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Flood FillHi Folks, Can anyone point me to a flood fill that I can call from ZX BASIC? I have looked through the archive and although there are posts about…
... . I set up a short routine that reads starting pixel coordinate, ... any pending pixels visited on screen.
The EXTERN ... invocation indicated in the source above will turn the output ... br /> Fill the screen from the middle pixel with a RAND USR ... -
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... 't hold the current working set of variables in registers (working ... . This is because for pixel placement on screen the engine has to ... form the graphic written to screen.
Here is the ... code above is repeated eight times for the 8 pixel rows in ... -
P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... do it. Assuming the active screen area is 20 characters high ... it's the amount of pixel bytes needed to transfer, ( ... /> Details:
- Code is running above #8000, in order to run ... .
- Copies buffer to screen memory using set of LDIs.
- Buffer ... -
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…
...
There is an entire set of display address manipulators in ... shown in the simple examples above.
The ... zx_pxy2saddr() stands for "pixel x y to screen address" the first ... bitmask corresponding to the pixel within a screen byte.
New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…
... fact the Cap'n moves pixel by pixel rather than in 8 ... replicate it on the first screen.
But when I ... , I didn't have anything above the player.
... be sure to grab a screen shot.
Some ... instead of using a different set.Jet Set Willy 2's original author releases a modded version of the game!Apologies if this has already been posted, but Derrick P. Rowson, the original author of Jet Set Willy 2, has been modding JSW2, and the latest versi…
... extended the parameters for the set up and use of ... completion and removed the one pixel limit on jumps
< ... up
changed sprite screen edge handling.
added ... />
And the above, plus 146 rooms still runs ...ZX-Paintbrush and global palette and ula+ supportHello, I think I need some help for the palette issue of ZX-Paintbrush. I want to check whether the way I'm about to clear the palette handling i…
... get a 64 byte raw set of CLUTs, I am doing ... .3.1 or above) and Image2ULAplus (1.3 or above).
; 1 ... ) In ZX-Paintbrush, ensure all changes to images\screen ... $1800 bytes of screen.scr are 8x1 attributes, in pixel order, loaded ...ZX-Paintbrush and global palette and ula+ supportHello, I think I need some help for the palette issue of ZX-Paintbrush. I want to check whether the way I'm about to clear the palette handling i…
... get a 64 byte raw set of CLUTs, I am doing ... .3.1 or above) and Image2ULAplus (1.3 or above).
; 1 ... ) In ZX-Paintbrush, ensure all changes to images\screen ... $1800 bytes of screen.scr are 8x1 attributes, in pixel order, loaded ...Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…
... left until hitting a set pixel or the screen edge
... right until hitting a set pixel or the screen edge,
; setting pixels ... as we go. Check rows above ...Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... the required address (above 32768) and all ... LD HL,MainScreen ; screen address
LD ... screen file
ld bc,$18 ;0 into B; 8 pixel ... rows x 3 screen thirds ... screen address
djnz loop ;repeat 256 times and set ...Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... the third line in the above listing
should be ... br />
You could set B to zero and put ... though why would I set aside 768 bytes of ... the background; you just set the attribute, then add ... , if your screen is made of 16x16 pixel blocks then your ...Fast Binary to Text DisplayI've done this thing that takes some memory contents and converts it to a Binary version of 0's and 1's on screen. However, I've no idea what to use …
... pixel "spacer" down the side), so each character on screen ... in the code image above are filled in with ... with the single bit set for each character. That ... code]
So you set that leftmost bit to work ... need that leftmost bit set, so ORing 0x88 sets ...If Sinclair computers had not been sold...I was just having a random thought. If Sinclair Computers (or the rights to them, not sure how it 'worked' back then) had not been sold to Amstrad…
... pixel being drawn in the bottom right of the screen ... drawing the top left pixel exceeds the minimum refresh ... one crystal for the pixel clock (the ULA circuitry ... a attribute cell is set to flashing, you can ... above. And to add the logic for a shadow screen. ...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…
... a
; blit 16 pixel rowdata to screen in cells at column ...
; blit 16 pixel rowdata to screen in cells at column ... loop above, can optimise a bit
; blit 16 pixel rowdata to screen ... .goloop
ld b, 11 ; set inner loop counter
dec ...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…
... />
; compile time switches, set to 1 to enable
set)
setink2x2
ld ... above, can optimise a bit
; blit 16 pixel rowdata to screen ... ; A -> attrib to set when clearing screen
cls:
di ...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…
... />
; compile time switches, set to 1 to enable
above, can optimise a bit
; blit 16 pixel rowdata to screen ... /> ; A -> attrib to set when clearing screen
cls:
di ... 0
ld b, l ;set B to 0. it causes ...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…
...
; compile time switches, set to 1 to enable
above, can optimise a bit
; blit 16 pixel rowdata to screen ... A -> attrib to set when clearing screen
cls:
di ... br /> The collision detection routines set the carry flag if there ...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…
... />
; compile time switches, set to 1 to enable
ld (hl), a
; set attrib line below
ld ... above, can optimise a bit
; blit 16 pixel rowdata to screen ... ; A -> attrib to set when clearing screen
cls:
di ...Identify game - flip-screen mazeI was playing this game in the mid-80s, I would say. It was a flip-screen game, a bit like Jet Set Willy in that regard, although it was viewed from …
... was a flip-screen game, a bit like Jet Set Willy in ... small gaps.
Each screen was a bit of a ...ANNOUNCE: Jet Set Willy: Goodnite LudditeI have just released my new Jet Set Willy game, the long-awaited sequel to We Pretty: GOODNITE LUDDITE! It's the best game I've ever made: atmospher…
...
Goodnite Luddite is set in a Selesian monastery (today ... Set Willy: The Lord of the Rings
+ Manic Miner Screen ... Editor
+ Jet Set Willy Construction Kit version ... beta versions)
+ Jet Set Dizzy (public beta version)
ANNOUNCE: Jet Set Willy Construction Kit (JSW CK 1.0)Today I release Version 1.0 of my Jet Set Willy Construction Kit (JSW CK): the program I used to write We Pretty, Jet Set Willy: The Lord Of The Ring…
... 1.0 of my Jet Set Willy Construction Kit (JSW CK ... to write We Pretty, Jet Set Willy: The Lord Of The ... want to change one thing. Above all, the way it handles ...z88dk Spectrum Screen Driver problemHi guys, I've been messing around with z88dk a bit and was trying to output some stuff to the screen. Reading the docs, it says that I can use the Z…
... output some stuff to the screen. Reading the docs, it says ... can use the ZX screen driver to set the x and y ... after my screen clearing routine in order to set the screen to 32 ...Jet Set Willy Problems...I THINK I've completed the "Lord of the Rings version of Jet Set Willy...I've reached the "Grey Haven" (or whatever it's called) but when I jumped ov…
... the Rings version of Jet Set Willy...I've reached the ... I've made a loading screen in "OCP Art Studio", how ...Dan Dare 256 colour project many may not be aware of.I still need/want to try Vladimir's emulator. But I think many people here aren't aware of another 256 colour project, which was mentioned on C.S.S. …
... mood for an afternoon's pixel painting
(or a look ...Does Screen Flipping work on a 48k Spectrum?On the other post it showed some basic code to flip the screen on a +3. Does it work on a 48k Spectrum. Can anyone show me the machine code to: Se…
... basic code to flip the screen on a +3.
Set the screen memory to default 16384
Flip the screen memory to 49152
FAST PIXEL DRAWINGI'm looking for the fastest way to put a pixel to the screen (on spectrum ofcoz:). Here is my own procedure (written in PASMO). But I don't how do it…
... way to put a pixel to the screen (on spectrum ofcoz:). Here ... me?
;============================================================================
; put pixel
; d = x
; e ...Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…
... contended memory and finite-speed screen refresh - I don't plan ... , seeing as how having a pixel-perfect display is not what ... in my emulator, as described above ? Are there many such programs ...Antique Toy 2004 Voteing ( Music/Graphics )In case anyone doesn't know or missed it, at RAWW.ORG and SCENERGY they mention voting for Antique Toy compo is happening now until August 10th. If y…
... And so, at last work above antique toy 2k4 voteform is ... br />
Remember! We set off only _completely_ the filled ... (in the middle of the screen the button "save") will ... top corner of the screen, and to click on ... corner
of the screen or a key "G" ...Pixel setting / general speccy codingi just started doing some cross-coding with the [url="http://www.bigfatpanda.fsnet.co.uk/z80.html"]Z80 SNA assembler[/url] and an emulator, and this …
Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
...
; based as opposed to pixel based system
; ... 0
call 8859 ; set permanent border colour
; HL Contains Screen Address
; DE Contains Char ...
