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Search Again :: Adv Search 1000 results in 0.014s
<1…18192021222324…34>
  • Your very own biving doarb!!If only I had a million quid :( [URL]http://cgi.ebay.co.uk/1986-Biving-Doarb-useful-for-biving_W0QQitemZ320150889117QQihZ011QQcategoryZ109201QQssPa…

    ... />
    Final Value fees are:- 5.25%of the initial ?29.99 ... ), plus 3.25% of the initial ?30.00 - ?599.99 (?18 ... .75% of the remaining closing value balance. Which for ?1m equate ...
    murtceps murtceps August 2007 Chit chat
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... rather vague hypothesis that the Z80 perhaps samples the IRQ 3 ... as decisive evidence. AFAIK, the Z80 samples the INTREQ during the ... ). Sigh.

    [QUOTE]The Z80 is first put under contention ... sources I quoted in my initial post.

    [QUOTE][I ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... rather vague hypothesis that the Z80 perhaps samples the IRQ 3 ... as decisive evidence. AFAIK, the Z80 samples the INTREQ during the ... 14336 as this "pixel output" value.

    The assumption has ...
    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... seems to be writing the value out after T1 (to avoid ... when the value appears on the bus according to the Z80 datasheets ... . So it is likely the value is indeed sampled at T3 ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... character (8 pixels) wide. The initial call to sp1_CreateSpr() creates a ... " consisting of ink only, the value obtained from the gfx_playerColour[] array ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... don't know how the initial investigations were done, but that ... explanations are degenerate from the Z80's point of view as ...
    Philip Kendall Philip Kendall September 2007 Emulators
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... /> 2. DIM t(2) assigns value zero by default, so you ... post where you remove the 'initial worm printing' section all together ...
    Digital Prawn Digital Prawn September 2007 Development
  • Leave AY Chip alone guysWould you have a go at a child with down syndrome? No, thought not. AY has Asberge Syndrome, it's a form of Autism - think of that please before y…

    ... learned programming using ZX Basic, Z80 assembly language, BBC BASIC and ... skills translate to all languages. Z80 and 6502 assembler meant when ... work. There is still tremendous value to be gained by a ... young programmer by writing Z80 assembly language on a ...
    Winston Winston September 2007 Chit chat
  • Getting Lifeguard to workI'm struggling with this Muliface utility to find infinite lives cheats. I can get the program to load up, and when I load a game and press the red b…

    ... order to get the value to be displayed). Then ... , so obviously the initial display value needs to be amended ... where it got the initial display value from. So, I ... game. Success -- the initial lives display is now 3 ... changed the actual starting value but at least I ...
    StuBruise StuBruise September 2007 Sinclair Miscellaneous
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    OTHELLO (initial version) Explanation of variables and ... , input co-ordinates, and setup value 'm' for the attempted player ...
    Digital Prawn Digital Prawn September 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... -random number generator's seed value. As you probably know, the ... a formula using the "seed" value (the last random number generated ... available memory segments in the z80's address space. (Note: some ... () to get memory; because the z80's address space is so ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Development
  • Trying to create NMI, whats this switch?Hi, I have been reading a book Z80 Applications, and I am trying to create a simple device for creating a NMI. Here is a schematic: [url]http://www…

    ... much any implementation of a Z80 based system, you're going ... needn't be a small value - especially when using CMOS gates ...
    Winston Winston October 2007 Hardware
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... as follows (savings are an initial estimate):-

    (a) Save ... have named the snapshot memorym1.z80.

    Cheers, DP
    Digital Prawn Digital Prawn October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... the first POKE value to 7, and eliminate the initial "INK 7 ...
    Digital Prawn Digital Prawn October 2007 Development
  • Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…

    ... blank screen. You control the initial x,y coord, the maximum ... registers used for parameters / return value, appropriate registers being reserved, and ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... . I have (1) removed the initial check as you stated, and ... is probably just one POKE value I have wrong somewhere!
    Digital Prawn Digital Prawn October 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... experience of writing articles, I value any further constructive criticisms he ... !

    But, hopefully these initial issues have now been suitably ...
    Digital Prawn Digital Prawn October 2007 Development
  • Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…

    ... presses 1-5 on the initial menu. Key 0 is needed ... /> However, there are a few z80 m/c routines within the ...
    Digital Prawn Digital Prawn October 2007 Games
  • What was a Z80 computer capable of ?I have always wondered, and maybe the techy people on here could answer, with what you know about the Z80 processor, was the spectrum hampered by the…

    ... the Spectrum is that the Z80 does everything except transfer the ... display. On the ZX81 the Z80 did this too.
    A ... a memory location with the value 65 and a letter 'A ... .
    As a single banked Z80 machine, the ZX Spectrum design ...
    Geoff Geoff November 2007 Hardware
  • ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…

    ... is a maximal refresh period value.
    So that's why ... dram) for 192*224 = 43008 z80 cycles in a frame. That ... leaves about 70000 - 43008 = 26992 z80 cycles = 7.7ms when no ...
    Alcoholics Anonymous Alcoholics Anonymous November 2007 Development
  • How does the Z80 communicate with hardware?How does the Spectrum (or Z80) interact with other hardware devices? I think devices can communicate with the CPU through interrupts, but how can the…

    ... the I/O functions. The Z80 has a selection of opcodes ... somewhere like [URL="http://www.z80.info"]z80.info[/URL] for that ... ), A", which will send the value of the A register out ...
    icabod icabod November 2007 Development
  • Starting on machine code - BASIC first?Howdy. If I wanted to start learning machine code for the speccy, from scratch, would you recommend I learn BASIC first or is it entirely possible to…

    ... AND, OR and so in Z80 assembly?
    [/QUOTE]

    value. Sometimes I see decimal numbers ... 's important and not the value. Now you could use binary ...
    Alcoholics Anonymous Alcoholics Anonymous November 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... by using it. In the initial release of the game, the ... the hole card's face value. As you know, this is ... , rather than the card's value, causing PRINT OVER 1... to ...
    Digital Prawn Digital Prawn November 2007 Development
  • Where shall I start to look ?I got hold of a faulty 48k, Issue 6. It displays a picture like shown below: [URL]http://www.gjelberg.no/miscpics/speccyfault.jpg[/URL] Some of the…

    ... one. If it were the Z80 or the ROM that was ... not returning a consistent attribute value for a given character position ...
    csmith csmith December 2007 Hardware
  • Random variablesI made some programs in BASIC and saved into z80 files and I realized that they have some problems with ramdom variables. For example, I programmed …

    ... /> every time I run the z80 file.

    Any reason ... />
    Snapshots save the SEED value which is what the next ...
    Alcoholics Anonymous Alcoholics Anonymous December 2007 Sinclair Basic
  • another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)

    ... byte is very good for Z80 handling the screen. This way ... "sprites" on screen. And the initial address calculation in bitmap and ... the time, not the mighty Z80 until very late models.
    TVzombie TVzombie January 2008 Games
  • Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…

    ... - clearly people do see the value in IDEs more than I ... a graphic editor and a Z80 code editor can usefully talk ...
    gasman gasman January 2008 Development
  • Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…

    ... - clearly people do see the value in IDEs more than I ... a graphic editor and a Z80 code editor can usefully talk ...
    Kiwi Kiwi January 2008 Development
  • Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…

    ... return code.

    I value this in an IDE extremely ... home, a bit of PHP, Z80 asm, and more Perl. Whatever ...
    Winston Winston January 2008 Development
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