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<1234567…34>
  • Help! Reverse engineering a Spectrum game[deleted]

    ... store routines
    07 - A fast clear screen routine using the stack if ...
    09 - A debug screen that displays the register values ... trim graphics that exit the screen or display window
    ... SIN/COS
    20 - A fast screen address lookup routine, that is ...
    ASM ASM October 2010 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... ]

    07 - A fast clear screen routine using the stack if ...

    09 - A debug screen that displays the register values ... trim graphics that exit the screen or display window
    ... br />
    20 - A fast screen address lookup routine, that is ...
    Ralf Ralf October 2010 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... 's not fast enough to draw directly to the screen every frame ... well) to do a fast clear screen (still not very fast), no need to ... it is fastest way to clear the screen apparently:

    [code ...
    Paradigm Shifter Paradigm Shifter June 2022 Development
  • Blowtorch method of Speccy repairsI just did my first Spectrum repair (and successful at that). It was the Issue 2 spectrum I wrote about a while ago, I just hadn't got around to doin…

    ... get the chips off *amazingly* fast with that - heat the board ... all - they came out so fast.

    Unfortunately, solder filled ... iron and solder sucker to clear all the holes (but I ... ... and I got a nice clear screen with the (C) 1982 Sinclair ...
    Winston Winston January 2007 Hardware
  • [Asm] Is this nested loop faster than LDIR or a bunch of unrolled LDI's?Hi all. I'm learning Z80 asm on Speccy 48K, and to start with I decided to write my own "CLS" routine (without relying on ROM calls or LDIR) as a lea…

    ... me most is efficient fast code, so after weeks ... more byte.

    ; Clear screen memory.
    ld a,%00000000 ... ; Move back to the previous screen address.
    djnz cls_screen_loop ... Avoid going back to basic. Screen is cleared now, continue ...
    ST1 ST1 November 2018 Development
  • Fastest emulator screen renderingHi, I'm developing an algorithm for fast emulator screen rendering and here is what I came up with. 1) Use 4bpp indexed image format as target …

    ... developing an algorithm for fast emulator screen rendering and here is ... algorithm.[code]byte=next screen byte // get next screen byte
    ... from 16384 for each screen line as[code]uint16_t ... screen for every line directly into bitmap) and it is really fast ...
    tstih tstih November 2019 Development
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... a ideal way to fast clear the complete screen, or fill it with ...
    LCD LCD October 2008 Development
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... a ideal way to fast clear the complete screen, or fill it with ...
    omega omega October 2008 Development
  • HD TellysWhat are the main things to look for in HD TVs? I know that LCDs are cheaper, but what's the main difference between LCD and Plasma (apart from Plas…

    ... better...basically how 'bright and clear' the picture is' 30000 is ... /> the ms is how fast the screen updates.....20ms or more you ... get 'smearing' on fast video..that ...
    beanz beanz April 2009 Chit chat
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... -DBLBAS1.

    [CODE]100 CLEAR 63998
    105 BORDER 1 ...
    Dr BEEP Dr BEEP August 2010 Sinclair Basic
  • Russian Pascal CompilerHello,<div><br></div><div>Unfortunately I started a discussion (as OutBush) on the Temporary Forum Board not knowing how long it would be until the W…

    ... of pascal program.ArrayClear(name_array) - fast clear of array


    screen thawVirtScreenClear - clear for virtual screen in memoryVirtScreenPut - put a ...
    Andrew771 Andrew771 June 2015 Sinclair Miscellaneous
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... :

    * deactivate NIRVANA
    * clear screen using same INK and PAPER ... follow these steps above, the screen will look "empty" while you ... /> [/quote]

    NIRVANA_printC is fast!
    colonel32 colonel32 November 2016 Development
  • ANNOUNCE: vbSpec - Bad News/Good NewsFor a number of largely dull and uninteresting reasons, I am no longer able to continue maintaining vbSpec, the open-source Spectrum emulator for Win…

    ... PC joystick support and a fast full-screen video mode. So I ...
    Chris Cowley Chris Cowley April 2003 Emulators
  • ok, now help me on this.righti-ho, i now have a tape player connect to my pc correctly and i have recorded games to it. now here comes the hard part. i connect the tape pl…

    ... press enter, i get a clear screen, great! then i press j ... my tape recorder. my tv screen shows red and white moving ...
    gohan1239 gohan1239 June 2004 Games
  • Machines and game starter bundles for saleI am just in the process of compiling a new stock list for the Preservation team shop and I am going to add a lot of my spare hardware kit and some o…

    ... keyboard, booted to a steady clear screen, and a game loaded and ...
    ADJB ADJB September 2008 Sales
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... ; 21) // if sprite went off screen, reverse direction
    dy = - ... br /> zx_border(2);

    //clear screen
    putchar(12);

    zx_border(2);

    //clear screen
    putchar(12);

    Digital Prawn Digital Prawn December 2010 Development
  • Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…

    ... A, $01 ;CLEAR SCREEN COMMAND
    OUT (1), A ;CLEAR SCREEN
    GOTO_START
    CLEAR SCREEN COMMAND
    OUT ($1), A ;CLEAR SCREEN
    LD B ... A, $01 ;CLEAR SCREEN COMMAND
    OUT (1), A ;CLEAR SCREEN
    LD B ...
    Robin Robin August 2011 Announcements
  • Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…

    ...
    call ROM_CLS ; do the clear screen
    ld hl,msg_define
    ld a,2 ; upper screen
    call CHAN_OPEN ; get the ...
    polomint polomint September 2011 Development
  • yeah x 0.0.2first: [URL="http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz"]the goods are at - http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz[/URL] aft…

    ... like balls) bouncing around the screen. nothing special, really. except that ... drivers,
    - basic console output (clear screen, 8x8 font print at and ...
    tstih tstih May 2012 Development
  • Gaming innovations that wern't popular...I've been thinking about innovations in gameing that were not popular when they were introduced, but have kind of become standard. Things like: No p…

    ... /> No player status's on screen as seen in [B]The ... bar, ammo counter etc. the screen was totally devoid of any ... player information, leaving just a clear screen. This was generally [I]not ...
    Bermondsey Bob Bermondsey Bob November 2012 Chit chat
  • 'Ocean Draw' instructionsHere are the instructions for the screen and sprite editor used in-house at Ocean Software, possibly typed up by Joffa Smifff (as the 2 of the sprite…

    ... INSTRUCTIONS

    MDRAW (SCREEN) OPTIONS
    ENTER -SET (P ... PAPER COLOUR
    CPS R -CLEAR SCREEN MENU
    EDIT -SPRITE / ... /> H -ATTR MODE
    AS SCREEN MODE


    2 -STORE SPRITE FROM SCREEN AT
    CURSER POSITION
    Mark R. Jones Mark R. Jones September 2014 Sinclair Miscellaneous
  • z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…

    ... br />

    // clear screen

    active_window = 0 ... }; // rectangle covering the full screen

    // ... B');
    sp1_UpdateNow(); // draw screen area managed by sp1 now ...
    slenkar slenkar June 2017 Development
  • Replaying games from Crash Issue 1Only a small conceit in the general scheme of things, but since Issue 1 of Crash was the first Spectrum mag I bought, and I remember wondering at the…

    ... fairly easy Beserk screen followed by a stupid fast Arcadia screen - no way ... %) - OK there's an entire screen of keyboard commands, this bodes ...
    Tan Coul Tan Coul September 2017 Games
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ... /> ;(c) 2017

    ;————————PREPARE SCREEN AND DISPLAY CONTROLS———————

    call 3503 ;clear screen, open channel “S”

    Ast_A_Moore Ast_A_Moore October 2017 Development
  • Shrinky challengeInspired by this contest on c64: http://nurpax.github.io/posts/2019-08-18-dirty-tricks-6502-programmers-use.html Make the smallest possible .tap t…

    ... a cross across the whole* screen.

    [img]http://iki ... 't even cover the whole screen, leaving the last text line ... bytes, which is basic for "clear screen, draw two lines". Hacking that ...
    Sol_HSA Sol_HSA August 2019 Development
  • Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…

    ... ive almost got there, one screen works fine, appears instantaneously, but ... will be fast enough, screen compilers sure as hell arent fast enough ... />
    [quote]The such screen size will be 9216 bytes ... a tap with 2 screen$ with fast load and autorewind oing ...
    Amigo Amigo March 2003 Sinclair Miscellaneous
  • Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…

    ... ive almost got there, one screen works fine, appears instantaneously, but ... will be fast enough, screen compilers sure as hell arent fast enough so ... this method isn't as fast and flickers more, at ... States to copy a screen from a screen location and you only ...
    cyborg cyborg March 2003 Sinclair Miscellaneous
  • great giana sistersI dont know if this is the most asked question of all time, but where can one get a download of this incredible game for the speccie?

    Does anyone have a clear screen of one of the sisters in this game? I want one for one of the wanted posters in "Hammer & Nails"

    [ This Message was edited by: Swainy on 2003-07-03 17:01 ]
    Swainy Swainy July 2003 Games
  • For Tetris experts/mega-obsessed fanatics !A difficult question, this: does anybody know any 'strategy' for clearing the entire area, i.e. fitting the pieces in such a way, that, eventually, a…

    ... more frequently in position to 'clear screen' :)
    Alex_Lux Alex_Lux February 2004 Games
<1234567…34>

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