-
Fuller AY only gamesThe definitive list: 1) Demonstration Tape 2) Bodysnatchas 3) Star Bike
... /> ld de,$5c00
ld bc,801
ldir ;restore fuller ... a,b
push bc
ld bc,$fffd
out (c ... )
out (c),a
pop bc
ret[/CODE]
Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... video memory into its own screen buffer and generates a SCART-compatible ... a second or even third screen. As a minimum it should ... be able to place its screen address at least on any ... />
Being able to double-buffer the display (like [I]SPECTRA ...Sorting BusinessThis is a little bit different from the usual game-related fare but I know there are a few people here who like this sort of thing. This is about so…
... rand() % (j-i)
pop de ; de = size
... k % size
pop hl ; hl = k
... size
pop bc ; bc = size
pop de ; de = i< ...Sorting BusinessThis is a little bit different from the usual game-related fare but I know there are a few people here who like this sort of thing. This is about so…
... are small
pop hl
pop de
insertion_sort ... (j, j-1, size)
pop bc
ld e,l ...
pop hl ; hl = i
add hl,bc
ex ...displaying all memory activity in a screenDunno why I keep thinking about this, but here goes Is it easy enough to add a screen to an emulator that shows every memory address' activity.... …
... games where the off-screen buffer is for screen data. Starion is of ...Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
... it
call DOTTED
pop hl
exx
... A
EXX
POP BC
PUSH BC
JR L_24DF
EXX
POP BC
L_24DF: LD HL, ($5C7D ...Buffer to screen - how much?[FONT=Calibri][SIZE=3]I am starting to build a new game and am researching different ways to accomplish what I need to do. My question is, is it poss…
... is the stack PUSHing the buffer to screen behind the scan line ... can switch between the corresponding screen & buffer addresses just by toggling ... I say!) [/I]your buffer to screen and just not HALT in ...Buffer to screen - how much?[FONT=Calibri][SIZE=3]I am starting to build a new game and am researching different ways to accomplish what I need to do. My question is, is it poss…
... [/url]
Uses a screen buffer in linear format, not the ... same way the screen memory is stored. I find ...llvm-z80 statusFew months ago I read about efforts to produce llvm back-end for the Z80 (even perhaps as part of new z88dk). Any update on that? I found [URL="htt…
...
push de
push bc
ld ix, 0
pop bc
pop de
pop ix
ret
Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…
... 23645),bc ;restore CH_ADD
ld bc,41
add hl,bc ; ... )
push hl
pop ix
ld de,32 ... /> djnz LoopB
pop ix
pop bc
add ix,de ...Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…
... push de
ld bc,(23688) ;BC=S_POSN
dec b ...
ld (23688),bc ;the print position one ... amp; DF_CC
pop de
pop bc
djnz loop
ld bc,datz-dat2-1
...Bug fixing woesGaahhhh! I've spent an afternoon off work agonizing over why my routine didn't work. It's something I'd already restarted so didn't want to wipe th…
... b,a
cslp push bc
call cspr
ld ...
add ix,de
pop bc
djnz cslp
ret ...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... (C),D
LD BC,49149
INC HL
outAYloop PUSH BC
outAY LD BC,65533
...
INC D
POP BC
DJNZ outAYloop
...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... />
[CODE]
push bc
push de
push ... ...
pop af
pop ix
pop hl
pop de
pop bc[/CODE ...clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…
... B,C0H
_1 PUSH BC
PUSH HL
LD ... /> LDIR
POP HL
CALL _2
POP BC
DJNZ _1 ...Megatree DevelopmentHi All, I have been messing around with developing a concept for the unwritten game Megatree. Here is a video of what I have so far written on a 48…
... objects move all over the screen and in front of and ... the sprites print to the screen buffer before the large tree is ... sprites are printed to the buffer before the tree, it isn ... is copied to the visible screen.[NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…
... improvements include [B]split-screen and pop-up window[/B] support on ... [/B] display and bigger Spectrum screen display on Androids with super ... /> * Added assembler routines for scaling screen to 1280x960+ pixels.
* Fixed ...GFX viewer from TZX/SnapshotsHello All, I use Spin .7 to view memory of games so I could find the GFX, but it's very buggy, does anyone know of something similar?
... (tile size, does it use screen buffer etc.) it is the first ...Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…
... ).
- But as my screen printing, drawing routines and all ... involved just copying the game screen buffer around and watching how ... the new sprite routines and screen handling routines were written ... bug on the controls option screen
Pressing 9 ...Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
... /> pop bc
add hl, bc
ld bc, 41
add hl, bc
pop bc
add hl, bc
ld bc, 197
add hl, bc
pop bc
pop hl
pop af
ret ...Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
... /> pop bc
add hl, bc
ld bc, 41
add hl, bc
pop bc
add hl, bc
ld bc, 197
add hl, bc
pop bc
pop hl
pop af
ret ...Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …
... character codes to the back-screen in the CharAde engine I ... reading numbers back from the screen buffer, forgetting that the values are ...Tau Day<br>By popular demand (well, demand of one, which is highly popular in the sorts of things I do :D ), here is a small celebration of tau day, June 28…
... effect
push bc ; push x
push de ... am48_sqrt
pop hl
pop de
pop bc
... ; restore original AC
pop de
pop bc
jp ...Could ELITE's wireframe graphics be improvedWas watching this video last night comparing the BBC and Spectrum version of Elite: https://www.youtube.com/watch?v=Ov4OAteeGWs It seems that the…
... for the bbc 1-bit screen mode, apparently it was so ... setup a 1-bit linear screen buffer, converted the algorithms directly from ... copied it to the Speccy screen.
Not sure if ... drawing routines for the Speccy screen layout or not. I've ...
