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Question on copying screen bufferHi, Al my prevoius games were copying graphics directly to screen memory starting at 16384. Now I'm experimenting with screen buffer where I could d…
... with screen buffer where I could draw my graphics as much time as ... I would copy it to screen memory.
You may ... just copying static image from buffer to screen after HALT.
Return of Speccy screen buffer formatI recently discovered that the Spectrum screen buffer format that allows only two colours in an 8x8 pixel block has made its return in a slightly dif…
... recently discovered that the Spectrum screen buffer format that allows only two ...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…
... :
When clearing the screen buffer, it was actually much quicker ... to the end of the screen memory area and push zero ... onto the stack until the screen area was filled.
Screen Viewer: Speccy View 4SpeccyView (v4.0) Here is my new zx spectrum screen viewer, result of this weekend's work. Features: Loads: -Standard Screen Files (6912 byte raw …
... Features:
Loads:
-Standard Screen Files (6912 byte raw .scr ... )
-Sna File (Shows screen buffer of ram image, 48k/128k ... match border colour to the screen,
-Loading and header ... manually resize it back every time you open a screenshot. ...off screen bufferwhen using an offscreen buffer is the memory copied to the screen in a way that makes it easier to draw sprites to the buffer? E.g. Lets say you…
... offscreen buffer is the memory copied to the screen ... of the screen where you copy your buffer to,
if the buffer was copied to the screen so that the ... /> draw background on buffer (or just clear it ... draw sprites on buffer
copy buffer to screenSpeccy 128k Double Buffering.If I understand this right, you display either of the screens, and draw to the one that is not being displayed. Am i right in thinking that the Non …
... a memory buffer (ie, not using the extra screen):
1 ... simple screen selection code). Copying a buffer to the screen takes ... a considerable amount of time.
screen, and still won't compare time-wise.
...The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... machines. Your mention of Time reminded me of [URL ... ://www.time.com/time/personoftheyear/archive/covers/1982.html"]Time Magazine' ... share of the market. Compare this to Texas Instruments, Commodore ... you to alternate what screen buffer you were updating and ...Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... ----
Such a long time ago that I can hardly ... />
Z buffer simply used the Z information to compare the depth ... object previously rendered to the screen buffer.
The Texture ... Sony really specified at the time.
I may ...Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…
... been known for quite some time now that the 48k SNA ... work right at the next time.
I have ... graphics buffer or something, so the next time annomalies appear on the screen ... . In the time of 48k ...Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... about masks from a long time ago (microhobby rules! ;), but ... /> 2b. AND + OR from temp buffer to screen.
3. precalc ... + OR from preshifted sprites to screen.
Variants ... then LDIR to real screen at interrupt time.
3. ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... character sprite to the screen takes three cycles of ... bytes passed over each time, but then I'm ... if throwing over a screen buffer version instead, which is ... Could also break the screen buffer into 2x1 blocks and ... limit, thus using a screen 28 bytes across. I ...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 …
... sprites routine method of a screen buffer and when I finish to ... I dump all the buffer in the real screen. The problem is ... that the action screen must be little becouse if ...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…
... that Bo Jangeborg uses for screen handling aren't up ... long time that uses an LDIR instruction to move the screen buffer from ... avoids any problems with the screen refresh that occurs every fiftieth ... /> Now I thought I understood screen flicker issues, but I don ...A new loading screen for "Where Time Stood Still"Original thread by user "toniman" at ZonaDePruebas forum: [url]http://www.zonadepruebas.com/viewtopic.php?f=4&t=2036#p6313[/url] The author of this …
... />
The author of this screen is MAC, one of the ... toniman, MAC has drawn this screen using Art Studio in a ... mouse, etc.
Original screen:
[img]https://lh4.googleusercontent ... .gif[/img]
New screen by MAC:
[img]https ..."Chronos": how fast should it really be?I was reading [URL="http://timfollin.pwp.blueyonder.co.uk/Archive.htm"]Tim Follin's webpage[/URL] the other day and came across a curious remark abou…
... ones take the most processor time. Once this is done is ... scroller that shifts the off-screen buffer by 4 pixels during each ... "s, literally, just waste precious time, and quite a lot of ... hl ; take care of misaligned buffer
DUP 25
Defective +2 grey with only random coloured screen while powering onHi, so the story goes: After buying myself an divIDE and a grey +2, this runs well for a few days. But while playing a game the picture stucks and …
... coloured.
At this time I?ve attached a Kempston ... key of this, the screen changes one time to another random picture ...Twister: Mother of Charlotte - Help with final screenGreetings, I'm close to finish my next submitted game to the RZX Archive, which is '[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005488"]…
... br />
The last screen is giving me some trouble ... -----
'On the final screen it's time to do battle with ... At the top of the screen, the Evil twister appears as ... the base of the screen begins to flash. A ... sits on the final screen, coiled aound a spiky ...TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…
... to have a complete screen on your TV. So ... we paint the entire screen file with RED on ... time, we won't get a flashing screen, but instead a striped screen ... an off screen buffer, since we have more time, and in ... fact have half a buffer that ...TommyGun with Debugginghttp://goo.gl/HfSXev?gdriveurl Ok, so this is a pretty big release for me and I have added a lot of stuff into the code editor. Mainly of course …
... are drawing on screen or in an off-screen buffer.
The ... /> There is an off-screen buffer viewer; with which you can ... /> These buttons control the time lapse replay feature of the ... Off Screen Buffer View
Can display multiple buffers at a time< ...Textured Scanline Flood Fill for ZX Spectrum 48KPity that it's quite hard to contribute code to WoS in a straightforward manner. Recently, I have created a textured/hatched fill M/C routine for the…
... Leave some space for shadow screen buffer
20 GO SUB 9000 ...Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... /> 2b. AND + OR from temp buffer to screen.
[/quote]
screen at interrupt time.
[/quote]
Much ... talented Spectrum programmer of all time. Cobra is a masterpiece. The ...T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …
... data from linear backbuffer to screen... aprox 14.59T/B
buffer
;FIRST TIME START HERE ... h ;4 HL' down in screen
; effect on Z flag ... ;37 145 move pointer to screen down
ld a ...The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
The Time article estimated sales for all ... games. They barely update the screen fast enough to fit between ... on NTSC they have less time (60 vs 50 fps) plus ... allows you to alternate what screen buffer you were updating and just ...Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…
... take a frame of time. Double buffering works well ... was updating the (offscreen) screen buffer as it was "2 ...
[ROM] [ON-SCREEN-BUFFER] [CODE] [OFF-SCREEN-BUFFER]
Obviously, ... screen" and "off screen" buffers would be swapping all the time. ...Jet Set Killer...Don't have that many ideas for this one... except the name and Miner Willy on a killing rampage trough out his ouse... (or maybe a jet set willy typ…
... habitable once more.Each screen has a time limit to clear the ... by walking off screen! Not clearing the screen before the time limit expires ... removed from the current-room buffer (to make it disappear instantly ...GIGASCREEN with MULTICOLOUR 8*2Riskej made the pic. Pulsar coded the engine. I'm watching it on the 128+ at the moment and it is very stable. The file: [url]http://speccy-live.u…
... 128k / grey+2? a full screen, buffer swapping multicolour picture?
< ... border in sync with the screen colours; thirdly it changes ... there was any spare slack time in these routines then ... screen of this quality can occupy the majority of the processor time ...Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
... byte per character in your buffer screen.
This way ... move or redraw your buffer as it's less ... You then translate the buffer into real graphics as ... it all over to the screen.
In ... to redraw the entire buffer each time from a map, ...KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…
... , and always off-the-main-screen surface (that is, mainly when ... the refreshing images in the screen buffer when showing the ball in ... a real CRT PAL TV screen by seeing some details: color ... beam would display at any time driven by the ULA, and ...Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…
... that stop me in principle. Time to work on it is ... use the buffer - for example, have music on the opening screen that ... 's in the screen buffer. I think Fairlight ...How to Write ZX Spectrum Games As some of you may know, it has long been my intention to produce a document which explains pretty much everything I have learned - and am still lea…
...
One Key at a Time
Multiple Keypresses
... 't Come One at a Time
Using the Index ... Look-up Table
Calculating Screen Addresses
Shifting
... Buffering
Creating a Screen Buffer
Scrolling the Buffer
...
