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<1…16171819202122…34>
  • Buzzer sounds tips'n'tricksSo I have an ARM Cortex M3 with a buzzer connected to its GPIO pin. And because I read this forum I know that there is no need to add a separate buzz…

    The first thing to note is that ... not simply an I/O line connected to a buzzer. There ... signal to it several times faster than the circuit can fully ... managed, thanks to the much faster 16- and 32-bit processors ...
    joefish joefish May 2013 Development
  • List of useful POKEs?Hi all. :smile: Just out of curiosity, does anyone know of a thread/file somewhere here containing a list of useful POKEs? Stuff like POKEs to make …

    ... 23756,0 to change the first BASIC line to 0. Worse protection ... , udg location, making the cursor faster, turning caps lock on when ...
    zxbruno zxbruno July 2013 Sinclair Basic
  • Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …

    ... that, and GOSUBs address the first command after the REMs directly ... the REMs in line 40 and call it with GOSUB 41. Run ... ,0 at the start so line 4020 can be dropped.
    line number is not calculated and ...
    Battle Bunny Battle Bunny August 2013 Sinclair Basic
  • Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …

    ... that, and GOSUBs address the first command after the REMs directly ... the REMs in line 40 and call it with GOSUB 41. Run ... ,0 at the start so line 4020 can be dropped.
    line number is not calculated and ...
    wibble wibble August 2013 Sinclair Basic
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... to be learning at a faster rate, the pain of just ... - it has to be right first time, there is no going ... the code before. go through line by line on the input, with ...
    wibble wibble September 2013 Development
  • Finders Keepers+I know a few of you are interested in this project so I thought it was about time I started a proper thread for it rather than just slipping bits int…

    ... me to write in the first place :(

    *With meaningful ... some suggestions about a better/faster way of going about this ... into my disassembly for each line where the target address matches ... , but if there's a faster way I'll be able ...
    David Jones David Jones September 2013 Development
  • Poke 23755 & 23756Entering the following few lines of BASIC: [IMG][URL=http://s1286.photobucket.com/user/rebelstarwac/media/Poke1_zpsc2845838.png.html][IMG]http://i12…

    ... ;728060]Presumably each line has a link to ... change line 1 to line 10, the next line number ... not at all. Every line is stored in memory sequentially ... destination line of a GOTO or GOSUB sentence) a line has ... first lines of your program. In each loop run, the line ...
    mcleod_ideafix mcleod_ideafix October 2013 Sinclair Basic
  • Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…

    ... multicolour routine on the 48K first, being the slowest, so it ... has more time per scan line (228T instead of 224T) but ... sequences of instructions will run faster on a Spectrum +3 and ...
    Einar Saukas Einar Saukas October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... ; get address of line or next line
    dec hl ... :
    push af ; stack first parameter
    call find_int2 ; ...

    ; THE 'GOSUB' COMMAND ROUTINE
    org 0x1eed ... test_trace_2:
    call out_num_1 ; the line number
    ld a, ' ' ...
    chev chev October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... hl), l ; store zero in first address
    inc e ; ... ; set it to the GOSUB end marker
    dec ... ) ; signal line execution
    ld (iy + _nsppc), 1 ; first statement
    line current line
    ld hl, (ch_add ...
    chev chev October 2013 Development
  • using the raspberry pi for the zx spectrumI just saw where they are now using a Pi to emulate a floppy disk drive for the Amiga. So it got me wondering if this could be done for the ZX Spectr…

    ... a lot better than the first-generation adapters from 5 years ... signal stays inside the transmission line. (actually between the wires in ... :p)

    It's faster, immune to interference, and almost ...
    guesser guesser November 2013 Hardware
  • Here comes the sunAnybody ever finish this? Theres almost no help out there anywhere for it. [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006427[/url]

    ... it hasn't done any GOSUB to get to 423 so ... , so it's 6 the first time you play the game ... head nor tail of that line.

    I'll do ...
    Battle Bunny Battle Bunny February 2014 Games
  • FBSThis is one of those things that is more like an experiment than a real project. I was trying to do this in BASIC, then realised my BASIC was too ru…

    ... the top and
    - tree line 8 - 16 pixels at the ... to first draw columns and then draw clouds and tree line over ... them. Then scroll them a bit faster then ...
    tstih tstih February 2014 Development
  • Change PAPER and BORDER colours from machine codeHow do you go about changing PAPER and BORDER colours from machine code? I've forgotten the system variables for border and paper.

    ... basically not doing your homework first - i.e learning assembly and ... productive and faster for you if you lay the groundwork first instead ... require clarification on every single line of assembly you're going ...
    Arjun Arjun July 2014 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... nn ; start of buffer "half-line"
    pop bc
    ... nn ; start of screen "half-line"
    push af
    ... reset) in comparison to the first. Notice this overhead per ... suggested would be a lot faster.

    [QUOTE=introspec ...
    Einar Saukas Einar Saukas December 2014 Development
  • Finders Keepers+I know a few of you are interested in this project so I thought it was about time I started a proper thread for it rather than just slipping bits int…

    ... utter joy of deleting that line.....

    2. Will enable ... tstates back so it runs faster/smoother or for adding extra ... wouldn't be the new, faster improved edition sitting on your ... /> Looking forward to seeing the first installment of FK+!!

    MatGubbins MatGubbins January 2015 Development
  • Some Spectrum Adventure ReviewsHi, HeeHee... Today I found some old short reviews I did of some Spectrum Adventures for contributions to "SynTax" disk adventure magazine in the 19…

    ... hospital, ensuring that she first visits her own GP ... help the teacher
    first, though. The brats ... sequel to Zenobi's first 'Indies'
    collection ... a status
    line which keeps you updated ... some of
    the faster chip machines. Congratulations to ...
    catventure catventure March 2015 Games
  • Measuring the 'real-life' speed of 3D racing gamesWe all bought Out Run, didn't we? An awesome showcase game from the arcades, full of rapid graphics whizzing past your Ferrari Testarossa.<div><br></…

    ... how to get out of first gear) the perspective's a ... seem to go round corners faster than in a straight line.
    GReW GReW June 2015 Games
  • 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…

    ... @ a specific screen location, line wrapping, scrolling,
    ;* ... /> ;* to make rendering faster and several loops have been ...
    ; 64 character/line demo, prints entire character set ... />
    lda #' ' ; the first character in the font
    JamesD JamesD September 2015 Development
  • TalkTalkIn the light of the TalkTalk data leak I was thinking was life easier, simpler, less stressful and better in the early 80s? Don't get me wrong I lov…

    ... at university, and at my first job etc. are still things ... Strowger telephone exchange throwing in line noise during my downloads, 6p ... per second. I can type faster than that). I enjoy these ...
    Winston Winston October 2015 Chit chat
  • I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…

    ... it as far as the first story line fight and I've ... before, but feels a literary faster, but that could be me ...
    Bermondsey Bob Bermondsey Bob November 2015 Chit chat
  • Opus DiscoveryWould anyone have any materials about programming the Opus Discovery disk? I know it overrides ROM and uses microdrive commands, but I am more into b…

    ... the FDC's 'Data Request' line for invoking NMI's comes ... catching arriving bytes must be faster than the time in which ... is quite well for a first round, given my very brief ...
    roko roko February 2016 Development
  • So I did a thing...And it's nearly ready for release: [img]http://s18.postimg.org/4453ayo5j/Screen_Shot_2016_03_30_at_16_18_17.png[/img] Apologies for the enormou…

    ... to create comments inside a line
    Short-circuit boolean ... MERGE)
    A new, faster and more accurate quadratic bezier ... longer crashes SpecBAS
    Faster display updates in Linux versions ... the same statement
    GOSUB can no longer crash the ...
    Dunny Dunny April 2016 Sinclair Basic
  • Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…

    ... /IY indexing will be the faster and smaller method for accessing ... anything with a value you first half to load it into ... you can use the much faster and smaller 'ld r,(hl ... ; Variables indexed by ix, LSB first:
    191 ;
    192 ; ix ...
    Alcoholics Anonymous Alcoholics Anonymous April 2016 Development
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ... the whole line in one pass - you POP your first two bytes ... didn't work out any faster, as hard-coded stack pointer ...
    joefish joefish April 2016 Development
  • z88dk TutorialHi, Could anyone direct to to a recent MS Windows based tutorial on getting started with z88dk. I know a small amount of C, so it's more the comp…

    ... tried to compile for the first time).

    http://www ... explanation first. z88dk uses a "-startup" value on the compile line to ... -Cl--split-bin[/b]
    First get rid of any binary ... can be customized to produce faster or smaller code. For the ...
    Alcoholics Anonymous Alcoholics Anonymous June 2016 Development
  • P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…

    ... it's possible to be faster than a straight LDI copy ... be a lot easier and faster.
    But it's not ... for these, one per each line of tiles. Scrolling them is ... * TstatesPerLDI) = 8960 T, in the first place. With enough effort you ...
    Hikaru Hikaru June 2016 Development
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