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  • Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…

    ... It will appear as 15 lines of mainly grey text.< ... says "No errors in 16 lines. 4 bytes generated"
    ... main Spin display window:
    10 PRINT AT 0,0; " ... ;print road verge on 24 lines'
    Insert line 8 ' ... br /> If it is odd, lower the road position in hl ...
    buzzy buzzy September 2012 Development
  • Project on ZX Spectrum in UniversityHi everyone, I am Max, student of media studies in berlin, and I have to do a little project on the spectrum. I am working on a sinclair zx spectrum…

    ... here. The first two VAL lines you gave would work perfectly ... Spectrum has no UPPER$ or LOWER$, so you'd have to ... keyword.

    [QUOTE]5. (...) 10 Let a$="ux1000w0c&w1c ...
    snigfarp snigfarp December 2012 Announcements
  • PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…

    ... memory is active in the lower 16K, or the memory that ... will generally see all data lines as logic high). Basically the ... memory with each execution of RST 0x38.
    Winston Winston February 2013 Hardware
  • Sound programs that use +3DOS/AssemblerHi I am working on my final JSWed project and have nearly finished but i am considering changing the standard in game tune you get,the editor instruc…

    ... ]

    6.10 The Music editor
    The ... saved from.
    6.10.1 The Assembly fil ...
    directives. The rst byte is a command byte ... same line or on different lines; JSWED doesn't care ... preceding section.
    The rst and second parameter bytes should ...
    jammajup jammajup April 2013 Development
  • Someone just gave a 1 to everything I madeIf you take a look at all the titles I am involved with that are hosted in the archive, you will find that someone gave a 1 at everything that I made…

    ... present score - which was definitely lower when I started the thread ... %) 10s, as I write these lines. No other game produced after ... a score of 8 to 10, then, who am I to ... not 8, 9 or even 10. I'll write it again ...
    Alessandro Grussu Alessandro Grussu May 2013 Sinclair Miscellaneous
  • Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…

    ... =saberman;700695]I tried the 10 Hz and it is just ... corrected by adding two code lines:
    [FONT="Courier New"]
    lower one. That's how it ...
    Dan Antohi Dan Antohi May 2013 Hardware
  • 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 …

    ... if one worm has eaten \`10 give fanfare and start a ... THEN FOR I=1 TO 10: BEEP 0.005,15: NEXT ... all letters are treated as lower case.
    4020 IF CODE ...
    wibble wibble August 2013 Sinclair Basic
  • SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…

    ... CODE 16384: RESET.
    [*]Lower 16K ROM can be used ... NMI.
    [*]Remove multiple lines: DELETE 10,100.
    [*]Renumber ... [*]Shift in CAPS mode gives lower case letters.
    [*]Simple ... entering a line prevents tokenizing lower case characters.
    [*] ...
    chev chev October 2013 Sinclair Basic
  • Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…

    ... they should, since the lower 16k are not modified in ... a lot of address lines going from the replacement ... the same lines -- left is input 2 (pin 10), right is ... one of the RAM address lines.

    Now, ... that trace from pin 10 goes to.
    Incidentally ...
    skagon skagon October 2013 Hardware
  • 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 0x0374
    sound_4:
    rst next_char ; advance pointer
    ... check
    inc a ; lower range
    jp m, report_b ... 0x0397
    sound_1:
    rst get_char ; get next character< ... /> jp nz, be_h_and_l_lp ; 10 t-state jump
    ...
    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…

    ... ?
    ccf ; set carry if lower case
    ret ; and return ...
    fce ; exit calculator
    rst next_char ; get next character
    fstk10 ; stack 10
    fmul ; multiply previous last ...
    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…

    ... pointers
    ld c, 10 ; ten bytes of limit
    lines
    ld b, (hl) ... />
    report_b2:
    rst error ; else
    defb Integer_out_of_range ... ; stack error address
    rst error ; report
    defb ...
    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…

    ... ; signal string variable
    rst next_char ; next character
    ... iy + _vdu_flag), 1 ; signal lower screen
    call in_item_1 ; ... call cl_set ; make it current lower screen position

    cp 10 ; in range?
    ...
    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…

    ... ; return if so
    rst error ; else
    defb ...
    call cls_lower ; clear lower screen
    pop af ; ... ; handle NEW 128
    rst error ; else
    defb ...
    jp reclaim_1 ; delete lines

    org 0x13ff ...
    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…

    ... b, (iy + _df_sz) ; lower screen display file size
    lower screen
    call cl_line ; clear ... 0x1946
    on_err_goto:
    rst next_char ; next character
    ... it
    ld c, -10 ; fourth digit
    call ...
    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…

    ... lines
    ld a, 22 ; move cursor
    rst ... ld (sposnl), bc ; for lower
    ld (echo_e), bc ...
    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…

    ... cp 2 ; lower part fits?
    rst error ; ... 24 ; 24 lines
    call ...
    chev chev November 2013 Development
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... register only incrementing through the lower 7 bits is making the ... ;8
    jp nz,.scr_lp ;10[/code]

    So basically ... :

    1. All character lines except every 3rd : R loops ...
    Hikaru Hikaru January 2014 Development
  • really dumb questionbut can I use the following line to create a udg and if so how do I call it or use it via the graphics mode? Do I need to READ something somewhere? …

    ... following banks need to be lower in memory? I don' ... [code]5 CLEAR 60000
    10 DATA7,8,16,32,64 ... p-i:BORDER 6:PAUSE 10:BORDER 7:NEXT i< ... -i:BORDER 5:PAUSE 10:BORDER 7:NEXT i< ... screen? I changed the lines 25-27 to this and ... }{B}{C}{D}{E}":PAUSE 10:NEXT i
    27 ...
    carlsson carlsson January 2014 Sinclair Basic
  • From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…

    ... following:

    [CODE]
    10 goto 50
    20 next ... this (bearing in mind that lower case tokens and "goto" are ... Spectrum syntax):
    [code]
    10 GO TO 50
    20 ... also wrap & indent long lines, double indent for long DATA ...
    Battle Bunny Battle Bunny March 2014 Sinclair Basic
  • 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…

    ... .close()
    total_valid_postcodes = len(lines)
    print('Finished: ', total_valid_postcodes ... thousand postcodes in under 10 seconds. :)
    ... 1:
    this_letter = this_letter.lower()
    postcode = postcode + ...
    BigBadMick BigBadMick March 2014 Chit chat
  • Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…

    ... be divided into a lower quarter containing the 16K ... as driving or sampling data lines to transfer the byte.< ... s DRAM refresh of the lower 16K is actually broken ... multiplexing decisions made for the lower 16K to be made ... 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30 ...
    zub zub May 2014 Sinclair Miscellaneous
  • Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…

    ... 0: CLS : GO TO 10
    71 DATA BIN 11111110 ... ) ;(STKEND)
    ld bc,10
    add hl,bc
    lines

    CALL $2307 ... /> LD A, (BC)
    RST $18
    DEFB $0A
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…

    ... lower window (defined by the system variable at 23659) has two lines ... limited to 22 lines. You can make the lower window bigger if ... print to that. However, the lower window gets its color settings ... of PRINT AT, only using RST 16.

    When in ...
    Dr BEEP Dr BEEP August 2014 Sinclair Basic
  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... /> [code]TableRoutines

    db 10
    db 40
    db ... . Just eliminate the "defw Routine" lines you don't want or ... , I might implement with a 'lower tech' solution that does not ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Emulators
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... 0 and then two lines of code were being ... ) ; vertical position.
    rst 16 ; print it.
    ... until it hits the 10 defined by delay. ... want an asterisk here.
    rst 16 ; display it.
    ... /> delay
    ld b,10 ; length of delay.
    delay0 ...
    antonyjones101 antonyjones101 September 2015 Development
  • Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…

    ... improvements:
    You could replace lines 2108..2120 with:
    [code ... 1; INK 0;AT 9,10; CHR$ (151+v): LET v ... octave but not for the lower octave, not sure if this ...
    GReW GReW December 2015 Sinclair Basic
  • Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…

    ... range, a low reading (lower than say 50 ohms) between ... than 10 ohms, again when testing between different signal lines, it ... connection between two different signal lines, then the meter will ... when testing between different signal lines, what we are looking ...
    1024MAK 1024MAK December 2015 Hardware
  • 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…

    ... works.

    Lines 129 through 186 set up ... /> 193 ; ix + 09/10 fill pattern pointer
    194 ... br /> 204 ;| | V
    205 ;+-----------------------+ lower addresses
    206 ;| fill |
    Alcoholics Anonymous Alcoholics Anonymous April 2016 Development
  • New Game: Vallation.Okay, this has been hinted at by both Redballoon and me a couple of times, but the damn thing is finally done now. :-D [b][url="http://tardis.dk/w…

    ... when destroyed = yes
    The lower 4square alien is drawn corrupted ... = no

    Screen 1-10 and 1-12
    4square ... 2x2 (or something along those lines)

    -----------------------------------------------------

    At ...
    MatGubbins MatGubbins July 2016 Games
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