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<1234567…34>
  • Help :) (FLAGS)ok a question about the 8080 so if anybody can help me. do the flags only change for the accumulator or are they affected for the other registers a…

    ok a question about the 8080 so if anybody can help me.


    do the flags only change for the accumulator or are they affected for the other registers as well

    because if you inc b the flags are affected....why?
    ASH-II ASH-II November 2010 Sinclair Miscellaneous
  • Help pleeease "Proving Emulator OpCode flags are correct"So I had a cunning plan... I wanted to write a test harness for Emulators that could "prove" that all opcode flags were correct. I wanted something m…

    ... could "prove" that all opcode flags were correct. I wanted something ...
    Korinel Korinel April 2012 Emulators
  • Mastering flagsI'm little lost when different flags are set/reset after logic operations, and what conditions must be met. For example, [code] ld a, MODE…

    ... 'm little lost when different flags are set/reset after logic ...
    Bedazzle Bedazzle September 2016 Development
  • How are LAST-K and FLAGS set on a Real Spectrum?Hi, I'm writing a Spectrum emulator and I've got Horace and the Spiders working (with the wrong colours and no sound) but when I boot into ROM non…

    ... ROM uses bit 5 of FLAGS and LAST-K to work ... far as I can tell, FLAGS and LAST-K aren't ...
    garethadams garethadams January 2019 Emulators
  • Shadow of the UnicornI've written a program to run Shadow of the Unicorn on a +2A/+3. Is there anywhere it can be put to be available to anyone wanting to play the game?…

    ... need instructions to set the flags register to 0. It works ...
    Anonymous Anonymous December 2001 Games
  • Deduggers in emulatorsI've used several emulators with build-in debuggers, and now I want to share my opinion. Debugger in Spectaculator 6.0 is great! The interface is nic…

    ... information about Z80 registers and flags. But it lucks some information ...
    kmatveev kmatveev February 2004 Emulators
  • Wanted Software to Swap for Rom Carts ;)Wot I have for grabs is 4 Complete ROM Carts which I will swap for my wants below Horace [url="http://www.cornishdavey.dsl.pipex.com/4.jpg"]http://w…

    ... /> Strike Attack 2
    World Flags

    Mirrorsoft
    Ancient ...
    Cornishdavey:)) Cornishdavey:)) February 2004 Wanted
  • I think I have some titles not in your archive, but am afraid to ask....I don't venture in here much. I don'd understand it, last time I thought I had some I didn't.... and I am embarrsed to try again... Anyway I have; …

    ... />
    &

    World Flags publsihed by Micro Mart Software ...
    thx1138 thx1138 March 2004 MIA/STP/SDP
  • How to program Machine Code on a PC, and then run it on a speccy?Well, I've been looking into MC a bit more deeply recently - I reckon I could get my head round MC now. Back when I was a teenager, I couldn't see th…

    ... a bit more about registers, flags and load etc and am ...
    jonrach73 jonrach73 March 2004 Development
  • Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…

    ... the issue of the 'undocumented' flags... I plan on implementing that ...
    GOC GOC May 2004 Emulators
  • games offered to new homehi,clearing out my loft and have some spectrum games all original for sale open to sensible offers here is a list with condition.Any questions feel f…

    ... map and re-useable vinyl flags,some of these are on ...
    newbie1 newbie1 July 2004 Sales
  • Re Unread threads on WOSInfo on read threads and posts are based on cookies, right? When I sit on my stationary and reading the WOS forum, I log in and read the stuff I hav…

    ... bit awkward to include read-flags in the posts, right?
    ekoman ekoman July 2004 Sinclair Miscellaneous
  • How to detect 48k modeHow can you detect if a 128k machine is in 48k mode (from an emulation point of view, not via BASIC or machine code)? Checking the current rom? But …

    ... 4 of the system variable FLAGS? But could this be overwritten ...
    Unique Unique March 2005 Emulators
  • ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…

    ... for sound
    All undocumented flags and opcodes emulated.
    Very ...
    Dunny Dunny June 2005 Emulators
  • ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…

    ... for sound
    All undocumented flags and opcodes emulated.
    Very ...
    Dunny Dunny June 2005 Sinclair Basic
  • Match DayThe Match Day I played used to play, showed up the flags of some national squads before the tournament mode started...but the one I downloaded on the…

    ... to play, showed up the flags of some national squads before ... the forum doesnt have the flags and the entrance music is ...
    VanTammen VanTammen January 2006 Games
  • Need this games nameIm searching for an old game I played when I was a kid but I can?t remember the name. In this game you held an olympic torch and had the job to run a…

    ... world and raise all the flags. You had to find various ...
    Tralli Tralli January 2006 Games
  • Zilog Z80 ManualI'm looking at the zilog manual at the moment. (A pdf one), whilst trying to implement a basic emu, just for learning. Are there known to be many e…

    ... i can't find what flags need to be changed for ... how to determine what other flags need changing and why (i ...
    yetifoot yetifoot February 2006 Emulators
  • MEMPTR finally crackedThis post is mainly for emulator developers. As you may be well know there is a misterious internal register in Z80 CPU (MEMPTR) which value is set …

    ... 3 and 5 of the Flags register after the instruction BIT ...
    Vladimir Kladov Vladimir Kladov March 2006 Emulators
  • SimCoupe 1.0 released[size=-2](for those of you that don't read CSS)[/size] SimCoupe, the SAM Coup? emulator, has been updated to version 1.0. This major release adds ma…

    ... DAA to support all undocumented flags
    - Fixed ROM memory accesses ...
    obo obo July 2006 Emulators
  • Banned AgainHmph. I got banned from WOS again last night. I think I know why - I use website-watcher to monitor when a page has been updated. It's a handy prog…

    ... a short space of time flags up a "mirroring" thing (despite ...
    icabod icabod August 2006 Chit chat
  • Displaying registersHi I'm currently writing a Spectrum emulator, bacically to learn and see if I can =) I would like to test my functions before I continue, is there an…

    ... what way the Accumulator and flags change?

    Cheers
    Jmc Jmc February 2007 Emulators
  • Speccy map of the UKHi, I decided to play about with Google Maps to see what it could do, and decided to come up with a Speccy map of the UK. The idea is to put flags…

    ... . The idea is to put flags on significant Speccy places.
    mjwilson mjwilson February 2007 Sinclair Miscellaneous
  • Hello from America!!!Hi there! Well, I've now been in Arkansas for a week now, and I would like to post a few things that have made me chuckle while I've been here: 1) T…

    ... ) The sheer number of US flags out and about. You can ... of St. George's Cross flags when there's a world ...
    The Starglider The Starglider February 2007 Chit chat
  • New Spectrum emulator for DS[url]http://zxds.raxoft.cz/[/url] [quote]Features already implemented: * Solid Z80 core - possible bugs aside, the Z80 emulation is as complete…

    ... modifying the documented and undocumented flags as it should (the only ... which should modify the undocumented flags 5 and 3 differently - just ...
    StuBruise StuBruise March 2007 Emulators
  • TZX 1.20 block 0x18 questionHi All I am in touch with G?nter Woigk the author of Zxsp emulator for mac os X and we both wondering something about block 0x18 (Sorry if that ques…

    ... 0x18 has a field called flags at offset 0x0A to indicate ...
    patrick delvenne patrick delvenne April 2007 Emulators
  • Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…

    ... , Mark Woodmass)
    [*] Fix undocumented flags after BIT n,(IX+d ...
    Fred Fred July 2007 Emulators
  • Easy Compare On 2 Byte Register?e.g. HL, BC, DE Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far a…

    e.g. HL, BC, DE
    Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far as I can tell.
    carlinski carlinski September 2007 Development
  • Help with a gameHi I hoping that one of you will be able to help me out with the name of a game all I remember about it was it came in a box the size of a dvd case …

    ... out map and stick on flags to put on the map
    wolfpac wolfpac December 2007 Games
  • Ski Star: how do you finish?I've just been playing Ski Star and can't work out how you actually finish the game. I went through the starting gate, worked through the flags, went…

    ... starting gate, worked through the flags, went through another gate but ... there weren't any more flags or gates.

    Does ...
    neoncherry neoncherry January 2008 Games
<1234567…34>

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Related Threads

  • Help :) (FLAGS)ok a question about the 8080 so if anybody can help me.<br /> <br /> <br /> do the flags only change for the accumulator or are they affected for the…
  • Help pleeease "Proving Emulator OpCode flags are correct"So I had a cunning plan... I wanted to write a test harness for Emulators that could "prove" that all opcode flags were correct. I wanted something m…
  • SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
  • norton flags wos as 'suspect'Norton security gives me a 'suspect' message when I'm on wos, looked into it and got this report.<br /> <br /> [img]http://i62.tinypic.com/2rhpky9.…
  • Mastering flagsI'm little lost when different flags are set/reset after logic operations, and what conditions must be met.<br /> <br /> For example,<br /> [code]…
  • Step through assembly language whilst viewing registers and flagsHello,<br /> <br /> Is there anything available which would let me step through an assembler listing and see how each register (and flag) changes a…
  • How are LAST-K and FLAGS set on a Real Spectrum?Hi,<br /> <br /> I'm writing a Spectrum emulator and I've got Horace and the Spiders working (with the wrong colours and no sound) but when I boot …

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