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z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... of PRINT AT x,y; where x refers to the ... is "PRINT AT x, y; where x is vertical and ... simply as "PRINT AT y, x".
x coordinate.[/code]
... all, "defb" is an assembly time instruction, not a run ... -
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…
... - y pixel ;
; c - x pixel ;
; de - address of ... br /> and 0x0F ; mask off where we want ... -
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... font
StringBuild:
sta ,x
inx
inc
lda #0
sta ,x
start:
PRINT(string ... does not print at pixel X,Y but
;* prints at ... -
Drawing some spritesI figured I want to draw some sprites. My target was to do a 16x16 masked sprite. There's no clearing here, just drawing the sprites. My first ite…
... )
add hl, bc ; add x offset
ex de,hl ... hl ; grab sprite data & mask
ld a, (de) ; load ...
and l ; and the mask
or h ; or the ... -
Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
... to keep in mind: inlined assembly is dangerous under sdcc. sdcc ... />
[code]
#define LO(x) ((x)&0xFF)
__sfr ... -
Cap'n Rescue One Version 3.0Hi, just wanted to let everyone know that I've updated my ZX Spectrum platformer Cap'n Rescue to bring it in line with the graphical style of the…
... having a crack at z80 assembly. Don't let anyone put ... less "I didn't do 'x' in the game because AGD ... -
Cap'n Rescue One Version 3.0Hi, just wanted to let everyone know that I've updated my ZX Spectrum platformer Cap'n Rescue to bring it in line with the graphical style of the…
... having a crack at z80 assembly. Don't let anyone put ... less "I didn't do 'x' in the game because AGD ... -
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... , DDR. 200MHz DDR SDRAM, 8M x 16 bits, to be precise ... critical portions written in ARM assembly. In the MSDOS days, emulators ... -
ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
The ZX81 PLOT & UNPLOT commands just select ... "pixel" is actually a 4 x 4 pixel block. This in ... -
ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... working on a ZX81 using PLOT I guess it would just ... if it equaled 1 to PLOT a point, otherwise move to ... addressable graphics available from BASIC, PLOT and UNPLOT just use block ... have to use machine code/assembly language if you want proportional ... -
ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... months ago I found an Assembly program from an early Your ... the information GReW about the PLOT/UNPLOT, still I'm a ... -
Knight Lore disassemblyHi, Not quite sure if this belongs here or in "Games" but figured it's more likely that developers would be interested. I've just released the …
... splitted for pixel data and mask data (rendering is faster on ... (mostly background trees and walls) - mask is removed for these (saves ... your plan for converting Z80 assembly to 6809? (I understood you ... -
Calling machine codeOccasionally I see on ZX computers (mostly the spectrum, but I think also the '80 and '81), how someone made their machine code and wrote the bytes i…
Knight Lore disassemblyHi, Not quite sure if this belongs here or in "Games" but figured it's more likely that developers would be interested. I've just released the …
... splitted for pixel data and mask data (rendering is faster on ... (mostly background trees and walls) - mask is removed for these (saves ... your plan for converting Z80 assembly to 6809? (I understood you ...I don't think I'm getting the $22AA Pixel-Add rom routineDear all, I'm misunderstanding how the PIXEL-ADD rom routine works. My code... [code]ld b,175 ld c,1 call $22AA ld (hl),a ret[/code] So…
... />
The Accumulator holds the x pixel position within the character ... />
For a more useful plot routine, you'd combine your ...z88dk v1.99A Release Candidate[b]Z88DK VERSION 1.99A RELEASE CANDIDATE[/b] Download from: http://nightly.z88dk.org/Releases/ The release candidate will be available for te…
... sdcc version works on OS X as well.
[/quote]
Inlined assembly can be dangerous with sdcc ...star wars filmsok we've just had the force awakens (which i still havent watched yet lol) and now the next one (theyre doing one every single year apparently :( …
... the latest movies have threads/plot lines from previous movies and ... core threads that are working - X-Men and The Avengers
X-Men thread now as the ... has one foot in the X-Men story arc as he ... he isn't actually an X-Man. (That's an ...Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... coordinates in c(). (The PLOT in line 40 is just ... 1
40 IF POINT (x,y) THEN
LET ... pc,1)=x: LET c(pc,2)=y:
PLOT x,y< ... br /> 50 NEXT x: NEXT y: OVER ... LET y=c(i,2): PLOT x,y
90 LET c ...Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... gets rearranged in reverse PLOT sequence each time.
x,y, width, height
sbc hl,de ;HL=x,y coords # (=INK pixels ... call $22e5 ;PLOT_SUB PLOT B,C=y,x
pop ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... /> ld a,(hl) ; a = spr mask rotated right
inc h ...
or (hl) ; or in mask rotated from left
ld ... background graphic
and b ; mask it
or c ; or ...Your latest gaming purchase.Okay, so we've got an, "I am currently playing......" thread, but what I wanna know is what you've just gone and bought y'self. If you're like me, y…
... bud from work Majora's Mask just cart and instructions, and ... her 235 holiday this year X( ), and it looks absolutely amazing ...Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... /> static void __CALLEE__ spec_plot(short x, short y)
{
x, and remove x from stack (necessary for ... /> LD D,C ; Move X to the proper register
; D = X and E = Y
PLOT:
ld a ...Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... char mask;
address = zx_pxy2saddr(x,y,&mask);
*address |= mask;
x);
if (x x)
{
e += 1 - 2*x;
x--;
Jetpac - Fuel to BurnNot quite a Spectrum game, but based on the Spectrum game. Basically a fairly faithful recreation of Jetpac, written in JavaScript, with a "classic v…
... the frames only update after X pixels of movement (my Sprite ... behind the TV scan-line mask, anyway. Native resolution is 1080P ...TommyGun with Debugginghttp://goo.gl/HfSXev?gdriveurl Ok, so this is a pretty big release for me and I have added a lot of stuff into the code editor. Mainly of course …
... syntax highlighting sucks for Z80 assembly. It gets confused when rendering ... "ret c" and "ld c,x". It can't render the ...Is there a Beehive Bedlam type game for the Spectrum?I cant think of any, would it be hard to do?
... being that straight forward in assembly. There are bound to be ... trigonometry calculations. A table of x/y displacements for the initial ... change the sign of the x displacement when the ball collides ...Running out of fingers in AssemblyDear all, Still trying to learn Assembly and have put a few routines together. However, as my routines become a little more involved I find myself…
... itself, twice, and then adding X. Not thinking about this, you ... /> [/code]
But storing 4*X isn't needed: once calculated ... add X immediately and you have 5*X. Likewise, storing 5*X isn ... (defined in beginning of the assembly source, or read from memory ...
