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<1…17181920212223…34>
  • 2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…

    ... LD A,B ; grab the first colour
    LD B,16 ... ; draw 2 bytes worth per line
    LD BC,16 ; ... made - oooohhh a tad faster at the expense of 14 ...
    MatGubbins MatGubbins September 2016 Development
  • thinking on creating an arcade... somethingHi to all For a while i have been thinking on creating an Arcade Cabinet, but the cost, time and space necessary place it in hold. Recently whi…

    ... easily, which then degrades it faster, since it swells up, then ... to be 0.1 mm line thick so that the laser ... parts fit together.
    .
    First I suggest you understand how ...
    RMartins RMartins September 2016 Chit chat
  • Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …

    ...
    // Trap the KEY-LINE routine

    PutWord ... file loading
    // First, a trap to enable ... PutWord(@Memory[$1F02], $00ED); // GOSUB
    PutWord(@Memory[$1F2E], $ ... );

    // Multi-line program pasting, anyone?

    Dunny Dunny October 2016 Development
  • AY Sound Effects from WAVI'm wondering if someone has crossed this bridge already. There are a bunch of sampled sound effects in wav form that need converting to the AY ch…

    ... total 3548 bytes. On first listen some of the speech ... /> 100Hz = frame interrupt + 1 line interrupt
    150Hz = frame interrupt ... + 2 line interrupts
    [/quote]
    < ... help to go a bit faster but even more important ...
    Alcoholics Anonymous Alcoholics Anonymous October 2016 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... this method only works the first time you use NIRVANA+, but ... similar to what I tried first, except I [b]NIRVANA_printC[/b ... 8x8s are repeated elsewhere at line offset +4). I wasn't ... , but it seems to be faster than decompressing a bitmap with ...
    colonel32 colonel32 November 2016 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... similar to what I tried first, except I [b]NIRVANA_printC[/b ... 8x8s are repeated elsewhere at line offset +4). I wasn't ... , but it seems to be faster than decompressing a bitmap with ... also draw the scenery much faster this way, since your program ...
    colonel32 colonel32 November 2016 Development
  • How would you approach parallax?So ... there is this trick by Joffa that we all know...of waiting for the ULA to reach certain pattern on the screen using the IN command. And then s…

    ... figured I can scroll screen line for 1 pixel left ... stack to last byte in line and then repeating...
    < ... br />
    Is there a faster way? Now I need to ... carry flag for each scan line from tiles to "scroll in ... m doing it for the first time. I need 46 t ...
    tstih tstih December 2016 Development
  • Xmas present from Hood:))Dear MB-02+ users, on my site[url="http://hood.speccy.cz"] http://hood.speccy.cz[/url] I have made quite significant update in download section. B…

    ... reliably and also could be faster.
    - fixed: run file. ... you attempted to enter blank line during new disk or ... a buffer start, the one line will be displayed incorrectly ( ... instead.
    - can copy only first 127 directories
    - there appear ...
    Hood Hood April 2017 Brand new software
  • Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly​ I keep coming up with the same issue. How do you do animations wit…

    ... faster keyboard routines, placing any code that is jumped to via GOSUB ... or GOTO frequently at the start of the program for faster line ...
    Dunny Dunny May 2017 BASIC
  • Go to, gosub or something different?I'm going to write an arcade game in basic. May compile it. In both basic and compiled basic would a goto or gosub be faster? Also if I stored …

    ... , but FWIW GOTO will be faster than GOSUB, marginally. Make sure that ... has to search for the line to jump to.
    Dunny Dunny August 2017 Sinclair Basic
  • Print vs 23659To be honest I could not think of a better topic title, although its not ideal. Anyway, I do recall reading ages ago that the reason you cannot no…

    ... screen, it’s much easier, faster, [i]and[/i] safer ... it to two in the first example, you’ll get ... the B register with the line number, and at address ... .

    If the line number is 22, then subtracting ... , sort of). If the line number is greater than 22 ...
    Ast_A_Moore Ast_A_Moore October 2017 Sinclair Basic
  • BASIC to Python - bringing a modern view on an 80's obsession...Howdy! I don't know how relevant this will be here, but I've just finished up a 3-part overview on my blog where I convert an old 1K ZX81 basic pr…

    ... thought using the Unix command line and learning a bit of ... Hard Way" that has its first few chapters freely available online ... supposed to replace GOTO and GOSUB which I hear every "serious ...
    The Mighty Dopethrone The Mighty Dopethrone October 2017 Sinclair Miscellaneous
  • Headerless tape loading blocksIs there any way to convert headerless machine code blocks to regular headed blocks? I imagine it involves Taper. I ask because now that I know I'…

    ... /> ...then I know the DATA line is the program that in ... attempt to make .dsk files first and see if that works ... . The custom loader would alternate faster-loading blocks (with a higher ...
    The Mighty Dopethrone The Mighty Dopethrone November 2017 Sinclair Miscellaneous
  • 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…

    ... />
    SAVE "name" LINE x will save your program ... line x. When you load the program, the spectrum first ... block, so it will load faster.
    - It is ... that will jump to LINE 10, but after overwriting ... />
    Except the first one, rest of advantages are ...
    Zup Zup November 2017 Development
  • How can I make a UDG rotate?I designed a set of UDG's that can be used for making shapes or letters. Trouble is that my circle - for example - consists of 4 pieces and it would…

    ... code routine you call in line 9900 with USR 60000 doesn ... Spectrum BASIC:-
    ;
    ; 10 GOSUB 9900: REM * Display Mouse Pointer ... are stored least-significant byte first)
    LD D,(HL)
    colonel32 colonel32 November 2017 Sinclair Basic
  • How can I make a UDG rotate?I designed a set of UDG's that can be used for making shapes or letters. Trouble is that my circle - for example - consists of 4 pieces and it would…

    ...
    [code]
    10 GOSUB 5000 : REM Do initial setup ... br /> [code]
    10 GOSUB 5000 : REM Do initial setup ... waiting
    40 GOSUB 7000 : REM Do ... behaves like line 30 of the first program ( ...
    colonel32 colonel32 November 2017 Sinclair Basic
  • Loading Images/Screens mid-gameHi all, Looking to get back into a bit of coding and I couldn't figure out a way to do the following: I have an image/SCREEN that I'd like to b…

    Here's a faster version of the first routine (this now takes ... the start of the program (line 93 both resets 'c' ( ... used in the display routine first, in descending order of frequency ... loop return points the first statement on a line; otherwise, minimise the ...
    Battle Bunny Battle Bunny April 2018 Sinclair Basic
  • Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…

    ... version which is much faster; I'm starting to ... on how to make it faster though, so comments appreciated ... br /> ; if it's the first pattern, we can skip actually ... ld de, #0x5e ; next line of glyph data
    add ... next 94 bytes the second line, etc.
    N* ...
    Sol_HSA Sol_HSA December 2018 Development
  • Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…

    ... />
    It’s much, much faster now and accommodates two additional ... 255? No? Continue on same line.

    inc de ;next ... placing the "tail" char byte first)

    ex de,hl ... /> blank inc h ;down one line
    inc e ;next byte ...
    Ast_A_Moore Ast_A_Moore December 2018 Development
  • 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…

    ... ] but I'm already way faster than that.
    I can ... , but I was looking for faster ways to implement it. That ... - but I still want faster!

    First, I'm holding onto ... adding special cases for optimal line drawing, and may be willing ...
    joefish joefish 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…

    ... need to care whether each line has a different number of ... 32 non-control chars per line. I'll give it a ... prints the string a bit faster.

    [quote="patters;952078 ... the program (LINE 9000) I put the frequent variables first, then loading ...
    IvanBasic IvanBasic April 2019 Brand new software
  • binary mirroring in basicsame as last question, really. only this time i want to mirror an 8 bit decimal number

    ... it fast:[/quote]

    Faster, at the expense of 2K ... individual data items rather than line numbers, that way would save ... to use a separate program line for each element in the ... out, but here are the first 16

    0, 128 ...
    dmsmith dmsmith October 2019 Chit chat
  • Any love for Cholo?I remember really wanting this, but seeing very little coverage on it... so I bought it, and loved it. I always wonder why it never got any covera…

    It's doing hidden-line removal; it's NOT ... longer than just drawing the line. Even if you assume ... lines, any horizontal-ish line has to check each pixel ... but it's not any faster. And that's just based ... Jaguar and N64 were the first home consoles to have this ...
    joefish joefish February 2020 Games
  • new interface for WOSwhen did the interface chance, not been on here in a little while and its the first time seeing it, and it sso awkward to use where before you could …

    ... new site is actually any faster or slower, but it [i ... only 1 release (ie 1 line of text) so hiding it ... 'll see two tabs - the first (default) tab is titled "About ...
    Lee Bee Lee Bee September 2020 Updates
  • If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…

    ... much faster.

    The 128k editor is nicer than the line ... ’m always loosing the first character of a line when typing in ... of this RAM in the first 16k in the ROM area ...
    1024MAK 1024MAK February 2021 Hardware
  • Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …

    ... data rate to 8 x faster at the same time, while ... space that wasn't cycled first was consumed, then remaining capacity ... could be erased as a first sector, and subsequent unread allocations ... to a normal Interface1, in line with other Microdrives, and could ...
    cj7hawk cj7hawk March 2021 Hardware
  • Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …

    ... can work about 8 times faster, so then the load time ... Sector-0 of the file first. As these are all numbered ... by noting which sector is first overwritten when it is erased ... controlled from the Spectrum command-line or from Basic. Also a ...
    cj7hawk cj7hawk June 2021 Hardware
  • Windows 11 - It's commingJust when you thought that there was going to be no more new versions of Windows, a recent leak reveals Microsoft are due to announce Windows 11 soon…

    ... will fix this down the line, but first lets see if people ... they get the job done faster. From what I can deduce ...
    Scottie_uk Scottie_uk June 2021 Chit chat
  • Who's NEXT?How about having a category just for Spectrum NEXT owners? I got mine on Monday, its the original issue, plain jane and quite enough for me to ge…

    ... pdf explaining the program line by line and having the ... a little alien at first but the price of ... pretty good too. The first chapter is on original Spectrum ... so that the machine runs faster by that amount. All ... as if everything is faster. You want a 50Hz ...
    Alcoholics Anonymous Alcoholics Anonymous September 2021 Sinclair Miscellaneous
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