-
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... POP BC ;At present routine is written to handle< ...
HALT
CALL DRAWSPR ;Call sprite drawing routine
< ... />
* Routine to Generate a screen address ... />
* Routine to generate a table of ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... br />
; **** START INTERRUPT ROUTINE ***
MainLoop:
; ...
; **** END INTERRUPT ROUTINE ***
Start:
... ; 8 = RO:Pause Counter
; 9 = Pause Target, when it hits ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
...
; **** START INTERRUPT ROUTINE ***
MainLoop:
; ... br />
; **** END INTERRUPT ROUTINE ***
MoveAndPrintSprite:
... 8 = RO:Pause Counter
; 9 = Pause Target, when it ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> LD (OKTOFLIP),A
HALT
JP MAIN ... /> RETI
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> LD (OKTOFLIP),A
HALT
JP ... /> RETI
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... lp1
halt
LD A,1 ... /> RETI
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... cleared that space, by using HALT, and then waiting for (128 ... then make sure your sprite routine has finished drawing the sprites ...Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... . I start with HALT command to begin my routine with new interrupt ...TZX formatQuick question: What is the current pulse level at the start of a TZX file? Difficult question: Why does the format say that the final pulse shoul…
... ]
The ROM save routine doesn't add any extra ... a problem because the trailing pause specified by the TZX block ... render a complete non-zero pause after the last block in ... file, to let the loading routine see the additional high-to ...GraphicsI can't find this posted anywhere else, but how do you use graphics, other than circle, pixels and lines? For example, how do you draw a filled box o…
... /> draw 0, 150, c
pause 0
cls
next ... , I cloned the spectrum draw routine to use in my own ...FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…
Using Halt is fine for this sort ... at some point if using halt, otherwise you would never get ... returned to your routine, ie. the instruction imediately following HALT.
routine that way you could start ...Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... the disassembly of the SAVE routine in the ZX81 ROM, counting ... each bit there is a pause of 4354T, then another wave ... -pulse and 4689T for the pause.
I haven't ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... PAPER).
Therefore the routine probing the 'floating bus' is ... can safely insert a halt instruction at a convenient ... further, by possibly relocating the 'halt' instruction.
However, ... perfect patch since the 'halt fix' method undoubtedly uses ...Help, my Sprite Code wont workI have zipped it all up here: [url="http://www.peargames.co.uk/downloads/galagorf.zip"]http://www.peargames.co.uk/downloads/galagorf.zip[/url] If y…
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... screen address from the above routine.
[CODE];---------------------------------------------------------------;
; Incy ;
halt instruction just before you start ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... the drawing routine:
[code]
spritedrawroutine
halt
... simple "xorsprite at hl" routine. It needs hl to ... [/code]
the routine still works, but now draws ... I simply duplicate the entire routine from spritedraw down, it ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... on PC, quite a gonzo-routine on Z80. This
; could ...
; ----------------------------
; Faster than previous routine.
; Uses only one 16 ...The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... is quite a CPU intensive routine) doesn't interfere with the ... waits for the emulation to pause (while waiting for synchronisation to ...Trying to experience nostalgia!! Mp3s needed!!!I've been trying to get audio files (mp3 or wav) to work on my real old sinclair 48k. I've tried making them from my old tapes of which I have many, …
... . In short, we measure the pause before and after the tones ... clarification from a load/save routine may get us timing accurate ...The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... out in the save/load routine, if they left it in ... can fix them with the pause ms before and after the ...Delay routine requiredI'm putting together a short routine to play some Beep style music. I need to be able to pause between notes when required. These pauses are defined …
... 'm putting together a short routine to play some Beep style ... need to be able to pause between notes when required. These ... 'm after a routine that will allow me to pause for the ...Delay routine requiredI'm putting together a short routine to play some Beep style music. I need to be able to pause between notes when required. These pauses are defined …
... 'm putting together a short routine to play some Beep style ... need to be able to pause between notes when required. These ... 'm after a routine that will allow me to pause for the ...The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…
... where the vector table and routine are.
Better, IMO, to ... to $fe, then put the routine at $fefe. Less wastage.
HALT or DI before the first (setup) routine too.
routine in the top page, especially ...The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…
... where the vector table and routine are.
Better, IMO, to ... to $fe, then put the routine at $fefe. Less wastage.
HALT or DI before the first (setup) routine too.
routine in the top page, especially ...The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…
... an interrupt service routine you need to do ... address of your interrupt routine... which is why in ... the address of your interrupt routine is at $fefe.
... table, and your interrupt routine, you then LD I, ... just a HALT before running the setup routine. DI won ...Getting scr addresses from x and yCould someone please tell me how to calculate the 8 screen addresses corresponding to a character printed in basic at coordinates x and y? For examp…
... like to do. The following routine allows you to move a ... : LET y1=y
3139 PAUSE 0
3140 IF INKEY ...Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... a breakpoint on the IR routine, but what if interrupts are ... /> [/QUOTE]
If you pause ZXSpin and right-click on ... the pause toolbutton, you can use the ...Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…
... up your own im2 interrupt routine that replaces the one in ... song. So, yes, the ROM routine is totally useless but the ... an im2 interrupt routine, but is instead relying on HALT to wait ...New Game - JustinA new isometric 3D Game for ZX Spectrum, Justin: [url]http://cpce.emuunlim.com/justin.tap.zip[/url] It can be played in spanish and english languaj…
... a routine to activate/deactivate invincibility (press Enter to pause ... /> CALL keypress ;run keypress routine
LD A,$EF ... /> CALL keypress ;run keypress routine
JP $E4E9 ;continue ... />
The borderloop routine was supposed to flash the ...
