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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…
... middle of "erase" (routine BIFROST_fillTileAttrH) or "draw" (routine BIFROST_drawTileH) there will be ... char lastK(23560); // last pressed key
unsigned char ... way to implement collision detection. Routine "collision" calculates the tile map ... -
redirecting Z80 sub-routine CALLsI'm working on changing a TR-DOS disk program to work from standard +128k tape and thought that rather than painstakingly working through the code ma…
... could install some automatic redirection routine so that whenever the PC ... it would jump to my routine instead. This would be just ... -
40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... a 40 column printing routine, which I'd like ... 40 Column Font & Routine."
defb 22,5, ... /> call rst16replacement ; basically the routine replaces rst16
inc hl ... OVER flag - if 0 the routine clears space for the printed ... -
Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …
I'm looking for a routine that scrolls a small section ... />
I seen a similar routine in 'Input' magazine many years ... -
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
Hallo,
In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler
[code]
sub light(x as uinteger,y as uinteger,intensity as ubyte)
dim adr as Uinteger
if x -
A 128 Routine to Put Tokens in StringsI was writing a DEF FN on the +128k and decided that I'd had enough of not being able to put function tokens in strings without a great palaver and s…
... I wrote this little BASIC routine to do it for me ... -
checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…
This routine starts off with HL=$ffff ... to A and calls this routine, ending up with another value ... -
Rubber key spectrum (spares/repair)Hi all, First time poster, long time listener :smile: I'm after a rubber key spectrum in decent condition. Non working preferred, although it would…
... /> I'm after a rubber key spectrum in decent condition. Non ... -
Checksum routine wantedI wish to make a program that verify integrity of a Multiface 1 ROM. It is possible to compare each byte of the ROM against a binary dump, but this i…
... />
Thus, I need a routine that calculates a unique value ... -
How to benchmark a single routine?I've written a routine. It works. But it was never meant to be the final version. So I rewrote it. The new routine works too. Yay. :) However, I'd …
I've written a routine. It works. But it was ... I rewrote it. The new routine works too. Yay. :)
Accidental rainbow effects.. How do I adapt?I've somehow bizzarrely created a rainbow text effect on my title screen by accident. The title was just supposed to flash different colours whilst …
... of the IN command the routine produces some attractive results...
key combinations) are pressed at the ... /> flash LD A, R ;flash routine
AND 67
INC ...Divide or 1bis.?Hi, I'm new to these forums, having just resurrected my old Spectrum + after 25 years in my parents loft, and also having spent far too much time pic…
... a +2 and a rubber-key 48k... Nostalgia can be addictive ... , yet!)
Essentially, the key thing I'm interested in ... and do some simple software/routine development. I have got back ...How do I detect if key 'H' is pressed in machine code?How do I detect that the key has been pressed? I have been using the IN 239 command for keys 6-0, but dont know how to detech 'H'...
How do I detect that the key has been pressed?
I have been using the IN 239 command for keys 6-0, but dont know how to detech 'H'...Looking for a 90's article on UK birds singing off-key.I remember reading an article in the early-to-mid 90's about birds in London (I believe it was) being affected by all the traffic noises and constant…
... mentioned the birds singing off-key because of their having to ...Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
... 'm trying to write a routine that plots 3 pixels to ... /> call $22E5 ;call ROM plot routine
pop bc
inc ...Sampling routineLooking for a simple yet crude sampling routine that I can use on a forthcoming game. I've tried most of the ones from the archive and find them uns…
... a simple yet crude sampling routine that I can use on ... spare and just need a routine that goes "YEAH!"
20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…
... so on.
The key insight is this: while all ... attempt at a 20-column routine last night - churning through the ...Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... 's 32-bit long multiplication routine so much that I decided ... version, which follows the original routine quite closely (AA's comments ... #mozTocId269826
991 REM MULTIPLY ROUTINE 32*32BIT=64BIT
992 ... ,X,S,W,G,K (KEY TO THE LEFT)
996 ...BIFROST* example: "Knights & Demons DX" source codeA package containing the source files of our multicolor game "Knights & Demons DX" is now available for download [URL="http://www.mediafire.com/?hbch…
... GO SUB 600 ' wait for key, then disable BIFROST*
GO ... GO SUB 600 ' wait for key, then disable BIFROST* again
routine called to pause at ...Routine for Currah speechI'm currently writing a routine for the Currah that will provide speech during a game. A timer is set to initiate the speech every 50 cycles of the …
I'm currently writing a routine for the Currah that will ...Replacing a play key on a grey+2Just had a grey in with a busted play key, haven't got one spare but I do have a few fast forwards that will do for the moment but bugger me is it a …
... in with a busted play key, haven't got one spare ...Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... in STOP hit the enter key and you are out of ... impacting the reset of the routine... enough of the postulating...
[/code]
ok the routine...
[code]
1600 ... adding extra opps to the routine.)
It should return ...How to replace the 'Play' key on a +2?Just found another system I'd forgot about stashed in my attic - a black 128k +2 with the large black PSU. I've noticed that the Play key is missing…
... 've noticed that the Play key is missing, so you need ...JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …
... , you can press the [T] key, and a menu will appear ... additions.
Original teleport routine is copyright Your Spectrum issue ... (47416 bytes) and the keypad routine as per JSW1 albeit this ...Asm routine for AY playback?Hi, is possible to create and "name" an asm routine for playing some ay data? If yes, how? Example: Ok , I've finished a sound tracker song, now I n…
... create and "name" an asm routine for playing some ay data ... with or without the play routine? How does it work?
Is possible to call the routine and make it play some ...MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …
... .
The routine gets its instructions from three ... to a collision handler routine or key handler routine is required, or ... ; else line*256 for exception routine
; attrib = $FF ... GOSUB = line*256 for exception routine
;key = $FF to finish
What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... I could use the ROM routine (It would suffice, any pointers ... I'm asking for a routine :)
No need for ...z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... at address 0xd4d4 (interrupt service routine entry)
wpoke(0xd4d5, ... { /* Use OZ to get the key */
case 'a':
...
; pointers to interrupt routine.
defb 200,200 ..."Press any key" detectionWhat would be the simplest way to detect if *any* key is being pressed? No LAST_K trickery, I can't rely on that. It has to be reading the keyboard p…
... way to detect if *any* key is being pressed? No LAST_K ...
