from/write to TAP, TZX, SNA, Z80, SLT and perhaps other file formats?

    'Twould save me (and others) reinventing the wheel...
    robert@fm robert@fm November 2004 Development
<1234567…34>

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