-
Auto generated spritesLooking around for some graphics I came across [url]http://blog.disktree.net/?p=19[/url] , one of several such pages. Need the odd 8x8 UDG or two (…
... LD H,0
LD L,C
LD (RND+1),HL ... br /> XOR C
LD D,A
LD A,E ; Plonk ... 1)
xor e
ld e,a
ld a,d ; w = ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... hl,sp
ld e,(hl)
inc ... h,d
ld l,e ;HL=first byte to ... a
sbc hl,de
ld b,h
ld c,l ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... EXX
LD A,(IX+3)
ADD A,C
LD ( ... JR L61693
L61698: LD A,C
OR B
... E
SRL E
SRL E
ADD A,E
LD L,A
LD A ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... 00 00 $0ats
ld c, $00 ; f07d 0e 00 ... $07ts
rl c ; f07f cb 11 $08ts ... 7e 03 $13ts
add a, c ; f0dd 81 $04ts
l_f102: ld a, c ; f102 79 $04ts
... a, e ; f128 83 $04ts
ld l, a ; f129 6f $04ts
ld a ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... EXX
LD A,(IX+3)
ADD A,C
LD ( ... JR L61693
L61698: LD A,C
OR B
... E
SRL E
SRL E
ADD A,E
LD L,A
LD A ... -
playing sound samples from Boriel's zxbasic-compilerfirst of all, sorry if it sounds confusing if i'm posting this thread here instead instead of at Discussions:SinclarBasic it's because this is more …
...
ld l,rate ; sample rate = 3 ... + 13*rate)
ld c,254 ; output port
...
07 ld a,(hl) ; a = next eight bits
04 ld b,l
13/8 djnz $ ... />
12 out (c),e
10 jp loop
Need help with tzxing once again :)You people helped me so much in this thread witch a custom loader: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36109[/url] Maybe we…
... : INPUT "Czy relokowa[C] wersj[E]"'"rozbudowan[A]?(t/n): ";k$< ... LEN=VAL "2880": LET a=SGN PI: IF k$"" ... "
135 INPUT "Przyj[A][C] RAMTOP r[O]wny: ";k ... rmtp=VAL "62814": IF a THEN LET rmtp=VAL "62487 ... /> 140*crmtp: INPUT "Relokowa[C] pod adres: ";k$: LET ...Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... than the one before
c) repeat step b) 7 times ... br /> add a,a
add a,a
add a,a
add a,a
... ld h,0
ld l,a ... /> face_loop1 call face_loop2
inc e
call face_loop2
pop ...Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... /> push hl
ld a,l ; a = x coord 0-255
; c = width in characters
; hl ... definition addr
ld e,(hl) ; e = current sprite graphic GGGGGGGG
How to use Spectaculator 7.01 for BASIC ?It does not work for me. Problems with the keyboard - in 48 and 128 Mode. Nor can I move downwards with the "Down-Arrow" from: 128 TAPE LOADER 128 BA…
... cursor modes: K=Kommand, C=Caps, L=Letter, E=Extended (=Caps+Symbol).
The character that results when a ... C = Q
Shift (none) + Cursor L = q
Shift (none) + Cursor E ...Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... ld d,h
ld e,l
add hl,hl
ld c,h
ret
... the 8 random bits in A, which the original does, ... call rnd ; 0..255 in A
and $0F
... 0 ; 0..9 in A
ld c,a
ret
...Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... />
LD A,L
ADD A,6
LD L,A
LD SP ...
ADD A,32
LD L,A
JR C, VOLFU;going to ... new screen segment, if e.g ...M/C mathsHow would I do the equivalent of LET A=B*7 in machine code?
... variables, or is this a general Z80 calculation?
...
It seems a shame to use the FP ... A):[code]ld c,a
add a,a
add a,a
add a,a
sub c ... [/code]
For values 0-8191, use a ... d,h
ld e,l
add hl,hl ...Using the ROMs PRINT routineI really am starting from scratch again it seems, but how do you utilize the ROM routine to print characters, I think you point te BC register to an …
... char square, (though this a bit lazy & cannot ... in string
inc e ;next column along, only ... if set...
ret c ;is the end of the ... merging
ld (de),a ;put on screen
... 0 ;arrive with a holding ascii
ld l,a
add ...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... #define macros (a la C; there's a powerful CPP like ... that calling "BIFROSTsetTile(r, c, 255)" produces the following ... experience from implementing an optimized C compiler decades ago (unfortunately ... /> ld a, (_c)
ld e, a ; instead of ld l, a
...A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... /> add a, (hl)
add a, 65283%256
ld l, a
... guess 65283 % 256 is like C module, so:
65283 % ...
POKE 65283 + r * 9 + c
In this case, you ... levels (there are other modules, e.g. the frontend) which ...Increasing the number of UDGs...Hi Folks, I know by default the Spectrum can have 21 UDGs (48K) and 19 (128K) and that the address of the bit patterns is pointed to by the UDG syst…
... inc a
inc a
jr c,DOCODE ... E - Out of DATA"
DOCODE: inc a ;A ... l,a ;L =A*2
sla a
sla a ;A =A*8
add a,l ;A =A*8 + A*2 = A ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... e. ignore)
LD A, D
AND C ; C = 192
CP C ; C ... br />
LD L, E
LD H, D ... BORDEREFFECT
OUT (254), A ; Border/Sound effect
...
LD A, E
DEC A
JP ... A
LD A, 05h
XOR E
LD E, A ...BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... 8 times.
*IN A,[#FE]
*ADD A,E
*RL D ... $07ts
inc l ; 8058 2c $04ts
ld a, c ; 8059 79 ... $04ts
ld a, e ; 8116 7b $04ts
add a, $20 ; 8117 ... c6 20 $07ts
ld e, a ; 8119 5f $04ts
jr ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... every constant makes period 65535. e.g. constant #8000 makes only ... /> ld d,a
ld a,l
xor 254
ld l,a
noxor: ld a, ... /> ld h,a
ld c,(hl)
ld a,c
and ...BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... /> repintar LD A,L
ADD A,A
ADD A,A
ADD A,A
AND ... /> RL E
IN A,($FE)
ADD A,$40
RL C
LD H,A
LD A,L
ADD A,$20
LD L,A
JP NC,otra_onda
LD A,H
Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
... /> ld c,a
add a,a
add a,a
add a,a
add a,c ; row ... /> ld l,a
ld h,_BIFROST_tilemap/256
ld (hl),e
Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
... /> #define sp1_CreateSpr(a,b,c,d,e) sp1_CreateSpr_callee(a,b,c,d,e)
[/code ... />
ld a,(bc)
ld l,a
inc bc
ld a,(bc)
ld a,l
ld (bc),a
...Awaken ( Elite-like )DeviantArt 8-bit contest reminded me some ZX days and one unfinished project. Some kind of RPG and Flight simulator [url]http://www.youtube.com/watc…
... -Now you can complete a mission
-Status ... :
S,X,K,L - move your spaceship
M,L - rotate
V ... 1-3 -launch a rocket
C -forget all targets ...
W -drop a container
E -drop a ...z88dk vs. sdccI've just read this article (in Spanish) [url]http://www.cpcmania.com/index2.asp?urldest=Docs/Programming/SDCC_vs_z88dk_Comparando_tama%F1o_y_velocid…
... and it is not a problem to push/pop reserved ... ones.
A random example:
... /> inc hl
ld c,(hl)
inc hl
ld e,l
inc de
... dec bc
ld (hl),a
jp _FAST_LDIR
_endasm ...z88dk vs. sdccI've just read this article (in Spanish) [url]http://www.cpcmania.com/index2.asp?urldest=Docs/Programming/SDCC_vs_z88dk_Comparando_tama%F1o_y_velocid…
... is used as a pointer to a file descriptor so ... on return would cause a crash. A quick fix for ... them (in effect a call to a push/call/pop ... c
ret z
push hl
ld e,l ... mention that sdcc supports a very critical feature: sections ...Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... , h
ld c, l
ld a, e
or d
rr c
rr b
ld e, a ; E must have ... the mantissa highest byte
ld a, l ; exponent in A ...
