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  • When do you optimise?I was just wondering when people here optimise their code. Do they wait till it is all done or do they code a routine and then optimise that?

    ... to grab variables and stack them before function calls.< ... on performance is how the stack frame is managed (how ... to index parameters in the stack -- this is the wrong ... IX to index the stack. I suppose if the ... the parameters on the stack and again start using ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • When do you optimise?I was just wondering when people here optimise their code. Do they wait till it is all done or do they code a routine and then optimise that?

    ... hubbub to grab variables and stack them before function calls.[/quote ...
    cyborg cyborg May 2006 Development
  • The Prisoner - FINALLY a REAL remake!Aparently SKY ONE will be remaking 'The Prisoner' as a new series. And Christopher Eccleston is going to be Number Six! One thing that is bang out …

    ... even if it doesn't stack up to the original, there ...
    Matt_B Matt_B May 2006 Chit chat
  • 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…

    ... .asm
    parameter fetching from stack changed
    [*][B]{z88dk}\libsrc ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Memorable game demisesHi, No, not demises in games...demises OF games. I can remember three of my games meeting their fate in an unnecessary way Battle of the Planets -…

    ... two and never succumbed to smashing them (especially at 30-45 ...
    Vampyre Vampyre May 2006 Games
  • ZX Advance on the DS....It's fantastic!!! I new soon or later I was bound to get a DS, even though I have Zero time to play with it, and I am glad I did!! First thing I did …

    ... seem to do that is smashing into another vehicle. I sailed ...
    Vampyre Vampyre May 2006 Sinclair Miscellaneous
  • 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…

    ... list, hash table, heap, stack and queue. I will also ... linking necessary. Quicksort requires some stack space to store recursion info ... iterative" is a misnomer); a stack-usage free heapsort can be ... contains self-modifying code and stack tricks that make their ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • What's the most annoying radio commercial ever?To my mind it has to be the bloody [url=www.ocado.com]Ocado[/url] one: "I am the Ocado ad, On your radio every day[*], I am annoying, And mind-destr…

    'Tis the Wal*Mart way... stack 'em high, price 'em cheap.
    cyborg cyborg May 2006 Chit chat
  • Name the band/artistAnother game to pass the working hours. Describe an artist or band without using their names. For example:- Q. The Sun newspaper. A. Simply Red.

    Smashing Pumpkins.

    I come from a different land.
    Ian Hamilton Ian Hamilton May 2006 Chit chat
  • 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…

    ... table
    ; d100 - d2ff ------- z80 stack (512 bytes) set SP=d300 ...
    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…

    ... linked list, hash table, heap, stack and queue. Byte- and word ... Doubly-linked list, hash table, stack and queue are what are ... (no duplicates).

    [U]Stack[/U]

    Stacks are ... Likewise, items PUSHed onto the stack last are POPped off first ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…

    ... hl ;store these positions in stack -
    push de ;they will ... hl ;store these positions in stack -
    push de ;they will ... hl ;store these positions in stack -
    push de ;they will ...
    48K 48K May 2006 Development
  • PS2 Resident Evil 4!!Just played the PS2 demo of RE4....fantastic!! Anybody else played it yet?

    ... a memory card with a stack of games cheat codes on ...
    Daren Daren May 2006 Chit chat
  • Extracting the Multiface ROM?Is there an easy way to save the contents of a real Multiface 128 ROM to tape, on a real spectrum, for the purposes of transferring it to PC for emul…

    ... , else you may lose the stack and BASIC will crash, but ...
    DEATH DEATH June 2006 Hardware
  • PS2 Resident Evil 4!!Just played the PS2 demo of RE4....fantastic!! Anybody else played it yet?

    ... crows :-) You usually get a stack of cash and other items ...
    Daren Daren June 2006 Chit chat
  • PS2 Resident Evil 4!!Just played the PS2 demo of RE4....fantastic!! Anybody else played it yet?

    ... crows :-) You usually get a stack of cash and other items ...
    xfa84 xfa84 June 2006 Chit chat
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... with the calculator stack then just stack values directly from ... 64
    CALL $2D28 ; STACK-A
    RST 28H ; ... result is still on the stack
    CALL $2DE3 ; ... result and remove from stack
    RET ; empty stack

    Geoff Geoff July 2006 Development
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... it three parameters via the stack. E gives the name of ...
    trellis trellis July 2006 Development
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... it three parameters via the stack. E gives the name of ... the return address (top of stack)
    dom dom July 2006 Development
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... the return address (top of stack)[/QUOTE]

    Yes, ... the first item on the stack will be the return address ... for pushing parameters on the stack before the "CALL zx_setstr" ... and then for restoring the stack (removing parameters) after the call ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Development
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... the first item on the stack will be the return address ... be pushed back on the stack.[/QUOTE]
    Duh! Of course ...
    trellis trellis July 2006 Development
  • Gamex Retro Gamer reviewNice to see GAMEX get 87% in this months Retro Gamer :) Though not everyone is happy that they didn't get a mention... [url]http://www.retrogamer.n…

    I liked it when he said that 50 games for a fiver was better than one game for a quid.

    Did this man never hear of Cassette 50?

    Stack'em high, sell'em cheap...
    NickH NickH July 2006 Games
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    ... don't fiddle with the stack. Obviously things like CLEAR do ...
    Philip Kendall Philip Kendall July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    Stack pointer may be stored at ... , and restored at end.
    Stack content must be not touched ...
    piters piters July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    ... />
    I actually move the stack (or set SP) on startup ...
    icabod icabod July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    Given that the stack must be preserved, you can just PUSH HL before saving the stack, and POP HL after restoring it.
    NotFound NotFound July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    [quote="NotFound"]Given that the stack must be preserved, you can ... PUSH HL before saving the stack, and POP HL after restoring ...
    Metalbrain Metalbrain July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    ... is pointing at the original stack location and IM1/EI is ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Development
  • Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…

    ... is pointing at the original stack location and IM1/EI is ... /> 1. Save SP and the stack (or just don't mess ...
    trellis trellis July 2006 Development
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