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<1234567…34>
  • Machine Code: quicksort optimisationI came across this z80 quicksort implementation when going through the wikipedia article on the same. It's 44 bytes long. I was wondering if any of …

    ... eg, but more importantly the array being sorted can be an ... /> [code]
    ; enter: BC = base address of array
    ; HL = size of ... HL,IX registers)
    ; exit : array sorted
    ; uses : AF, ... with HL = last item in array

    .Lqsort
    ...
    Alcoholics Anonymous Alcoholics Anonymous January 2006 Development
  • Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …

    ... . %-)

    we can use array of function pointers which filled ... every ZX memory address (one array for each address). for most addresses it ...
    Ketmar Ketmar June 2011 Emulators
  • Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …

    ... that can be rebuilt to address variable data rates, it's still ...
    cj7hawk cj7hawk March 2021 Hardware
  • Character Array tape header block parameters?Hello all! Long time since I've been here! Hope everyone's bright and cheerful as usual! I've been trying to figure out the structure of a Spectrum…

    ... structure of a Spectrum "Character Array" tape file. While the file ... of Parameter 1 contains the variable name, which is fine.
    variable. By trial-and-error, it ...
    trellis trellis June 2006 Development
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... shared memory, and initialises a variable bl_ctrl to 1. It sleeps ... the shared memory to its address space, and (I think) ... shm segment to the BDOS address space... ");
    if ((data = ... bl_ctrl into seperate address spaces, so that the variable is not located ...
    wilsonsamm wilsonsamm December 2009 Chit chat
  • Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…

    ... /> [B]LINES[/B] records the address of every line in the ... code (not the original BASIC address). There are 2 end markers ... 32767 and contains the end address of the compiled code. The ... variables. Each numeric, string and array variable consumes 6 bytes. As all ...
    Jimmy Jimmy May 2011 Development
  • Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…

    ... which aren't in an array, like this:
    [code]
    array, or in different arrays as ... they were in the same array, by applying the same operations ... : equ 23698

    ;Indirect Variable Assignment
    ;PRINT USR indirect ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • Undefine functionHere's a routine to selectively remove variables from the VARS area and reclaim the space. This can be done partially from BASIC already by assigning…

    ... /> ld (CH_ADD),de ;variable name address
    push bc ;variable name length
    array
    dec hl
    dec ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • Screen address of PRINT position...Hi Folks, The following code uses DF CC system variable to extrac the screen address for a PRINT position. [code]100 CLS 110 PRINT AT 10,16;…

    ... DF CC system variable to extrac the screen address for a PRINT ...
    Paddy Coleman Paddy Coleman September 2016 Sinclair Basic
  • "ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…

    ... seem excessive to define an array - DIM z(90) - with 90 ... z(i) would hold the address that needed to be POKEd ... stack. I've used the variable o to hold the result ...
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Basic
  • An MC question (sorry, there's no MC forum to post to!)Ok, still struggling with learning MC - but am getting there. I just can't find anywhere on the web / in books that explains how to do arrays in MC.…

    ... want to find "array(b)" where "b" is a variable.
    < ... base address to generate the final memory address. The register is variable so ... you can use it as an array ... is fixed and the base address is variable (held in one of ...
    Alcoholics Anonymous Alcoholics Anonymous April 2004 Sinclair Basic
  • +3e file manager program/projectFirstly let's get one thing sorted. This program/project is written entirely in basic, as I am a lamo who doesnt know enough M/C. It really Is'nt th…

    ... ,"[/B][B]M>[I]address, len[/I][/B][B]"[/B ... the output to a string array, which is easier to handle ... to the string into the variable [B]l[/B]. Then you ...
    glancaster glancaster April 2006 Sinclair Basic
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... the timer in system variable FRAMES. Since 0x38 lies ... />
    [code]
    ; ADDRESS (HEX) LIBRARY DESCRIPTION
    ;
    array
    ; d500 - efff SP1 ... .LIB update array for full size screen 32x24 ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... specifying a new sprite graphic address in the "frame" parameter ... tiles to print from an array of struct_sp1_tp:

    ... for each pacman direction. The variable "frame_seq" is used to ... index into the "frame_seq" array to select the current pacman ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... simply copy the link address and paste into your ... variable, but is instead stored in the tile array ... the address of the screen in the tile array for ... tile code 0. The address stored ... but the address minus 0x4000 (ie the address relative to ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Possibly a little OT: Exporting ROM function addresses to the Z88DKOK, so I'm using the Z88DK. It's entirely possible that some documentation has bypassed me. But assume I have a function in ROM, say, at address 0xF0…

    ... the heap gets initialized at address 0x0000 which is not terribly ... can either be a static array declared globally in your main ... address.

    The new one uses a single 4-byte variable ...
    Alcoholics Anonymous Alcoholics Anonymous April 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…

    ... address of....; essentially array names *are* a numerical address. Whereas pointers store the address ... of something. A pointer variable needs ... to store a memory address whereas an array name *is* a ...
    Alcoholics Anonymous Alcoholics Anonymous June 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…

    ... declaring it as a character array:

    [code]
    ... last one initializing the char array s2 and the compiler ... memory address as a pointer variable can. You can index in array as ... a variable that can be incremented; it is just a numerical address ...
    Alcoholics Anonymous Alcoholics Anonymous July 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…

    ... subtle difference when using the array version when compared to ... a pointer. Array names are aliases for memory ... memory address as a pointer variable can. You can index in array as ... variable that can be incremented; it is just a numerical address ...
    mulder mulder July 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…

    ... including level, current round, global variable pool, etc
    [*][B ... the actual code and variable space allocations, whereas the ... making space for the variable, just informing the compiler ... address of the amp0 array, the amp1 array or the amp2 array ...
    Alcoholics Anonymous Alcoholics Anonymous July 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…

    ... will result in the address of the amp1 array. And skipping ahead ... will result in the address of the amp2 array.

    A ... is in the for-loop variable "i".

    So that ... probablity, to modify a random variable to take on a more ...
    Alcoholics Anonymous Alcoholics Anonymous July 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…

    ... with this declaration a new variable type "struct plot" ... The compiler will create the variable "p" with enough space ... synonym for the address of the array and is of ... g_numAvailablePlots", another global variable declared extern, this variable keeps track of ...
    Alcoholics Anonymous Alcoholics Anonymous July 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 a memory address within the g_land[] array) and the function returns ... , by passing in the address of a variable to modify, a function ... distance value from the "plotdist[]" array. "plotdist[]"' is made static so ...
    Alcoholics Anonymous Alcoholics Anonymous August 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…

    ... the "struct mtn g_mountains[20]" array defined in "mountain.h". ... of three mountains. So a variable (rather unintuitively) called "j" ... at memory address "g_land" (the start of the array of 45 ...
    We use the global variable "g_uchar0" to hold the size ...
    Alcoholics Anonymous Alcoholics Anonymous August 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…

    ... plot. This and the mountain array "struct mtn g_mountains[]" ( ... 8 ) within the 5x9 array of plots corresponding to ... taken as address of graphic, else lookup in tile array)
    variable "g_puchar0" into this "colour" member. The pointer (address) " ...
    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…

    ... "struct mtn g_mountains[20]" array indexed by mountain row. For ... the "struct mtn *m" variable with the address of the first of ... bits only ("& 0x38"). The array "gfx_playerColour[]" contains all players' ... a player is red the array holds an attribute with ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
<1234567…34>

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