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  • Help me with this Stack overflow Freak Show.I am asking a simple question on Stack overflow and once again, the closed minded morons a pointing and tutting. I'm asking a question about C point…

    ... the compiler sets aside enough space for to hold a memory ... (called reference types). This allows variables to have more than one ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Chit chat
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... font of 256 are 32 (space) to 127 so 95 characters ... to it via the System Variables (23606 & 23607).
    rich_chandler rich_chandler February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    The system variables are listed on pages 127- ... moved down to make more space between UDG & P_RAMT to ... , or this one linked in Variables.txt:

    [url]http ...
    Battle Bunny Battle Bunny February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... =Battle Bunny;751351]The system variables are listed on pages 127 ... moved down to make more space between UDG & P_RAMT to ... , or this one linked in Variables.txt:

    [url]http ...
    Speccy_James Speccy_James February 2014 Development
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... variable space. I had a fun moment when it corrupted the variables ...
    Gedlion Gedlion March 2014 Brand new software
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... free space in SE ... ;
    ; System variables
    ;
    ... /> ;
    ; System variables offsets
    ;
    ...
    Dan Antohi Dan Antohi April 2014 Hardware
  • DIM and FOR, NEXT loopHi there. I'm making a program with 100 items on screen using dim and a for next loop. The thing is, each time I want to manipulate the items I do an…

    ... listing.
    [*]Declare frequently used variables at the start of the ... but not in size. (The space for a simple string is ... (VARS) in the case of variables), so can be considered for ...
    Battle Bunny Battle Bunny May 2014 Sinclair Basic
  • Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …

    Try this optimised multi-coloured border-checked wraparound example:
    [code]
    3 BORDER 1: PAPER 5: CLS: PAPER 7:
    FOR y=1 TO 20: PRINT AT y,1;TAB 31: NEXT y
    10 LET X=10: LET Y=10: DIM i$(1): LET w=x: LET z=y:
    LET a ...
    Battle Bunny Battle Bunny June 2014 Sinclair Basic
  • Popular Computing WeeklyHope someone can help me, I've been typing in a whole heap of early Type-ins for the Amstrad CPC 464 and have typed in a program, though it's not wor…

    ... 'm placed Semi-Columns after variables in the Tone Envelope Menu ...
    CP/M User CP/M User June 2014 Chit chat
  • UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…

    ... remember that has to allow space for any variable data the ... safely POKE the UDG address space.

    Just remember:
    space will be reset to 0 ... the screen and erases all variables before adjusting RAMTOP.

    joefish joefish June 2014 Sinclair Basic
  • UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…

    ... method wastes increasing amounts of space (with the duplicates of the ... 's not looking up any variables.

    If two or ...
    Battle Bunny Battle Bunny June 2014 Sinclair Basic
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... reclaims the old space and reallocates new space at the end ... also reclaim and reallocate the space.

    There's ... declarations or assignments of new variables with DIM, LET, FOR, ... trap subsequent references to those variables if I keep (VARS) = ( ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... say 5 characters would have space for 220 variable counters, which ... features so that all the variables are referenced.

    To ... declare a BASIC program's variables (ie. in decreasing order of ... list of a program's variables.

    [code]
    ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... initial declarations for the listed variables from the source program ... separate "InitVARS" program with the variables being declared in order of ... the source program to allocate space for the VARS area and ... all of the program's variables with one LOAD statement ...
    Battle Bunny Battle Bunny August 2014 Sinclair Basic
  • New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…

    ... can read/write the 4MB space.
    [/LIST]
    Or even ... allocates additional space after the new ZX Interface 1 system variables) and ...
    Fruitcake Fruitcake August 2014 Hardware
  • Can anyone explain this result?This little sub-routine isn't always doing what it's supposed to; ie. transfer the value from SEED to VARS. Can anyone explain why? I've put in the P…

    ... LET (VARS)=(DATADD)+1 (show variables)
    finish: LET (VARS)=(E_LINE ... )-1 (protect variables)[/code]

    The ... updates the 14 system variables VARS->STKEND if ... calls MAKE_ROOM to allocate space in WORKSP for the ...
    Battle Bunny Battle Bunny August 2014 Sinclair Basic
  • games that need mouse supporthas anyone ever tried to hack in mouse support to existing speccy games? HeroQuest needs it badly, the cursor moves so slowly that the game isn't fu…

    ... :-)

    Cursor use 4 variables

    X-AXIS:

    Space for mouse driver is on ...
    velesoft velesoft August 2014 Games
  • Chuckie Ess 2 tap doesnt work[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000959[/url] It loads, you press a key and it returns to Basic! Anyone any idea why or got a …

    ... m/code (in the free space at the top of RAM ... chance, while executing the system variables data as though it was ...
    Battle Bunny Battle Bunny September 2014 Infoseek database
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... youtube]


    [B]Variables and Parameters[/B]
    At ... designed a message, and provisioned space on the screen for the ... from cartridge, so press SPACE followed by ENTER to use ... br /> Again, usual behaviour, press SPACE followed by ENTER for the ...
    jp jp November 2014 Announcements
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... /> We'll then alter the variables that dictate where the message ... br />
    Once all the variables are configured, we save (and ... simple saver filename - just press SPACE for the default REM SV ... simple loader filename - again, press SPACE for the default REM.O ...
    jp jp November 2014 Announcements
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... first set some environment variables to point at the ... hash); // redefine graphic associated with space character

    sp1_Invalidate(& ... does not reserve any memory space at all.

    variables) so globals will have ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... stack or messed with system variables you probably can't return ... with basic's stack or variables; you could try moving up ... space_expand; // addition width added to space characters
    uint16_t reserved; // unused ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... that area so the 3k space only includes code and data ... code to zero the BSS variables on startup. sdcc does this ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • How big is the program?I've got the following one line program (running in a 48K Spectrum emulator) [CODE]1 input n:let n=n-int(n/4)*4:print "1 i -1-i"(n*2+1 to n*2+2)[/CO…

    ... in post#1 calculates the space between PROG & E_LINE; ie ... BASIC listing) & VARS (the variables) areas. If the program has ... VARS will depend upon which variables have been referenced and what ...
    Battle Bunny Battle Bunny March 2015 Sinclair Basic
  • Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …

    ... full 64K of addressable memory space to avoid having to ... memory reserved for the 'System Variables', but these just affect ... the variables for your BASIC program, and the stack space used ... .

    Other system variables (look in the original orange ...
    joefish joefish August 2015 Sinclair Basic
  • Game development guidesHello all, I want to get into game development for the ZX Spectrum and would like to know where I can find some helpful guides. I've looked around t…

    ... you assign your code and variables to the proper sections, the ... microcontrolles have very limited stack space).

    To help cope ...
    Alcoholics Anonymous Alcoholics Anonymous August 2015 Development
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... variable and therefore two different variables are being stored

    space.
    rst 16 ; delete old ...
    antonyjones101 antonyjones101 September 2015 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ...
    org $0000 ; page zero variables

    string rmb 2 ... character set data starts at space, ASCII 32
    tax ; save ...
    JamesD JamesD September 2015 Development
  • Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…

    ... block, we want the empty space within to be utilized for ... in there', perhaps some unaligned variables or a small routine, determined ...
    Hikaru Hikaru October 2015 Development
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