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<1…21222324252627…34>
  • ZX Spectrum +3 Query...Hi all, As common, I brought down my Spectrum from the attic the other day to have another stab at getting it running. I knew from the past it was a…

    ... well as CPU's (including Zilog 80's) the down side ...
    Zetr0 Zetr0 March 2011 Hardware
  • 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…

    [QUOTE=Crisis;522111]
    NEXT IS NOT TRUE! shifts are 2 bytes:
    >>>
    and since i am talking about my hobby here, there is another optimisation posible which can lose 2 more byte, with out speed loss.
    Use 'Shift .. Logical' , SLL ...
    chev chev March 2011 Development
  • contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …

    ... .farnell.com/lattice-semiconductor/gal16v8d15lpn/cmos-gal-eepld-16v8-dip20-5 ... /lattice-semiconductor/gal16v8d-25qpn/ic-cmos-gal-eepld-16v8-dip20-5v ...
    velesoft velesoft April 2011 Hardware
  • contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …

    ... .farnell.com/lattice-semiconductor/gal16v8d15lpn/cmos-gal-eepld-16v8-dip20-5 ... /lattice-semiconductor/gal16v8d-25qpn/ic-cmos-gal-eepld-16v8-dip20-5v ...
    BiNMaN BiNMaN April 2011 Hardware
  • Anyone Recommend: Assembly Programming Book(s) for the Spectrum?Hello there my fellow WoS'ers =) I am looking for some ZX Spectrum Assembly programming books (as the title suggests) I have just finished going th…

    ... reference front, there's also Zilog's own book here:

    [url]http://www.zilog.com/docs/z80/um0080.pdf ...
    Matt_B Matt_B April 2011 Sinclair Miscellaneous
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    The CMOS Z80s work fine in a 48K Speccy, I have a couple with one fitted (actually, also a 128K machine) to replace Z80s with bad M1 lines.
    Winston Winston April 2011 Hardware
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... for other (Z80C). Unfortunately from Zilog's website there are several ...
    Zetr0 Zetr0 April 2011 Hardware
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... ?ve got this Z80 CPU: ZILOG - Z84C0010PEG - CI, CPU (Z80) 10MHZ ...
    Mobutu Mobutu April 2011 Hardware
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ...
    16K RAM: 8347
    Zilog Z80A: 8308
    NEC ROM ...
    Spirantho Spirantho April 2011 Sinclair Miscellaneous
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ... 5C102E 8220
    CPU is Zilog, 8213
    16K RAM is ...
    Spirantho Spirantho April 2011 Sinclair Miscellaneous
  • DivIDE questionsHi All, I'm the proud owner of two DivIDE interfaces, that I have just "inherited" from a friend. One of them is the original one and the other one …

    ... did.
    Next people: LOGOUT, ZILOG, DIZZY....

    I can ...
    velesoft velesoft April 2011 Hardware
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... be an SRAM, Z80 a CMOS version, and you might try ... to replace ROM with a *CMOS* EPROM - dunno if that would ...
    RetroTechie RetroTechie April 2011 Hardware
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ... 6C001E-6 8338
    CPU Zilog Z8400A 8329
    ROM NEC ...
    Spirantho Spirantho May 2011 Sinclair Miscellaneous
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... to frequently drive past the Zilog factory where they probably made ...
    Steve Farrell Steve Farrell May 2011 Chit chat
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... to frequently drive past the Zilog factory where they probably made ...
    mel the bell mel the bell May 2011 Chit chat
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ... #001-010556
    Z80: 8213 Zilog
    Modulator: 8223
    16K ...
    Spirantho Spirantho May 2011 Sinclair Miscellaneous
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... .[/QUOTE]

    I think Zilog got the amount of memory ...
    gasman gasman May 2011 Development
  • Official release of new K-MOUSE 2008 interface[url]http://velesoft.speccy.cz/kmturbo2008-cz.htm[/url] This is official release of new K-MOUSE 2008 interface. New layout, design, new schematic. …

    ... .farnell.com/xilinx/xc9572xl-10pcg44c/cmos-isp-cpld-9572-plcc44-3 ...
    velesoft velesoft May 2011 Hardware
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... nec_clean_warm_reset.jpg[/img]

    ZILOG WARM START (clean RESET pulse ... jpg[/img]

    Sometimes (Zilog) The I register keeps its ... ve tried only with the Zilog CPU, using a bounce- ... to 0000h[/B]

    ZILOG COLD START

    [img ...
    mcleod_ideafix mcleod_ideafix June 2011 Emulators
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... a quick look at the ZiLOG Z8400/Z84C00 datasheet and read ...
    Stefano Stefano June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... , three main manuals I use ("Zilog Z80 CPU user's manual ...
    PeterP PeterP June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... sure Zaks is right and Zilog is wrong there: I've ...
    gasman gasman June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... from bit 11 to 12. Zilog's manual and Zaks don ...
    PeterP PeterP June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... from bit 11 to 12. Zilog's manual and Zaks don ...
    ccowley ccowley June 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    [QUOTE=PeterP;544502]Zilog's manual and Zaks don' ...
    Arjun Arjun June 2011 Emulators
  • I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…

    ... /> Oh, and check the "clear CMOS" jumper on the motherboard, if ...
    Marko Marko July 2011 Chit chat
  • I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…

    ... /> Oh, and check the "clear CMOS" jumper on the motherboard, if ...
    ADJB ADJB July 2011 Chit chat
  • ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…

    [QUOTE=Arda;546743]At the end, only the demosceners can make it happen.[/QUOTE]

    Zilog, Baze, Phoenix...? You'd be hard pushed to find anyone who's ever worked on the DivIDE who [i]isn't[/i] a scener!
    gasman gasman July 2011 Development
  • Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…

    You can find what opcodes are legal by looking them up in this document:
    [URL="http://www.zilog.com/docs/z80/um0080.pdf"]Link[/URL]

    Page 51 has the [COLOR="Red"]ld[/COLOR] instructions dealing with 8 bits.
    JamesD JamesD July 2011 Development
  • Sam Coupe clonesAnybody know of any Sam Coupe clones? If they are available, are their any available to buy at the moment? Should of posted this in hardware. Sorry,…

    ... SAM COUPE
    - real Z80CPU (CMOS Z80CPU 20MHz)
    - better compatibility ...
    velesoft velesoft July 2011 Hardware
<1…21222324252627…34>

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