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draw single pixel in the borderI have problems with drawing in the border. I can get it to draw a line ,but it always becomes a line and not a single pixel. <br><br>rept 3580 <br…
I have problems with drawing in the border. I can get it to ... can see a blue block in the top left corner. Is ... as I am using for border drawing? -
FAST and SLOW .TAP loading in RESIDOSWhy is in RESIDOS this TAP file loaded always too slow ? (with lines in border area). Other TAP files on my drive is fast loaded, but loading this fi…
Why is in RESIDOS this TAP file loaded always too slow ? (with lines in border area). Other TAP files on my drive is fast loaded, but loading this file is always slow.
[url]http://velesoft.speccy.cz/other/tapslow.zip[/url]
VELESOFT -
Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…
... stack instruction to maximize performance in copy/shift/mirror routines. during ... understand that test on beam drawing lower border could look like:
in a, ($ff)
and c ... -
Pong[IMG]http://www.rickard.gunee.com/projects/video/pic/ponggame.jpg[/IMG] Bats are on the left and right side of the screen. On ZX Spectrum there are …
... extra t-cycles available when drawing @ edges of screen (i.e ... t-cycles we could say border is a bit wider on ... to make full screen pong (border pong) possible? I'm almost ... is possible to do it in border with bats on top and ... -
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…
... displayed on the screen.
In detail, the address which is ... , the ULA is busy drawing the border and it does not read ... =sharing][sna][/url] - only works in SpecEmu I believe. This was ... much literally unaffected by this in any way
- Why, nevertheless ... -
Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... expense of full multicolour
;in player scoreboxes).
;
... of lower RAM block for drawing sprites in border-time.
;
;+ ... />
;Put stack pointer in space just below handler:
in table
ld e,(hl ... -
Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... )
in the same time ULA draws border. the border color is ... right border for every pixel line (one line takes 224t, drawing one ... time (drawing pixel part of screen, not left/right border) ULA ... care about multicolor or effects in border}.
good ... -
The Sing-clair ProjectFollowing on in a way from [url=http://www.worldofspectrum.org/forums/showthread.php?t=11800]this[/url] thread, I have had an idea. How about if we …
... left hand side
Border flicking, drawing in the loading screen
little ... -
Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…
... timing tricks to draw things in the border (well, extending the horizon ... , but it's hardly drawing in the border - just a colour change ... you actually playing on the border, although it's a ... say the nifty scrolling routines in-game are more groundbreaking ... -
Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…
... timing tricks to draw things in the border (well, extending the horizon ... , but it's hardly drawing in the border - just a colour change ... to worry about the border. Changing the border half-way through the ... still manage to change the border at exactly the right ... -
Opinion on new 128K only gamesHello, Being new to the WOS community, I am unclear on the attitude towards 128K only software, that is; Is there a strong need to support the 48K m…
[QUOTE=gasman;483501]Then, if IN 65533 returns 42, you have ... ULA will be still busy drawing the border and won't disturb ... -
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…
... they can operate in the uncontended time of drawing the border and only ... -
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…
... 16-48k speccy, you could in a,(255) and it'd ... , was cycle counting, as done in border fx or attribute fx routines ... stuff be it start drawing the screen, or border fx, or attribute ... -
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 …
... used an extra row for drawing in new blocks.
... can just redraw one tile in your new row, so ... the whole of the bottom border, the fly back and the ... next top border - that's 120 scan ... frame to draw the sprites in. And if you sort them ... -
Border art viewerRecently, we were working with diver/4d on border art. The idea was to push the techniques of drawing on the border to the limit and to see, how much…
... into the port in BC on CMOS processors. This border viewer does ... use all 8 colours for drawing on border at what is, effectively ... the best possible resolution: using border pixels made of 24x1 screen ... computer with AY sound chip. In the current beta, I simply ... -
Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…
... ******** I'm afraid. BorderTron is in NO WAY based on any ... beyond running the tap file in an emulator once or twice ... of yours in there at all.
Drawing in the border is not ... at the high score table in Dark Star for an example ... -
Pseudo-3D map renderingHave been mulling this over for a while, until that isometric thread prompted me to ask. I'm not sure if this is officially classed as 2D, 2.5D, or 3…
... won't fit many sprites in if trying to beat the ... PLAYER STRADDLES HAS A PLACE IN A JUMP TABLE, the routine ... all before the top border (if drawing in top border that is).
*The routines in my[URL="https://docs.google ... -
SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
... /showthread.php?t=44788"]my border art viewer[/URL] does need ... commands to achieve 8 colours in border drawing without any limitation on the ... get hold of CMOS Z80 in this day and age). As ... use of CMOS Z80s, hence, in my opinion, it is important ... -
SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
... showthread.php?t=44788"]my border art viewer[/URL] does ... commands to achieve 8 colours in border drawing without any limitation on ... single stepping will result in the acknowledgement code running ... so 'fixing' P/V in interrupt acknowledgement seems the best ... -
Screen buffer Tip from Raff CeccoRaff very kindly gave me this tip: "Incidentally, I remembered a trick I used on the Z80 for extra speed: When clearing the screen buffer, it was a…
... br /> I suppose, that in simplest case you don't ... is done with top border and it starts ... />
2. Start drawing in top playing area, going down ... changes will be seen only in next interrupt
< ... Now you should be drawing in screen bottom while raster ... -
draw single pixel in the borderI have problems with drawing in the border. I can get it to draw a line ,but it always becomes a line and not a single pixel. <br><br>rept 3580 <br…
I have problems with drawing in the border. I can get it ... pixel in the border.
Even so, the border can ... as I am using for border drawing?
Yes, but ... complex tasks while keeping everything in sync, especially considering that ... -
draw single pixel in the borderI have problems with drawing in the border. I can get it to draw a line ,but it always becomes a line and not a single pixel. <br><br>rept 3580 <br…
I have problems with drawing in the border. I can get it to ... far the CRT beam travels in how ever many T-states ... -
Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…
... does the real Spectrum behave in this regard? I assume it ... will be 255 when drawing the border and display bytes when the ... -
Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…
... will be 255 when drawing the border and display bytes when the ... check.
[/quote]
In Timex machines floating bus is ... -
Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…
... will be 255 when drawing the border and display bytes when the ... check.
[/quote]
In Timex machines floating bus is ... running this sort of loop in SpecEmu with Kempston disabled:
ld a,b
in a,(#1F)
inc a ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
[quote="Crisis;919551"]Further in 16k everything is always FC, ... Contended.[/quote]
Bear in mind that you do get ... frame when the ULA's drawing the border at the bottom and ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
[quote="Mysterion;919583"]Bear in mind that you do get ... frame when the ULA's drawing the border at the bottom and ... bus to sync start of drawing the next frame of visuals ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
... "][quote="Mysterion;919583"]Bear in mind that you do ... when the ULA's drawing the border at the bottom and ... to sync start of drawing the next frame of ... br /> [/quote]
In that case, you also have ... this
.lp1
in a,(#FF)
inc a ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... now possible to exploit it in software (much like it was ... exploited on the previous Spectrums in games such as [i]Cobra ... almost done implementing this behavior in SpecEmu.
When we ... ULA is drawing the border or during the four T states in between ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... ULA is drawing the border or during the four T states in between ...
