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  • Uridium on the Speccy: definitive version?Uridium is one of the staples of the C64 shoot-em-up canon. I first played it on the Speccy twenty years ago, but became much more familiar with it …

    ... the game to have single pixel smooth scrolling over less smooth ... , a no response to the above questions indicates a subjective opinion ... screaming abuse at the TV screen as I got shot at ...
    Spector Spector January 2007 Games
  • Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…

    ... Z80 disassembler that runs in screen memory with its own font ... code embedded in a normal SCREEN$ and you can try it ... magazine in three separate SUB-SET articles in 1987. Editor David ... the 0-16K area or above the attribute file.
    It ...
    Geoff Geoff February 2007 Development
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... cutting and pasting from a screen capture. Got an illustrated table ... specifying which screen WITHIN the map you start. The above pokes change ... the content of the top left screen of ... you start? Do you just set the bp arbitrarily and see ...
    48K 48K February 2007 Development
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... specifying which screen WITHIN the map you start. The above pokes change ... the content of the top left screen of ... the position of the starting screen within the map.[/QUOTE]
    set at #726C you will see where it gets the screen ...
    Mr. Anonymous Mr. Anonymous February 2007 Development
  • generated missionswhich speccy games randomly (or partly randomly, at least) generating their misions/scenes do you know, please? (combat lynx being a great example.) …

    ... /> The Wild Bunch: Just like above but wild west style, hmmm ... />
    Tank Trax: draws the screen how it feels as far ... apart from games like Jet Set Willy (which over time is ...
    dm_boozefreek dm_boozefreek February 2007 Games
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... /> ========
    you can set a bp at #85E2. HL ... br /> To trace the tune set bp's at #654E, #81BE ... 128k mode
    =========

    Set a bp at #EFD1 to ... only get to about screen 3 before I snuff ... around where you're breaking above.

    [quote] ...
    Mr. Anonymous Mr. Anonymous March 2007 Development
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... (it's an Issue 2). Screen stays black for the right ... lines up and down the screen as normal, (c) 1982 ... 16K only working. Ramtop gets set at 32768 etc, no upper ... can see all the RAM above 32768 - it just will ... lines up and down the screen are. I get that ...
    DEATH DEATH March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... (it's an Issue 2). Screen stays black for the right ... lines up and down the screen as normal, (c) 1982 ... 16K only working. Ramtop gets set at 32768 etc, no upper ... can see all the RAM above 32768 - it just will ... lines up and down the screen are. I get that ...
    Marcelo Marcelo March 2007 Hardware
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... caterpillar is on the next screen on the right.
    Cargo ... must have a free space above them, so if placing them ... you must leave 1 space above.
    I noticed the missing ... with Cybernoid when I`m set up.
    FrankT FrankT March 2007 Development
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... caterpillar is on the next screen on the right.
    Cargo ... must have a free space above them, so if placing them ... you must leave 1 space above.
    I noticed the missing ... is on lifts that are set to go down (F4-F7 ...
    48K 48K March 2007 Development
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... is on lifts that are set to go down (F4-F7 ... allow these to be drawn above a certain level so that ... view and disallow going off screen. It maybe getting confused when ... the bottom lift is off screen and the invisible tile is ...
    Mr. Anonymous Mr. Anonymous March 2007 Development
  • So how many of you have completed Jet Set Willy?It's obvious from these forums that there are a lot of hardcore Speccy fans here. So how many of you have completed (or come close to completing) [i]…

    ... to Jet Set Willy. There's only one really difficult screen (The ... Warehouse) where you need to do pixel perfect ... off with Jet Set Willy is falling off a screen and getting ...
    Matt_B Matt_B April 2007 Games
  • So how many of you have completed Jet Set Willy?It's obvious from these forums that there are a lot of hardcore Speccy fans here. So how many of you have completed (or come close to completing) [i]…

    ... to Jet Set Willy. There's only one really difficult screen (The ... Warehouse) where you need to do pixel perfect ...
    BloodBaz BloodBaz April 2007 Games
  • So how many of you have completed Jet Set Willy?It's obvious from these forums that there are a lot of hardcore Speccy fans here. So how many of you have completed (or come close to completing) [i]…

    ... to Jet Set Willy. There's only one really difficult screen (The ... Warehouse) where you need to do pixel perfect ...
    dm_boozefreek dm_boozefreek April 2007 Games
  • Bubble Bobble EditI thought I might have a go at editing Bubble Bobble myself after reading this... [url]http://www.worldofspectrum.org/forums/showthread.php?t=15452[…

    ... ,8 will show that segment set.

    I imagine you ... level data before going to screen.

    [QUOTE=mulder;181446 ... hex. Use level 2 or above for test purposes as the ...
    Mr. Anonymous Mr. Anonymous April 2007 Development
  • My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…

    ... the y pixel position as ...
    ccf ;set & complement carry ... ;
    ; Fades current screen to black ;
    ;---------------------------------------------------------------;
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • Bubble Bobble EditI thought I might have a go at editing Bubble Bobble myself after reading this... [url]http://www.worldofspectrum.org/forums/showthread.php?t=15452[…

    ... placed some correctly, they apear above the platforms they should sit ... positions actually lie on a screen and when you need to ... consider adding 2 and 4 (set bits 1+2) onto that ... or something. So the 69 above change to 6B first, watch ...
    Mr. Anonymous Mr. Anonymous April 2007 Development
  • Bubble Bobble EditI thought I might have a go at editing Bubble Bobble myself after reading this... [url]http://www.worldofspectrum.org/forums/showthread.php?t=15452[…

    ... positions actually lie on a screen and when you need to ... consider adding 2 and 4 (set bits 1+2) onto that ... or something. So the 69 above change to 6B first, watch ...
    mulder mulder April 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... character set.
    2. Write byte to screen.
    3. Increase screen pointer ... line where the next pixel is the next screen row below this ... work out where the next pixel shoudl be in the frame ...
    Winston Winston April 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... /> ; Adjusts screen address HL to move one pixel down in the ... : Carry = moved off screen
    ; HL = moves one pixel down
    ; used ... = 25.7 cycles. The above would change a little bit ... to draw those extra blank pixel rows above and below the sprite ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... /64 = 25.7 cycles. The above would change a little bit ... work with the main register set, perhaps with BC=source (inlined ... layout for both its 6k pixel area and the 6k attr ...
    obo obo May 2007 Development
  • Image adviceAt the moment I am looking at the image conversion tools available on wos. With this in mind i have converted a jpg to spectrum format. Original im…

    ... really mono with a 8x8 pixel colour oveerlay.

    This ... one of the speccy pc screen utilities.

    This way ... /> Would anyone dissagree with the above?
    Toxitalk Toxitalk May 2007 Sinclair Basic
  • Converting m$ to dataI created a maze using a matrix of 704 characters. In order to save memory, and since the maze it's just walls and spaces which could be interpreted …

    ... RESTORE function that packs your screen into 88 bytes (stored at ... /> Damn, sorry zxbruno, my "snapshot" above was another link to the ... RANDOMIZE USR 60037
    To set the "wall" colour, POKE 65075 ... , colour
    To set the "path" colour, POKE 65076 ...
    BloodBaz BloodBaz May 2007 Sinclair Basic
  • Faster Pussycat, yer man (UDG)Right we are almost into a game area. Ive started to play with UDG and by using bins and pokes I can redesign graphics to my hearts content. Now Im…

    ... way too slow. The screens pixel area starts at 16384, and ... /> I know I can set the screen display as 'scan lines' but ...
    Toxitalk Toxitalk May 2007 Sinclair Basic
  • Faster Pussycat, yer man (UDG)Right we are almost into a game area. Ive started to play with UDG and by using bins and pokes I can redesign graphics to my hearts content. Now Im…

    ... characters in the ZX81 character set.
    So you ... an "X" immediately on the screen.

    The ... the ZX Spectrum character set when you do a ... characters onto the text screen, or pixel cells onto the ... Hi-res screen.

    The ...
    hldswrth hldswrth May 2007 Sinclair Basic
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... TOP part of the border (above the screen) by:

    set up Interrupt Mode 2 ... has started drawing the screen proper. Watch out ... attribute buffers to draw the screen).

    4 ... be updated before the main screen is encroached.
    < ...
    BloodBaz BloodBaz May 2007 Development
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... of the screen? And during some short moments it is above or ... below the actual Spectrum screen (in the ... be printed on the tv screen?

    Regarding flickering, do ... the sprite (for example one pixel to the right) and just ...
    Rickard Rickard May 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…

    ... the spectrum's character set. So in this C ... of the spectrum's character set. The type declared for ... location of the character set. On returning to basic ... render to the screen one complete pixel row by writing ... the spectrum's character set. By adding 8 times ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... br />
    sp1_UpdateNow(); // draw screen now

    for (i ... />
    ;GRAPHIC DATA:
    ;Pixel Size: ( 16, 24)
    ;Char ... this case, in the calls above, the sp1_CreateSpr() and sp1_AddColSpr() ...
    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…

    ... calculating the screenaddres to a pixel.
    When I lower 1 ... pixel I test if it's ... .

    In a 8 pixel line it is calculated twice ... b,Y-COOR ; I set start left above, not left below!
    Dr BEEP Dr BEEP July 2007 Development
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