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Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... of the "visual FLASH synch" routine which gives a stable non ... by including the "PAUSE 1" (as PAUSE does a HALT, so I thought ... it would improve the synch). Without the PAUSE ... : LET n=0
2 PAUSE 1: LET n=(INKEY$""): LET ... -
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... of the "visual FLASH synch" routine which gives a stable non ... by including the "PAUSE 1" (as PAUSE does a HALT, so I thought ... it would improve the synch). Without the PAUSE ... : LET n=0
2 PAUSE 1: LET n=(INKEY$""): LET ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... -states) the #FF routine triggers, then just pause that amount after interrupt ... be reliably replaced with timing routine with no flicker...
halt the program until the screen ... 99% of the time the routine will exit at approx 14 ... -
New game: SETO TAISHO VS YOKAIHello Spec-chums! At last, my new game is available for download: [img]http://www.alessandrogrussu.it/zx/Seto-art.jpg[/img] [b]Features:[/b]…
In kempston joystick routine is small bug. ... for next functions (D5 = pause) and with original kempston ... = log.1 then game pause is stable set. Fix ... A,(C) or replace joystick routine with this version:
... .
EI
HALT ;time after INT/begin of ... -
Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …
... br /> // Trap the KEY-LINE routine
PutWord(@Memory[$ ... 01;
// Patch the PAUSE command, so that now
routine.
PutWord(@Memory[$12E9], ... trap is in the core, HALT instruction.
... -
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…
... is looking to do a halt followed by a 60000 ... to the screen. Following a halt there are ~14000 cycles to ... because halt is used in the scroller. The print_word_wrapped routine has ... been changed to pause if any key ... -
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…
The routine to swap the colours has ... for a bit then pause with a HALT and do the colour ... -
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…
[quote="joefish;954708"]The routine to swap the colours has ... for a bit then pause with a HALT and do the colour ... -
LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding. I think that there might be more of these routines out there (where-ever-u-r). Isn…
... (if someone finds a faster routine please tell me..)
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... code.
The line routine that I have implemented is ... there have a fast line routine, plese email me.
infy pause is a good thing or is undesirable ?I recently had a discussion with Andrew Barker that brings me into confusion. If I understand correctly, adding an infinite pause between level bloc…
... understand correctly, adding an infinite pause between level blocks is not ...How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…
... returning from a m/c routine which sets all the registers ... when calling a m/c routine from BASIC, and reload them ...Game loop design?Having some thoughts on how to design the game loop and could do with some hints and tips from folks who have done it before! It's all about how to …
... ,RET interrupt function, so that HALT can be used to time ... /> jr z,nosprdraw
halt ;Wait for interrupt
call ... a whole character, the movement routine draws the edges so the ...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 …
... waits till the next interrupt (HALT) so that it is in ... /> LD (OKTOFLIP),A
HALT
JP MAIN ... /> RETI
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …
... /> LD (YOFFSET),A
; halt
LD A,1 ...
; **** 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…
... trying to make sprite movement routine. Actually I did it, however ... with screen refeshing, interrupts and HALT command, but I still dont ... much about it .
My routine is as follows
1 ...ANNOUNCE: Manic Miner: Neighbours - Allana TrumanHappy 26th birthday Allana! Today I release my new game, [I]Manic Miner: Neighbours - Allana Truman[/I] (MM:N-AT), a tribute to my favourite charact…
... are left, right, jump... and pause!
[ [url="http://www.geocities ... the end-of-game swordfish-routine so that the player no ...Competition: Sadistick routine on Spectrum ROMMy vote goes to BEEPER at #03B5 Let's ear you pick! :) And a great BOHHHHHHHHHHHHH to Dr Ian Logan & Dr Frank O'Hara for their description about the…
... about the parameters for that routine !!!! The words "and HL holds ...Assistance with IM2 routineI subsequently got a working IM2 routine.
I subsequently got a working IM2 routine.Homing missile routine - help neededI am attempting to write a routine which will allow a missile to home in on a player. Basically the sort of thing you see in most shoot-em-up games. …
... am attempting to write a routine which will allow a missile ...need a routine to fill the screen with 'stars'I need a routine that will randomly set pixels to give the illusion of a star filled back ground. Once drawn, the stars don't need to move. Not wanti…
I need a routine that will randomly set pixels ... if anyone had such a routine in their code collection. I ...TZX format questionProbably a daft one, but I like to be sure of these things! For a block type 10 (a standard speed data block), the text states that all values in s…
... in square brackets is the "Pause after this block" value, which ... , this pause could be any value, and still be "ROM-routine-compilant ... my implementation allows a variable "Pause after this block" for the ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
...
lp1:
halt ; Wait for screen refresh every ... Direction
; 4 X Direction Pause Counter
; 5 X ... Point
; 6 Y Direction Pause Counter
; 7 Y ...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…
... USR init
20 PAUSE 1: RANDOMIZE USR play: ... having an interrupt service routine which calls the player ... add a hook to my routine to the BASIC ISR. ... would create a small routine which would just call the ... have no problem creating the routine, I just don't ...Pause after blocksI've added a simple CRC routine to my app (thanks Gilby) to check for dupe TZX files and it was magical as I've located about two hundred of them tha…
... 've added a simple CRC routine to my app (thanks Gilby ...My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
... just copied the screen rendering routine from the one all you ... look to my fade out routine and tell me how it ... />
NextPass:
halt
halt
halt
halt ;just a delay (1 ...
