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  • Best Demos please?Hi, I have just discovered how good the demos for the spectrum are, I have been a spectrum owner for years but apart from the work I used to look at …

    ... .php?type[0]=demo&platform[0]=ZX+Spectrum&page=1& ... into a compatible format (*.tap or +3 disc). The main sources of ... at case by case;
    2. Demos that implement border and ... heavily relying upon the additional 5-10% of the additional performance ...
    introspec introspec October 2013 Sinclair Miscellaneous
  • 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…

    ... br /> ; THE 'ERROR-2' ROUTINE
    org 0x0053< ... in SP
    res 3, (iy + _flags) ; ... ' ' ; test for space or higher
    scf ; set ... 6 ; test for characters 0-5 (tokens)
    ccf ; ... ; ROM 0, VRAM 1
    ld e, 0 ; FIXME
    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…

    ... fst 1 ; store in mem-1
    fgt 0 ; x', 10^(2^n), (1/0)
    3
    fst 4 ; mem-4
    fst 5 ; and mem-5 ... ; jump if not
    or e ; zero?
    jr z ... ; stack count and result (C or C')
    exx ; switch ...
    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…

    ... ld bc, 5 ; 5 bytes
    ... rlca ; 0 to 3
    ... 0 ; 2 * z mem-0 holds 2 * z
    fdel ; -
    fstk0 ; 0
    fst 2 ; 0 ... 1)
    fst 1 ; mem-1 holds b(r - 1)
    fsub ; b(r), 2 ... /> or (hl) ; OR with ...
    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…

    ...
    jr nz, report_bd ; or negative
    call bc_1_space ; make ... /> fce ; i (x) or i (x) - 1
    ret ; end of ... - 1, 2.5 * x' - 2.5, 0.5
    ; y2, 2 * x' - 1, 5 * x' - 2.5, 0.5
    fsub ; y1, x' - 1, 2.5 * x' -
    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…

    ... fmul ; sin (pi*w/2) = sin x (or = cos x)
    ... fce ; sin x (or cos x)
    ret ; ... -1/x, (1/0)
    fstkpix.5 ; -1/x, pi/2, (1/0)
    fxch ; -1/x, pi/2< ... x case 1
    ; w, atn (-1/x) case 2 and 3
    chev chev October 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... am using version 0.5.4.beta2. Isn't 0.6.0 an unfinished ... mask off bits 1 and 2, giving us 000 or 110, then
    ;; set bit 0, giving 001 or 111 ... accumulator's sign bit is 0 or 1 on
    ;; alternate edges. ...
    stephenw32768 stephenw32768 October 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... edge, 0 on low edge (4T)
    .colour:equ $+1
    or 5 ; combine ... /> ;; 7 for white; or, in binary, 000 and 111.
    ;;
    ;; So ... all zeros, it gets bits 0 and 2 set, giving
    ;; cyan ...
    stephenw32768 stephenw32768 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…

    ... org 0x1bb0
    defs 2, 255 ; unused locations (common ... 1 followed by class-0

    ; THE 'COMMAND CLASSES - 0, 3 & 5 ... /> ; THE 'COMMAND CLASSES - 1, 2 & 4'
    org 0x1c1f ... a, c ; test
    or %10011111 ; discriminator byte
    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…

    ... cp 4 ; greater than CLUT 3?
    jr nc, report_k ... and %11000111 ; discard bits 3 to 5
    xor b ; xor ... ; address at screen-1
    defw pos_7 ; or screen-2

    ... /> cp 128 ; less than 0.5?
    jr nc, c_arc_ge1 ; ...
    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…

    ... fst 5 ; g to mem-5
    fstk.5 ; x, y, g, 0.5< ... sin(g/2), (0/1)
    fnot ; x, y, sin(g/2), (1/0)
    ... 1 ; un-1
    fmove ; un-1, un-1
    fgt 3 ; un-1, un-1 ... /> and (iy + _flags2) ; or trace off?
    jr z ...
    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…

    ... (iy + _mode), 0 ; cancel control or meta
    call ... restore report code
    set 5, (iy + _vdu_flag) ; signal ... 1, 0 ; -3, 'K'
    defb 6, 0 ; -2, 'S'
    defb 11, 0 ; -1, ... br /> wait_key:
    bit 5, (iy + _vdu_flag) ; does ...
    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…

    ... a, 2 ; use stream 2
    ld (iy + _vdu_flag), 0 ; signal ... /> org 0x190e
    defs 1, 255 ; unused locations (common)< ... /> org 0x1988
    defs 3, 255 ; unused locations (common)< ...
    bit 5, a ; next string or array variable?
    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…

    ... ; range 1 to 24?< ... ld a, 2 ; use upper ... the range 0-5?
    ... ; pen or higher?
    bit 3, (iy + ...
    chev chev November 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…

    ... set 5, h ... 3, 255 ; unused locations (common)

    ; THE 'TEST 0 OR 1 ... /> cp 2 ; 0 or 1?
    ...
    chev chev November 2013 Development
  • BLOG- ZXSporgBasic RPG development thread- Inspired by the Spectrum 30 show, and after a six-month wait while I was busy playing loads of gigs, I have decided to do a spot of Spectrum coding…

    ... . Instead of one general ink 1 statement, it specifies the ink ... print black (for a door) or blue for wall depending on ...
    bigjon bigjon December 2013 Sinclair Basic
  • BLOG- ZXSporgBasic RPG development thread- Inspired by the Spectrum 30 show, and after a six-month wait while I was busy playing loads of gigs, I have decided to do a spot of Spectrum coding…

    ... ]INK 1+6*(VAL t$(5)=1)*((j=7)+(j=8))[/I] or similar ...
    bigjon bigjon December 2013 Sinclair Basic
  • Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…

    ... this:
    [code]
    1 GO SUB 2: LET st=t0: PRINT ... 4,0;"Start : ";st:
    GO SUB 3:
    GO SUB 2: LET ... ft=t0: PRINT AT 5,0;"Finish ... )*100)/100:
    STOP
    2 LET t1=FN t(): LET ...
    Battle Bunny Battle Bunny December 2013 Sinclair Basic
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... , I think the bank switching (or paging) could have been done ... 64k banks addressed as 8k or 16k banks. Total RAM is ... the reset button is pressed or the power is cycled.
    1
    7 6 5 4 3 2 1 0 bit
    RAM selection
    Bits 0-2 ...
    1024MAK 1024MAK January 2014 Hardware
  • Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…

    ... br />
    Bits 0-2 - Color screen edge.
    0, otherwise.

    (Implement as !A1 or try ... (!A1 && !A0) as some examples use OUT 0,0 ... port configuration:
    Bits 0/1 - Number of the drive ... br /> 1, 9, 2, 10, 3, 11, 4, 12, 5, 13, ...
    Jmk Jmk January 2014 Emulators
  • Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …

    ... (3,2): LET l=40: LET t=22.5:
    FOR a=1 TO 3 ... ,2)=88+p2: NEXT a:
    DATA -l,-l,+l,-l,0 ... ,+l
    8 FOR a=1 TO 3:
    LET ... p2=a+1 OR a=3:
    PLOT a(p1,1),a(p1,2):
    DRAW a(p2,1)-a(p1,1),a(p2,2 ...
    Battle Bunny Battle Bunny January 2014 Development
  • hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…

    It's up to you (or me) to find hash ... records.
    za = { 1, 2, 0, 2 }
    zb = { 2, 2, 1, 1 }
    Here's how ... s try t(1)=2
    t = { 0, 2, 2 }
    rsl = { 3, 4, 2, 4 }< ... s try t(2) = 3
    t = ( 0, 1, 3 }
    rsl = { 4…
    Kweepa Kweepa January 2014 Development
  • Idea: New interface 1There are a lot of great new interfaces to plug into the back of the spectrum, but things quickly get rather messy! The interface 1 is a very tidy s…

    ... format?

    Or

    2) It is electronically incompatible ... loan :)])

    Or

    3) Some other incompatibility?
    1.45 ( 48k ) .Z80 ... is pressed for less than 0.5 seconds.
    The ...
    Dan Antohi Dan Antohi February 2014 Hardware
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ... (number 2) defb 0,1,1,1,1,2,0 etc and next graphic number 3 etc?< ... ld a,(ix+0) ; check whether space or wall on map ... s a bomb (tile 3)
    cp 2 ;
    jr ... (tile 4)
    cp 3 ;
    jr z, ... 's something else again (tile 5)
    cp 4 ;
    Morkin Morkin February 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ... 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
    defb 1,0,0,0,0,0,0,0,0,0<…
    Morkin Morkin March 2014 Development
  • Learning a programming language from scratchSome advice please... At work I use an Excel/Calc spreadsheet of my own making to get address information from various csv/txt files I download ever…

    ... postcode) < 5) or (len(postcode) > 8):
    # is_valid = 0
    if ... :)
    It runs in python 3.2 (although I'm sure it ... letter
    if random.randint(1, 2) == 1:
    this_letter = this_letter.lower ...
    BigBadMick BigBadMick March 2014 Chit chat
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... memory mapped I/O addresses or something where I can ... different than the 2.1 one, and maybe indeed 2.0 handles 4bit samples ... bit is hard on a 3.5 MHz machine. Anyway for careful ... (maybe the manufacturer changed or materials changed), or with age (maybe the ...
    Alcoholics Anonymous Alcoholics Anonymous March 2014 Development
<1…21222324252627…34>

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