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Search Again :: Adv Search 1000 results in 0.020s
<1…17181920212223…34>
  • AMX mouse emulationI'm trying to add AMX mouse emulation to Spud but not getting very far. I can get a reaction to button presses but nothing to moving the mouse. …

    ... hl,80c2h
    830b e601 and 01h ; move up or down ... ?
    830d 2003 jr nz,8312h
    830f 34 inc (hl ... a button is really down by ensuring that 10 ... the button as actually
    down.
    [/code]

    ...
    Jon Needle Jon Needle May 2014 Emulators
  • AMX mouse emulationI'm trying to add AMX mouse emulation to Spud but not getting very far. I can get a reaction to button presses but nothing to moving the mouse. …

    ... hl,80c2h
    830b e601 and 01h ; move up or down ... ?
    830d 2003 jr nz,8312h
    830f 34 inc (hl ... a button is really down by ensuring that 10 ... the button as actually
    down.
    [/code]Jon.[/QUOTE]< ...
    rich_chandler rich_chandler May 2014 Emulators
  • FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…

    ... ld hl,#0x0000
    add hl,sp
    inc hl
    inc hl ; hl points ... fuse hack, fuse waiting for down signal
    ld a,#0xfe ... pop af
    pop hl
    push hl
    push af< ... ; write to buffer
    inc hl ; increase buff. counter
    ...
    tstih tstih July 2014 Development
  • Change PAPER and BORDER colours from machine codeHow do you go about changing PAPER and BORDER colours from machine code? I've forgotten the system variables for border and paper.

    ... of INC HL) .

    Within a character, to move down a ... instead of INC HL).

    To move down a whole character ...
    joefish joefish July 2014 Development
  • Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…

    ... x coordinate
    ;
    ; exit : hl = screen address corresponding to the ... square
    ;
    ; uses : af, hl

    ld a,h ... pixel left, right, up and down. I might take a look ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Development
  • Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…

    ... /temp/palstuff/]this site (scroll down to AEC Line Glitch)[/url ... character X coordinate
    ;OUTPUT: HL = address of character in screen ...
    mcleod_ideafix mcleod_ideafix September 2014 Development
  • Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…

    ...

    rr (hl)
    inc hl
    rr (hl)

    works ... as inc hl does not ... , or move things up and down by an arbitrary number of ... INC L instead of INC HL, adding in an RRA would ...
    joefish joefish September 2014 Development
  • 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…

    ... and some optimizations such as HL passed arguments in z88dk. So ... . So the sccz80 version walks down the stack when collecting the ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Development
  • 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…

    ... ;the print position one row DOWN
    call $0DD9 ;CL_SET, synchronise ... the first character ..
    ld hl,dat2+1
    ld de ...
    Battle Bunny Battle Bunny September 2014 Development
  • Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …

    ... 1 and write 0 with down addressing order;
    ; ... Step4: read 0 with down addressing order.
    ;
    ... write 0 with down addressing order
    ld hl, start
    ... read 0 with down addressing order
    ld hl, start
    ...
    balford balford September 2014 Hardware
  • Creating a linked list in Z80[FONT=Calibri][SIZE=3]I am using a circular buffer to store tiles to be displayed on the screen. Tiles only appear for a set period of time, so when …

    ... linked list. Has anyone gone down this route in Z80 or ... /> defm /Hello/
    ...
    ld hl,list_1
    call [URL="http ... to empty
    ...
    ld hl,list_1 ;; the list we are ...
    Alcoholics Anonymous Alcoholics Anonymous October 2014 Development
  • 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…

    ... pulsenoise to go up and down automatically and go
    ; faster ... BC,49149
    INC HL
    LD D,(HL)
    OUT (C ... ),D
    INC HL
    DEC A
    JR ...
    MatGubbins MatGubbins October 2014 Development
  • 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…

    ... at line 468, from "POP HL" down to the Typeset label.) I ...
    Battle Bunny Battle Bunny October 2014 Sinclair Basic
  • Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…

    ... ,DEE
    07: RRC (HL)
    08: RLC (HL)
    09: XOR ... R
    11: INC (HL)
    12: DEC (HL)
    13: NEG ... -DN INV
    18: XOR (DOWN)[/B]
    19: ADC A ... keys to move UP and DOWN through the list of units ...
    jp jp November 2014 Announcements
  • SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…

    [QUOTE]I thought this was a standard technique,[/QUOTE]

    I have never seen this exact technique in any game and I have peeked into a code of a few.

    But actually I've seen something similar in Green Beret.
    The sprites don't ...
    Ralf Ralf November 2014 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ...
    Start
    LD HL,40000 ;create test buffer
    LD (HL),D
    INC HL
    DEC BC ... drawing
    DI
    LD HL,16384
    LD (StoreSP),SP ... 4 bytes
    LD (HL),A
    INC H< ... Especially with going one line down, it became a bit ...
    Ralf Ralf December 2014 Development
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... draw but move the snowball down. That way the snow will ... code for LD (HL),0 to ld a,(hl), XOR star, then ...
    R-Tape R-Tape December 2014 Development
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... ;the flutter needs slowing down or it looks crap< ... br /> ld l,a ; HL = address of screen.
    ld hl,map
    add hl,de ;hl now pointing ... br /> pop hl
    inc hl
    inc hl
    ... ld (hl),87
    add hl,de
    ld (hl),87< ...
    R-Tape R-Tape December 2014 Development
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... ;the flutter needs slowing down or it looks crap< ... br /> ld l,a ; HL = address of screen.
    ld hl,map
    add hl,de ;hl now pointing ... br /> pop hl
    inc hl
    inc hl
    ... ld (hl),87
    add hl,de
    ld (hl),87< ...
    R-Tape R-Tape December 2014 Development
  • assembler for PcHi guys, I'm in the process of teaching myself machine code, and wondered if there is a good pc program for writing code. Or is the best thing to use…

    ... [url]http://pasmo.speccy.org/#down[/url] you need the Windows ... /> MAIN: ORG 32000
    LD HL,$0000
    LD DE,$5800 ... file using Windows Explorer. Hold down shift and right-click on ...
    GReW GReW December 2014 Development
  • Edge Grinder, how would YOU do it?I always meant to post about this and AndyC reminded me in the 'vs' thread in games. [QUOTE=AndyC;808887]The thing I love about threads like this is…

    ...
    PUSH HL
    EXX ; upside down position
    LD HL,22528+256 ... to upside down print
    LD (HL),255
    DEC HL
    EXX ...
    MatGubbins MatGubbins December 2014 Development
  • New Game(s): Sir Ababol 2 and Sir Ababol DXHere is our own Christmas Present from Mojonia! We weren't going to release these games (at least, by the moment) but we decided just yesterday to fi…

    ... with your LD A,(HL) AND (HL) routines already there ... keystrings ;UP, DOWN, etc text
    ld hl,keyports ;where ... /> call print_string ;print UP/DOWN etc
    inc ix ... 'UP',0
    db 'DOWN',0
    db 'LEFT', ... HL,key1, LD A,(HL), IN A,(254), INC HL, AND (HL ...
    R-Tape R-Tape January 2015 Brand new software
  • Simple text scroller, first character problemin a text scroller, whole line scrolled to the left by 1 pixels using RL(HL) ; DEC L method. But at the rightmost character must be printed immediate…

    ... loop:
    push hl

    ex de,hl ; hl now points to ... buffer
    rl (hl)
    inc hl ; ... line
    ex de,hl ; hl now points to screen ... />
    pop hl
    inc h ; down one line
    djnz ...
    gasman gasman January 2015 Development
  • Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…

    ... ,A
    ADD HL,HL
    ADD HL,HL
    ADD HL,HL
    LD BC ... HL,22528 ; address to place attrs - add 32 for next line down ...
    MatGubbins MatGubbins February 2015 Development
  • CMWC random number generator for Z80Seeing the interest regarding the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=23070"]Xor-Shift random number generator for Z80[/URL]…

    ... post it, the forums went down. So here it goes now ... ld bc,0
    add hl,bc

    ld a ... ),a

    ld c,(hl) ; y = q[i]
    ex ... is:

    rnd ld hl,table

    ld a ...
    Patrik Rak Patrik Rak May 2015 Development
  • Double height text...<p>Is here any good routines for printing a font double height?</p><p>I've concocted this ridiculous routine but I'm sure it can be done much better.…

    ... br />  dec e  ;move down two rows
      ...  add hl,hl ;x2
     add hl,hl ;x4
     add hl,hl ;x8< ...
     add hl,bc ;HL now pointing at graphic ... />  call nextlinedn
     inc hl
     djnz ptclp
    ... nextlinedn:  ;moves DE one line down on the screen
    ...
    R-Tape R-Tape June 2015 Development
  • Who wants to play with my Willy?While cleaning up my PC a few weeks ago, I stumbled across an old Jet Set Willy mod I started back in the early 2000s. Although I don't quite have th…

    ... game to the latest HL by loading it into ... Prison Break" down to "Watering Hole" stepping down from the right ... Break".
    - When stepping down into the hole in "Going ... Down..." if you step into ... br /> - When jumping down from the ramp into the ...
    jetsetdanny jetsetdanny June 2015 Games
<1…17181920212223…34>

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