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<1234567…34>
  • Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…

    How much is the shadow screen used in 128k commercial software?< ...
    spodula spodula January 2011 Hardware
  • 128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…

    When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without cancelling the shadow?
    Unique Unique February 2005 Development
  • 128 BASIC running in softwareIt is possible to run 128 BASIC in two paged RAM banks, but it's not very stable.

    It is possible to run 128 BASIC in two paged RAM banks, but it's not very stable.
    chev chev April 2006 Sinclair Basic
  • 128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…

    ... code];; load a 4000 byte BASIC program
    ld ix ...
    Ta-da, BASIC program loaded as a headerless ... one tries this from 128 BASIC, it all falls in ... crash. Loading BASIC as code from the 128 BASIC interpreter does ... if there's a 128 BASIC-compatible way of ...
    stephenw32768 stephenw32768 September 2013 Development
  • 128K shadow screen?Hi How does the shadow screen feature work , and how can it be used?

    Hi

    How does the shadow screen feature work , and how can it be used?
    micken micken May 2014 Development
  • How do I use colour control codes in 128 basic?Just started using a toast rack in 128 basic and I am struggling to understand how to easily create coloured characters and graphics in a print state…

    Just started using a toast rack in 128 basic and I am struggling to understand how to easily create coloured characters and graphics in a print statement when the extend mode does not work in 128 basic. Can anyone enlighten me please?
    Fieldy Fieldy April 2017 BASIC
  • 'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…

    ... write directly to whichever screen was paged into upper ... the accessibility of the "shadow screen" from BASIC.

    ... I had another thought on speeding up the "screen ... BASIC program). I could presumably use some SAVE "file" SCREEN$ ...
    Digital Prawn Digital Prawn August 2008 Sinclair Miscellaneous
  • Basic Screen Shadow QuestionHello, I've been porting a game to the Spectrum from another platform. So far so good and I have per pixel screen scrolling working really nicely …

    ... using the 128K's shadow screen area and I can ... simple, as the following basic code doesn't work.< ... writing to and displaying the shadow screen
    ld b, 7 ... br /> ld c, 8 ; Screen Shadow
    call change_bank
    ...
    pointblnk pointblnk August 2016 Development
  • alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…

    ... to make it use the 128 shadow screen by default. The ROM is ... for BASIC
    the shadow screen is selected by default
    the shadow screen is ... now write to the upper screen area, including PLOT
    < ... to only page in the screen when it was being written ...
    chev chev October 2008 Sinclair Basic
  • Need some help making a BASIC gameI'm creating a text adventure in 128 BASIC (I don't like using the 'keywords' in 48 BASIC - It's slow and annoying!) called "The Legend of The Red Dr…

    ... creating a text adventure in 128 BASIC (I don't like using ... the 'keywords' in 48 BASIC - It's slow and annoying ... also created a nice loading screen for the game using ZX ... have multiple action descriptions, but BASIC will only let me use ...
    pottyboy pottyboy November 2004 Sinclair Basic
  • SAVE the complete screen in BASICHow can I save the COMPLETE screen (with the last two lines) in BASIC? If I type SAVE "XXXX" SCREEN$, then comes the message "Start tape, ..." and th…

    How can I save the COMPLETE screen (with the last two lines) in BASIC?
    If I type SAVE "XXXX" SCREEN$, then comes the message "Start tape, ..." and the last two lines are destroyed!
    wilko0070 wilko0070 September 2005 Sinclair Basic
  • Saving a complete SCREEN$ in BASICI'm trying to save a SCREEN$ to a tape file (basically the original data is in a .tzx file that I'm trying to save in a .tap format) but the problem …

    ... 'm trying to save a SCREEN$ to a tape file (basically ... I try to save from BASIC, the "Start tape and press ... couple of lines of the screen. Is there a way of ... saving the complete screen without losing any of the ...
    Arjun Arjun April 2008 Sinclair Miscellaneous
  • Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …

    ... New"][COLOR="Green"]On the 128 and +2, memory ... Select normal (0) or shadow (1) screen to be displayed. The ... bank 5, whilst the shadow screen is in bank 7. ... 3DOS
    ROM 3: 48 BASIC
    Bit 3: Disk ... I'm using 48K Basic together with an interrupt ...
    bverstee bverstee April 2010 Hardware
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun ... copy a SCREEN$ (or any segment of memory) in ZX BASIC without ... , then press "j", the screen will erase and then will ... /> 35 PRINT #0;"load a SCREEN$ then press ""j"""
    ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Display half a screenWorking in 128 Basic and saving screens to memory via - SAVE! "image" SCREEN$ . Is it possible to display just the top half (or the bottom half) of t…

    Working in 128 Basic and saving screens to memory via - SAVE! "image" SCREEN$ . Is it possible to display just the top half (or the bottom half) of the screen ? (leaving the bottom half of the previous screen visible). Thanks in advance.
    Nonsense in BASIC Nonsense in BASIC October 2011 Sinclair Basic
  • 128 fontWhat happens when you change the font in 128 mode? I have a new font saved at 60000 with 23606 and 23607 poked with 96 and 233. The characters can b…

    ... you change the font in 128 mode?

    I have ... be printed on screen, but when you go into 128 basic the listing ...
    daveysludge daveysludge October 2014 Development
  • 128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…

    ... br />
    On the 128 and +2, memory is entirely ... normal (0) or shadow (1) screen to be displayed. The ... bank 5, whilst the shadow screen is in bank 7. ... system; ROM 1 contains 48k BASIC.
    Bit 5 If ... typical bank switch on the 128 is:
    LD A ...
    Fikee Fikee February 2006 Development
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... disk file, select bank of shadow screen, load ram disk file into ... it, activate shadow screen, erase ram disk file, paint ... do double buffering using only Basic instructions, and maybe at speed ... , it does not work in 128 nor in plus3dos. At least ...
    NotFound NotFound November 2006 Sinclair Basic
  • Galaksija emulator for ZX Spectrum +3/+2A(black)This is a NEW program/utility/game pack for ZX Spectrum. It is basically an emulator of an ex-Yugoslav computer "Galaksija" which is also Z80 based. …

    ... />
    To page the normal BASIC ROM back in:

    128's shadow screen for the display. That ...
    Tom-Cat Tom-Cat March 2007 Emulators
  • Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…

    ... 128 version then you'll be able to run SE Basic ... IV on a standard 128 and get ... smoth scroll you need a shadow screen, so you have 8 ... to update the whole screen. Without shadow screen you have to paint ... sync pulse and the screen area, and reduce the ...
    antoniovillena antoniovillena July 2013 Development
  • coding guruOk I'm looking for a to help me in my quest to do my first proper game. The 80's child in me thinks he can do it, But the 2013 man in me knows zip. …

    ... ]1 page will hold a 128*128 map or more if I ... text
    1 page for screen swops
    1 page for ... 're using it as a shadow screen.

    I would use ... running on a ULA 128 or an ASIC 128 (banks 1, 3 ... drawing the graphics, and ZX BASIC or z88dk for the game ...
    chev chev September 2013 Sinclair Miscellaneous
  • Basic Screen Shadow QuestionHello, I've been porting a game to the Spectrum from another platform. So far so good and I have per pixel screen scrolling working really nicely …

    ... a problem for the normal screen since they are likely ... not the case with the shadow screen at bank 7, the attributes ... all zeros. Hence the black screen I suppose... Also look ... br />
    Display shadow screen, page in normal screen at #C000:
    the ...
    Hikaru Hikaru August 2016 Development
  • Basic Screen Shadow QuestionHello, I've been porting a game to the Spectrum from another platform. So far so good and I have per pixel screen scrolling working really nicely …

    ... not the case with the shadow screen at bank 7, the ... all zeros. Hence the black screen I suppose... [/quote]
    128 ROM system/BASIC is often a ... interrupt handler of the 128 ROM is flipping pages ... used to program in BASIC back then. I hadn ...
    pointblnk pointblnk August 2016 Development
  • ANN: Spectaculator 5.1Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows 95, 98, ME, NT 4, 2000 and XP. Spectaculator emulates the 16K/48K/128K/+2/+…

    ... /> o Added preliminary Pentagon 128 support (no Beta 128) to run demos ... port of the Spectrum
    128/+2/+2A/+3. Output can ... can LLIST or LPRINT from 128 BASIC straight
    to a real ... LLIST or LPRINT from +3 BASIC straight to
    a real ...
    Jon Needle Jon Needle July 2003 Emulators
  • Invisible loading screenI can't remember how this is done (I did it years ago but can't remember how). When loading a screen$ from basic you can see the lines being display…

    ... />
    When loading a screen$ from basic you can see the lines ... />
    you can set the screen black so the lines are ... colours attributes are loaded (using basic, not machine code).

    Unique Unique March 2005 Development
  • Disable BREAK 128 basicDoes anyone know how to prevent BREAK in 128k basic?

    Does anyone know how to prevent BREAK in 128k basic?
    mgmetro mgmetro July 2005 Sinclair Basic
  • 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…

    ... of +3DOS interfere with the "shadow" screen area at the start of ... defining whether we started from BASIC or directly (so i know ... i safely "exit" to the basic editor?

    General Questions ... to write a "full 48k" basic program?

    Whilst ...
    rbsfou rbsfou January 2007 Development
  • Problem with spectaculator 6.30 "load from audio soruce"Hi all :). I'm new here and with spectrum emulation :). I love old computers i have in home amiga 500, atari 65xe and commodore 64, and i dont have s…

    ... i use tape loader on screen appear cyan and red colours ... signal "piiiiiiiiiiii" red and cyan screen changing fast ^.^ like when loading ... bars !!!!! i loading program i 128 basic ;P. that blue-yellow bars ...
    Zel93 Zel93 December 2007 Emulators
  • Spin problems/issuesI am running Spin 0.666 and have noticed a few issues (some are bugs, some might be just me). I am using Vista sp1 (yeah I know!), and I've seen Dunn…

    ... change in the emulator's screen display. However the debugger ... because it allows the screen to update itself to ... select Cut.
    Highlight the screen$ header. Right click, select Insert ... Multiface peripheral is ticked. Enter 128 basic and generate a NMI. ...
    Jimmy Jimmy April 2008 Emulators
  • CGC 2008 entry... help wanted please!Hi, I've written a BASIC game for the CGC2008. With a limited understanding of the hardware, I've written it in 128 BASIC, but have saved it out as …

    ... />
    I've written a BASIC game for the CGC2008. With ... , I've written it in 128 BASIC, but have saved it out ... out with a real loading screen and so on, just so ...
    Shaun.Bebbington Shaun.Bebbington August 2008 Sinclair Miscellaneous
<1234567…34>

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Related Threads

  • Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software?<br /> <br /> I ask because I am looking at putting 128k of memory in the 48k setup I …
  • 128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this:<br /> <br /> [code];; load a 4000 byte BASIC …
  • Basic Screen Shadow QuestionHello,<br /> <br /> I've been porting a game to the Spectrum from another platform. So far so good and I have per pixel screen scrolling working re…
  • What is difference between "128" and "128+"?What is the difference between a "Spectrum 128" and a "Spectrum 128+" ??<br /> <br /> And I am not talking about the different looking +2's, etc.<br …
  • 128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
  • Disable BREAK 128 basicDoes anyone know how to prevent BREAK in 128k basic?
  • SAVE the complete screen in BASICHow can I save the COMPLETE screen (with the last two lines) in BASIC?<br /> If I type SAVE "XXXX" SCREEN$, then comes the message "Start tape, ..." …
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  • 128 BASIC running in softwareIt is possible to run 128 BASIC in two paged RAM banks, but it's not very stable.

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