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  • Keyboard reading questionOkay, here's a weird one. I have to elaborate a bit: In the 90s I coded quite a lot of stuff, but I haven't done so in 20 years. There was a hidde…

    ... need to AND it with 31, so as to ignore the ... /> [code]
    ld bc,$f7fe ;port for keys 1-5
    port
    and 31 ;clear the garbage in ...
    Ast_A_Moore Ast_A_Moore March 2018 Assembler
  • Dual joystick interface schematic?Hi! Would anyone have a schematic for a dual joystick interface? Cursor or sinclair would either work. If not, I might try my hand at designing one.…

    ... joystick interfaces decode the IN-31 by checking for the top ... be distinct from Kempston IN-31. This port is selected so as ... players, a fully decoded Fuller port is probably the best option.
    joefish joefish May 2018 Hardware
  • A table of AY frequenciesHi friends, Simple request I hope; does anyone have source for a table of note frequencies on the AY chip as used in the Spectrum 128? I had a loo…

    ... sound chip and the MIDI port can not play note 128 ... /> DEFW $08D6 ; Octave 2, Note 31 - G (49.00 Hz, Ideal ... ( 87.28 Hz, Ideal= 87.31 Hz, Error=-0.04%)
    31 Hz, Ideal=2349.28 Hz ...
    goodboy goodboy January 2019 Development
  • Use more than one fire button with a Divide?Greetings, I have recently purchased a Divide 2k14 that has an integrated joystick port and an activity led for said port, whenever I plug an Amst…

    ... 32 on, on IN 31, the kempston port. It will not work ... 64 or 128 on that port.

    The Kempston that ... natural progression of Kempston's port.
    matalog matalog March 2019 Hardware
  • Kempston Pro Interface - three joysticks at the same timeJust bought myself a Kempston Pro Interface (not arrived yet so I don't have any idea of its innards). The idea was to get an interface that allows o…

    ... Pro but with only one port) and swap its A5 address ... to IN 55 not IN 31 (the game [i]Bomb Munchies ... so instead of the Sinclair port operating keys 6-0 it ...
    joefish joefish December 2019 Hardware
  • Kempston Pro Interface - three joysticks at the same timeJust bought myself a Kempston Pro Interface (not arrived yet so I don't have any idea of its innards). The idea was to get an interface that allows o…

    ... Pro but with only one port) and swap its A5 address ... to IN 55 not IN 31 (the game [i]Bomb Munchies ...
    arttu arttu December 2019 Hardware
  • Pseudoanalogue joysticks for the ZX SpectrumI think that when I got my first joystick back in 1985, this particular type was no longer around or it was extremely difficult to find (if commercia…

    ... -31) which I thought I could wire up to a joystick port ...
    joefish joefish January 2020 Hardware
  • (Fixing) The Swordsman of Kraxis 7The Swordsman of Kraxis 7 ([url="https://worldofspectrum.org/software?id=0013314"]link[/url]) is an arcade adventure, from a type-in book (in BASIC).…

    ... "YOU ARE BY THE SPACE PORT"
    1580 DATA "ENTER THE ... PORT",8,"GO NORTHWARDS",4
    ...
    Timmy Timmy March 2021 Sinclair Basic
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... amp; B
    ; ld a, port
    ; in a, (#FE)< ... do the read of the port
    ; exit if ... 0
    ld c, 31
    call sprite8x8a
    ... , border_right
    ld c, 31
    call sprite8x8a
    ... b, 23
    ld c, 31
    call sprite8x8a
    ...
    Paradigm Shifter Paradigm Shifter June 2022 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... amp; B
    ; ld a, port
    ; in a, (#FE)< ... do the read of the port
    ; exit if ... 0
    ld c, 31
    call sprite8x8a
    ... , border_right
    ld c, 31
    call sprite8x8a
    ... b, 23
    ld c, 31
    call sprite8x8a
    ...
    Paradigm Shifter Paradigm Shifter June 2022 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    It's nearly bedtime for me, so I'll do a code dump. Some of the code (especially the macros at the start) has not been run ever, so don't expect it to work.

    [code]
    ORG #8000

    ; compile time switches, set to 1 to enable< ...
    Paradigm Shifter Paradigm Shifter July 2022 Development
  • Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…

    ... , & B
    ; ld a, port
    ; in a, (#FE)
    port
    ; exit if we ... af, af'
    construct_new_line_data 2, 31
    ret
    .firingleft
    construct_new_line_data 6, 31
    ret
    [/code]
    Paradigm Shifter Paradigm Shifter July 2022 Development
  • Little problem with AYmakeWell, I'm not sure if this post may be here, but, if I'm wrong, I'm sorry. I have a little problem using aymake. I want to convert a 48k's song, w…

    ... copy of AYplay (v 0.31) I can't convert ay ...
    Radical P.C. Radical P.C. April 2001 Emulators
  • Why so few open source Spectrum emulators?A couple of days ago I started to look into converting an existing Spectrum emulator to Pocket PC (mainly the iPaq) and ran into problems directly. T…

    ... .e. make it easy to port to any new platform). It ...
    Anders Anders January 2001 Emulators
  • Interface for PC ZXSee last entry of former TOPIC. I'm working on the interface. Info about it on MISCELLANEOUS Author: Arjun (---.bng.vsnl.net.in) Date: 08-13-01 …

    ... humble Speccy, via the parralel port. The program should be able ... has a bi-directional parallel port.

    I found out ...
    Dr BEEP Dr BEEP November 2001 Games
  • Help making TZX filesHi. I've just found about 10 games that are missing perfect copies and i've tried using maketzx but i can't do it. When i run it it says 'searching …

    ... 'm using windows version 2.31 with the winGUI and am ...
    hugh mann hugh mann November 2001 MIA/STP/SDP
  • Kempston InterfacesWhat Kempston Interfaces featured an additional expansion port on the back, so that you could fit other devices on, such as the Currah microspeech et…

    What Kempston Interfaces featured an additional expansion port on the back, so that you could fit other devices on, such as the Currah microspeech etc?
    Spector Spector January 2002 Sinclair Miscellaneous
  • Kempston Interface/Games cartridge portI recently bought an original Kempston joystick interface which features 3 rather nifty joystick ports (1 kemp, 2 sinclair) and a little slot which i…

    I recently bought an original Kempston joystick interface which features 3 rather nifty joystick ports (1 kemp, 2 sinclair) and a little slot which is marked for a games cartridge... I was wondering if this is the same sort of cart which was used in the ...
    Fuzzbucket Fuzzbucket January 2002 Sinclair Miscellaneous
  • Programing/iterfaceingsorry about my spelling. I have looked for a long time on the internet and havent found anythink about programing the expation port to drive l.e.d.s …

    ... anythink about programing the expation port to drive l.e.d ...
    Mike Mike November 2001 Sinclair Miscellaneous
  • ZX PC InterfaceA couple of weeks ago ( or is it months already? ) I told you to built an interface between Speccie and PC through the parallel port. After making so…

    ... and PC through the parallel port. After making some investigations I ... /> 1x (fe)male connector parallel port (depends on used connector cable ...
    Dr BEEP Dr BEEP October 2001 Hardware
  • RGB output scan rate?Hi, I'm Bruno Florindo. I'm portuguese and I live in USA. I'm trying to find a RGB cable for the ZX Spectrum +2. I can't find the monitor that I had …

    ... has a scan rate of 31.5khz, then a VGA would ...
    Bruno Florindo Bruno Florindo August 2001 Sinclair Miscellaneous
  • Little problem with AYmakeI have a little problem using aymake. I want to convert a 48k's song, which needs to know the values of the registers. I know them, but I don't know…

    ... copy of AYplay (v 0.31) I can't convert ay ...
    Radical P.C. Radical P.C. April 2001 Sinclair Miscellaneous
  • IF1 and IO portsThe Interface used 3 Z80 IO ports to communicate to it s devices #E7- Microdrive data #EF- Status and control #F7- RS232/Network What I'm looking…

    ... .
    Which bits in what port are responsible for what device ...
    john john March 2001 Sinclair Miscellaneous
  • 48 K SpectrumHi. I have 1 off 48 K Spectrum + PSU, Romantic Robot I/F, Opus 3.5 Disk Drive with Printer Port ALL WORKING plus many Games/ Utilities on Tape and D…

    ... .5 Disk Drive with Printer Port ALL WORKING plus many Games ...
    Colin Carter Colin Carter January 2001 Sales
  • Magazine salesHi all, Mags I have for sale are :- Issues 31,30,26,25,23,21,20,103,88,87,86,85,84,73,72 All sensible offers cosidered, you will have to pay posta…

    ... sale are :-

    Issues 31,30,26,25,23,21 ...
    Andrew Andrew January 2001 Sales
<1…14151617181920…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
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  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
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  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
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  • +3 Disk drive motor
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