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Search Again :: Adv Search 855 results in 0.001s
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  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... its through port while the OUTI/INI instructions are run to ...
    Winston Winston November 2013 Hardware
  • Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…

    ... nor hard, I meant if Zilog did it :) And they did ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Sinclair Miscellaneous
  • IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…

    ... not officially recognised/supported by Zilog there are no official opcodes ...
    David Jones David Jones December 2013 Development
  • IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…

    ... not officially recognised/supported by Zilog there are no official opcodes ...
    chev chev December 2013 Development
  • Assembly code auto optimiserFor my Finders Keepers Plus project I'm considering writing an Assembly code auto optimiser. Way back when I wrote the original FK I considered optim…

    ... : This information is taken from Zilog's own Z80 User manual ... [url]http://www.zilog.com/appnotes_download.php?FromPage=DocTree ...
    The_Bert The_Bert December 2013 Development
  • Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…

    ... possible, and using the official Zilog mnemonics for all opcodes where ... a perfectly standard, well documented Zilog mnemonic :(
    ccowley ccowley December 2013 Announcements
  • "Weird" Spectrum +3Hi folks. I've just dicovered that one of my +3's has an Issue 1 board, with all the mods that are mentioned on guesser's website - the other has (w…

    ... ), and bears the new(ish) Zilog code "Z840004PSC" so there's ...
    The_Bert The_Bert December 2013 Sinclair Miscellaneous
  • New CPU and Spectranet oddity.I have no reason to suspect this problem is due to a fault/poor design of the Spectranet, but understanding what it does at system initialisation may…

    ... -7, 8446). With the original Zilog Z80A processor I had no ...
    jimre jimre January 2014 Hardware
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... nn" instruction was added by Zilog to the z380
    // Here ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    ... D780C's or a modern Zilog Z840008, I have no more ... with an SGS or old Zilog Z80, the PlusDlite won't ...
    bverstee bverstee February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    Replaced Zilog Z0840004PSC Dated 8705 with Zilog Z8400APS Dated 8627 and its working!
    Macc Macc February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    Tried another Zilog Z80 (the only other one ...
    Macc Macc February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    [QUOTE=Macc;751251]Tried another Zilog Z80 (the only other one ...
    bverstee bverstee February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    ... the differences are between the Zilog and NEC Z80's because ...
    Macc Macc February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    ... the differences are between the Zilog and NEC Z80's because ...
    Macc Macc February 2014 Hardware
  • z80 less than and greater thanI am writing a keyboard routine where the pressed key code number is held in A. I only want to action the number key presses 1 to 9 (codes 49-57) so …

    ... try to stick to standard Zilog mnemonics, in this case "cp ... 's assembler. Learning the correct Zilog mnemonics will save a lot ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • Has anybody ever thought about......Life? You know....life? Reminiscing about old times, playing on the Spectrum with Renegade, Legend Of Kage, Punchy, Disco Dan...the list is endless…

    ... 48KB's courtesy of a Zilog Z80 :)

    The excitement ...
    Hercules Hercules February 2014 Chit chat
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... with good and fast sw. Zilog is no longer a main ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... ... chips) chips coming. That 'other Zilog chip' is a bit of ... , I'll take out the Zilog monster chip as BCH and ...
    Amplitude Amplitude February 2014 Hardware
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... is a beast of a Zilog-not-CPU chip.
    Amplitude Amplitude March 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    [QUOTE]Tried another Zilog Z80 (the only other one ...
    Basher Basher March 2014 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…

    ... 8632

    Z80:
    Zilog Z8400APS
    8622

    MatGubbins MatGubbins March 2014 Sinclair Miscellaneous
  • New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …

    ... (ULA: 7K010E-5 8612, CPU: Zilog Z8400APS 8609)
    [/U][/B ...
    balford balford March 2014 Emulators
  • We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…

    ... -bit, Z80-compatible CPU, the Zilog Z80380 with 32-bit internal ...
    The_Bert The_Bert March 2014 Hardware
  • New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …

    ... , but I have seen a Zilog CPU reporting 33 while it ...
    Patrik Rak Patrik Rak March 2014 Emulators
  • New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …

    ... : 7K010E-5 8612, CPU: Zilog Z8400APS 8609)
    [/U][/B ... 70908 YES 34
    Zilog Z8400APS 8622 70908 YES 36 ...
    Zilog Z0840004PSC 8640 70908 YES 36 ...
    Zilog Z84C0008PEG 1234 70908 YES 36 ...
    balford balford March 2014 Emulators
  • New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …

    ... D780C-2 CPU, works with Zilog CPU though.[/QUOTE]

    Zilog CPUs reported values one T ...
    Patrik Rak Patrik Rak March 2014 Emulators
  • JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…

    ... SP. It's just that Zilog chose to use [b]JP ...
    Jonathan Harston Jonathan Harston March 2014 Development
  • JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…

    ... 't at least considered by Zilog.

    Note that when ... bug, and that the reason Zilog didn't document instructions acting ...
    zub zub March 2014 Development
  • RLD - zero-flag resultI have very rarely found need to use the RLD instruction, well, actually just this once, but everything I can find on it says that the zero-flag is s…

    ... ? ;)

    [url]http://www.zilog.com/force_download.php?filepath=YUhSMGNEb3ZMM2QzZHk1NmFXeHZaeTVqYjIwdlpHOWpjeTk2T0RBdmRXMHdNRGd3TG5Ca1pnPT0 ...
    Stefan Drissen Stefan Drissen March 2014 Development
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