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Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... use OUT 254,A to set the border colour. Copy some ... if you only copy data above the line the TV is ... each row of the screen and the screen is drawn from pre ... registers and PUSHed to the screen in the right order so ... that it's redrawing the screen from a block map ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... you aren?t using shadow screen, are you? If not, ... required by the shift table above.
[QUOTE=climacus; ... person with problems With the screen routines.[/QUOTE]
... 16x16 square moving in pixel steps around the screen - but I suddenly ... -
PLOT and DRAW in machine codeHow do you go about it? If I posted a really simple BASIC instruction could someone do a machine code routine so I could learn from it? I wouldnt k…
... /> call PIX2SCR ; compute hl = screen address from pixel coordinates
ld ... br />
The PIX2SCR code above is starting with the X ... to see what the code above does but it is ... to a screen address using a routine like the above. This is ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... same order as a SCREEN$ load -- ie pixel rows are drawn all ... over the screen. Whereas a line order update as mentioned above would ... see the old frame above a certain pixel row and the new ... , the next sprite will be above it so won't appear ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... at the expected position in screen. Something silly must go wrong ... ]
Strange, if I set up org address as 32768 ... ? I thought if I'm above 32768 I'm safe as ... -
Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…
... again, it's a 4-pixel scroll so if it is ... to render to a hidden screen then copy to the ... 's also limited in the screen area - 26x16 characters. But ... remember there was only one set of tiles loaded in ... the game created a preshifted set when it had loaded - ... -
Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
... why I only set the attributes. Setting the 8 pixel bytes of ... . If you can clear the screen in under 20ms, then we ... -
Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
... why I only set the attributes. Setting the 8 pixel bytes of ... . If you can clear the screen in under 20ms, then we ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... NXT, where the screen is actually a pixel-map but with the ... ]
and the character set is at the end. -
New monitor queryHello all Ok,i have got a new monitor and it's working OK.But i might have got it plugged in slightly wrong.I am using a VGA cable from Monitor to P…
... say this because I always set my resolution to the max ... amount of code on one screen as possible. However, I've ... its too sharp for the pixel resolution to keep up.
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... likely a simple RET for screen draw timings to begin with ... vector table from 65024-65280 (set I=254 in IM2 to ... timing.
I then set my stack pointer to 0 ... , I can use the addresses above the table (65280 upwards) for ...WANTED: Britain Invaded! instructions[deleted]
... fit on the ZX Spectrum screen. Not sure how high it ... a direction on the on-screen "compass" i.e.
set to constant value at the ... more evenings!
The above details can certainly be refined ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... to draw the scenery, afterwards set all tiles to special index ... the hero sprite yourself on screen without bothering with attributes.< ... the multicolor area centralized on screen, so a game can ... implemented as above, although they will have to be flip-screen and ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... .[/QUOTE]
If you set all tiles to "special mode ... like "Exolon" as I mentioned above.
Besides documenting how ... BIFROST* synchronizes perfectly with the screen raster beam to eliminate all ...Manic Miner ZX81Hi Guys, Can anyone explain why [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0017539]Manic Miner ZX81[/url] is not able to reproduce the ex…
... ROM it looks for character set data, by pointing it to ... things can't be drawn pixel-perfect. Anyway, you only had ... like having a character-based screen where the characters are all ...A virtual machine in WindowsHas anyone any experience of a virtual machine in Windows? I'm thinking of trying this, mainly "just because", but also slightly because any Windows …
... 3 of the programs mentioned above support shared folders, or you ... the way I have things set up, I prefer these two ... the background, so the only screen space taken up by my ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... /> Notice I inverted the order above so it will load the ... will be some garbage on screen and the reason will be ... be using a different tile set (perhaps on a different address ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... * demo (instead of the original set of tiles) to see it ... a black corner in the above linked picture[/QUOTE]
screen directly.
If you ...ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…
... there be snow if I set "I = $BF" and ... interrupt that occurs during the screen refresh (e.g. when ... far from drawing the actual screen. The ULA Snow is ... between the ULA requesting pixel and attribute data at ... the 128K Spectrum and active screen is paged in at ...New projectHello, you can see my new project for Spectrum in this link. I think that I finish it in few weeks. I hope you like it [URL="http://www.youtube.co…
... demo. The first was a set that resembled SnowBros, which ... not using masking). The second set was a 'fattened' version ... whizz across and down the screen. Anything touched by a moving ... ;)
Hopefully, the points above will help anyone downloading this ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... 613196]not every pixel :D at least one pixel isn't ... t it actually fill the screen rather than clear? It ... lot of space on the screen. Maybe there could be ... of address $4000 is never set). Other constants can be ... out before the 64 pixel bits are blanked out ...New Game! Uwol '81 [ZX81][img]http://www.mojontwins.com/wp-content/uploads/2012/03/s1.png[/img] Yup, we have ported our most-ported game to date to the good ol' ZX81! Using …
... do pixel-perfect movement as there's no real bitmap. The screen ... is text-mapped, as in you can't set an individual pixel ... each character cell. The character set is fixed, you can't ... ), but it doesn't allow pixel-perfect placement either.
3D Wireframe/vector animation creator and player?Is there any software that can help record wireframe 3D animations by creating a file that stores just the coordinates and lines? If the answer is "n…
... rotation
If you set R = (1 0 0), (0 ... distance to the TV screen. If you set d=1 to simplify ... of human to screen.
The perspective projection above assumes the ... (hence negative d for the screen position).
Seems ...Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
... found : hl = ptr, C flag set
; else : hl = ... 0, NC flag set
;
; uses : af ... wrote library routines. The above I hope works :) ... customized for a different screen configuration or memory map ...3D Deathchase on the Commodore 643D Deathchase has been ported to the C64, at least according to Micro-Mart. According to this week's MM, the port is called Hell Racer, and here's a …
... 't support the 4:1 pixel ratio sixteen colour modes).
set pixels share a hue value ... sprites with the sprite priority set in a certain way that ... to "tint" areas of the screen a different colour - if you ...Android Layouts...Does anyone on here know anything about layouts for Android apps?? I have a question about layouts which is probably very simple to answer if I wasn…
... /> (not to scale)
Above is the sort of layout ... easy peasy, I can just set that to any decent png ... the centre of the apps screen centre.
Any ideas ...Android Layouts...Does anyone on here know anything about layouts for Android apps?? I have a question about layouts which is probably very simple to answer if I wasn…
... /> (not to scale)
Above is the sort of layout ... easy peasy, I can just set that to any decent png ... would:
screen width / 2 = centre of screen
red box ... /> Presumably you can get the screen width from within android? Calculating ...Android Layouts...Does anyone on here know anything about layouts for Android apps?? I have a question about layouts which is probably very simple to answer if I wasn…
... (not to scale)
Above is the sort of layout ... the centre of the apps screen centre.
... of screen sizes as you never have to set the ... the button containers. Again set the [B]width [/B ... to house the buttons. Set their [B]weight [/B ...Z80 emulation C source with a permissive license?Could anyone recommend a good (all opcodes, proper timings) Z80 emulation code in C with a simple permissive non-viral license? Something without a w…
... programs years back (including a screen saver, that used the +D ... as WTFPL, according to the above post!), meaning (to me) 'do ... Soaked] PC?" When You've Set Your Heart On Staying At ...
