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Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... the raster with your re-drawing and try to avoid needing ... is always going to run in contended time - just copy 16 ... itself to do the PUSHes in the border time and avoid all ... 8 bytes of each line in another routine that will take ... -
Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... features like stencilled graphics and drawing svg shapes.
To change border colour you can use "zx_border ... using the display address manipulators in C.
... explanation, they omit the details in their manual.
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... string you store the data in RAM and PEEK the values ... .
[code]100 BORDER 0: PAPER 0: INK 7 ... REM
130 REM Store drawing data
140 REM
Contended memory article on WikipediaYeah, apparently there's one. https://en.m.wikipedia.org/wiki/ZX_Spectrum_Contended_Memory [quote] However, the ULA must wait for a Z80 read or wr…
... a vertical blank (maskable interrupt) in order to update sprites has ... 't occur during the drawing of the border, but that isn't ... old/new sprite (which results in "tearing")ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…
... updated at once by only drawing squares that have changed since ... locked to the raster position in order to update attributes as ... , in the case of nirvana, sprites are drawn during the top border ... using the same method but drawing to pixels rather than attributes ...128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... br />
1. During border time, both contended and regular ... memory regions. - No slowdown in this case. A counter-example ... execution window due to changes in sprite numbers etc, typically ... things like sprite drawing loops or beeper routines in fast memory ...z88dk terminalsto set up a terminal a bunch of numbers are needed: m4_zx_01_output_fzx(_window_1, 0x2330, 0, 0, 1, 14, 1, 19, 0, _ff_ao_Prefect, 14, 0, 14, 8, 1…
... of [b]zx_01_output_fzx_mine[/b] in file [b]zx_01_output_fzx_mine.asm[/b ... while the raster is not drawing to the screen. Following a ... 192 cycles to the bottom border. So wait that long and ... mode because halt is used in the scroller. The print_word_wrapped ...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…
... 's about the order of drawing the sprites on the Y ... the beam is still in the top border area (the missile might ... beam reaches those areas. So in a sense, I’m doing ... more sprites, so got interested in the floating bus trick. Then ...Witchcraft: Nirvana, Bifröst and such[url="http://www.rgcd.co.uk/2011/10/buzzsaw-zx-spectrum.html"]"When considering this next to nearly every other ZX Spectrum game though, Buzzsaw is l…
... moving mulicoloured objects (bats) in the game. Of course ... were moveable and multicoloured in the screen area. ... border effects, but it is using PAPER multi-colouring for drawing ... and a bit odd in its appearance but ... the only pixels it's drawing.
...im looking for a fill routine written in basici know this would be slow but i want to tinker with it to produce something else.
... 0: OVER 0: INVERSE 0: BORDER 0: CLS
... 120 plot some random stars in colours 5,6,7.< ... right-hand-edge and jump in by an increasing random ... pixel. But the sum in line 350 can move it ... efficient to jump the drawing point left in increasing steps than ...Short unattended type-in'sThis follows a similar topic on the BBC/Acorn forum (said topic can be found [url="https://stardot.org.uk/forums/viewtopic.php?f=2&t=14919"]here[/url…
... POKEs set the paper and border to black. It draws 10 ... connected lines in a colour and then switches ...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…
... of changing that one line in the ROM and then ... , you can see it in my combi-screenshot pic of ... reason I chose a different Border colour was simply so it ... you can see it starts drawing from what (would be " ... [/img]
Apologies in advance to BB if I ...Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…
... me something to do in the top-border time between the interrupt ... is similar with hl correction in the middle of the ... after "jp nz,screen_copy_loop" measured in Xpeccy emulator (without contention) is ... t most critical part in the long run. Drawing lines into the ...border effectsive been playing around with border effects like 10 border 1 20 border 2 30 pause 1 40 goto 10 ,etc i even wrote one in machine code. …
... changing the border colour while the TV is still drawing it.
in the background of lots of ... each line or even (in the top border) a short part of ... .
They also work in most emulators nowadays because they ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... not drawing anything else.
Additionally it works in Zeus ... but not in Spectaculator.
If ... ;
out ($fe),a ; border change
ld de,%0100111101000000 ... ;
out ($fe),a ; border change
ld hl,level ...Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…
... it takes to draw the border on the right, flip ... at exactly which tick in a multi-T-state ... predict.
But in many cases the contention pattern ... . The data is written in amongst the code, for ... its own functions for drawing tiles that take account ...Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…
... thing. It's common in games to limit the ... multicolor games. With that in mind, there's no ... more, such as drawing tiles in the upper border, etc... which I ... don't require. In ... fact, I might be able to use the upper border ...Fuse/SPIN vs Spectaculator border timingsHello, I'm trying to figure out at which moments the 48K ULA samples the current border color into its internal latch. To do that I wrote a small …
... the screen area starts drawing at tick 14336 imply ... screen will be rendered in a way that compensates ... and what actually happens in hardware. In the case of Fuse ... the color of the border chunk that is already ... then it should start drawing that chunk at tick ...Have you got a project or are doing anything interesting during lock down?I’m “having” “fun” cutting shapes in wall tiles to fit around the electrical switches, sockets and heating/boiler control box in the utility room. …
... canopy which was originally prototyped in steel but never went ... available, to be mounted in frames with silicone rubber cushioning ... paper and pencil, laboriously drawing out the full canopy on ... model which would look impressive in size, very important, that ...Smallest playfield game?What is the game with the smallest playfield? I'm not referring to map size, but where the action takes place. Some examples: - Jet Pac: The acti…
... across and 8 down situated in the middle third of the ... file, with a nice little border. My pal and I were ... without any cropping required when drawing them. I learnt a few ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... practical as a loader). Border drawing requires very fine-grained timings ... T states would typically result in visible flickering an so ... subsequent loops (as usual, in between loading the data), enabling ... I also had another system in the making, one that uses ...New release of ZEsarUXFound today by chance on: [url]https://github.com/chernandezba/zesarux/releases/tag/10.1-13122021[/url] [quote]ZEsarUX-10.1 Beta1 Pre-release che…
... , that can read contents in the range of the total ... location
Fixed disabling border when realvideo enabled on machines ... was generated
-Fixed drawing scroll bars when window is ... all windows
-Fixed drawing close button on background windows ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... disassembler
; change the border colour between vblanks to see ... row -> offset of row in screentable (= tbl_scraddr + row*16 ... -> offset of y-coord in screentable (= tbl_scraddr + y-coord ...
; 16 byte buffer for drawing graphics which are not on ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... />
Pretty sure all the drawing is done before the raster ... I can't see it in Spin, but it is not ... before halt
I set border colour to cyan when I ... of the loop and sets border colour to black again.< ... /> I'll put some code in later to read frames so ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... disassembler
; change the border colour between vblanks to see ... row -> offset of row in screentable (= tbl_scraddr + row*16 ... row -> offset of row in screentable (= tbl_scraddr + row*16 ...
; 16 byte buffer for drawing graphics which are not on ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> and have a switch for border drawing on/off
and ... draw_border ; don't draw a border
[/code]
If ... you draw the border as well it will get ... draw it after the player in the main loop)How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> and have a switch for border drawing on/off
and ... draw_border ; don't draw a border
[/code]
If ... you draw the border as well it will get ... draw it after the player in the main loop)[/quote]
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... simplest routine in there.
The main loop and border drawing is ...
