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<1…891011121314…34>
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    Write in 48 basic this program:

    10 FOR i=10 TO 1
    20 REM : NEXT i: PRINT 48
    30 PRINT 128

    On screen will printed 2x 128 value
    velesoft velesoft January 2009 Sinclair Basic
  • How does the Speccy deal with the Character Set?Hi All, Can anyone spare a little time to explain to me the basic Assembly method of how the Speccy interprets and retrieves Characters to print on …

    ... character to print,
    ... screen addres
    LD A,"H" ;fetch the character to print ... LD (DE),A ;screen addr
    INC ... to character positions on screen).
    Note ...
    roko roko February 2009 Development
  • 25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…

    ... 2000)
    * Magical Musical Mystery Screen (2001)
    * Nazomi Invaders ... Riptoff 2 (2000)
    * SK Print (2000)
    * Suggested Advanced ... to support 32 colours on screen using 4 CLUTs ...
    * Suggesting ON ERR support in ResiDOS< ...
    Jumping Stack Jumping Stack February 2009 Sinclair Miscellaneous
  • Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…

    ... 15000 T for drawing sprites directly into screen (probably much more if ... so ask him)

    on other side, i believe that ... Dare III, Savage really constructs screen on char basis for every frame ... background a and draw tiles on edges.

    i ...
    Fikee Fikee May 2009 Development
  • Getting started with asm Speccy codingSomeone on another forum I read has asked for good Speccy coding resources. I thought it would be great to link him to a simple tutorial about how to…

    ... .actualy I never printed some on screen in MC
    I see ... can start your code with PRINT USR.

    Otherwise:< ... A
    CALL #1601 = lower screen

    LD A,2 ... and will ALWAYS set upper screen!

    [code]
    ; -----------------< ...
    Dr BEEP Dr BEEP May 2009 Development
  • Image to ZX Spec 1.0.4 ReleasedImage to ZX Spec 1.0.4 has been released and finally has Ordered Dithers. You can get it at the usual place: [URL="http://silentdevelopment.blogspot…

    ... size you having it printed on?[/QUOTE]

    I went ... done as a 15x10 poster print before deciding to get it ... if you go to poster print the poorer the conversion, the ... devised) which was quite nice on screen, but something like the original ...
    brownb2 brownb2 July 2009 Announcements
  • BASin Loading ScreensHi all, I've got a code for a program from the 2nd Issue of INPUT magazine and I wanted to create a loading screen for it. I've tried making the scre…

    ... empty place in your "Loading Screen" and place the "program:" name ... pixel empty in your loading screen when editing.

    then ... 7: CLS
    20 LOAD ""SCREEN$
    30 LOAD ""

    PRINT AT X,Y; Where X= row, Y= column number on screen.
    Arda Arda July 2009 Sinclair Basic
  • BASin Loading ScreensHi all, I've got a code for a program from the 2nd Issue of INPUT magazine and I wanted to create a loading screen for it. I've tried making the scre…

    ... empty place in your "Loading Screen" and place the "program:" name ... pixel empty in your loading screen when editing.

    then ... 7: CLS
    20 LOAD ""SCREEN$
    30 LOAD ""
    < ... PRINT AT X,Y; Where X= row, Y= column number on screen.[/QUOTE ...
    speccyfan1945 speccyfan1945 July 2009 Sinclair Basic
  • Has any programmers recently pushed the spectrum to the limits?Hi there. Ive just discovered this great forum and I was brought up with the speccy 16,48 and then 128k. Im just wanting to know if there are any re…

    ... 't mind storing the attributes directly as code, modifying the code ... as a 48k Spectrum. (Based on code from "Advanced Spectrum Machine ... instructions so that the data on screen changes
    LD A,(TST1 ... it to change what goes on the screen
    LD DE, 1008H ...
    AMW AMW August 2009 Development
  • Monkey Island On Speccy...I would love to see Monkey Island on the speccy...think it can be done...not as much detail or graphics...but along the same story lines.... What ot…

    ... text adventures, so people engaged directly with the puzzles rather than ... adventures. You could have an on screen inventory quite easily. easy enough ... to do pics for each screen.

    and you ... moving a mous around the screen looking for something to ...
    mile mile December 2009 New game ideas
  • Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…

    ... except one line of information on every function.
    ... to print highscore text at a specific location on screen. ... There are different screen modes, different ... question still open on PRINT AT equivalent function on small c. ...
    Arda Arda February 2010 Games
  • tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …

    ... uses a differential screen update that only draws character squares that ...
    When a sprite character on screen is drawn, de is loaded ... struct_sp_cs on the stack. The sprite draw code draws the ... is then drawn to the screen. Intermediate results are never ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Development
  • Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …

    ... to design a system that draws 3 maps simultaneously - the ... : sprites can work aligned on 8 pixel boundary in horizontal ... direction and on 1 pixel in vertical ... them, shifting them, placing them on screen. in such situation introduction of ...
    Fikee Fikee March 2010 Development
  • Broken or upgraded ZX Spectrum 48kHello First i want to say hello to everybody. I have a new ZX Spectrum 48k in my collection. Seller said that it is broken (no picture). I have this…

    ... Also see the voltage rating on it - diodes don't ... a type number like 4148 on their body.

    ... URL] on this machine first (take composite video signal directly from where ... with 'junk' on screen? Some other color border with 'junk' on screen? Also see ...
    RetroTechie RetroTechie April 2010 Hardware
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... small self-contained Print routine that doesn't rely on ROM calls ... and INK vales are currently on screen (or are applied to it ... looking for is a simple Print Text routine and nothing else ... Effects......

    [CODE];Bold Print
    p_print: ld a,(hl ...
    Turkwel Turkwel April 2010 Development
  • Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky

    ... part re-routed to come directly from external DC voltage, and ... 18V), and a ripple voltage on unregulated DC supply doesn't ... video circuitry (no visible effect on screen output, that is). To go ...
    RetroTechie RetroTechie April 2010 Hardware
  • z80 emulator with converter ?Hi i am finding the old z80 emulator v2 or v3, dont remember. Some of these versions have the snapshopt to 1.45 converter that allows us to conver t…

    ... the .sna loader if works directly on the Spectrum. Where i can ... changing a part of the screen and loading the code. After ... loading the registers from the screen are set and a jump ...
    Dr BEEP Dr BEEP May 2010 Sinclair Miscellaneous
  • +3 ProblemsI have been having a few problems with my +3 and I am wondering if anyone can help or give me some advice: 1. I have 2 blank disks which I have save…

    ... your TV "show signal on SCART connector". When 0 ... input" when you switch on external equipment like VCR ... containing an On Screen Display menu. Using signal on pin 16 ... signals. SCART pin 16 draws more current (75 Ohm ... 2 pins with +12V on it, both connected ...
    RetroTechie RetroTechie May 2010 Hardware
  • Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…

    ... if you want to print with monospace font or ... now on the list are:
    1> print a ... > A good compromise on size and speed for a ... see, lately, I'm obsessing on screen handling stuff. *heh* I ... routines, and I'm wanting screen shinies!

    ...
    Gedlion Gedlion June 2010 Development
  • Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…

    I adapted today Odins Proportional Print for ZXBC as SUB. It can write anywhere on screen, but without attributes. The sub is in the Boriel forum.
    LCD LCD June 2010 Development
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... the basic i tried to print the gdu A and i ... i see the character painted on screen.
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... make...

    [QUOTE=print on screen]define_UDG_a
    ld hl,$4000 ... the character $4000 paint in screen
    ld b,8 ... address, inc h to paint on screen
    djnz loop_udg
    ... address, inc h to paint on screen
    djnz loop_udg
    ...
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... address, 'inc h' to paint on screen
    djnz loop_udg_b
    ret ... content of the udg A directly to the udg B just ...
    arfgh arfgh June 2010 Sinclair Basic
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... else on screen when you move the cursor, no need to print the ...
    Shiru Shiru June 2010 Sinclair Basic
  • Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…

    ... , one for each character on screen managed by SP1). This ... As the screen contents change (sprite move, background print, etc) the ... can be moved anyplace on screen under program control. For ... be moved anyplace on screen individually under program control.
    Alcoholics Anonymous Alcoholics Anonymous June 2010 Development
  • Did the average Spectrum programmer really even try?I've been thinking about this recently, I'm always hearing Amstrad, and MSX users moaning about how unfair it was that they got "lazy Spectrum ports"…

    ... on the systems they were ported to. The Spectrum's directly addressed screen ... or CPC had direct screen access and the CPC ... force in graphics programming on the Speccy. But you ... the screen is full of things going on the ... RAM used by the screen. It's simply that ...
    chev chev July 2010 Games
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