World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.019s
<1234567…34>
  • A BASIC compiler projectHi, I started my own BASIC compiler for the ZX Spectrum (and Z80 machines) 3 months ago. It's still in ALPHA stage (when it is mature, I will write …

    ... support of Color codes, UDG and block graphics is ... binary code could overlap the UDG memory area. The best way to ... define a UDG is using a predefined ... br />
    [code]DIM UDG(7) as byte = {0, ... br /> POKE UINTEGER 23675, @UDG(0)
    REM @x means ...
    boriel boriel February 2009 Development
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... run machine code from the memory area used by the display file ... you were really out of memory and some part of screen ... some code in the display area and run it like any ...
    Rickard Rickard May 2007 Development
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... I point it to the memory area containing the graphics? What does ... the screen memory by the PRINT routine. Just like a UDG!

    So by pointing CHARS to some other area of memory ... to convert them to character (UDG, or 1x8) format for this ...
    Dunny Dunny February 2007 Development
  • Converting m$ to dataI created a maze using a matrix of 704 characters. In order to save memory, and since the maze it's just walls and spaces which could be interpreted …

    ... characters. In order to save memory, and since the maze it ... bytes of reserved memory area (e.g. just below the UDG area after performing ...
    BloodBaz BloodBaz May 2007 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... />
    Using a separate DEFADD area to hold single letter variables ... still be recognised as that area gets searched first by LOOK_VARS ... s not in the VARS area, hence spectacular mayhem results.[/QUOTE ... of code that restores the UDG memory after use of the DEF ...
    Paddy Coleman Paddy Coleman February 2012 Sinclair Basic
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ...
    ; THE 'GET FROM MEMORY AREA' SUBROYTINE
    org 0x3472
    ; THE 'STORE IN MEMORY AREA' SUBROUTINE
    org 0x3483
    memory area to HL
    call loc_mem ... /> ld bc, (udg) ; address of first UDG to BC
    ...
    chev chev October 2013 Development
  • Pentagon interface news from VELESOFTIt's from Xagon's board. It is about new interface for Speccy - it make Your comp compatible with Pentagon (and not only) and also it gives You up t…

    ... version expands the ZXS 128 memory to 512kB,
    includes ... />
    - Pentagon 512kB mode (all memory is fast)
    Higher RAM ... are in the higher
    memory area above 128kB RAM)

    The extended memory is of course not erased ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... to draw everything in upper memory area, but what about other commands ...
    Arda Arda November 2006 Sinclair Basic
  • Help with having more than 21 UDGSHi All, I'm trying to work out how to have multiple banks of UGS. What I've read so far is that the default memory area for. 48K is 65368 16K is 326…

    ... far is that the default memory area for.
    48K is 65368 ... can alter the memory area by
    LET v=memory area
    Then you ... are the full range of memory areas available for 48K?
    What are the full memory areas available for 16K?
    Phil2 Phil2 June 2007 Sinclair Basic
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... addr is in the screen memory area.)

    There is a ...
    Jimmy Jimmy August 2008 Sinclair Miscellaneous
  • How does the Speccy deal with the Character Set?Hi All, Can anyone spare a little time to explain to me the basic Assembly method of how the Speccy interprets and retrieves Characters to print on …

    ... character set is accessed via memory location 23606. Here the 'pointing ... each character within the character memory area and jump around the said ... area to piece a word together? ...
    Jagd Tiger Jagd Tiger February 2009 Development
  • Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…

    ... bytes in the Spectrum's memory.
    In this chapter ... few bytes into the memory generating a score for ... bytes are now at memory address 33000 by clicking ... of the Spectrum's memory which have a direct ... order in which this memory area is mapped onto the ...
    bigjon bigjon November 2009 Development
  • Need help with interrupts againI'm fighting to understand how interrupts code handling works I'm trying to set my simple own interrupt routine, as I don't want to be dependent on …

    ... me is to use freely memory area from 23296 to about 24000 ... Basic interrupt routine overwrites this memory.

    Here is ... 0-255)
    ;it is memory area 23296-23551 filled with 255 ... to mess with system variables memory area.

    What am ...
    Ralf Ralf November 2009 Development
  • PokesAfternoon people, before i begin can i just stress that i am an ultimate newbie when it comes to the spectrum so forgive me for my ignorance,but i ne…

    ... when loaded tell you the memory area that needs poking,is there ...
    bully bully June 2011 Games
  • Blitz - incorrectly listed as 16k[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027592[/url] The memory needs to be changed from 16k to 48k. Due to my silly own self, I for…

    ... =0027592[/url]

    The memory needs to be changed from ... the 16k machine's main memory area (it overwrites part of the ...
    pottyboy pottyboy April 2012 Infoseek database
  • A small thoughtexperiment.Hi. Let's say that i have a 48K Issue 3b spectrum, and i want to be able to disable the top 32K ram from an external interface. This interface would…

    ... would occupy the 32K-64K memory area.

    I was thinking ...
    Rorschak Rorschak June 2012 Hardware
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... to produce something in this area...

    Last week, motivated ... bytes long, requires no extra memory area, and only affects the main ...
    Einar Saukas Einar Saukas December 2012 Brand new software
  • Binary to REMHi, I'd like to convert binary data stored on tape into BASIC rem statements that I will then save to disk. Is there a utility to extract the files …

    ... tape and then saving the memory area to disk to extract it ...
    Speccy_James Speccy_James January 2014 Development
  • Problem Reading the KeyboardHi Folks, I'm working my way through Toni Baker's rather good book and thought I'd write some code to scan the keyboard and store the results so tha…

    ... to the old keyboard state memory area
    ;3 - Loop through the ... states in current keyboard state memory area
    ;4 - Restore the registers ... keybstates in current key state memory area
    _storeKey1 ;First key in ...
    KrazyKattapilla KrazyKattapilla July 2014 Development
  • Screen buffer Tip from Raff CeccoRaff very kindly gave me this tip: "Incidentally, I remembered a trick I used on the Z80 for extra speed: When clearing the screen buffer, it was a…

    ... the end of the screen memory area and push zero values onto ... the stack until the screen area was filled.

    At ... to its original position in memory. I think this worked because ...
    alienbanana alienbanana October 2014 Development
  • Understanding contentionI'm trying to understand contention and its implications when some "weird" bus cycles (such as I/O cycles with I/O addresses in the contended memory …

    ... /O addresses in the contended memory area) are issued.

    ... is both memory and I/O contention. Memory contention causes T1 ... T1?

    Also: memory contention makes T1 to be ... avoid memory contention) that begins at the start of contended area ...
    mcleod_ideafix mcleod_ideafix May 2015 Hardware
  • Execution map file support in different emulatorsAs I'm now seeking about execution map files, the different emulators support, I want to start a new discussion here. Today, I tried to create a mem…

    ... , I tried to create a memory map with Z80 emulator, but ... byte of the 64 k memory area.
    bit =1 means code ...
    clausjahn clausjahn July 2015 Emulators
  • Some Graphic Coding & Audio help.Hello my fellow WoS'ers I am in the process of writing some code for graphical purposes - I have Z88DK raring to go but I do not know how to take…

    ... to take bytes from a memory file and put them on ... in regards to the +3 memory area(s).

    I have ...
    Zetr0 Zetr0 August 2016 Software
  • Direct drive LCD screen - looking for information on previous projects people may have attempted.Hi All, My first post, so please forgive and guide if I've posted in the incorrect section. I'm a speccy user from way back in the 80's, but m…

    ... shadow RAM ( 16K dual-ported memory ) that maps over the Spectrum ... second copy of the video memory area ( or, potentially, replace the lower ... will have it's own memory, in parallel to the spectrum ...
    cj7hawk cj7hawk December 2020 Hardware
  • Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…

    ... into the existing 6K video memory area? A big 32K chunk? A ... into the final 16K of memory as 3 chunks, with 2 ... occupy the lower 48K of memory and leave the upper 16K ... " video screen and variables/basic area that typically sit from 4000 ...
    cj7hawk cj7hawk October 2021 Hardware
  • "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…

    ... tool that resides in screen memory area. Now with PC this is ...
    LCD LCD February 2003 Games
  • 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 …

    ... display is drawn and display memory (16384->23295) is ... access.

    The memory region where the z80 and ... simultaneously access is called 'contended memory' and a detailed description ... 16384->32767 because this memory area is populated by a ...
    Alcoholics Anonymous Alcoholics Anonymous August 2004 Development
  • Clone Project feedbackFinally i now have some time to start again with my clone project. I have decided to drop the 48k project and go directly on a 128k clone. This migh…

    ... want to have enough memory to add extra grapich ... in the future. And memory is cheap.[/quote]
    ... the Z80 in video area access, only for compatibility ... or smth instructions in video memory area).

    If ... then this type of memory is not so cheap.< ...
    secarica secarica August 2004 Sinclair Miscellaneous
<1234567…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

Word Docs Hits
udg 1.5K 2.5K
memory 21.8K 32.5K
area 8.9K 11.2K

Related Threads

  • 32k memory Italian memory expansionNot mine but its an [URL="http://www.ebay.co.uk/itm/TENKOLEK-32K-RAM-Expansion-Sinclair-ZX-Spectrum-/320861810075?pt=UK_VintageComputing_RL&amp;hash=…
  • Basic listings memory occupationI remember readong someplace that due to basic's representation of number, in a program, in order to save space, it was better to represent integers …
  • What's you happiest speccy related memory?Mine would have to be coming home from school at lunchtime with a couple of friends, loading up manic miner or commando for a quick 30 minute game-pl…
  • Funniest Speccy related memoryOkay, there maybe won't be that many, but I have a couple that might conjour up some jolly jape memories.<br /> <br /> 1. Walking home from school wi…
  • What is your worst Speccy related memory?We've had the good times, but there were bad times too. I will give you two choice cuts from my back catalogue...<br /> Over at a friends house, want…
  • Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency.<br /> As we all know the start of the RAM is at 16384 which …
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
  • ZX80/81 memory expansion and 48k + Lightpen for saleAll are in original packaging and the lightpen has it's software and manual.<br /> <br /> The memory expansion is a 16k one.<br /> <br /> E-mail me a…
  • Editing in-game UDG'sI have just started playing an RPG that was in Sinclair User in 86'. The game is called Forest of Long Shadows and was excellent. You can find it on …
  • 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

Related Searches

  • lowest memory for code
  • lowest memory position for machine code
  • lowest memory position machine code
  • lowest memory machine code
  • lowest memory code
  • lowest memory
  • memory map
  • udg
  • disable 128 udg
  • spectrum 128 udg
  • udg spectrum play
  • udg 128 spectrum play poke
  • udg spectrum play poke
  • udg spectrum play 128
  • how to save udg
  • sve udg
  • udg memory
  • udg memory 65368
  • code in udg memory
  • udg area

Copyright © 2024 World of Spectrum