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Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …
Well thanks to the advice here my blit/ ...
draw to buffer
blit to screen
redraw stuff to delete it ... stuff
draw to buffer
blit to screen
wipe buffer for ... -
Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…
... have added one more test to [URL="http://zxds.raxoft.cz ... tests, but rather than writing to screen memory, it pages the shadow ... screen in and then out instead.< ... /> In this case, the thing to report is the last T ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... gets the instruction to save the screen to the background it ... the instruction to save the screen is reached any writes to screen that ... use the buffer to hold back a write to screen until a ... write to the attribute map ... -
ZX PrinterI've picked up a ZX Printer and was wondering if its possible to use suitably sized thermal paper rather than the silver Sinclair stuff. If not, is …
... modern operating system to connect to 80's technology to print something that will ... after the first print, why would you want to continue or use ... . I'd rather send the print to a modern printer via some ... -
ZX PrinterI've picked up a ZX Printer and was wondering if its possible to use suitably sized thermal paper rather than the silver Sinclair stuff. If not, is …
... after the first print, why would you want to continue or ... /> I'd rather send the print to a modern printer via some ... with Dan. I spoke to him a few weeks ago ... plug into the IF1bis and print directly to a printer. He said ... me one if I want to try it out. Will ... -
BLUBER - The Last Odisey[B]BLUBER - The Last Odisey[/B] by Monty Designs. You need to collect 20 blue bubbles with a potion. For access to the last screen, it is necessary …
On screen four there is a ... material and head left back to screen three it is fine but ... step off to the left (higher) and exit the screen that way ... opposite side of the same screen four crushing the baddie ... appearing on the right of screen three.
I have ... -
New bicolour game: El Stompo.Phew! Finally finished my first game using Einar's fantastic Nirvana engine. [B]El Stompo.[/B] [IMG]http://i1142.photobucket.com/albums/n608/davey…
... SAM Coup? and Timex compatibility to BIFROST* and NIRVANA ? should be ... before raster beam rendering, according to the specific timing characteristics of ... new routine that draws directly to screen. And replace the raster beam ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... 't seem fair to R-Tape to distract from discussion ... />
Without resorting to code generation, I expect NIRVANA ... raster beam rendering, according to the specific timing characteristics of ... new routine that draws directly to screen. And replace the raster ... -
New bicolour game: El Stompo.Phew! Finally finished my first game using Einar's fantastic Nirvana engine. [B]El Stompo.[/B] [IMG]http://i1142.photobucket.com/albums/n608/davey…
... before raster beam rendering, according to the specific timing characteristics of ... new routine that draws directly to screen. And replace the raster beam ... in the NIRVANA thread[/URL] to avoid taking this thread too ... -
Ghostbusters - New Loader?[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002025"]Ghostbuster's[/URL] original loading screen was just a bunch of (c) credits and a mas…
... /> [LIST]
[*]CALL $995F = clear screen
[*]CALL $A741 = decompress bitmap ...
[*]CALL $ADC3 = copy buffer to screen
[/LIST]
The compressed ...
IY + 04 = attribute value to paint box with
byte to screen eventI have another question regarding assembly routine in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F LD DE,3F08 0608 LD B,08…
Yes but it just writes to screen after the INC H executes. So the value of H register increments at the same time the pixels appear on the screen.
I would expect the pixels to change before the H register changesNew Microdrive LabelsWe are arranging to get some new microdrive cartridge labels made - cost will probably be ?1.50 for a set of 10 labels (face and end label) plus post…
Rich,
I would be up for at least 2 - 3 sets.
Any chance they could be put on glossy printer paper?
Would be nice to be able to print to them, say on an A4 sheet. :-)
Russbytes bits balonyNever mind
... corner of
the screen to the bottom right-hand corner ... , you've just rediscovered linear screen organization :)
Yes, ... use some fast code to copy it to screen.
As ... organization than real screen, you just have to take it into ...ScrollsHello. Ive been working in scroll routines and I want to show you them. First, one vertical 2 pixels scroll routine with 13 sprites [youtube]D-T3…
Are you using a buffer or are you drawing directly to screen?ScrollsHello. Ive been working in scroll routines and I want to show you them. First, one vertical 2 pixels scroll routine with 13 sprites [youtube]D-T3…
[QUOTE=Ralf;767706]Are you using a buffer or are you drawing directly to screen?[/QUOTE]
Im using shadow screen :)
But In these days Ill try to do it in 48k models drawing directly to the screenUDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…
it's possible to grab data off the screen with any ... memory locations for the screen, so look at it ... of how you draw to screen and how things are ... difference , if you could trigger to auto refresh ?
to manipulate the contents of ...Tile engine and slight colour flickerOver the past few nights I've been working on a simple tile game engine for a rock fold game I'm making. While all is going surprising well I've not…
... it to move the problem to elsewhere on the screen but ... ld sp,screen_table ; Moves pointer to screen table (visable address of each ...
; Displays 8 pixel lines to the screen
ld (temp1 ...1984-2014here I will account for my journey through games released thirty years ago, just like last year for 1983 games, and you can do the same.
... ://www.worldofspectrum.org/showscreen.cgi?screen=screens/in-game/f/FizzyWizzy ... played gem but I got to screen two and the layout was ... decor was the same as screen one, and I just didn ...Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
... The code can be difficult to follow, unfortunately, because there ... . The renderer could draw to anything, including the display ... pipeline would be a clip to screen boundary followed by render ... which draws directly to screen.
If that ...Why are rotozoomers on C=64 so fast ?Hi, I noticed rotozoomers on C64 are really fast. I'm not the best coder on Speccy but I know my pet I never succeed to do rotozoomer (or rotating ch…
... a repeating pattern of chars to screen and then during the zoom ... chars. This gets the hw to update the entire display on ...I Can`t Stop Playing Ralphs Flappy BirdThis Is The Best Ive Done Yet,Got On To Screen 3 [url]https://drive.google.com/file/d/0BxusiBO3qBxGdkxmd0tvNlVIZVU/edit?usp=sharing:wink:[/url]
... Ive Done Yet,Got On To Screen 3
[url]https ...What if Sinclair had released a 16 bit Spectrum?Had Sir Clive not wasted his companies money on the white elephant that was the C5 and instead focused on competing with his rival computer manufactu…
... could itself be upgraded to 64k and it's ... />
with regard to c64 sprites, it's "sorta ... or the other trick is to overlay the chunky multi ... because of how you write to screen on star strike, it ... 's obviously suited to a spectrum
Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…
... as they are quite possible to stick text on. :)[/quote]
to 22 lines. You can make ... if you want and just print to that. However, the lower window ...Frames Per SecondHow many frames per second did the ZX Spectrum run at? I've found games that are 12.5fps but Ive recently been informed some games were at 25fps ...…
... graphic memory representing whole screen and sprite is just ... also draw sprites directly to screen memory or to another part of ... buffer. When you draw directly to screen you must hurry and synchronize ... it with screen refresh. So yes, you ...Frames Per SecondHow many frames per second did the ZX Spectrum run at? I've found games that are 12.5fps but Ive recently been informed some games were at 25fps ...…
... draw sprites directly to screen memory or to another part of ... . When you draw directly to screen you must hurry and synchronize ... only draw completed graphics to screen and you save time ... never draws intermediate graphics to screen, there is never any ...ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…
... snippet for writing masked sprites to screen that is fifty lines ... draws intermediate results on screen. To accomplish this it must ... only draw portions of the screen that change, at character ... to speed things up by only drawing changing areas of the screen ...Buffer to screen - how much?[FONT=Calibri][SIZE=3]I am starting to build a new game and am researching different ways to accomplish what I need to do. My question is, is it poss…
Better solution is not to copy entire buffer to screen, only the parts that changed from previous frame. Just use a table which determine which charecter cells were changed.
Drawback: on scrolling if less than 8 pixels this will not work very good.Buffer to screen - how much?[FONT=Calibri][SIZE=3]I am starting to build a new game and am researching different ways to accomplish what I need to do. My question is, is it poss…
... the stack PUSHing the buffer to screen behind the scan line, green ... can switch between the corresponding screen & buffer addresses just by ... /> Another option is not to sync to the scan line at all ... I say!) [/I]your buffer to screen and just not HALT in ...1st boss on R-TypeI've been enjoying playing this a lot recently, but am a bit puzzled by the level 1 boss ([I]though have reached level 6 without cheats yay!).[/I] […
... boss is still scrolling on to screen?)
when you do ...Microdrive usageAnyone here know about microdrive files? Had a few carts in, all have stuff on, heres an example cat 1 with the error message i get for every single …
Yep, I get the same when moving it to screen;
Microdriver (c) 1985 M.B.Daniells
