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Search Again :: Adv Search 1000 results in 0.032s
<1…13141516171819…34>
  • +3e ROMs v1.28 releasedAfter a slight delay (ahem), I have updated the +3e ROMs to v1.28. Amongst other things, this release provides: [LIST] [*]Completely rewritten (and …

    ... the software (for the 8 bit interface) seems corrupt when opened ... it for the wrong 8 bit interface?) my old v1.11 ... the half of the data that 8-bit interfaces don't read ...
    glancaster glancaster August 2006 Hardware
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... .
    * Exactly one other 8-bit register from B, C, D ... looped again even though the EAR bit has changed - in other words ... , it's not checking the ear bit and so it's not ...
    Marko Marko August 2006 Emulators
  • RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …

    ... RAM doesn't test every bit of RAM, just every address ... dodgy at (say) address 65368 bit 6, everything will work fine until ...
    DEATH DEATH September 2006 Hardware
  • Not so BRIGHTOk, on the Spectrum I'm a crayon man so I don't know much about the coding. If I create a graphic in, say, SevenUp or TommyGun and the graphic is not…

    ... ]

    Yes, just set bit 6 of the attribute bytes. Or ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Development
  • Not so BRIGHTOk, on the Spectrum I'm a crayon man so I don't know much about the coding. If I create a graphic in, say, SevenUp or TommyGun and the graphic is not…

    ... =Alcoholics Anonymous]Yes, just set bit 6 of the attribute bytes. Or ...
    Metalbrain Metalbrain October 2006 Development
  • Election of the new maintainer of the TZX formatHi folks, the topic says all, let the discussion begin :) Luca

    ... to see an explanation of EAR bit in $FE port, or even ...
    Black Hole Black Hole December 2006 Emulators
  • free wine...or a scam? had this sent through email today. (from a work collegue) [url]http://www.stormhoek.com/webcoupon123.pdf[/url] genuine or fake - you…

    ... . In fact it's a bit like Willy Wonka's factory ... own beer quite a bit.

    6%, and drinkable, is the ...
    thx1138 thx1138 December 2006 Chit chat
  • Developing the Spectrum ROMI'm working on some Z80 assembler for a Z80-based single board computer that I'm building. For the things that don't poke my hardware, I'm using a Sp…

    ... of LEDs on the address/data bus and control lines of the ...
    Alcoholics Anonymous Alcoholics Anonymous December 2006 Development
  • Empty rubber spectrum caseDoes anyone know where can i get one or two empty rubber spectrum cases in good condition? I know there is ebay but i couldn't find anyone selling ju…

    ... stray capacitence buggers up the data bus or something.

    Anyway ...
    DEATH DEATH January 2007 Hardware
  • I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…

    ... during _writing into ULA_. (because data from Z80 is valid during ... be right as Z80 probes data bus during T3 (fourth) state. So ... , i/o peripherals put data on the data bus anywhere from T2 forward ... ensures that the data driven on the bus has stabilized and the ...
    Alcoholics Anonymous Alcoholics Anonymous February 2007 Development
  • Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …

    ... between 8000h and FFFFh have bit 6 high irrespective of what you ... 48K model. This suggests that bit 6 is the problem (value 64 ...
    BloodBaz BloodBaz March 2007 Wanted
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... sound it makes is a bit irritating, needs a lower pitched ... eating into the map data quite a bit, but with the added ...
    FrankT FrankT March 2007 Development
  • problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…

    ... if at least there is bus activity and it's getting ... on the address lines and data bus, check for activity on M1 ...
    Winston Winston April 2007 Hardware
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    ... latch the contents of the data bus. (Alternately, you can cascade two ... latch the contents of the data bus - 74HC logic will meet this ...
    Winston Winston April 2007 Hardware
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    ... latch the contents of the data bus. (Alternately, you can cascade two ... latch the contents of the data bus - 74HC logic will meet this ...
    Dr BEEP Dr BEEP April 2007 Hardware
  • Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…

    ... /> bit 2 - "1" turns on 128k compatibility mode. Bits 7 and 6 ... #7FFD port get locked up and bit 5 returns ... mHz turbo).
    bit 5 - not used
    bit 6 - 384x304 video mode ... .
    bit 7 - not used ...
    Sonic Sonic May 2007 Hardware
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... on what's on the data bus, which is both why you ...
    Philip Kendall Philip Kendall May 2007 Emulators
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... say "converts" is a bit of a strong term - ... read. Instead of bit 5 overflowing straight into bit 6, the counter ... is wired up such that when bit ... overflows, it overflows into bit 9 instead (so the ... reset to 0 and bit 9 increments in the ...
    Winston Winston May 2007 Development
  • Cannon BubbleHello! I would really like to transffer this game ( [url]http://cezgs.computeremuzone.com/eng/card.php?id=14[/url] ) to my REAL +3 disk drive. Becau…

    ... $60E2, then dump the following data to disk (address followed by ... ,$4000 pages 1, 3, 4, 6 and 7

    Use ... USR 24870
    50 DATA 1,3,4,6,7

    StuBruise StuBruise June 2007 Games
  • Spectrum Diagnostics Board - 25th Anniversary projectWell, I said I'd try and get something online about this by today, and I have indeed done so. This web page still needs finishing off (in particular,…

    ... clock, M1 line, address and data bus lines. This can give you ...
    Winston Winston June 2007 Hardware
  • Cannon BubbleHello! I would really like to transffer this game ( [url]http://cezgs.computeremuzone.com/eng/card.php?id=14[/url] ) to my REAL +3 disk drive. Becau…

    ... $60E2, then dump the following data to disk (address followed by ... ,$4000 pages 1, 3, 4, 6 and 7

    Use ... USR 24870
    50 DATA 1,3,4,6,7

    DEATH DEATH June 2007 Games
  • Making your own joystick interfaceJust spied the diagram for the kempston joystick interface in the docs section. For someone who has only made up cables, what is involved in constru…

    ... sided boards which carry address/data bus signals (lots and lots of ...
    Winston Winston June 2007 Hardware
  • UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.

    ... arm for one to fix Bit 6 on one of my Spectrums ...
    BloodBaz BloodBaz June 2007 Hardware
  • Making your own joystick interfaceJust spied the diagram for the kempston joystick interface in the docs section. For someone who has only made up cables, what is involved in constru…

    ... .e. logic high enable, and data latched on the falling edge ... for each but a multiplexed data bus).

    Incidentally, work was ...
    Winston Winston June 2007 Hardware
  • 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…

    ... to know a little bit about binary arithmetic. Namely ... shifting caused the most significant bit (the '7') to ... 0 already there which represents bit 0, not necessarily a ... zero bits in bits 6..0. Bit 7 of the result ... we'll be looking at bit 6.

    When ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Notation questionI wasn't quite sure where to put this post, so anyone's welcome to move it whereever may be more appropriate. So I'm reading about Z80 interrupts he…

    ... *not* 'off'. The address and data bus (and many of the signal ... output (such as the address bus) this means the signal is ... is very important - consider a data bus with several devices on it ... other devices can use the bus.

    An output is ...
    Winston Winston June 2007 Development
  • 8-bit or 16-bit registers?I'm playing around with writing a Speccy emulator for mobile Java at the moment. I did a quick and dirty port of Qaop, which does run but at less tha…

    ... , of course. LDIR copies data in 8-bit chunks, while reading and ... writing via 16-bit registers and using a 16 ... . Is that 8 or 16-bit? As a more obvious case ...
    Philip Kendall Philip Kendall June 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…

    ... what would happen if the "ear" bit is flipped during game execution ...
    Digital Prawn Digital Prawn July 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…

    ... changed to 255 if the ear bit was flipped (maybe on some ... . BEEP of effectively masking the ear bit off, and then reading successivly ... IN statement needed, and no 'ear bit' concerns. (Theres a one-liner ... keypresses, which can save a bit if space is tight.
    Digital Prawn Digital Prawn July 2007 Development
  • B: drive dont workHi all, I went to Maplin today got myself a DIY lead the one with the proper 34 way edge connector for the Spectrum+3 other end 34 way to floppy driv…

    ... />
    [code]
    2 4 6 8 10 12 14 16 ... /> 5 READ DATA 22 GND
    ______________
    6 D4 23 DRIVE ...
    __________
    13 WRITE DATA 30 GND

    14 ...
    DEATH DEATH July 2007 Hardware
<1…13141516171819…34>

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