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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 screenPush/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 ...BOB the Screen BuilderHere's my first attempt to use that tokenising idea from "more on storing mazes" in a screen designer - "[url=http://www.users.globalnet.co.uk/~jg27p…
... on storing mazes" in a screen designer - "[url=http://www.users ... /pourri/bob.zip]BOB the Screen Builder[/url]". There's two ... much room as possible for screen definitions (there's about 30kb ... necessary to design a full screen each time, as the OUT command ..."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
Issue 2 Spectrum - Black screenHi I have an issue 2 spectrum which I'm having some issues with. I bought it on ebay so have no idea of the history or how it came to be broken. Whe…
... with various output to the screen every time I turned the spectrum ... on. either coloured garbage or back screen ... with an almost completely black screen. You could almost say though ...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 ...New loading screen: Wizard's LairLately, I was a bit busy again with ZX Paintbrush graphic designer tool, painting some other alternative loading screen, this time it was the turn fo…
... some other alternative loading screen, this time it was the turn for ... an old title but all-time classic as Stephen J. Crow ... the game incorporing this new SCREEN$.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 ...Speccy 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 …
... done without a viewable second screen though, and probably was done ... :
Draw the screen to a buffer area. Copy it to ... the viewable screen area on an ... that is the time taken to copy the screen. That time would be ...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 ...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…
... TS1000 machines. Your mention of Time reminded me of [URL=" ... http://www.time.com/time/personoftheyear/archive/covers/1982.html"]Time Magazine' ... an interested kid at that time -- it was full of ... allows you to alternate what screen buffer you were updating and ...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. ...Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…
... , then LDIR to the main screen. Early days I suppose, and ... it 2/3rds of the screen each time.
I am ... am using the attribute control buffer similar to Manic Miner (only ... could do all this without screen tearing. The music was also ...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 ... object previously rendered to the screen buffer.
The Texture Processor ... Sony really specified at the time.
I may have ...Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... for every line of the screen - no time left for loop counters ... can be pre-setted before screen rendering starts (it can be ... example). this give you some time to compute and update parameters ... same MSB (depends on your buffer)
then use loooooong ...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 ...Star Wars scroll/crawl/title effectI may have seen this type of scroll on a Speccy game before, but I've never seen it as a type-in or part of a cover tape. Does anyone know how to do …
... with the distance "into the screen" (the z coordinate) determining scale ... your characters on your work screen, you divide the paper x ... find the position in your buffer screen, and plot the item there ... full CLS of the work screen each time. I'd have uploaded ...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
...Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
... speed. It loads itself onto screen buffer, and loads other parts from ... have spent quite a lot time polishing and trying to compile ...Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... />
Sorry I have no time to finish the demo and ... the demo is doing the screen buffer copy between the eight frames ... (using shadow screen). So you have many cycles ... vertical scroll are used at time).Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... />
Sorry I have no time to finish the demo and ... the demo is doing the screen buffer copy between the eight frames ... (using shadow screen). So you have many cycles ... vertical scroll are used at time).[/QUOTE]
impressive :grin ...
