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<1…16171819202122…34>
  • need help in codingI have an address in HL, which I must save in memory buffer (for example at address buff1) with shift (for example taken from memory address shft1). …

    ... )

    (buff1) is 1 byte long.
    moroz1999 moroz1999 September 2003 Games
  • Stacks of Spectrum tapes for sale - 50p start - inc. Ultimate gamesI have a load of Spectrum games that I've listed on EBAY at the moment, all of which start at 50p, mostly first generation early titles. My EBAY ID …

    ... ZX Spectrum - MANIC MINER (Bug-byte)
    Sinclair ZX Spectrum - MONEY ... /> Sinclair ZX Spectrum - STYX - (Bug Byte)
    Sinclair ZX Spectrum - TERRA ...
    chaosmongers chaosmongers September 2003 Sales
  • Early first generation Spectrum titles for sale - 50p startI have a load of Spectrum games that I've listed on EBAY at the moment, all of which start at 50p, mostly first generation early titles. My EBAY ID …

    ... ZX Spectrum - MANIC MINER (Bug-byte)
    Sinclair ZX Spectrum - MONEY ... /> Sinclair ZX Spectrum - STYX - (Bug Byte)
    Sinclair ZX Spectrum - TERRA ...
    chaosmongers chaosmongers September 2003 Announcements
  • Ok Dokey, ive got 700+ Dupes to shift ;) Swapsie??I will sell the below, but id rather swap for missing tapes i dont have on a 1:1 basis. if you would like to swap send a list of your dupes to me at …

    ... /> Wulfpack

    Byte Back

    Bug Byte
    Antics

    G-Force
    Euro Byte

    Game Busters
    Cornishdavey:)) Cornishdavey:)) September 2003 Sales
  • Bug-Byte games wantedHi, Does anyone out there have the following games which they'd be willing to sell / trade? The games have to have specific coloured writing on the i…

    Hi, Does anyone out there have the following games which they'd be willing to sell / trade? The games have to have specific coloured writing on the inlay spine, as I already have the alternate version.

    General Election with yellow writing on ...
    Gilby Gilby October 2003 Wanted
  • AssemblageCan any of you marvellous programmers out there recommend a Speccy assembler that even a complete dunce could use? At the risk of sounding thick, as…

    ... /> 1,99,201... with one byte missing, as it wasn't ...
    The Mighty Dopethrone The Mighty Dopethrone November 2003 Sinclair Miscellaneous
  • Spectrum original games for saleSelling off my Spectrum collection, all are mint condition with all documentation. Some are listed below, i also have game compilations, utilites, ma…

    ... charts...
    Manic Miner - Bug Byte Software
    Jet Set Willy ...
    quiffy2003 quiffy2003 January 2004 Sales
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... pixel mode with 8x1 pixel attribute cells

    * 12k screen ... 16, or with 8x1 pixel attribute cells

    * Perhaps an ...
    monty.mole monty.mole February 2004 Sinclair Miscellaneous
  • 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…

    ...

    Bug Byte
    Fridge Frenzy Bug-Byte Software Ltd
    Cosmic Pirate Byte Back
    Death in Russia ...
    Cornishdavey:)) Cornishdavey:)) February 2004 Wanted
  • TV-GAME - a brand new game by WSS TeamHere is a special new game that extends the power of ZX-Spectrum ! It has extra wide screen, uses not 256, 288 * 192 pixel and not 2 colors, 8 color…

    ... colors, 8 colors in an attribute with smooth graphics in the ...
    Pgyuri Pgyuri February 2004 Announcements
  • TV-GAME - a brand new game by WSS TeamHere is a special new game that extends the power of ZX-Spectrum ! It has extra wide screen, uses not 256, 288 * 192 pixel and not 2 colors, 8 color…

    ... colors, 8 colors in an attribute with smooth graphics in the ...
    Pgyuri Pgyuri February 2004 Games
  • Entire Sinclair Software Collection For Sale - Built Up Since 1988!Sinclair Spectrum Software For Sale Information below includes the title of the software, the type of media it is supplied on and the price. I can a…

    ...

    Glider Rider (Bug Byte ? 1988)

    48K/128K ...
    retrogod retrogod March 2004 Sales
  • memory is filled up under Win XP when opening many filesDear friends, I have the big and strange problem that ZX-Rainbow's game scanner is not working properly under Windows XP. I figured out (during a ti…

    ... if I read only 1 byte of the file, XP stores ...
    Seejay Seejay April 2004 Development
  • RST 16 with TASMCan any body tell me what is wong when I assemble this test code with TASM : ;print a long string "help me" start .org 32000 ld a,2 call 5633…

    ...
    jr loop
    data .byte "HELP ME"

    .end ...
    Steve(spt) Steve(spt) April 2004 Development
  • My collection for sale. Full list here!Here's the list of what I am selling. Please contact me at cheggersplayspop*@boltblue.com (remove the *) and make me an offer! TITLE PUBLISHER YEAR …

    ... Belief 1991
    Core Bug Byte 1986
    Flyer Fox Bug ... Byte 1986
    Pool Bug Byte 1983
    Pool Bug Byte 1983 ... Bulldog 1987
    Kendo Warrior Byte Back 1989
    Bionic Commando ...
    Steve B Steve B May 2004 Sales
  • Aquarius RemakeWho remembers this Bug Byte game. Was one of the earlier ones I owned. Anyway, this is just a quick plug to let you know the my remake of it is rea…

    Who remembers this Bug Byte game. Was one of the ...
    GeeKay GeeKay June 2004 Games
  • Manic Miner Tape InlaysJust a question for you, how many different inlays were there for manic miner ? I have found the Software Projects "Alien" and Bug-Byte "Miner" inlay…

    ... Software Projects "Alien" and Bug-Byte "Miner" inlays but I have ... a third inlay by Bug-Byte brown back ground with an ...
    Rapunzel Rapunzel July 2004 Games
  • Decimals, bcd etc in z80...Working bloody full-time on my Ragnar Revival game right now - just finished the basic sprite engine and before I go on coding the actual 3d engine (…

    ... 's etc) in a separate byte and then when adding and ... best be implemented as one byte for each decimal place, as ...
    ekoman ekoman July 2004 Development
  • Another Z80 processor questionOK, this time this isn't clearly covered in the FAQ, as far as I can see.... Suppose we have the CB instruction "SET b,r" (b=bit, r=register (differ…

    ... do anything to the referred byte so it's not clear ...
    GOC GOC July 2004 Development
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... /> * M4: 3 tstates: read low byte from the interrupt vector.
    * M5: 3 tstates: read high byte and jump to interrupt routine ... /> * M2: 3 tstates: write high byte and decrement SP.
    * M3 ... /> * M3: 4 tstates: read high byte of 'nnnn' and decrement SP ...
    Philip Kendall Philip Kendall July 2004 Development
  • ScanlinesHere's an excerpt from the FAQ: [quote] Now for the timings of each line itself: define a screen line to start with 256 screen pixels, then border, …

    ... : a screen and an ATTR byte). The border is 48 pixels ...
    GOC GOC July 2004 Development
  • 2 questions regarding partial port decoding1) What happens if the Spectrum reads from a port whose number matches the criteria for more than one device ? Does only one of the devices get to r…

    ... get to receive/send the byte or do all do so ...
    GOC GOC August 2004 Development
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... such form: mask byte, sprite byte, mask byte, sprite byte... and so ... LD A,(DE) ;taking first byte of sprite (mask)
    ... LD A,(DE) ;taking second byte (sprite itself)
    INC ... LD B,A ;storing shifted byte for next time
    ...
    moroz1999 moroz1999 August 2004 Development
  • Calculate screenaddressWho knows where the topic about the fastest screenaddressroutine is? I can't find it in a search.. The fastest routine was to load a large table of …

    ... ,(HL) ; first part of lo-byte is X-dependent
    LD ... /> ADD A,(HL) ; Calculate Lo-byte
    INC H
    LD ... H,(HL) ; Fetch Hi-byte
    LD L,A
    Dr BEEP Dr BEEP August 2004 Development
  • Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…

    ... />
    ; ********************************************

    #define DEFB .BYTE
    #define DEFW .WORD
    LD L,A ; Get Hi Byte back, so H now is ...
    robpearmain robpearmain August 2004 Development
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... />
    ; ********************************************

    #define DEFB .BYTE
    #define DEFW .WORD
    LD L,A ; Get Hi Byte back, so H now is ...
    robpearmain robpearmain August 2004 Development
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …

    ... , in the .SNA file format, byte 19 is designated to contain ... any other singnificance to that byte? Because in the snapshots of ... I'm using it) that byte contained a variety of values ...
    Erlstoned Erlstoned August 2004 Development
  • Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…

    ... anyone know where that 2 byte pointer is, or where I ...
    Neil^P Neil^P August 2004 Games
  • If there's ONE thing that......frustrated you about the spectrum when you were a kid (not now) what would it have been? 1) The attribute colour problem 2) The sound 3) The size…

    ... been?

    1) The attribute colour problem
    2) The ... />
    Mine would be the attribute problem for sure; was always ...
    Parky Parky September 2004 Games
  • I have done a Spectrum Screen Design Template As PDFI use this for my games, to work out attribute and screen addresses. It is A4, to be printed landscape [url="http://www.peargames.co.uk/downloads/s…

    I use this for my games, to work out attribute and screen addresses. It is A4, to be printed landscape

    [url="http://www.peargames.co.uk/downloads/specform.pdf"]http://www.peargames.co.uk/downloads/specform.pdf[/url]
    robpearmain robpearmain September 2004 Development
<1…16171819202122…34>

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