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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…
There are lots of ways to optimise this - are you bothered about memory? e.g. the ldir to clear the screen is very expensive. A quicker way is to set the stack at the top of the screen, ld hl=0, and then 3072 push hl statements -
+3 disksok i got a question here. Can i put the +3 disk images that i use on the emulator back on to a proper +3 disk ? If so how would i do it and what wo…
... /> "screen" code 32768,6912
So you would type clear 32767 ... loaded, type
SAVE "SCREEN" CODE 32768, 6912
Clear to 24499 and load the ... -
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
... assumption that HL contains the screen address, but as the poster ... a routine to calculate the screen address from the XY coord ... , using a lookup table is quickest), that will add a good ... -
RARE/Ultimate games!I recently bought an XBOX 360 and Perfect Dark Zero, and it made me realise how much i missed RARE and Ultimate - Play The Game. Anyone else have an…
... smooth, non-jerky movement, and clear, consistent sound. This was at ... , the N64 logo appears on screen, as it did in most ... -
ZX ShedNow that issue 2 is out and it's fairly obvious it's been a great success, we have to start considering issue 3. Thanks in part to the quality of wri…
... be an improvement to create clear page margins - when I print ... this magazine is meant for screen or print - the text is ... -
ZX ShedNow that issue 2 is out and it's fairly obvious it's been a great success, we have to start considering issue 3. Thanks in part to the quality of wri…
... />
Difficult to read on screen
I don't ... least the font here is clear but the broken background image ... -
ZX ShedNow that issue 2 is out and it's fairly obvious it's been a great success, we have to start considering issue 3. Thanks in part to the quality of wri…
... ]
Difficult to read on screen
I don't ... few hours staring at the screen, it was starting to bother ... least the font here is clear but the broken background image ... -
how do I tune the speccy to tv?hello folks :) I am come here for help rather than because I am still a speccy person. I did start with the ZX, many moons ago,had a couple of thos…
... /> The tv is showing a screen half white and half red ... to dispose of with a clear conscience.
[ This Message ... -
The never-released sequel to Wriggler?I have a vague memory of seeing a sequel to "Wriggler" by Romantic Robot advertised once - I think it was in an old issue of Sinclair User or Crash. …
... .
I think the quickest way to the skeleton key ... off the bottom of the screen. You will fall down a ... -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
... as a number on the screen
Associated keywords ... different colour borders on the screen. It writes to the ... the border colour of the screen. The other bits should ... *******************************
It?s as clear as mud, really!!
Timex 80 column display driverI subsequently wrote an 80 column font driver for 512x192 mode.
... /> ld a,(de) ; a = screen byte
and 3 ; keep ... br /> ld a,(hl) ; a = screen byte
and #c0 ; keep ... br /> and #f8 ; clear out scan line portion of ...Is this fair/legal?About a year ago, I bought a (512MB) mp3 player, and after a while it stopped playing music in one channel. I took it back to the shop, and they repl…
... unusable, DVD drive was unusable, screen was shattered & detached, hard ... box was undamaged, it was clear that I had caused the ...Bruce Lee is really easy stillNow I post this just for a laugh, for the simple fact that any speccy game that seemed easy years ago won't now. However Bruce Lee was easy anyway, a…
... did try to make this clear in my earlier post) I ... ... but only in the first screen :lol:
just accidentally find ...Shoot-em-up Development UpdateHi Folks, I am still working away at my horizontal scroller. Here is a link to let you see progress. I have re-written the scrolling routine to make…
On each loop, do you clear the whole screen and draw only the ...Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…
... these commands in Fuse:
CLEAR 63999
LOAD "" CODE
screen addresses, etc) are coming back ...What should be the base address to set for my codeHi, I am new here and I have a simple question but one which I have not found an answer to. When I am developming my programs what should I set th…
... not be slowed when the screen is refreshed. Memory below that ... a simple loader - but use "CLEAR xxx" just to make sure.ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... to "sp1_UpdateNow()" draws the entire screen.
"sp1_TileEntry()" ... />
When the screen is finally drawn in "sp1_UpdateNow ... // for occluding sprites, clear pixel buffer before draw
clear the pixel buffer before ...costa capers ..Is CC a real followup to technician ted or what? I thought about the name.. coz it has nothing in common :)
... can get yourself to the screen with the yellow motor, ... /costa1.jpg]this[/url] screen. You may have to ... go briefly onto the tickets screen. In this case get ... think that you will clear it easier with the ... /costa2.jpg]this[/url] screen next. You need to ...costa capers ..Is CC a real followup to technician ted or what? I thought about the name.. coz it has nothing in common :)
... can get yourself to the screen with the yellow motor, ... /costa1.jpg]this[/url] screen. You may have to ... go briefly onto the tickets screen. In this case get ... think that you will clear it easier with the ... /costa2.jpg]this[/url] screen next. You need to ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... several different sprite types on screen.
2A-2C Illustrate exactly ... sprites don't look too clear on such a background :)
screen all at once. This time ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... br />
sp1_UpdateNow(); // draw screen now
for (i ... ) // if sprite went off screen, reverse direction
se-> ... so that SP1 will clear the pixel buffer before ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... bit 4 = 1 clear pixelbuffer, bits 3:0 ... 0, 32, 24}; // full screen
struct sp1_Rect clip1 = { ... sp1_Invalidate() invalidates the entire screen, using sp1_ClearRectInv() makes ... // if sprite went off screen, reverse direction
se ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... structs to different screen addresses, to rearrange the screen. This one is ... highest priority that does not clear the pixel buffer before it ... same-size rectangular areas on screen; the first is the ... or more active graphics on screen) but the disadvantage is ...files on +3 discHello! I have question. As you know, when Spectrum +3 loads CODE file from tape, you can get by CAT command from audio header to which address it…
... numbers you see displayed on screen.
Use of the ...
You should
CLEAR 24575 (one less than the ...YSRnRY TV Prog: 1986 chapter OUT NOW!The 1986 chapter of the documentary is OUT NOW! Watch as the Speccy world changes forever with the arrival of the 128k machines! See Sinclair Researc…
... better than on a computer screen.[/QUOTE]
Oh yes ... player. You get a crystal-clear picture with *no* MPEG compression ... top and right of the screen, and the centre is expanded ...Games Club - voting for WC 06/05/2006Here's the choices for the next week.
... sure what happens when you clear the screen, I expect there are ...mire mareproof? [url]http://pic15.picturetrail.com:80/VOL600/2588775/9185163/153133785.jpg[/url]
... CHR$ 6+CHR$ 6 would clear the whole line). Every Alkatrazz ... in the middle of the screen.mire mareproof? [url]http://pic15.picturetrail.com:80/VOL600/2588775/9185163/153133785.jpg[/url]
... CHR$ 6+CHR$ 6 would clear the whole line). Every Alkatrazz ... in the middle of the screen.[/quote]
yup, and you ... writing the text on the screen and then repeatedly overwrite with ...Egghead IV on Zx Spectrum +3Egghead IV does not work on Zx Spectrum +3 in 128 mode. You have to switch to 48k mode or in "spectrum" mode. Do anyone know how to fix this (maybe …
... and replace "" with filenames for screen and code (you choose names ... yourself, i chose "eggh4s" for screen and "eggh4c").
... />
Then enter command CLEAR 24199 to clear memory for other two ... ,6912 you load and save SCREEN$
And at ...Garry Lancasters +3e site down?Hi, I have been trying to access Garry's page about the +3e ROM, because I know of a utility for the +3 he has on the site which makes it possible f…
... ? I just want to be clear about this before attempting it ... the +3 motherboard (hence the screen problems when it accesses).
