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  • ANN: Spectaculator 6.2[NEW]: Spectaculator 6.2 Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows 95, 98, ME, NT 4, 2000 and XP. Spectaculator emul…

    ... those demos that produce fancy multi-colour effects as
    well ...
    Jon Needle Jon Needle May 2004 Emulators
  • 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
  • Ultimate PollIt seems that most people like giving their profiles/opinions, so here's another one... see if I can make a poll out of it :) (some questions may ha…

    ... magazine
    18. Favourite old multi-format magazine
    19. Favourite ...
    chaosmongers chaosmongers June 2004 Sinclair Miscellaneous
  • 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
  • Finishing my Ragnar game...Hi all, Way back then, in my youth, I worked on a game for the Speccy called "Ragnar", which was a 3d isometric style mcoded game written from scrat…

    ... to work with the frame interrupt (i.e the raster line ... sound (and 4) perhaps also interrupt handling in general?). The help ...
    ekoman ekoman July 2004 Development
  • 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
  • IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…

    ... start

    ;a test interrupt function located
    ;at 35002 ... Basic


    ;prepares interrupt handling
    prepint
    ld ...
    ekoman ekoman July 2004 Development
  • XK SystemIn Your Spectrum issue 8 it mentions a hardware paging system called the XK system, this paged the top 32KB of memory. It allowed 4MB to be used and…

    ... programs in different memory pages multi-task with each other, writing ...
    speccyverse speccyverse July 2004 MIA/STP/SDP
  • 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
  • Game loop design?Having some thoughts on how to design the game loop and could do with some hints and tips from folks who have done it before! It's all about how to …

    ... />
    halt ;Wait for interrupt
    call drawsproffscr ;Draw offscreen ... synchronized with the IM2 interrupt when the sprite has ... be synchronized with the interrupt no matter if the ... the main game loop, interrupt synchronization and whether I ...
    ekoman ekoman 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
  • What hardware Sinclair and not related has everybody got?Just had to try to list all my clutter in the attic and my dads garage (this has got a bit out of hand), anybody else got as much Retro as this (boug…

    ... *Mega Drive 2
    1*Multi Mega (megadrive/mega cd in ...
    Mort! Mort! August 2004 Sinclair Miscellaneous
  • 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
  • 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
  • RETRO GAMER ISSUE 7 now available to pre-order!Retro Gamer issue 7 will be available to buy from August 31st, and copies can now be pre-ordered from [url="http://www.retrogamer.net"]http://www.ret…

    ... witnessed the UK's first multi-format retro event. In our ...
    RandySparks RandySparks August 2004 Announcements
  • Mobygames.com have added the Spectrum!As you may remember, I posted a petition to persuade the multi-format games information site [url="http://www.mobygames.com"]www.mobygames.com[/url] …

    ... a petition to persuade the multi-format games information site [url ...
    MartinUK MartinUK August 2004 Sinclair Miscellaneous
  • AugmudFor those of you who are interested (which I hope includes everyone :) ), you should check out Augmud. It's a Multi-User Dungeon (obviously) and a ve…

    ... out Augmud. It's a Multi-User Dungeon (obviously) and a ...
    Ian Hamilton Ian Hamilton September 2004 Sinclair Miscellaneous
  • Manic MinerI was just browsing through the sinclair auctions on ebay and I came across a version of Manic Miner. It is the Bug Byte version and the seller claim…

    ... Miner. It is the Bug Byte version and the seller claims ... Rare'. I know that Bug Byte released it with two different ...
    Ian Hamilton Ian Hamilton September 2004 Games
  • Wanted: Code to wait until Border has been drawnWhen my IM2 interrupt fires, I want to wait until the ULA is past the first line of display before drawing. I know I need to wait about 14300T after…

    When my IM2 interrupt fires, I want to wait until the ULA is past the first line of display before drawing.

    I know I need to wait about 14300T after interrupt but how can I tell if the ULA is now past the border and onto the screen?
    robpearmain robpearmain September 2004 Development
  • Checksums in Hobeta filesDoes anyone here have any experience with working with the internals of the Hobeta (aka .$b, .$c ...) file format, or failing that, checksum algorith…

    ... /> There's a checksum at byte 0x0e, which, according to [url ...
    gasman gasman September 2004 Development
  • Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…

    ... ;MULTIPLY BY 2 (2 byte address)
    ADD HL ... /> ;ORd with the last byte of the
    ;tile ... LD A,(DE) ;The leftmost byte of each
    OR ( ... LD A,(DE) ;The leftmost byte of each background
    ... /> LD (HL),A ;byte of the previous one.
    dmsmith dmsmith September 2004 Development
  • The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…

    ... inc hl ; Goto next byte in table
    ld ... e,(hl) ; Fetch 'last' byte in table
    prbyte ld ... a,(hl) ; Fetch byte for print
    rst 16 ... br /> jr prbyte ; Print byte from screen
    table ...
    Dr BEEP Dr BEEP September 2004 Development
  • The original MaziacsThis is probably old news to most of you, but never mind! I was flicking through an old magazine (C & VG, June '82) when I noticed an advert for a Z…

    ... a ZX81 game by Bug Byte called 'MAZOGS'.

    The ...
    Blunderbuss Blunderbuss October 2004 Games
  • Claim to Speccy fameHas anybody had their name in print in a Spectrum magazine? Either on a letters page, giving a hack/cheat or printing of a type in. By the way I've…

    ... /Nov 1983 which reveals Bug Byte are releasing a new prog ...
    rich_chandler rich_chandler October 2004 Sinclair Miscellaneous
  • How can I see how long it took for IM2 to runHow can i see how many cycles it took for my interrupt routine to run, is there some way with Spectaculator debugger etc to see how long it has taken…

    How can i see how many cycles it took for my interrupt routine to run, is there some way with Spectaculator debugger etc to see how long it has taken from entering the IM2 routine to RETI
    robpearmain robpearmain October 2004 Development
<1…22232425262728…34>

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