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<1…13141516171819…34>
  • ZX Spectrum Z80 Development Environment on WindowsHi Folks, Just wondering what the recommendation is for a ZX Spectrum Z80 Development environment on Windows? Getting fed up with hand coding Z80…

    ... parts of source code, local variables inside modules to hide from ... ]

    It doesn't save you anything does it? A ... /> As to what does it save? Nerve cells, easily. And some ...
    Hikaru Hikaru August 2017 Development
  • Numeric arrays: floating point or integer?I've just started programming a game in Sinclair BASIC (see the thread 'UFO Defence Command' in game ideas, although I'm going to call it ZXCOM ;) ).…

    ... memory. If so, can you save more space again by defining ... the arrays; then using SAVE "" DATA; then deleting the original ... LOAD "" DATA to populate the variables.
    Georgeo Georgeo September 2017 Sinclair Basic
  • Numeric arrays: floating point or integer?I've just started programming a game in Sinclair BASIC (see the thread 'UFO Defence Command' in game ideas, although I'm going to call it ZXCOM ;) ).…

    ... memory. If so, can you save more space again by defining ... the arrays; then using SAVE "" DATA; then deleting the ... LOAD "" DATA to populate the variables.[/quote]

    In a ... code; this will work because variables are saved along with the ...
    The_Bert The_Bert September 2017 Sinclair Basic
  • Disassembly starting from a tape fileFollowing on from the Atic Atak redefining keys thread, I was wondering how you'd go about disassembling the code from scratch. The approach used in …

    ... /> It can help if you save emulator processing into memory map ... blocks), executed (code), read/written (variables), executed/written (SMC). Later you ...
    Bedazzle Bedazzle September 2017 Development
  • How do I convert a .z80 snapshot to a tape file?I've been fiddling with this for a while but can't get it to work reliably. I use Marvin to write short BASIC and assembly programs that uses .z80 in…

    ... & when you type SAVE "whatever" LINE whatever, that ... LOAD ""

    Save the loader with SAVE "whatever" LINE 10, when ... first to delete all the variables , otherwise they'll be ... Tape recording -> Eject Save tape, reset the emulator, insert ...
    textvoyage textvoyage November 2017 Emulators
  • Clever, yes. Useful? Not so sure. Re: LOAD ""CODE gamesI was always curious about how the (few) games that require that you type LOAD ""CODE, rather than the usual LOAD "" worked, but only just now decide…

    ... phone.

    SAVE "name" LINE x will save your program and ... is the program and user variables (if they were defined).
    - You can alter system variables so BREAK won't work ... ).
    - If you do a SAVE ... CODE 16384,49152 your program ...
    Zup Zup November 2017 Development
  • i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…

    ... 's easier to manage; fewer variables. Also, if the scenery is ... array 10 high - it'll save memory.
    joefish joefish January 2018 Development
  • Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…

    ... that if I need to save a screen that has pixels ... $(b$,s$)=""
    * initialise the variables in the FN space: LET ...
    Battle Bunny Battle Bunny January 2018 Sinclair Basic
  • Need Some Basic HelpHi all, I’ve decided to give programming in Spectrum Basic a go again (bit of nostalgia trip!) and I’m trying to develop a CYOA style game. How…

    ... yes, the Spectrum you can save strings in separate loads but ... /> The easiest way is to save your file as a .txt ... by using A$ or other variables to store your story texts ... still need some to store variables. Leave also another 1K of ...
    Timmy Timmy March 2018 Sinclair Basic
  • Need Some Basic HelpHi all, I’ve decided to give programming in Spectrum Basic a go again (bit of nostalgia trip!) and I’m trying to develop a CYOA style game. How…

    ... to be there, the system variables, the screen memory, the UDGs ... someone RETURNs), and all the variables (yes, all of them).

    And that would save you a long L$ for ...
    Timmy Timmy April 2018 Sinclair Basic
  • Tape to +3 disk transferWhen the first basic part was merged from tape, to be saved to disk, and it looked like this: [img]https://i.imgur.com/UQx1hc2.jpg[/img] how di…

    ... has the paging routines), system variables and BASIC areas... no surprise ... :": LOAD "" CODE 32768
    30 SAVE "a:nifty.scr" CODE 32768 ... ,6912
    40 SAVE "a:nifty.c" CODE 40384 ...
    Zup Zup February 2019 Sinclair Basic
  • Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…

    ... Rad
    LD (DBCOORDS),BC ; Save start coords
    LD E ... ,A ; Save radius
    CP 35
    PUSH AF ; Save radius
    LD A,(DBCOORDS ... 0
    ; Storage for temp variables
    ;
    PLOTSUB LD ...
    dbolli dbolli March 2019 Development
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... .? My understanding was that these save RAM (particularly in 1K scenarios ... you using POKE/PEEK for variables for improved speed?

    patters patters April 2019 Brand new software
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... My understanding was that these save RAM (particularly in 1K scenarios ... using POKE/PEEK for variables for improved speed?[/quote]< ... variable at the end of variables stockpile, resulting much slower ... (POKE&PEEK) system variables for speeding up the program ...
    IvanBasic IvanBasic April 2019 Brand new software
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... variable at the end of variables stockpile, resulting much slower to ... ]Does this definitely work to save RAM though? I read somewhere ... in a$,b$,c$,d$ variables. This is much fast that ...
    patters patters April 2019 Brand new software
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... position of i$ into the variables area. I am changing it ... "]Does this definitely work to save RAM though? I read somewhere ... $ 32+CHR$ 0, you will save around 10 characters per row ... 9000) I put the frequent variables first, then loading the z ...
    IvanBasic IvanBasic April 2019 Brand new software
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... $ 32+CHR$ 0, you will save around 10 characters per row ... . If only we could escape variables in Sinclair BASIC and have ...
    patters patters April 2019 Brand new software
  • TZX/Taper headachesI've been doing a stocktake of all my Spectrum stuff, most of which I bought in a job lot a few years back, and there's a whole load of covertapes in…

    ... . There's just too many variables to consider! :P [/quote]
    save that to an actual tape ...
    The Mighty Dopethrone The Mighty Dopethrone May 2019 Games
  • How much can you get into 48k?Todays experiment was to see how long, how much text, a PRINT statement will hold. I filled it up with * and counted them and got 689 chrs. Almost 22…

    ... I would say with using variables and also having the text ... put your text in string variables. You could of course just ... memory easily, you need to save the array, and avoid using ...
    dmsmith dmsmith August 2019 BASIC
  • How much can you get into 48k?Todays experiment was to see how long, how much text, a PRINT statement will hold. I filled it up with * and counted them and got 689 chrs. Almost 22…

    ... program including all the variables :-(

    To SAVE a BASIC program ... as an autorun program, use SAVE “myprog” LINE 10
    This ... can be saved by using SAVE “name” DATA a$()
    And ... to have a normal string variables and a string array with ...
    1024MAK 1024MAK August 2019 BASIC
  • zx81 loading and saving codei cant get registered with the zx81 forum, so i thought id try here. how is this done? ive tried loading and saving using code xxxxx,xxxx but nothing…

    ... just save the BASIC program, but also some of the system variables ... the current variables.
    There is no command to save machine code ... , data, variables, or the screen ...
    1024MAK 1024MAK October 2019 Chit chat
  • zx81 loading and saving codei cant get registered with the zx81 forum, so i thought id try here. how is this done? ive tried loading and saving using code xxxxx,xxxx but nothing…

    ... be stored is in the variables area. To do this you ... the first item in the variables area. This will be true ... stored machine-code in the variables area, any future use of ... machine code storage. It WILL SAVE and RE-LOAD, again provided ...
    Luny Luny October 2019 Chit chat
  • zx81 loading and saving codei cant get registered with the zx81 forum, so i thought id try here. how is this done? ive tried loading and saving using code xxxxx,xxxx but nothing…

    ... be stored is in the variables area. To do this you ... the first item in the variables area. This will be true ... stored machine-code in the variables area, any future use of ... machine code storage. It WILL SAVE and RE-LOAD, again provided ...
    moggy moggy October 2019 Chit chat
  • zx81 loading and saving codei cant get registered with the zx81 forum, so i thought id try here. how is this done? ive tried loading and saving using code xxxxx,xxxx but nothing…

    ... be stored is in the variables area. To do this you ... the first item in the variables area. This will be true ... stored machine-code in the variables area, any future use of ... machine code storage. It WILL SAVE and RE-LOAD, again provided ...
    Luny Luny October 2019 Chit chat
  • New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…

    ... couple of variables have been combined into one to save a few ...
    Ast_A_Moore Ast_A_Moore April 2020 Brand new software
  • Getting Android emulators for rhe ZX Spectrum to work with "Ye Olde" 9 pin "D" joysticks circa 1984!I suppose people could say "Why Bother" ? Well at least I have an answer (I have a lot of these old joysticks!) . So if I am minded to try and get…

    ... also a huge range of variables with in each part eg ... laptop) 4) Spectaculator can only save one joystick configuration at a ...
    harriusherbartio harriusherbartio June 2020 Emulators
  • Pseudocode for CIRCLE algorithm?Can anyone provide me with the pseudocode for the Spectrum's CIRCLE algorithm? My machine code knowledge isn't up to reading the ROM routine. I'm try…

    ... Rad
    LD (DBCOORDS),BC ; Save start coords
    LD E ... ,A ; Save radius
    CP 35
    PUSH AF ; Save radius
    LD A,(DBCOORDS ... 0
    ; Storage for temp variables
    ;
    PLOTSUB LD ...
    dbolli dbolli August 2020 BASIC
<1…13141516171819…34>

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