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<1…3456789…34>
  • 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…

    ... and 16 pixels wide (12 bytes)

    if ... known function memcpy() (see string.h). This straight copy ... address of 9 attribute bytes, one for each character ... sp1_update { // "update structs" - 10 bytes - Every tile in the display ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • 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…

    ... and 8 pixels wide (6 bytes)

    if ( ... 8" indicates how many bytes to the right we ... and present in z88dk's string library) memopi() to ... instead of simply copying bytes from a source address ... an operation to the bytes as they are transferred. ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • 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…

    ... is found in string.h ; it swaps n bytes between destination and ... zeroes in the first four bytes of the "struct plot" structure ... address and the sequence of bytes actually stored at that memory ... holds a memory address (2-bytes). What that address points to ...
    Alcoholics Anonymous Alcoholics Anonymous September 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…

    ... the result is an empty string where "+0" is added, returning ... 32/24/16/8 bytes frome the
    string as result, depending ...
    Dr BEEP Dr BEEP September 2007 Development
  • 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…

    ... current character within that string being drawn at the ... in message is end-of-string '\0'
    g_scrollPos = g_textBuffer; ... non-standard additions to string.h and are described ... library:string"]z88dk wiki[/URL]. Both functions copy N bytes from ...
    Alcoholics Anonymous Alcoholics Anonymous October 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…

    ... would only show an empty string "".

    Another trivial example ... hidden instead in a single string "" using the same trick (although ... want hidden inside a single string "".

    Of course ... (8^3=512) with 2 bytes each to encode each byte ...
    Einar Saukas Einar Saukas October 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…

    ... hidden instead in a single string "" using the same trick (although ... levels in about 750 bytes, leaving almost 300 bytes for the control ...
    Dr BEEP Dr BEEP October 2007 Development
  • Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…

    ... be compressed down to 12 bytes. Likewise the sqrt function ... LN is done in seven bytes whereas a dedicated iterative ... />
    Atari basic employs string slicing as opposed to LEFT ... declared. Sinclair basic performs string slicing and allows variably sized ...
    Alcoholics Anonymous Alcoholics Anonymous December 2007 Sinclair Basic
  • DEF FN DirectivesI am looking at using some machine code functions from the DK Graphics Pack. They are machine code but they are called via Basic with the function de…

    ... through the parameters... skip 4 bytes to get to the X ... skip another 8 bytes to get to the string. I [I] ... think[/I] the string was [I ... as an address of a string, then the length of the ... string, but without debugging my code ...
    icabod icabod December 2007 Development
  • Z88DK fun and gamesHi, I was wondering if anyone here uses Z88DK with TommyGun and knew about how to link the two together (e.g. how do I use a screen, sprite or map e…

    ... memcpy() call copies the screen bytes to the display file using ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • A BASIC compiler projectHi, I started my own BASIC compiler for the ZX Spectrum (and Z80 machines) 3 months ago. It's still in ALPHA stage (when it is mature, I will write …

    ... can be included within the string. String concatenation, LEN etc. are almost ... , and it's only 200 bytes.

    [QUOTE=Winston; ... ). To allow more than 128 bytes of parameters or local variables ... function call sequence by 19 bytes and delays it only 10 ...
    boriel boriel April 2008 Development
  • 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…

    ... require 3*2*8 = 48 bytes of memory. If this sprite ... be present anywhere in the string, not just following a '\n ...
    Alcoholics Anonymous Alcoholics Anonymous April 2008 Development
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... $0E ;is it 5 bytes of FP?
    JP ... INC HL ;now skip 5 bytes of FP
    DEC ... /> JR getnum3 ;skip following bytes
    getnum2:
    LD ... ;update IX for load bytes routine
    LD DE ... prmsg:
    ;print ASCII string following CALL statement
    ; ...
    Jimmy Jimmy April 2008 Emulators
  • Microdrive CATIs there a way in Basic to obtain any more useful info on the contents of a Microdrive? File size, head info for example? Also, is it possible in ge…

    ... entire buffer with only two bytes spare.
    You can send ... read this file to a string or array using INKEY$ #4 ...
    Geoff Geoff June 2008 Sinclair Basic
  • A BASIC compiler projectHi, I started my own BASIC compiler for the ZX Spectrum (and Z80 machines) 3 months ago. It's still in ALPHA stage (when it is mature, I will write …

    ... only for "in de middle" string assignations:
    [code]
    REM ... accept up to 65535 bytes long). When a string is changed, its ... ]garbage collection[/i]. When a string is declared in a function ...
    boriel boriel June 2008 Development
  • The best Othello or Reversi on the Spectrum?Erm, the title of this thread pretty much says it all; I'm looking for the best Othello or Reversi style game on the Speccy. What would you suggest? …

    ... down to a 60-byte string, suitable for a one-liner ... . e.g. the first four bytes in the list correspond to ...
    Digital Prawn Digital Prawn July 2008 Games
  • CSSCGC 2008 has now officially begunFor coming last in the 2007 crap game compo, I have the honour and privilege of hosting CSSCGC 2008! I have now put up the CSSCGC 2008 website at …

    ... can save you a few bytes as you're still thinking ... in the backside by dynamic string allocation at program runtime. That ...
    Digital Prawn Digital Prawn August 2008 Games
  • CSSCGC 2008 has now officially begunFor coming last in the 2007 crap game compo, I have the honour and privilege of hosting CSSCGC 2008! I have now put up the CSSCGC 2008 website at …

    ... can save you a few bytes as you're still thinking ... version. Saved something like 300 bytes.
    On the VIC, that ... have a comma in the string (for obvious reasons - it is ...
    Digital Prawn Digital Prawn August 2008 Games
  • Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…

    ... converted into a VDU 25 string sequence. DRAW is just a ... . Envelopes for example require 14 bytes. It [I]should[/I] be ...
    Jimmy Jimmy August 2008 Development
  • Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…

    ... it will take less memory bytes i belive...

    ... and then print that new string of text. Like "print ... in buffer, scroll up one string, ldi the text from ... to screen, scroll up one string..." and so on while ... the string is not fully printed. ...
    Shadow Maker Shadow Maker October 2008 Sinclair Miscellaneous
  • Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…

    ... it will take less memory bytes i belive...[/quote]
    string of text. Like " ... buffer, scroll up one string, ldi the text from ... screen, scroll up one string..." and so on while ... pixels and then print new string, no difference.[/quote]
    omega omega October 2008 Sinclair Miscellaneous
  • Random access, file sizes and more.A few days ago Aowen mentioned that random access to saved data is not a problem. Here are my thoughts, doubts and suggestions regarding this subject…

    ... * 8 allocation units/extension * 2048 bytes/allocation unit).
    I don ... a file, I wonder about string slicer syntax: LOAD "FILE" SCREEN ...
    John Elliott John Elliott November 2008 Development
  • Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …

    ... to an even number of bytes, regardless
    ; of ... />

    ;Create string for last failed address
    INC HL ;Increment string pointer
    DEC C ;Decrement ...
    ; Print NUL terminated string at (HL) onto screen at ...
    Digital Prawn Digital Prawn January 2009 Games
  • Playing 128k music with z88dk ?Hi, I'm amazed how easy seems to make things with z88dk to build spectrum asm programs. After my first approach I miss some way to play 128k music, s…

    ... vector table with all 0xd4 bytes
    bpoke(0xd4d4, 195); // POKE ...
    Alcoholics Anonymous Alcoholics Anonymous February 2009 Development
  • Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …

    ... allows you to select a string (by index) and then ... string character by character.

    Routine is just 128 bytes ... containing huffman tree and compressed string data which you can ... to have multiple [tree+compressed string] databases and switch between ...
    BloodBaz BloodBaz May 2009 Development
  • Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …

    ... allows you to select a string (by index) and then retrieve ... the string character by character.
    [/QUOTE ... #2031). Aligning messages on whole bytes damages compression a bit (0 ...
    Fikee Fikee May 2009 Development
  • Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …

    ... as follows: [I](word = 2 bytes/16 bit value)[/I]
    Each node is two bytes.
    For a leaf node ... />
    [word] Number of String Messages in String Data (can be > ... nodes; Each node is 2 bytes so double it
    ; Then ...
    BloodBaz BloodBaz May 2009 Development
  • DATA BIN - How to read the contentOkay I hit a snag with my Image to ZX Spec program that the plot/draw command eats too much memory. So I want to use DATA BIN to insert converted jp…

    ... (e.g. "10" = 2 bytes, ASCII style), followed by a ... number which consumes another 5 bytes.

    This ... 10, 20, 30 consumes 27 bytes instead of (say) 3. ... routine to read the string then extract each binary ... pixel graphic with 3 bytes per pixel (R/G ...
    BloodBaz BloodBaz May 2009 Sinclair Basic
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