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  • Compiler conventions for passing args/return valuesI've been mulling over this for a while, but I can't spot it covered anywhere. There are various methods for passing args and return values between …

    ... according to the data type length.

    I know z88dk ...
    u6c87 u6c87 September 2013 Development
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... (31232). Since with its total length it would occupy location 49152 ... changed the addresses and data length and removed the parts related ...
    Alessandro Grussu Alessandro Grussu September 2013 Development
  • Super Wonder Boy Encoding Scheme MisclassificationThe original Activision release of [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005053"]Super Wonder Boy[/URL] is listed as having an Enco…

    ... 1 => Program: SWB - Header: Length= 17, Pause=944ms.
    Block ... 2 => ------------------- - Line= 0, Length= 4476, Pause=12359ms.

    Length= 6914, Pause=10892ms.
    Block ...
    jp jp September 2013 Infoseek database
  • JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …

    There are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it incorporates a built in cheat mode. Feedback on this point is appreciated. To quote the readme:

    spider spider September 2013 Sinclair Miscellaneous
  • SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…

    ... 0,c ;DE=address, BC=length (0 or 1)
    ret ...
    Battle Bunny Battle Bunny October 2013 Sinclair Basic
  • 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…

    ... call z,.getlength_2; get additional length if so
    ldir ; ... /> and 15 ; isolate match length
    ld c,a ; ... call z,.getlength; get additional length if so
    ex ...
    stephenw32768 stephenw32768 October 2013 Development
  • Connectors for ZX BUSHere is photos of three different versions of connectors used on ZX interfaces: As you can see, each connector use different shape of contacts. Firs…

    ... better stability of connector. Also length of pins on back side ...
    velesoft velesoft October 2013 Hardware
  • Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…

    ...
    LD DE,1024 ; Loop length
    LD B,E ; Load ...
    Zerg Zerg October 2013 Development
  • Spin Emulator +D BugHi there, I think, I found a bug in SPIN Emulator. If I select +D Disk emulation and insert a disc into Drive 2, CAT 2 gave me the wrong number of fr…

    ... . Found out that the system variable for Sector count is wrong ...
    Gott Gott November 2013 Emulators
  • that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…

    ... elements are scaled to the length of the last dimension (truncated ...
    Battle Bunny Battle Bunny November 2013 Sinclair Basic
  • This is Tritone (new beeper music compilation)A Battle of the Bits music compilation! All made by nix./site, brightentayle and, most importantly, TK90X Fan! \ ^_^ / All the songs in here use a b…

    ... , which provides three channels of (variable) tone, a semi-volume control ...
    Crash Nicker Crash Nicker December 2013 Brand new software
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... memory
    ; 2 bytes data length
    db 0 ; screen$
    length (to put that routine inside ...
    Zup Zup December 2013 Development
  • Problem with Pasmo Assembler/Speccy emulator?I'm at the start of trying to learn Z80 assembly for the ZX Spectrum. I'm using Speccy 1.7 as my emulator, Pasmo as my assembler, and am following t…

    ... , and it responds with "2 Variable not found, 0:1" which ...
    bigbadbear9885 bigbadbear9885 December 2013 Development
  • SpecBAS 0.800 Released!Hi folks, it's that time again for another release. I was going to add a few more features, but I have other projects on the go at the moment, and it…

    ... /> Added:

    Optimised variable accesses local to procedures, quite ... much more efficient
    Improved variable caching to save on look ... sets a constant. Like a variable, but much faster to ... )="H" for a string variable now works again
    ...
    Dunny Dunny December 2013 Sinclair Basic
  • STP: Query about Dizzy prince of yolkfolk and MakeTZXI'm trying to create a TZX from my copy of Dizzy Prince of the Yolkfolk using MakeTZX 2.31 (not sure why I'm not using 2.33), but I can't seem to get…

    ... 2 => ------------------- - Chk=OK! (240), Length= 68, Pause=2068ms.
    Block ... 4 => ------------------- - Chk=OK! (180), Length= 145, Pause=2066ms.
    Block ... 5 => ------------------- - Chk=OK! (230), Length= 6914, Pause=2068ms.
    Block ...
    u6c87 u6c87 January 2014 MIA/STP/SDP
  • Request for TZX metadata to be publishedI understand why some programs are not available, but it would be helpful to me (and possibly others) who are trying to TZX their tapes to have a ref…

    ... MakeTZX which shows block types, length, scheme, etc...

    For ...
    u6c87 u6c87 January 2014 MIA/STP/SDP
  • Can any C experts help me - have hit an impasseHere is an excerpt from my attempt to program a Bridge game in C. Can you spot where I'm goiing wrong? I am trying to count the points in each ha…

    ... calculate a total using the variable running_total, which works. I then ... running_total to the double pointer variable *point_count, which is pointing at ...
    bigjon bigjon January 2014 Chit chat
  • About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…

    ... , for some reason, when a variable is of a 16 bits ... to assign values to each variable, this is, for example:
    na_th_an na_th_an January 2014 Development
  • WEC Le Mans missing a bit?WEC Le Mans (Hit Squad re-release) seems to be missing two sections of turbo-style data on the B-side. My copy A-side exactly matches the content of…

    ... played it yet for any length of time, so I can ...
    u6c87 u6c87 January 2014 MIA/STP/SDP
  • What to do when INT doesn't work?Due to the limitations of the Spectrum's floating point number format, two slightly different large numbers, or two slightly different small fraction…

    ... to INT.

    The variable 't' is a base 26 ...
    Battle Bunny Battle Bunny January 2014 Sinclair Basic
  • What's the deal with hash tables, anyway?As there's nothing in the [url=http://www.users.globalnet.co.uk/~jg27paw4/pourri/0-surc-contents.htm]Compendium[/url] about hash tables, and as I've …

    ... hashcode for a string of length 'n' characters is calculated by ...
    Battle Bunny Battle Bunny January 2014 Sinclair Basic
  • Colission detection problems.G'ah...it's always the same (I've asked before too) - I'm always struggling when it comes to doing box colission checks, so I'm basically hoping you …

    ... . :-(

    The enemy have variable sizes and could be 100x2 ...
    Sokurah Sokurah February 2014 Development
  • Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…

    ... has no header, the data length is 48896.

    I ...
    Speccy_James Speccy_James February 2014 Development
  • Puzzled about transferring games to tapeI was trying to transfer a game to a tape by using tapir and VLC. I opened up the tape file in Tapir and then converted it to a .wav file. I then pla…

    ... once I'd surpassed the length of the program on the ...
    SamTebbs33 SamTebbs33 February 2014 Games
  • Sony TCM-939 belt changeI want to change my belts in my Sony tape recorder because I have a feeling its one of the reasons why certain games wont play (out of 100 about 30 r…

    ... hope to find out the length of the 2 belts. Sadly ...
    morcar morcar February 2014 Hardware
  • Retrocables - Online store of cables and accessoriesHello to all, We are a spanish online store dedicated to the manufacture and sale of cables and accessories for retro computers and consoles, from S…

    ... manufacture the cables in any length and finishes, including cables for ...
    retrocables retrocables February 2014 Sales
  • From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…

    ... />
    - v$(32*20) DIM variable for "video buffer".
    - A ... 2x2 characters.
    - A dir variable that stores the v$ dim ...
    Hark0 Hark0 March 2014 Sinclair Basic
  • eVALuating $ in +3 BasicHi all, I was very interested in the thread below about re-starting Basic, and remember reasonable amounts from zx81 and early Spectrums. But I now h…

    ... it equal to the y variable - the Graph then Plots x ...
    sliderules sliderules March 2014 Sinclair Basic
  • New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …

    ... bar appears and its length.
    - the length of the black bar ...
    Patrik Rak Patrik Rak March 2014 Emulators
  • From Bedrooms to Billions ? Available only until 31st May 14[url=http://www.frombedroomstobillions.com/shop/blu-ray][img]http://lifeschool.mikendezign.com/pix/bedban1.png[/img][/url] [url=http://www.frombedroo…

    ... a British two hour feature length documentary movie that tells the ...
    lifeschool lifeschool March 2014 Announcements
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Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
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  • I bought an accoustic guitar. How do you play it?
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  • Goodbye Z80
    moggy on 9:07PM
  • Happy 40th Birthday to the Amstrad CPC464!
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  • Another Birthday! The Game Boy Is 35!
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  • I am currently watching.....
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  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • 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
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

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