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<1…45678910…34>
  • Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…

    ... so that you can have variables or equations as parameters.< ... ) here
    defs === make space for this many bytes

    So make some space with one of the directives ... used to index the system variables area) and HL' (for ... up a lot of space if i need to ...
    Alcoholics Anonymous Alcoholics Anonymous January 2007 Development
  • DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…

    ... program test, has vert few variables, and all lines are long ... workspace, so you only need space in program area to store ...
    NotFound NotFound January 2007 Development
  • DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…

    ... program test, has vert few variables, and all lines are long ... workspace, so you only need space in program area to store ...
    glancaster glancaster January 2007 Development
  • If a C64 can do it...Forgive me if this isn't the right section. We've seen coders surprising us over and over again with excellent demos and things that a few years ago…

    ... this includes the small memory space, the small size of data ... in Basic. All Basic variables, all C variables, all C data ... difference between local and global variables (all vars in Basic ... C functions can contain local variables that only exist while ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Speed of variables vs. POKE/PEEKGreetings, I'm sure I could probably find this out after careful study of the 48K ROM disassembly, but I was wondering whether someone already knew …

    ... ALT+V opens the BASIC variables table) and the following example ... =2 }

    Primitive numeric variables maintain their position (a first ... { a, b } even though more space has to be allocated e ... no scoping rules with BASIC variables - ones a variable is ...
    BloodBaz BloodBaz March 2007 Sinclair Basic
  • Screen$ disappearanceGreetings to all developers :D As you know, I have been playing around with Professional Adventure Writer and was making a few tests in the adventur…

    ... this. I use all the variables in their program and I ... CLEAR command not only clears space for the code, it also ...
    mulder mulder March 2007 Development
  • 16k Spectrum.How come emulator's in 16k mode don't provide 32 ram-pack support.

    ... /> There are two other variables that the MicroSource understands:
    space character between ! and ... ! does not have a space - REM ! marks an assembly ... the REM ! without a space e.g.
    ... you can use BASIC variables directly in the assembly ...
    BloodBaz BloodBaz March 2007 Emulators
  • Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …

    ... a few KB of stack space to perform an assembly (~4Kb ... ). It uses this for working variables etc.. I also know that ... a routine inside the stack space.

    If this is ... might set up in stack space).

    I'll keep ...
    BloodBaz BloodBaz March 2007 Emulators
  • 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…

    ... ) uses 2 or 3 static variables to hold heap info and ... blocks from around the memory space to the heap. You could ...
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • A New 21 UDG Plotter BASIC ProgramHello All, Here goes... My first proper Spectrum program for 20 years! And the reason why I've been asking about multiple banks of UDGS recently. …

    ... the basic loader to make space for the compiled code? I ... it will also clear all variables from memory if he uses ...
    Dunny Dunny June 2007 Sinclair Basic
  • 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…

    ... , floating point and string variables. Sinclair basic hides the ... assembler and you manipulate variables of several types that ... type, the compiler allocates space for it in memory someplace ... 0-65535.

    Variables holding memory addresses can be ...
    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…

    ... packs into such a small space and the powerful expression it ...
    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…

    ... everything that is dynamic, meaning variables. The data segment gets mapped ... this problem you can reserve space for the 33-byte s2 ... must allocate the full memory space, but as a string constant ...
    Alcoholics Anonymous Alcoholics Anonymous July 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…

    [code]
    1 LET n=191: BORDER 0: PAPER 0: INK 7: CLS : DIM i$(3,9):
    FOR i=1 TO 3: LET i$(i)=" # # # # ": NEXT i: LET p=16: LET b=0: LET a=p:
    LET s=0: FOR y=0 TO 14: LET e=y/2=INT (y/2): FOR x=(1-e)*24 TO e*24 STEP e*2-1:
    PRINT AT 21 ...
    Digital Prawn Digital Prawn 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…

    ... "do_scroll()" subroutine you have three variables declared: "uchar *sbuf, *dbuf ... create space on the stack to hold these variables. It ... will create space on the stack ... in the same order you declare the variables ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…

    ... a tradeoff between speed and space. Other than the fastest routine ... used for other 1 byte variables.
    Metalbrain Metalbrain July 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…

    Right, coding this was so addictive, I just had to get this finished (put my real work off)

    [code]
    1 LET n=191: DIM i$(4,9): FOR p=13 TO 15: LET i$(p-12)=" # # # # ":
    NEXT p: LET b=0: LET a=p: LET s=0: LET g=5: FOR y=0 TO 14:
    Digital Prawn Digital Prawn 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…

    ... really small but the local variables used means the compiler will ... bunch of instructions to access variables off the stack that an ... great. This saves on memory space. A nibble lookup table is ...
    Alcoholics Anonymous Alcoholics Anonymous July 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…

    ... less variables are needed overall, and you can use some further space ... y(n), saving further space. Net space saved by flattening string ... past, I have maintained variables for ghost X and Y ... ll report back..

    Variables:
    [code]
    a generic ...
    Digital Prawn Digital Prawn 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…

    ... the actual code and variable space allocations, whereas the header ... the implementation file and global variables declared in the implementation ... you are not actually making space for the variable, just ... the thought is to allocate space for these globals at ...
    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…

    ... compromise between speed and memory space. Speed is not a hard ... variable "p" with enough space to store a struct plot ... be. By placing global variables at specific points in memory ... memory allocated for those global variables can be overlapped, reducing the ...
    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…

    ... " are copied into p_GetPlotCoord()'s variables "row" and "col" and then ... of the "r" and "c" variables outside the function.

    space, but I wanted to test ... centred horizontally and leaving more space below than on top for ...
    Alcoholics Anonymous Alcoholics Anonymous August 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…

    ... in case some of the variables go down in value (For ... can use the freed up space.

    Thanks Again, DP
    Digital Prawn Digital Prawn August 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…

    ... pacman game, because with the space saved on that one, it ... (with the use of direction variables, rather than just "brownian motion ...
    Digital Prawn Digital Prawn August 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…

    ... pacman game, because with the space saved on that one, it ... (with the use of direction variables, rather than just "brownian motion ...
    Einar Saukas Einar Saukas August 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…

    ... found it uses slightly less space to DIM a seperate array ... is ripe for optimisation. New variables 'q()' and 'd' were introduced ...
    Digital Prawn Digital Prawn August 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…

    ... (Probably half of these new variables can be eliminated)
    ... wastes many spaces expanding the variables back out to two dimensions ... limit!

    (extra variables in this version:-
    f ... most practical (uses the least space), and seems more fun to ...
    Digital Prawn Digital Prawn August 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…

    And here is the finished version:-

    [url]http://www.mediafire.com/?bxm3yydyzpe[/url]

    It is now impossible to trap the dog under the gate!

    The method I am using to check for the dog under the gate is not how I'd ...
    Digital Prawn Digital Prawn August 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…

    ... o$. You don't need variables q and r. You don ... only need to print one space behind the ball, which saved ...
    Digital Prawn Digital Prawn September 2007 Development
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