-
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... /> ; B = elt count
; C = root node
heapify_words:
ld b, c
ld c, a
dec c
call ... b, c ; b = size - 1
.extractnext
ld d, 0
push bc
ld c, 0
call heapify_words
pop ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... br /> call tryparseint16
jr c, .returnstr
pop af ; ... pop hl
ld (hl), 0
jr .dostringret
... />
tryparseint16:
ld c, 0 ; 0 for positive number, 1 for ... /> .nextchar
cp '0'
ret c ; it's not a ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... escape codes, nicked from C, so you can put ... char support as well) like \0, \n, \b, \r, ... tokens
tokenize:
ld c, 0 ; count of tokens
... /> ret z
inc c
; if the next ... ret z
ld (hl), 0
inc hl
jr ... -
Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... 4
LD C,A ;C HOLDS THE DISPLACEMENT 0-3
LD ... BLOCK
CLIPDISP LD C,0 ;Displacment for clipping tile
LD B,(IX+0)
LD C,(IX+16)
LD ... -
Switch to 48mode without 'SPECTRUM' commandIs there a poke(s) to switch to 48 mode without SPECTRUM command. I want my tape loaders to switch automatically. I know how to switch ram banks ok…
... /> LD A,20 ;(BANK4)
OUT (C),A
CALL 23760 ;COPIES ... -
Amazing Short Type-InsHey all ! Been having some pretty stressfull days lately so I tought I would type in some games. There was a very nice type-in book here in Slovenia…
... ,189
20 FOR f=0 TO 7: READ t: POKE ... ": BORDER 2: PAPER 7: LET c=0: CLS
40 LET x ... $ f: PRINT BRIGHT 1; INK 0;AT 10,f;"\a": NEXT ... -
MIC - socketQuestion : is the mic-socket buffered? Or: When I make an OUT to port 254 is the signal still there after the command or only during the OUT? w…
... />
When I make an OUT to port 254 is the ... command or only during the OUT?
what i mean ... I reset the OUT 254,1 with a OUT 254,0?
Paging MemoryAny idea why this short piece of code doesnt work, just crashes. I am just messing with paging memory in and out (not achived this yet) and reading t…
... with paging memory in and out (not achived this yet) and ... /> ED 78 IN A, (C)
ED 79 OUT (C), A
06 ... 00 LD B, N
4F LD C ...SPIN's breakpoints - an overviewAs quite a few people have been asking how to set breakpoints on memory write etc. in SPIN, here's a description of the way the breakpoints work. Get…
... />
One thing to watch out for, regarding port I/O ... that for such instructions as "OUT (c), a", the port number is ... C - but the value in B ...AY-player from Rastan SagaHello. For what ports #3F, #5F in the given fragment of a code are used? They give What effect in sounding? ================================= F4C1 21…
... ][/B]
F4D0 ED51 [B] out (c),d[/B]
F4D2 0EFD ... [/B]
F4D4 ED51 [B]out (c),d[/B]
F4D6 06BF ... ][/B]
F4DC ED79 [B]out (c),a[/B]
F4DE 15 ...splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... deal, I can do the out 254,0 myself), sp_AddMemory, sp_CreateSpr, sp_AddColSpr ...Alternative ROM on original DivIDEOriginal DivIDE interface contain too allram mode (16kB paging). [url]http://raww.org/index.php?name=News&file=article&sid=2471[/url] Switch to ALLR…
... enable
OUT 227,0 = set page 0 with write protect ...
OUT 227,65 = ... LD A,66
OUT (227),A ;enable allram ... A,64
OUT (227),A ;page 0 + write enable
LD A,0
OUT (227),A ;page 0 + write protect ...Fancy a challenge ????I played one of my MINIGAMES from the 2008 competition and got a very hard game. It took me several days to find the solution. So if you want to gi…
... 3-D
1-C
0-D
2-8
0-8
0-9
0-3
0-6
8-6
0-C
0-3
2-3< ... 0-8
0-2
0-9
A-0
8-0
5-C
6-C
1-C
4-C
0-D
5-D
6-D
0 ...128 ROM paging alternativeWould this work (with the appropriate code in each ROM)? [code] ; 128 rom paging routine ; use rst 28h with call address stored after restart ;;rom…
... ; disable interrupts for page
out (c),a ; and page
out (c),a ; and page
Keyboard Input$/scan problemHi, I'm finally fulfilling my promise to get a reasonable understanding of the Speccy and embarking upon attempting a few simple routines in Assembl…
... A,(C)
AND 7
LD D,A
OUT (254 ... /> DEC D
LD C,254
OUT (C),D
JR,LOOP ... recognise the instruction 'IN A,(C)' or 'OUT (C),D' :-? ...... so I decided ... lines?).
Can anyone out there spend some time and ...Tips on optimizing some newbie assembly routinesI'm starting to learn some assembly language. The best way to learn is to actually code something you are going to use, so I'm creating a very simple…
... 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0Getting DivIDE Plus to always start with ResiDOSI am hoping someone on here will have experience of using ResiDOS - I emailed Garry Lancaster, but have not received a response as yet. A customer h…
... 128K Mode
50 OUT 32765,0
60 PRINT ... USR 0
- Presumably line 40 ...Help pleeease "Proving Emulator OpCode flags are correct"So I had a cunning plan... I wanted to write a test harness for Emulators that could "prove" that all opcode flags were correct. I wanted something m…
... 33,0,112,221,33,0,128,6,0,14,0,22,0,197 ... ,241,138,245,209,114,221,115,0 ...
160 FOR D=0 TO 255
170 ...
LD B,0 //aAddr
LD C,0 //fAddr
LD ... D,0 //dAddr
...Happy Birthday Marko!Marko Birthday! Please note the Spin assembler does not recognise the out (c),h command. Please could you fix it before you celebrate. :-D Arf.
Marko Birthday!
Please note the Spin assembler does not recognise the out (c),h command. Please could you fix it before you celebrate.
:-D Arf.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. …
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...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…
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...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…
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...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…
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …
... /> [CODE]10 PAPER 7: INK 0: CLS
20 LET L ... =10: LET C=15
30 LET I ...
40 PRINT AT L,C;"*"
50 LET A$=INKEY ... PRINT AT L,C;" "
70 IF A$>="0" AND A$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…
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...next pixelI searched the "Discussions" groups for the phrase "next pixel" and got no matches - and removing the quotes it discards the "next" and just searches…
... (in E, col.0 in the example) ... de,$4000
ld bc,0
pixrow ... c ;C = line
bit 3,c
jr z,set_hl
ld c,0 ... /> rrc c
rrc c
rrc c
...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…
... /> #define printInk(k) printf("\x10%c", '0'+k)
#define printPaper(k ... ) printf("\x11%c", '0'+k)
#define printAt(row ... ) printf("\x16%c%c", ' '+row, ' '+col)
#define INSIDE_COLOR 0
# ...
