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Fastest way to clear a screen.We haven't had an optimizing fun for some time, so let's have some: What's the fastest way to clear a screen (i.e., filling the 6912 bytes at 16384 w…
... 's the fastest way to clear a screen (i.e., filling the ... -
Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…
I want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is possible. Can anyone advise on how to call this command or some similar routine to clear the screen? -
Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…
... was wondering fastest way to clear the screen.
I've ... -
Optimisation Needed! Is this the Fastest way to copy bytes from screen and back again?I have the screen address (say 0,0 i.e 16384) I want to copy 4 bytes wide by 32 bytes high from the screen to an area of memory. I then want to cop…
... (4433 TStates to copy from screen to store)
Basically ... copy2store
; Clear the screen to show we are bringing ... /> ; Copy from store to the screen
ld hl,16384 ... -
Mode 2 Tile Editor SourceA Timex Mode 2 Tile Editor incorporating a byte mirror table. The compiled version is available in the CSSCGC 2008 collection from the WoS archive. …
... /> ; Clear both screen areas in mode 2 without altering low res attribute ... screen two
m2cls_2:
ld (hl),a ; clear ... 6133 remaining bytes to clear
ldir ; wipe screen
ret ; ... with the second
; screen area.
... -
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 ... 'At the top of the screen, the Evil twister appears as ... sits on the final screen, coiled aound a spiky ... without a chance to clear the screen. My .rzx isn' ... -
Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... br /> ld (hl), c ; low byte of the output routine ... /> ld (hl), c ; low byte of the input routine ... ld (hl),e ; the low byte of the offset
; clear the screen and the attribute area
clear h
ld l, a ; low byte to l ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... _vdu_flag) ; signal lower screen
call cl_line ; clear lower screen
res 0 ...
inc hl ; address low byte
ld a, ... (hl) ; low byte to A
dec ... next_o_3:
inc hl ; skip low byte
org ... -
48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
... audio outputs is too low or borderline for ZX ... /> If you get any screen corruption, assuming you can enter ... the copyright message, type CLEAR 32767. This will ... Then use CLS to clear the screen, then you can see ... if the screen corruption comes back...
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... a specific screen location, line wrapping, scrolling,
;* clear screen, the character ...
;clear the screen before we show it
screen
;**************************************************
#define ...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…
... br /> sprite8x8a:
; calculate screen coordinate of top of cell ... e, (hl) ; e = low byte of screen address
inc hl ... first instruction wrong because CLEAR 32767 puts some ... the addresses below the CLEAR address, which is ...
to clear the screen.VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…
... , so that I can clear the screen before redraw without flicker on ... the screen, I do this by peeking ...Dotty (Dollarsoft) - Bug... ?!?Hi all ! If you ever been frustrated with baddies in pacman game (they're 'stupid' but they always win, soon or later), this one is cure :) Game …
... is playable and you'll clear the screen as 1-2-3 ...Timex questionI've been writing a program for CCG2008 and it actually has a use for the 512x192 mode of the Timex computers. I read up about port 255 and how the d…
... value you put after a CLEAR? :???:
I've never ... />
My program starts with CLEAR 30000, so it expects SP ... I was trying to clear the screen of the second half of ...Games by Spanish Software House CEZ GSWe have taken on a stock of games from Spanish software house, CEZ GS, which all feature good graphics and are imaginative. Saves having to order th…
... Land - platform game
Betiled - clear the grid by matching 3 ...
Cannon Bubble (128K) - clear the screen by shooting matching cannon balls ...Help needed with simple MCode routineI'm trying to code a routine to clear the screen and I can't figure out why it's not working: ld hl,16384 ld bc, 6144 loop:ld (hl),0 inc hl dec bc l…
... to code a routine to clear the screen and I can't ... about a third of the screen.
Please help, it's ...Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
... simpler/quicker routine that will clear the screen with the ATTR P ...BIFROST* Advanced Programming - part 1In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. …
... execute:
*
* 10 CLEAR VAL "32767"
* 20 ... frames = 1;
// clear bitmap screen
printMode(32);
zx_border ... = BIFROST_DISABLED;
}
// clear multicolor attributes (no glitches since ...BIFROST* Advanced Programming - part 2This second demo shows animated and moving tiles together, and also how to implement collision detection. This knowledge should be enough to implemen…
... these are drawn "manually" on screen.
Also notice ... frames = 1;
// clear bitmap screen
printMode(32);
zx_border ... = BIFROST_DISABLED;
}
// clear multicolor attributes (no glitches since ...BIFROST* Advanced Programming - part 3This new demo demonstrates the BIFROST* built-in sprite support that I mentioned before. In BIFROST*, "sprite tiles" are 2 special tiles that BIFROS…
... "manually" draws a tile on screen (using drawTile), this may take ... />
[*] "Manually" drawing tiles on screen (using drawTile) only works properly ... /> frames = 1;
// clear bitmap screen
printMode(32);
zx_border ...BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…
... single pixel. Depending on the screen position, the program will choose ... to execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD ...BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…
... to execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD ... /> frames = 8;
// clear bitmap screen
printMode(32);
zx_border ... move");
// draw background screen and disable tile map areas ...BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... you can have on screen at the same time using ... :
*
* 10 CLEAR VAL "32767"
* 20 ... = 140;
// clear bitmap screen
printMode(32);
zx_border ... automatically draw entire tilemap on screen)
for (f = ...Game of 1988 and ArkanoidI chose Arkanoid for 87 as I'd always loved Batty - and believe it or not - have wonderful memories of thru the wall with my brother and late dad. S…
... by admitting I could not clear a screen of Arkanoid! Ah, well ...ZERO Emulator - BugsI have been using Zero emulator to experiment a few routines in assembly, since it has a somewhat usable debugger. However I believe I found a few b…
... /> The following example block will clear your screen (pixels onlyThe Artist II on Speccy +2AHi, I'd like to ask if someone here can run The Artist II on real +2A. I tried several copies, 48k tape version, 128k tape version, even +3 disk v…
... . Usually enough is to clear the screen and then select raster, if ...Hacker QuestionHello hackers, as some of you might know, I am supervising the work on converting games from TR-Dos or TAP to the +D or Opus disk format for our SC…
...
8 CLS
10 CLEAR .: LOAD "" SCREEN$: POKE .,. : LOAD ""CODE: RANDOMIZE ...Tapes 85-88Hello! I am hoping this will be of interest to some of you. I've recently rescued everything I could from cassettes that have been sat in my loft …
... from scratch in assembler. Clear the screen of attributes with your lazerbike ... you start the game, the screen is blank. In addition, there ...
