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<1…18192021222324…34>
  • First steps in Z80 machine codeI never got into machine code much back when I had a speccy, as I didn't have any development tools at the time. The only machine code I'd previousl…

    ... 8x8 character at any pixel row on the screen. Made many ...
    Arjun Arjun July 2007 Development
  • First steps in Z80 machine codeI never got into machine code much back when I had a speccy, as I didn't have any development tools at the time. The only machine code I'd previousl…

    ... 8x8 character at any pixel row on the screen. Made many ...
    Digital Prawn Digital Prawn July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    [code]
    1 LET n=191: BORDER 0: PAPER 0: INK 7: CLS : DIM i$(3,9):
    FOR i=1 TO 3: LET i$(i)=" # # # # ": NEXT i: LET p=16: LET b=0: LET a=p:
    LET s=0: FOR y=0 TO 14: LET e=y/2=INT (y/2): FOR x=(1-e)*24 TO e*24 STEP e*2-1:
    PRINT AT 21 ...
    Digital Prawn Digital Prawn July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... display address down one pixel row
    [/code]

    The ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... on a left hand half-row. Likewise 0,9,8 appears ... of a right-handed half-row. These quirks are useful to ...
    Digital Prawn Digital Prawn July 2007 Development
  • Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…

    ... y-cord of a pixel row for the speccy in assembly ... Y address of each pixel row.

    But are there ... co-ord of a pixel row efficiently? It would be interesting ...
    Metalbrain Metalbrain July 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... at the end of each row to be cleared, in order ... the stack, thus blanking the row (as with all stack-pointer ...
    bobs bobs July 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... :

    Lets say B = row, c = column, D = number of ... /> ; Work out address of first row/column character
    ; The ROM ... the line start from the row number in B, trashes DE ...
    hldswrth hldswrth July 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... of characters.
    ;
    ; B = row, C = column, D = number of ... /> ; Work out address of first row/column character
    ; The ROM ... the line start from the row number in B, trashes DE ...
    hldswrth hldswrth July 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... at the end of each row to be cleared, in order ... the stack, thus blanking the row (as with all stack-pointer ...
    Fikee Fikee July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... I should really bring the row of the player's gun ... the gun (It ends one row short at the moment). That ...
    Digital Prawn Digital Prawn July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... way down to the same row as the player gun. It ...
    Digital Prawn Digital Prawn July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... /> extern uchar __LIB__ *zx_cyx2saddr(uchar row, uchar col);
    extern uchar ... __LIB__ __CALLEE__ *zx_cyx2saddr_callee(uchar row, uchar col);
    [/code]
    row, I think you need to ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…

    ... (hl), 255 ;Test: fill complete row
    ld a,h ;Mask ...
    and 7 ;sub char-row.
    inc h ;Go to ...
    Arjun Arjun July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... the original version used every row and colum of the screen ... player gun up by one row. There's now a "safe ...
    Digital Prawn Digital Prawn July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... player gun up by one row. There's now a "safe ...
    Dr BEEP Dr BEEP July 2007 Development
  • Games you have completed (no cheating)Beach Head. erm....that's it.:-(

    ... 7 times usually) in a row in penetrator any time. [/QUOTE ...
    cichlasoma cichlasoma July 2007 Games
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... 224 cycles for each pixel row. This means, with the scroll ... on the 24th row, there is about 14000+224 ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…

    No don't do that. The lower 16k is the lower left row of 4116 chips. The higher ram chips are of different kind, the one cannot substitute the other.
    You'll probably cause more damage if you do that.
    gtsamour gtsamour July 2007 Hardware
  • Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…

    ... ... 10 ULA chips in a row can't all be faulty ...
    Phu Phu July 2007 Hardware
  • Webcam time againI've put the webcam on for a while, whilst I enjoy a bottle or two of wine. [url]http://80.176.91.198/[/url] Let's see your webcams then...

    [quote=karingal;202321]Just the one glass?[/quote]

    What ... you want him to set up a few in a row and down them all in one go?

    Skarpo
    :-
    Skarpo Skarpo July 2007 Chit chat
  • Webcam time againI've put the webcam on for a while, whilst I enjoy a bottle or two of wine. [url]http://80.176.91.198/[/url] Let's see your webcams then...

    [quote=Skarpo;202326]What ... you want him to set up a few in a row and down them all in one go?

    Skarpo
    :-?[/quote]
    Now that'll be web-cam worth viewing
    rich_chandler rich_chandler July 2007 Chit chat
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... screen address of top of row where message is placed

    void init_scroll(uchar row, char *s)
    {
    disp = zx_cy2saddr(row); // get screen address for top ... // rotate left one pixel row in buffer
    memcpy(temp ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Retroeuskal '07RetroEuskal is an annual event for enthusiasts and interested people about Retrocomputing that is held within [url=http://www.euskalencounter.org/en/…

    ... things like scans on a row.
    they want a real ...
    zyloj zyloj July 2007 Sinclair Miscellaneous
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... used to scroll a pixel row on screen left one pixel ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... 5 keys of a half-row (up to 3 simultaneosly pressed ...
    Digital Prawn Digital Prawn July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... BEEP. 3 shootdowns in 1 row is impressive, I've only ... string array - something like a row and a half of BASIC ...
    Digital Prawn Digital Prawn July 2007 Development
  • pc joystick queryhello i like using a joystick on my PC,but as such i am having problems.i would like to use a joystick i had for amiga(cruiser i think)and i did som…

    ... /> but without the 4 button row to the left.

    gtsamour gtsamour July 2007 Hardware
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... [] array will be in row major order, which means ... travels across the entire row before dropping to the first ... column in the next row. Ie: g_land[0] is ... c]". The choice of row-major order is more ... order which happens to be row major order.

    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
<1…18192021222324…34>

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