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<1…20212223242526…34>
  • ZX Spectrum issue 2 has only blue tintsRecently I've bought a 16k speccy and ran into some issues with it. Faulty keyboard, broken caps, no stable frequency, faulty lower RAM chip, it bein…

    ... , press enter when it says 'scroll?' then disconnect the membrane and ... />
    http://www.worldofspectrum.org/hardware/rep6.html
    [quote]Personally ...
    wedwo wedwo August 2015 Hardware
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... first read char bits to register and align them to byte ... also need a scroll function. Here's a scroll up for 6 ...
    tstih tstih August 2015 Development
  • Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…

    ... area I need to vertical scroll is therefore 18 chars wide ... boundary, and decrement a single register only. Thus subtracting 2 from ...
    Einar Saukas Einar Saukas September 2015 Development
  • DiscipleI have got a Disciple Disk Interface, with no manual, software. I have downloaded the PDF Manual from WOS, which says I have to load the operating…

    ... been nice if the I register had been moved to a ... best to figure out the hardware, produce schematics, dump the ROMs ... make guesses about how the hardware works from disassemblies, from the ... of those that understand the hardware — presumably there’s no glory ...
    zub zub 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…

    ... the point, two images that register with each other is a ... some experience without ruining any hardware. At least I now own ...
    zub zub September 2015 Hardware Preservation
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ...

    ;**************************************************
    ;* scroll
    ;**************************************************
    ;* scrolls the hi ... br /> print_64:
    ; register a contains character
    ; ...
    JamesD JamesD September 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…

    ... because the Spectrum’s video hardware has no way of responding ... still true today, with modern hardware designs.

    The ... acts as the [i]status register[/i] when it is read ... a completely unrelated [i]command register[/i] when written. To have ...
    zub zub 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…

    ... potentially queued (or “posted”) PCI register writes by means of a ... something such as a status register, the result of which is ... resent the increased complexity of hardware and software. It’s certainly ...
    zub zub 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…

    ... potentially queued (or “posted”) PCI register writes by means of a ... something such as a status register, the result of which is ... writes because that can affect hardware state. You can't ... resent the increased complexity of hardware and software. It’s certainly ...
    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…

    ... these instructions use the BC register pair (but Zilog only ... instruction as using the C register). When one of these ... ZX computers. And programmers and hardware engineers have since continued to ... the value in the specified register to the output port ...
    1024MAK 1024MAK September 2015 Hardware
  • r-type in development for the sam coupehttp://cookingcircle.co.uk/ we need z80 coders graphics artists and audio this is the amstrad cpc 6128 version: https://www.youtube.com/watc…

    ... />
    If you want to scroll left of right, increase / decrease ... two pixel horizontal scroll. If you want to scroll up or down ... give you pixel vertical scroll. You can scroll as fast as you ... it provides poor man's hardware scrolling - maybe this is even ...
    Stefan Drissen Stefan Drissen September 2015 Development
  • bmp2scrhttps://www.youtube.com/watch?v=zsjTpFR0oYQ converted for the sam coupe by using bmp2scr can anyone help Leszek Daniel Chmielewski ideally it onl…

    ... />
    Could we use a hardware DMA to make this a ... /> hmpr is "high memory page register".

    bit 5 and ... of the colour look up register addressing, "only available in mode ... deep understanding of the sam hardware which we lack.

    1024MAK 1024MAK September 2015 Development
  • No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…

    ... corruption if the Z80 I register is set to point to ... workarounds for these issues in hardware have been found. More coming ...
    zub zub November 2015 Development
  • WANTED Machinecode Routine for Paging in Betadisk TR-DOS v5 ROMI try to build a small MCode-program which writes the TR-DOS-ROM v4 / v5 to RAM adress 40000 an up. It´s working on TR-DOS v4 / Betadisk 48k: C…

    ... as soon as the PC register is pointing at RAM (16384 ... have heard that the real hardware sometimes has a Beta 48 ...
    Jmk Jmk December 2015 Hardware
  • ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…

    ... at $1E00

    Standard hardware is text only 32x22 screen ... [/url]
    for more info. (Scroll down to L1E00).

    dbolli dbolli December 2015 Sinclair Miscellaneous
  • Windows 10 Anyone Got it YetSome of my collegues have been installing or updating their OS to Windows 10 and have been speaking very favorably about it,except the lack of driver…

    ... -2016-if-i-need-change-hardware (from 28th Sept)

    register? I dunno, winsupersite.com and ...
    VincentAC VincentAC December 2015 Chit chat
  • Spectrum +2A floating bus portHi As I discovered in the past, Spectrum +2A (and probably +3) do have floating bus port. But it is not shown on all unused ports, only on some po…

    ... post - I had the R register behaviour in mind :)

    hardware before using this trick.
    balford balford January 2016 Hardware
  • 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…

    ... B register on the upper address lines. It depends on the hardware ...
    RetroTechie RetroTechie January 2016 Development
  • Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…

    ... ]

    Most of the hardware is pretty well described in ... programs while watching memory and register changes.
    GReW GReW January 2016 Games
  • 128K programmingDoes anyone know any good resources on assembly programming for the 128? All I'm after is an "idiot's-getting-started-guide" on how to utilise the…

    ... the hardware latch set to the correct value (the register you set ... to configure the memory map like this), the hardware ...
    1024MAK 1024MAK February 2016 Development
  • Reading PC text files from BASIC!I was playing around with my DivMMC Enjoy! and managed to work out that it's dead easy to load PC .TXT files into the Speccy - I've got them viewable…

    ... with the extra hardware.
    As for the "scroll?", my sofa is ...
    textvoyage textvoyage March 2016 Sinclair Basic
  • A new emulator is in townHello, I'd like to announce a new ZX Emulator, it's Spectacol (https://github.com/bog-dan-ro/spectacol) a free (GPLv3+) emulator which currently t…

    ... new version, the Android controls scroll off screen if the screen ... the screen is touched, they scroll back up.

    This ... needs a second press to register what you want (e.g ...
    Antiriad2097 Antiriad2097 March 2016 Emulators
  • A new emulator is in townHello, I'd like to announce a new ZX Emulator, it's Spectacol (https://github.com/bog-dan-ro/spectacol) a free (GPLv3+) emulator which currently t…

    ... new version, the Android controls scroll off screen if the screen ... the screen is touched, they scroll back up.

    This ... needs a second press to register what you want (e.g ...
    bog_dan_ro bog_dan_ro March 2016 Emulators
  • Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…

    ... to load it into a register from memory and then perform ... directly without using an extra register. Having said that, and looking ...
    Alcoholics Anonymous Alcoholics Anonymous April 2016 Development
  • Manic Miner ported to Atari 800XLYep, they finally ported it :) http://atariage.com/forums/topic/252067-manic-miner-released/

    ... />
    The graphics hardware was designed for pong style ... graphics are controlled via hardware registers, the display isn ... br /> Essentially there are four hardware sprites (with a single colour ... and change the palette register every scanline; made even ...
    GReW GReW May 2016 Brand new software
  • Manic Miner ported to Atari 800XLYep, they finally ported it :) http://atariage.com/forums/topic/252067-manic-miner-released/

    ... list and change the palette register every scanline; made even more ... that there aren't any hardware interrupts to tell you when ...
    Hikaru Hikaru May 2016 Brand new software
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... FORCE the I and R register to become ZERO.
    The ... R register is incremented after each instruction ... is easy to detect in hardware and control in software, without ... 't change, even after R register increment/overflow, which can be ...
    RMartins RMartins June 2016 Hardware
  • P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…

    ... , and with some extra weird, register munching it might go to ... /> Looked at Shadow Warriors, and scroll area is limited to a ... .
    Looked at Uridium, and scroll area is limited to 26x16 ...
    RMartins RMartins June 2016 Development
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... is used to LOCK selection register (6 bit flip-flop) of ... to serially pump/populate selection register with data.

    This ... to just load the bank register in one go, by using ... /> This would take the same hardware, but would make running control ...
    RMartins RMartins June 2016 Hardware
  • Consolidating forum categoriesI posted this elsewhere, but it should probably go here: [quote="Rorthron;857978"]As an aside, can we consolidate the various topics on New WoS in…

    ... Releases
    - Emulators
    HARDWARE
    - Hardware
    DEVELOPMENT
    - Sinclair ... br /> PRESERVATION
    - Software
    - Hardware
    - Documentation
    - Infoseek
    scroll straight to the end.
    Rorthron Rorthron July 2016 WoS/Forum Issues
<1…20212223242526…34>

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