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  • ZX81 Emulator (HARDWARE FREAKS NEEDED!!!!)For the ZX Spectrum I have programmed a ZX81-emulator. ZX81 games can't run directly on a ZX Spectrum due to memory adresses used by the Spectrum (li…

    ... that remains is the screen-mapping. Adress 16384 is part of ZX81 ... RAM to load a program. The screen ... to 56063 for the Spectrum screen?

    In this way ... , but during an intrupt the screen (positioned at 49152) will be ...
    Anonymous Anonymous April 2002 Sinclair Miscellaneous
  • ZX81 Emulator (HARDWARE FREAKS NEEDED!!!!)For the ZX Spectrum I have programmed a ZX81-emulator. ZX81 games can't run directly on a ZX Spectrum due to memory adresses used by the Spectrum (li…

    ... switch the screen to 49152, but it also alters adresses 16384 and ...
    Dr BEEP Dr BEEP April 2002 Sinclair Miscellaneous
  • Hardware specialists ?????Are there any Sinclair hardware specialist around here? I think most of you are more gamers and I need a hardware specialist for some questions!!!!

    ... point to 49152 instead of 16384.[/quote]
    Use a +2A ... make page 7 the active screen.
    The overall speed will ...
    secarica secarica April 2002 Sinclair Miscellaneous
  • Quiz V - the revenge of D`n`C Ok, 50 quick fire questions.. some cryptic - you`ll have un unravel the clues to get the game name, while others are description of the game. Ther…

    1: What came free with the Nov 87 issue of Your Sinclair magazine that provoked outrage by many parents?
    (1 point)

    Copy of Viz comic book

    2: Two games on one cassette. Fly a magic carpet across Bagdad is one, the other is ...
    Arjun Arjun May 2002 Games
  • Quiz V - the revenge of D`n`C Ok, 50 quick fire questions.. some cryptic - you`ll have un unravel the clues to get the game name, while others are description of the game. Ther…

    Answers and results.

    1: What came free with the Nov 87 issue of Your Sinclair magazine that provoked outrage by many parents?
    (1 point)
    A 16 page issue of Viz magazine.
    -----------------
    Viz- TheComputerGame - I think ...
    MatGubbins MatGubbins June 2002 Games
  • Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …

    ... values into 16384 and 16385 at the top of the screen, call ...
    Geoff Geoff July 2002 Sinclair Miscellaneous
  • Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.

    But if it is the RAM then it must be the range 16384 to 32768 (?) for it doesn't start and gives wrong values on screen. If it were higher adresses then the Spectrum would start, but will not use all memory due to the memory test.
    Dr BEEP Dr BEEP September 2002 Sinclair Miscellaneous
  • how do I use the z80-400.zip emulatorI'm probably being thick but I want to play an old game I loved called Gothik. I've downloaded it, together with the z80-400.zip emulator but I can't…

    ... get an Open Tape File screen which shows Gothik.tap. I ... OK then I get a screen showing a lot of gob ... (147)
    Bytes Gothik1 code 16384,6912
    Data (6912) etc ... to the Open tape File screen again to start the process ...
    pacman fan pacman fan January 2003 Emulators
  • how do I use the z80-400.zip emulatorI'm probably being thick but I want to play an old game I loved called Gothik. I've downloaded it, together with the z80-400.zip emulator but I can't…

    ... get an Open Tape File screen which shows Gothik.tap. I ... OK then I get a screen showing a lot of gob ... (147)
    Bytes Gothik1 code 16384,6912
    Data (6912) etc ... to the Open tape File screen again to start the process ...
    BadBeard BadBeard January 2003 Emulators
  • 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…

    ... it is only half of screen with 8x1 attributes, only 128 ... the second screen from 49152 to the first one at 16384, that ...
    LCD LCD 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…

    ... to copy a screen from a screen location and you ... bam", it displays on the screen in an instant. the ... second screen from 49152 to the first one at 16384, that ... and then display on screen and continue and so ... of using the whole screen but i recommended using ...
    Amigo Amigo March 2003 Sinclair Miscellaneous
  • Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…

    ... file occupies 16384-23295 in memory. 16384-22527 holds ... />
    for z=16384 to 22527: poke z,255 ... than constantly calculating new screen addresses from pixel coordinates ... connection between character coordinates, screen address and attribute addresses. ...
    Alcoholics Anonymous Alcoholics Anonymous June 2003 Sinclair Miscellaneous
  • compatibility between ZX computers?Hey all, I'm new here :) I was wondering about compatibility between ZX computers. Is it possible to run a game made for ZX80 on a ZX Spectrum? Or a …

    ... to, but a shadow screen remains at #4000-5B00< ... RAM 7 is the alternate screen space so you can page ... RAM and have the screen as RAM 7 leaving ... RAM 2
    RAM 7 - Screen

    Which is what ... 2 remains the screen, so PEEK 16384 would remain a screenadress ...
    Dr BEEP Dr BEEP July 2003 Sinclair Miscellaneous
  • compatibility between ZX computers?Hey all, I'm new here :) I was wondering about compatibility between ZX computers. Is it possible to run a game made for ZX80 on a ZX Spectrum? Or a …

    ... , BANK 2 remains the screen, so PEEK 16384 would remain a screenadress ... emualtor from machine code. The screen will go black as RAM ... banks, as well as the screen, but as far as I ... know the screen only makes a copy in ... the point of an alternate screen?
    cyborg cyborg July 2003 Sinclair Miscellaneous
  • Need_Help...*.SCR TO *.TAPPLEASE...NEED HELP... HOW MADE STANDART 6912 BYTES ZX-SPECTRUM SCREENBLOCK (.TAP OR .TZX),FROM .Z80 OR .SCR(.GIF) FILE??? In 'Taper' convert .z80…

    ... . Then save it as a screen$ or code.
    [/quote]

    then just LOAD "" CODE 16384
    BadBeard BadBeard October 2003 Games
  • Z80 to TZX Converter !Hey Everyone ! I have a bit of time lately and I coded a little utility that can convert the Z80 snapshot (any version, 48k and 128k supported) to T…

    ... I had to corrupt the screen also due to preloading your ... -loader for the screen and then GO TO USR 16384 to load ... .

    So using the screen is necessary to load registervalues.
    Dr BEEP Dr BEEP December 2003 Development
  • TZXed without real tapeEverybody, who knows, answer please... I have lot of ZX games, which not presented in WOS database. But they are in PC format (as dat.files, for exa…

    ... same parameters as my files (screen - 6912 bytes, code file - length ... I cut (with WinHex) old screen & code file and paste ... my screen and code file. Finally I ... 0: CLEAR 24999: LOAD "" CODE 16384,6912: LOAD "" CODE 25000,40536 ...
    Viktor Drozd Viktor Drozd December 2003 MIA/STP/SDP
  • TZXed without real tapeEverybody, who knows, answer please... I have lot of ZX games, which not presented in WOS database. But they are in PC format (as dat.files, for exa…

    ... same parameters as my files (screen - 6912 bytes, code file - length ... I cut (with WinHex) old screen & code file and paste ... my screen and code file. Finally I ... 0: CLEAR 24999: LOAD "" CODE 16384,6912: LOAD "" CODE 25000,40536 ...
    Viktor Drozd Viktor Drozd December 2003 MIA/STP/SDP
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... "Midget" that uses the screen area 16384-23295, but if switched to ...
    LCD LCD February 2004 Sinclair Miscellaneous
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... "Midget" that uses the screen area 16384-23295, but if switched to ...
    monty.mole monty.mole February 2004 Sinclair Miscellaneous
  • Semi-Newbie QuestionsHi Peeps, OK, I'm starting to play with my old spectrum again I have been rather spoiled by my Atari 800xl and a tape to disk utility. To the poin…

    ... will most likely be a Screen$ this time, and if it ... />
    Save "a:Picture" Code 16384,6912

    for example ...
    Sadako Sadako February 2004 Sinclair Miscellaneous
  • help with sprites from SevenUpHas anybody got source for a short m/c rountine that can send sprites designed in SevenUp to the screen or to a dummy screen? A long time ago, I wor…

    ... /> The way the Spectrum's screen layout is divided into thirds ... determine which third of the screen you're dealing with, usually ... the high byte of your screen address - 16384, 18432 or 20480.
    jonathan jonathan April 2004 Development
  • new programmer needs information hi , i have been learning c++ for a while and am trying to make games using windows but being 28 and nostalgic , i thought it would be fun try and f…

    If the screen would be in ROM, you ... /> The screen0 area is from 16384 to 22527, followed by 768 ...
    LCD LCD May 2004 Development
  • new programmer needs information hi , i have been learning c++ for a while and am trying to make games using windows but being 28 and nostalgic , i thought it would be fun try and f…

    ... with small areas of the screen updated and small sprites. You ... up to 64 sprites on screen at once (though slowly, ... where large parts of the screen are updated and sprite shearing ... memory mapped display. Memory from 16384-23295 contains pixel and attribute ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • My first attempt at Gigascreen interlacingWonderful. Did some research on the port which controls memory paging and wrote a short BASIC programme to switch pages 5 and 7 in and out of the scr…

    ... of RAM to display the screen, at 16384. so, no you can ...
    Sadako Sadako May 2004 Development
  • Does Screen Flipping work on a 48k Spectrum?On the other post it showed some basic code to flip the screen on a +3. Does it work on a 48k Spectrum. Can anyone show me the machine code to: Se…

    ... the backbuffer over the main screen (4000h) I guess
    ... [code]
    LD HL,16384 'start screen
    LD DE,49152 'start ... LD BC,6912 'length of screen
    LOOP LD A,(DE ... ,B 'test for end of screen
    OR C
    ...
    Dr BEEP Dr BEEP May 2004 Development
  • Dotty (Dollarsoft) - Bug... ?!?Hi all ! If you ever been frustrated with baddies in pacman game (they're 'stupid' but they always win, soon or later), this one is cure :) Game …

    ... , 46920 and 53840. The 3rd screen has been partially overwritten with ... have over half of screen!) and finish the screen yourself :)

    16384 to see it.
    Mr. Anonymous Mr. Anonymous July 2004 Games
  • Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…

    ... a character. For PRINT the screen is easy, for MC scrolling ... harder.

    PRINT TO SCREEN
    [code]
    LD HL ... printable char
    LD HL,16384 ; or any other screenposition
    Dr BEEP Dr BEEP August 2004 Sinclair Miscellaneous
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... DE,(SCRADR) ; taking precalculated screen address where to draw sprite ... /> LD (SCRADR),HL ;store screen address for sprite drawing
    * Routine to Generate a screen address table
    * SCRTAB ...
    GENSCRTAB LD DE,16384
    LD HL,SCRTAB
    dmsmith dmsmith August 2004 Development
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …

    So after the screen is updated[I understand ... the video memory
    (16384-23296) is displayed on TV ... the information from the address 16384-23296 accessed ?
    (Dont ... has to access the memory(16384-23296) from the chip, ... the refresh of the screen happens ?
    cispasoiu cispasoiu August 2004 Development
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