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<1…16171819202122…34>
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... />
    Preliminary ideas for memory structure

    Three ... normally resident in that area).
    In addtion ... is used as Spectrum contended memory.
    D1 - selects ... 64k video memory.
    64k video memory probably won' ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…

    ... the Horizon Tapes used this area for the BIG PRINT routine ... variables will slide about in memory when you print.

    memory at 23296.

    A ...
    Geoff Geoff November 2002 Sinclair Miscellaneous
  • Basic and AY musicis it possible to play an ay-music in background while a basic program is running?

    ... read straight from the BASIC area of memory from DATA statements for ...
    cyborg cyborg January 2003 Sinclair Basic
  • Castlevania ZX looking REALLY nice in color :)[url="http://www.redeya.com/bytemaniacos/castlevania.html"]http://www.redeya.com/bytemaniacos/castlevania.html[/url]

    ... limited freedom within the 8x2 area.[/quote]

    No reason ... to update the bitmap area of the screen memory as well as ...
    cyborg cyborg February 2003 Games
  • "La Abad?a del Crimen" - English versionOK, I've started a new thread for this, as the discussion about "La Abad?a" in the [url="http://www.worldofspectrum.org/forums/viewtopic.php?mode=vie…

    ... of the Inquisition in that area , and a representative of the ... />
    The saved positions in memory will disapear when the computer ... saved or retrived from the memory , but you need to load ... positions , are 1st saved in memory , which menas they will be ...
    Sard Sard February 2003 Games
  • "La Abad?a del Crimen" - English versionOK, I've started a new thread for this, as the discussion about "La Abad?a" in the [url="http://www.worldofspectrum.org/forums/viewtopic.php?mode=vie…

    ... :33, Amigo wrote:
    [...] from memory but he says something like ... in the original code: the area is seven characters wide, yet ...
    Ed Ed March 2003 Games
  • 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…

    ... do in 8x2 in an area of regular 16x16 pixels. although ... />
    GMX is a Graphic memory expansion module for Scorpion to ... converted images directly into texture memory for greater speed. You card ... all), with 2.5 Mb memory expansion and a swapable HD ...
    LCD LCD March 2003 Sinclair Miscellaneous
  • games written using game writng programsI was reading through some issues of crash not long back and one article was about some 16 year old that wrote Frank n stein for the speccy(never pla…

    ... 't clear the status panel area of the screen before it ... for the game and this memory is allocated as and when ... the designer this 8k of memory (24576-32767) will be free ...
    jonathan jonathan April 2003 Games
  • Spectrum v Amiga : The Final starts.The final has begun, just in case you didn't know. The old Speccy is getting a bit of a kicking at the moment, so get those votes in!

    ... colors within a 24*21 area, or 4 colors if it ... your sprites and your play area and collision etc. I love ... models with some more features, memory, more ports and three channel ...
    Amigo Amigo April 2003 Games
  • games written using game writng programsI was reading through some issues of crash not long back and one article was about some 16 year old that wrote Frank n stein for the speccy(never pla…

    ... t clear the status panel area of the screen before ... the game and this memory is allocated as and ... the designer this 8k of memory (24576-32767) will be ... by loading screen$ into memory and recalling them or use ... tell you how much memory you have left before ...
    Amigo Amigo April 2003 Games
  • Most engrosing Adventure GameThis is one for all you text adventure lovers. Of which I am one. I remember reading those Fighting Fantasy books when I was a kid. The ones where y…

    ... this is to the area of memory taken up by the editor ...
    woodcock88 woodcock88 April 2003 Games
  • Most engrosing Adventure GameThis is one for all you text adventure lovers. Of which I am one. I remember reading those Fighting Fantasy books when I was a kid. The ones where y…

    ... this is to the area of memory taken up by the editor ...
    cyborg cyborg April 2003 Games
  • Most engrosing Adventure GameThis is one for all you text adventure lovers. Of which I am one. I remember reading those Fighting Fantasy books when I was a kid. The ones where y…

    ... this is to the area of memory taken up by the editor ...
    woodcock88 woodcock88 April 2003 Games
  • 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 pixel information ... 7 to get the 8 udg bytes on screen. There is ...
    Alcoholics Anonymous Alcoholics Anonymous June 2003 Sinclair Miscellaneous
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... sprite. This is _wasteful_ of memory... did anyone use this???
    ; ix is screen area
    ; sp points to (mask ...
    windenNTW windenNTW July 2003 Games
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... sprite. This is _wasteful_ of memory... did anyone use this???[/quote ... table
    ; ix is screen area
    ; sp points to (mask ...
    cyborg cyborg July 2003 Games
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... sprite. This is _wasteful_ of memory... did anyone use this???
    memory that you have available. At ... table
    ; ix is screen area
    ; sp points to (mask ...
    Alcoholics Anonymous Alcoholics Anonymous July 2003 Games
  • BASin Release 9a availableJust a quick not to say that an updated (ie, bug fixed) BASin is available. A list of what's new for release 9: Fixed a bug in the line tokeniser th…

    ... . Anyone who can write a UDG editor for the Spectrum twenty ... me is the Debug -> Memory Map. Just watching the machine ...
    Geoff Geoff September 2003 Development
  • Text compressionI'm sure I remember seeing a short machine code routine published in a (very random) multi-machine listings magazine way back in the mists of time, w…

    ... , which will use the same area of memory as in Defender, with ...
    The Mighty Dopethrone The Mighty Dopethrone October 2003 Games
  • Text compressionI'm sure I remember seeing a short machine code routine published in a (very random) multi-machine listings magazine way back in the mists of time, w…

    ... , which will use the same area of memory as in Defender, with ...
    The Mighty Dopethrone The Mighty Dopethrone October 2003 Games
  • Tough paging questionOK... Take this: 1. We have a program compiled and run from within GENS under a Pentagon 128K environment. 2. The program works perfectly. 3. We sav…

    ... memory).
    There is still a reserve and the second screen area ...
    LCD LCD November 2003 Development
  • i want to start writing my own gamesi want to start writing my own games but have no idea how. is there any downloadable dummys guides or some software that teaches u how. the only expe…

    ... , instantiate an internet class. Have memory leaks? Not if you're ... you specify a smaller screen area). It supports tile animation, pallette ...
    Alcoholics Anonymous Alcoholics Anonymous January 2004 Development
  • C64 & Spectrum loadingscreens!I was bored today, so I decided to compare some stuff. :) [url="http://www.lemon64.com/loadingscreens/"]http://www.lemon64.com/loadingscreens/[/ur…

    ... 't monochrome in the play area. There's also some extra ... CPC with 64K of usable memory could. And I don't ...
    John H John H February 2004 Games
  • 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 ... eZ80 and have 32 Mb memory.
    I myself think that ...
    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 ... eZ80 and have 32 Mb memory.
    [/quote]

    :o ...
    monty.mole monty.mole February 2004 Sinclair Miscellaneous
  • Platform vs BackgroundForgive my ignorance if this is a 'stoopid' question, but although I've written games for many platforms over the years I'm only now making my first …

    ... you describe Jonathon (ie reducing memory) would be to have a ... and reuse these - ie your area is a composite of certain ...
    cyborg cyborg February 2004 Development
  • Platform vs BackgroundForgive my ignorance if this is a 'stoopid' question, but although I've written games for many platforms over the years I'm only now making my first …

    ... other than speed and low memory usage. If you develop a ... /> I always keep a work area 768 bytes long for this ... more bits in this work area to keep track of enemies ... when the player 'enters' an area occupied by an enemy.
    TrueVideo TrueVideo March 2004 Development
  • UDG/sprite HelpRestore 5: For N=20 To 21: Read G$: For R=0 To 7: Read B: Poke Usr G$+r,b: Next R: Next N

    ... simple really - you poke the UDG area with the bit patterns of ... your UDG's, go into graphic mode ... as it features an inbuilt UDG editor.
    cyborg cyborg March 2004 Sinclair Basic
  • UDG/sprite HelpRestore 5: For N=20 To 21: Read G$: For R=0 To 7: Read B: Poke Usr G$+r,b: Next R: Next N

    [quote]
    On 2004-03-30 03:05, cyborg wrote:
    Pretty simple really - you poke the UDG area with the bit patterns of your UDG's, go into graphic mode then use the letters corresponding to them in your BASIC so you can print them.
    dalmudlee dalmudlee March 2004 Sinclair Basic
  • UDG/sprite HelpRestore 5: For N=20 To 21: Read G$: For R=0 To 7: Read B: Poke Usr G$+r,b: Next R: Next N

    [quote]
    On 2004-03-30 03:05, cyborg wrote:
    Pretty simple really - you poke the UDG area with the bit patterns of your UDG's, go into graphic mode then use the letters corresponding to them in your BASIC so you can print them.
    dalmudlee dalmudlee March 2004 Sinclair Basic
<1…16171819202122…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21

HitBox

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udg 1.5K 2.5K
memory 21.8K 32.5K
area 8.9K 11.2K

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