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<1…17181920212223…34>
  • pc keyboard for speccyis it possible to use a ps/2 keyboard for a speccy. I have a +2A, spectrum+ and toastrack, which all have broken keys. So an external keyboard woul…

    ... format)
    [code]PartNo 00 ;
    Date 28/11/ ... ; /* Speaker output (D4 from port $FE) */
    PIN 14 = D6 ; /* ... a read operation from port $FE */
    ENABLE=!(IORQGE # ...
    mcleod_ideafix mcleod_ideafix April 2012 Hardware
  • Is there a ROM modification (48K) for load without typing LOAD""?The target is to play with 48K machines with keyboard broken, or an alternative solution for new clones like Superfo instead of making a new keyboard…

    ... a value of
    ; $00 - SAVE
    ; $01 ... address STMT-RET.
    LD A,($5C74) ; fetch T_ADDR ... change

    LD BC,$0011 ; presume seventeen ... counter to eleven.
    LD A,$20 ; prepare ...
    Dr BEEP Dr BEEP April 2012 Development
  • Hisoft Devpac and the MGT Plus DI've got (potentially) a bit of an odd one here that might cut across a couple of areas so I thought I would put it in misc. I am trying to Hisoft's…

    ... of "LD B,10 : RET":
    [code]
    preamble = 00 00 00 00 00 00 00 00 00 00 FF FF ...
    RECFLG = 06 (MD.FILE)
    RECNUM = 00
    proglen = 00 00
    linenum = 00 00
    data = 06 0A C9 (LD B,10 ...
    Battle Bunny Battle Bunny April 2012 Sinclair Miscellaneous
  • Hisoft Devpac and the MGT Plus DI've got (potentially) a bit of an odd one here that might cut across a couple of areas so I thought I would put it in misc. I am trying to Hisoft's…

    ... of "LD B,10 : RET":
    [code]
    preamble = 00 00 00 00 00 00 00 00 00 00 FF FF ...
    RECFLG = 06 (MD.FILE)
    RECNUM = 00
    proglen = 00 00
    linenum = 00 00
    data = 06 0A C9 (LD B,10 ...
    maguman21 maguman21 April 2012 Sinclair Miscellaneous
  • ISO-Copy - Individual Software revisitedHi folks In another thread about Supertape: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36203[/url] ... we touched on ISO-Copy by th…

    ... sync pulses at approx 0:00.031 in the WAV?:
    So the FF FF FE 74 HEX... the actual data ...
    Andrew Barker Andrew Barker May 2012 MIA/STP/SDP
  • ZX Spin and TZX FilesHi, It is probably me, but I am having trouble loading some .TZX files into ZXSpin. An example is: [url]ftp://ftp.worldofspectrum.org/pub/sinclair…

    There is code in LD-BYTES to check individual bytes ... /> [code]
    05BD LD-VERIFY LD A,(IX+00) Fetch the original byte ...
    Battle Bunny Battle Bunny May 2012 Emulators
  • 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 …

    ...
    L_0DD9: LD HL, $5B00 >*2 ;.0DD9 21 00 5B *delete ... deleted = -1 * 5T = - 5T
    LD HL,$5B00 >*2 deleted ...
    Battle Bunny Battle Bunny June 2012 Development
  • 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 …

    ...
    L_0DD9: LD HL, $5B00 >*2 ;.0DD9 21 00 5B *delete ... deleted = -1 * 5T = - 5T
    LD HL,$5B00 >*2 deleted ...
    Paddy Coleman Paddy Coleman June 2012 Development
  • Jelly-Vision!As threatened in the "'Spectrum Play' Error" thread, here's a ruff'n'reddy interrupt driven full screen wobbling routine which has no practical use w…

    ... /> ACTIVATE: ld hl,$fe00
    ld bc,$00fd
    ACT1: ld (hl),c ... ACT1
    ld (hl),c
    LD A,$FE
    LD I,A
    Battle Bunny Battle Bunny June 2012 Sinclair Basic
  • 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 …

    ... top byte of port $fe and mask to IN ... strings ended simultaneously
    ld h,a
    ret < ... ld e,c
    ld d,b
    ld c,l
    ld ... b,h
    ld ... l,e
    ld ...
    Alcoholics Anonymous Alcoholics Anonymous June 2012 Development
  • Help needed... RND in machine codeI have been battling away trying to convert a simple BASIC routine (below) to machine code, but to no avail. The routine is used to fire 2 bullets a…

    ... . Eg.:
    [code]
    RNDFUN: ld b,$1D ;B= calculator code ... />
    defb $34,$40,$B0,$00 ;stk_data (small integer)
    defb ... ))
    defb $34,$40,$B0,$00 ;stk_data (small integer)
    defb ...
    Battle Bunny Battle Bunny July 2012 Development
  • 64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…

    ... /> di
    ld ($feff), hl
    ld a, $fe
    ld i, a
    ld hl, buffer1
    ld de, $d800
    ld bc, 512 ... /> fillpattern:
    ld bc, 4095
    ld hl, $C000
    ld de, $C001 ...
    na_th_an na_th_an July 2012 Development
  • Schematic of MULTIFACE 128Exist schematic of Multiface 128 ? I find on WOS only pictures of PCB layers. I mix both layers for possibility make schematic from picture, but it's…

    ... when "off" is selected and #00 when "on" is selected.

    000005EA: 3A 06 20 LD A,(2006h)
    000005ED: CB ...
    Jmk Jmk July 2012 Hardware
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... ; set b to hold $00
    ld c, a ; set the ... 2 ;
    ld (s_posn), a ;
    ld (df_cc), hl ;
    ld b, 8 ... ld (chrad), hl ;
    ld l, a ;
    ld a, (s_posn) ;
    ld bc ... 01011000 ;
    ld h, a ;
    ld l, e ;
    ld a, (attr_p ...
    chev chev August 2012 Development
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... ld a,(actualxcoord)
    ld e,a
    ld d,0
    ld ... ld a,(xcoord)
    ld d,0
    ld e,a
    ld ... /> rlca
    ld (shiftamount),a
    ... -right/2 00=0 01= ...
    uglifruit uglifruit August 2012 Development
  • DooM on Spectrum 128kHello my fellow WoS'ers My hope is that you can help me, recently I discovered a DooM clone -esque on the Humble spectrum, - here is a [URL="https:/…

    ... to... address
    ;format:
    ;+00 = (no. of repetitions+1) for ... /> .process
    inc hl
    ld a,(hl)
    inc hl ...
    .fill
    ld (de),a
    inc de ...
    .entry ;entry point
    ld b,(hl)
    djnz .process ...
    Hikaru Hikaru August 2012 Games
  • Converting UDG to 2x2I've got a udg that I want to display in different sizes. Obviously I just print it for normal size, I can use the udg in bin format to display it ea…

    I reinvented the wheel for ZX Basic a bit ago...

    [code]' My own dbl size.

    ' Mi idea es usar una tabla para la expansi?n de los nibbles.
    ' Para cada byte, se aislan los nibbles, se obtiene la tabla,
    ' y se vuelca dos ...
    na_th_an na_th_an October 2012 Sinclair Basic
  • Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…

    Disentangling your code looked too much trouble, so I wrote a quicker BASIC version then an assembler version of that (although that's rather slow even so). It could be written to run more quickly by not using the FP calculator but I expect that it would ...
    Battle Bunny Battle Bunny November 2012 Development
  • IX register woes - or is SPIN buggy?Or am I missing something? I'm trying to use the IX reg to acess a table containing an x and y coord. My code below just doesnt seem to work proper…

    Either LD A,(IX) exists or it ... it that doesn't contain 00.

    Whilst I can ... assemblers internally converting it to LD A,(IX+0) it does ...
    RobeeeJay RobeeeJay November 2012 Development
  • Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…

    ... 13 inc h
    14 ld a,h
    15 and ...
    17
    18 ld a,h ;why subtract eight ... add a,$20
    23 ld l,a
    24 ... seven? 010TTPPP say 010 00 111 would end up 010 ... 0 1111
    26 ld a,h
    27 ... add a,$08
    28 ld h,a
    29 ...
    Atari_Jetman Atari_Jetman November 2012 Development
  • IX register woes - or is SPIN buggy?Or am I missing something? I'm trying to use the IX reg to acess a table containing an x and y coord. My code below just doesnt seem to work proper…

    [QUOTE=RobeeeJay;662730]Either LD A,(IX) exists or it ... it that doesn't contain 00.

    Whilst I can ... assemblers internally converting it to LD A,(IX+0) it does ...
    Marko Marko November 2012 Development
  • Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…

    Here's a much quicker version; the BASIC now only takes 50 seconds, and the assembler is reduced from 318 secs to 17 secs. There's still scope for further improvements. The significant change is that it only executes the inner Y loop with valid plot points ...
    Battle Bunny Battle Bunny November 2012 Development
<1…17181920212223…34>

Latest Posts

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    John Elliott on April 21
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