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<1234567…34>
  • anyone got a nice clear pic of a Speccy keyboard?Im making a spectrum keyboard keyword reference widget for the OS X dashboard, basicly at the mo it's just gonna be a picture of a spectrum keyboard …

    ... having trouble finding a nice clear, reasonably high res picture to ...
    Sharopolis Sharopolis May 2005 Sinclair Miscellaneous
  • CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…

    ... of the things that a CLEAR command does RESTORE the DATA ... program:
    [CODE]
    10 CLEAR 32767
    20 READ a ... first command it sees is CLEAR 32767, which should do a ... isn't restored by the CLEAR command.
    trellis trellis September 2006 Sinclair Basic
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... code routine which will
    clear the first 20 rows of ... in memory), which can
    clear the top third, two thirds ... F

    The 'thirds' clear method is as follows :
    This runs extremely quickly, the clear appears to
    happen instantaneoulsy ...
    bobbyjaykid bobbyjaykid July 2007 Development
  • Fastest way to clear a screen.We haven't had an optimizing fun for some time, so let's have some: What's the fastest way to clear a screen (i.e., filling the 6912 bytes at 16384 w…

    ... 's the fastest way to clear a screen (i.e., filling ...
    Patrik Rak Patrik Rak February 2009 Development
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... 16KB bank but its not clear cut. The greatest concern with ... is 00001000, and as the lowest bit is the rightermost bit ...
    Womble Womble August 2010 Hardware
  • Lowest safe ramtop for various disk systems ?Can someone give info about lowest safe ramtop for various disk systems ?

    Can someone give info about lowest safe ramtop for various disk systems ?
    Fikee Fikee October 2010 Development
  • ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…

    ... the stuff that's relatively clear: when M1 and A15 are ... enabled or disabled by the lowest address line when IOREQ + WRITE ...
    Thommy Thommy September 2011 Hardware
  • ZX-7 instruction (BEEPER 8-channels editor)ZX7 was the most powerful ZX Spectrum 48K music editor end engine since 1988 to 2011 (when OCTODE appeared). [url]http://www.worldofspectrum.org/inf…

    ... . What could it be.
    CLEAR - no suprises here either.
    lowest octave and the one above ... : 2 basses simultanously in the lowest octave and the one above ...
    Mister Beep Mister Beep December 2011 Development
  • Quick question about CLEAR...Hi Folks, I should know the answer to this but I wanted to make sure I understand totally. If I execute a CLEAR then I know it lowers RAMTOP to the…

    ... totally. If I execute a CLEAR then I know it lowers ... +1 e.g.

    CLEAR 60000

    means the ...
    Paddy Coleman Paddy Coleman January 2012 Sinclair Basic
  • BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…

    ... to 31) and the 3 lowest bits in HRC will indicate ... to execute:
    *
    * 10 CLEAR VAL "32767"
    * 20 LOAD ...
    Einar Saukas Einar Saukas August 2012 Development
  • .tapein load crashes if no CLEAR performed first(!)Hi Guys, Can anyone explain the following as it has be stumped: I came across an unexpected crash today when loading in a 16K block of code at 8000…

    ... the following:
    [code] 10 CLEAR 32767
    20 LOAD "" CODE ... don't bother performing the CLEAR during development as I keep ... well clear of RAMTOP.

    However ... />
    If I do the CLEAR 32767 before the LOAD "" CODE ...
    BloodBaz BloodBaz August 2012 Hardware
  • LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…

    ... token with only
    ;; the lowest four bits set, i.e ... /> ;;
    ;; The routine leaves carry clear
    .getlength:
    ld a ... counter (4T)
    and a ; clear carry (4T)
    .getlength_nocarry:
    stephenw32768 stephenw32768 October 2013 Development
  • Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…

    I want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is possible. Can anyone advise on how to call this command or some similar routine to clear the screen?
    Mr Millside Mr Millside November 2013 Development
  • Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…

    ... I replicate what the basic clear command does in z80? Do ... point instead and do a clear command and then randomize back ...
    Speccy_James Speccy_James February 2014 Development
  • Tape Clear Out!Right, I'm having a clear out of all the tapes I don't want, I'll upload some cover tapes and big box lists in a bit, but to kick things off, here is…

    Right, I'm having a clear out of all the tapes ...
    smogit smogit March 2014 Sales
  • clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…

    ... on the best way to clear a window on the screen ... .

    I want to clear a 25x24 char section of ...
    Atari_Jetman Atari_Jetman October 2014 Development
  • 48K Issue 2 Spectrum showing exactly 16KI've acquired an issue 2 and it quickly became clear that only 16K of memory is available. I've read that some early 48K Spectrums with malfunctionin…

    ... 2 and it quickly became clear that only 16K of memory ... has been disabled? If the lowest upper RAM IC is faulty ...
    LoonyJetman LoonyJetman August 2016 Hardware
  • Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…

    ... was wondering fastest way to clear the screen.

    I ...
    ivanb303 ivanb303 December 2016 Assembler
  • A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…

    ... is aligned)
    xor a ;clear A and Carry
    ex ... third,
    and 7 ;the lowest three bits of scr addr ...
    Ast_A_Moore Ast_A_Moore February 2017 Development
  • CSSCGC 2021: 25th edition extravaganza![img]https://csscgc2021.files.wordpress.com/2020/12/yellow_programmer_960x600.png[/img] [url=https://www.rickdangerous.co.uk/csscgc2021/][b][size=…

    ... 's given me the all-clear to get the next CSSCGC ... underway - because, what has been clear since May is that my ... -777 Games compilation[/url] - the lowest-rated of all my submissions ...
    The Mighty Dopethrone The Mighty Dopethrone December 2020 Games
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... ? I made my self entirely clear that this was the case ... it's already at the lowest level! What is more sensible ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • Spectrum helpHello all I run a website which is some sort of community/game information hybrid. It's dedicated to most gaming platforms (currently 62 of them). I…

    ... way as to make it clear and yet will probably leave ... you're already at the lowest voltage for black (ie 0 ...
    cyborg cyborg November 2002 Games
  • More random questionsWay back in the mists of time I remember reading a couple of articles in an ancient copy of Sinclair User, ZX Computing or the like (can't remember w…

    ... will always work with the lowest line number. If you have ... just be RUN ) it'll clear the Poke, the same way ...
    Amigo Amigo July 2003 Games
  • Z80 coders compoIf you're interested in Z80 coders compo, visit my page [url="http://mbr.nm.ru/compo.html"]http://mbr.nm.ru/compo.html[/url]

    ... a,(hl)
    or a ; clear half-carry flag
    daa ... hl
    and c ; keep lowest nibble in A
    add ...
    Alcoholics Anonymous Alcoholics Anonymous November 2003 Development
  • Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…

    ... Basic, set RAMTOP to the lowest address needed by your program ... m/c at 30000, first CLEAR 30000. Basic will move itself ... way. If you can't CLEAR to a certain address, Basic ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • NVidia Display drivers - fuk!n up my system - need help!Hello. Im having problems with video card drivers. My graphics card is NVIDIA GeForce4 MX440 64MB. I downloaded the latest (or tried the older) dri…

    ... first it will setup the lowest level of devices in the ... and give it a good clear out.

    If your ...
    KeepGood KeepGood October 2005 Chit chat
  • Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…

    ... using a combination of the lowest order FRAMES byte, and the ... faster than just using the lowest two bytes of frames.
    10 CLEAR 65267
    20 GO SUB ...
    Digital Prawn Digital Prawn December 2005 Emulators
  • The Adv. Game I'm Ridiculously Trying To Play Part 1Ok, from now on from time to time I will start playing some adventure games and I will keep a "journal" in the forum about my progression, or, more p…

    ... what we need to get clear in our heads first is ... were all written by the lowest common denominator of nerd. They ...
    Dave Fountain Dave Fountain October 2006 Games
<1234567…34>

Latest Posts

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  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
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