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 0.003s
<1…15161718192021…34>
  • Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…

    Realistically it's one Z80 access to contended memory for every eight cycles during the display being drawn.
    Bob Stains Bob Stains May 2009 New game ideas
  • Vectron borders on emulators, on a real spectrum ?Hi all, favor if anyone has time can someone load vectron on a real spectrum and when it finally loads on that screen the bottom right corner .. wher…

    ... you this information: a first contended cycle of 0x08 is early ...
    Philip Kendall Philip Kendall May 2009 Emulators
  • Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…

    ... might as well use the LDI version. The PUSH one does ...
    joefish joefish May 2009 New game ideas
  • Graphics mode:64x48x8 colors possible on Spectrum?That multicolor River Raid demo inspired me to make this question: If we filled all the screen with chessboard pattern [code] 00001111 00001111 00…

    ... be possible on clones without contended memory).

    Incidentally, you ...
    gasman gasman May 2009 Development
  • River Raid Tech DemoJust a little something to look at. Enjoy. [URL="http://www.joefish.co.uk/speccy/Joefish_River_Raid_Tech_Demo_01.tap"]Joefish_River_Raid_Tech_Demo_…

    ... . They were designed for an LDI-based colour system that only ...
    joefish joefish May 2009 Development
  • Graphics mode:64x48x8 colors possible on Spectrum?That multicolor River Raid demo inspired me to make this question: If we filled all the screen with chessboard pattern [code] 00001111 00001111 00…

    ... be possible on clones without contended memory).

    Incidentally, you ...
    Dr BEEP Dr BEEP May 2009 Development
  • 48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…

    ... 't affected by I addressing contended memory at all.
    Bob Stains Bob Stains June 2009 Games
  • Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…

    ... put the main routines in contended RAM and the text data ... in non-contended RAM. The scroll routine is ...
    Jimmy Jimmy July 2009 Development
  • Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…

    ... of the code engine in contended RAM. Even the UDG/screen ... back buffer is in contended RAM ($7F00).
    Jimmy Jimmy July 2009 Development
  • Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…

    ... of the code engine in contended RAM. Even the UDG/screen ... back buffer is in contended RAM ($7F00).[/QUOTE]
    Which ...
    SkoolKid SkoolKid July 2009 Development
  • Skooldaze TooDear WoSsers, Thanks to Skoolkid's disassembly I'm attempting to write a new "improved" version called [B]Skooldaze Too[/B]. As part of the improvem…

    ... the sound code runs in contended RAM, but the +3 mode ...
    Jimmy Jimmy July 2009 Development
  • New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…

    ... a 12x1 multicolour section using LDI that only changed the colour ...
    joefish joefish August 2009 Development
  • Hidden routine in loading screenAs discussed in another thread, the loading screen for [B]Back To Skool[/B] seems to have a hidden routine (in blue INK and PAPER). It would be inter…

    ... loading
    -screen memory is contended (means slower and the way ...
    Fikee Fikee August 2009 Development
  • Hidden routine in loading screenAs discussed in another thread, the loading screen for [B]Back To Skool[/B] seems to have a hidden routine (in blue INK and PAPER). It would be inter…

    ... loading
    -screen memory is contended (means slower and the way ...
    spider spider September 2009 Development
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... -up', cycle wise - so that LDI was 4 t-states instead ...
    frobush frobush September 2009 Chit chat
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... -up', cycle wise - so that LDI was 4 t-states instead ... . There's no penalty on LDI, as that takes 16 states ...
    Matt_B Matt_B September 2009 Chit chat
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... . There's no penalty on LDI, as that takes 16 states ...
    frobush frobush September 2009 Chit chat
  • Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …

    ... 30]

    For the contended RAM (which shares time between ... /> allowed only 1 access to contended RAM in every 8 T ...
    mcleod_ideafix mcleod_ideafix October 2009 Hardware
  • Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…

    ... ever set I register in contended ram on an emulator, but ...
    nuggetreggae nuggetreggae October 2009 Hardware
  • AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…

    ... at all - it uses the (contended) clock signal on the edge ...
    gasman gasman October 2009 Hardware
  • AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…

    ... at all - it uses the (contended) clock signal on the edge ... the player is running within contended RAM because the effective clock ...
    Winston Winston October 2009 Hardware
  • AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…

    ... the player is running within contended RAM because the effective clock ...
    BloodBaz BloodBaz October 2009 Hardware
  • AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…

    ... after discovering that the external (contended) AY had a different clock ...
    gasman gasman October 2009 Hardware
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... to be used is already contended, it gets rid of this ...
    Winston Winston November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... />
    The port is also contended anyway, because when the CPU ...
    csmith csmith November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... will be vital. Even properly contended, palette changes are instant in ...
    Dunny Dunny November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... the border colour port is contended, and the ink and paper ... entries are fetched during the contended period, the border colour load ...
    csmith csmith November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... . Palette updates however will be contended.
    5. Changes in the ...
    csmith csmith November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... so when the CPU is contended anyway (pixel display update) seems ...
    csmith csmith November 2009 Emulators
  • SP and IM2 woesI have a function that writes the backbuffer to the screen using the method by which SP is stored, I "POP" a load of registers and then chnge SP to t…

    I didn't know that, that explains everyting.

    I will look into

    a) Breaking halfway through (Good thinking)
    b) Changing the function to not us SP (I only use it to set up the LDI values)

    THanks
    robpearmain robpearmain November 2009 Development
<1…15161718192021…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott 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
  • European Software Titles with an English version
    harriusherbartio 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
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
ldi 487 1.9K
contended 1.2K 2K

Related Threads

  • Games that crash because of contended memory.I find these are really annoying.<br /> <br /> You load up a game like Astro Marine Corps, Fantasy World Dizzy, Dizzy: Prince Of The Yolkfolk and so …
  • R Register, Contended RAM and ClonesHi.<br /> I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - …
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…
  • contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
  • Contention: LDI vs LD (ss), rAccording c.s.s. FAQ:<br /> <br /> instruction LD (ss),r breakdowns as pc:4,[b]ss:3[/b]<br /> and LDI as pc:4,pc+1:4,hl:3,[b]de:3,de:1 x 2[/b]<br /> …
  • Quick question regarding contended memoryIf I've read the documentation correctly, the following applies:<br /> <br /> 128k/+3<br /> "Memory banks 1,3,5 and 7 are contended"<br /> <br /> +2A…
  • +2 grey Contended RAMhi all,<br /> <br /> i have some quenstions about,<br /> <br /> contended RAM are banks 1,3,5,7<br /> <br /> banks are the pairs of IC's (4164), so 1…
  • Contended Memory woes...Hello All,<br /> <br /> An iccle problem I have and was hoping one of you fine WoSers could bail me out again... :)<br /> <br /> I've noticed that my…
  • LDI questionWhen using LDI (or LDD) is it possible to access the value that is transfered from (HL) to (DE), or does the Z80 use an internal data cache to store …
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

Related Searches

  • led storm contended
  • crash contended
  • contended author einar
  • contended einar
  • contended memory
  • halt in contended memory
  • halt contended
  • contended memory zxds
  • contended
  • contended speed
  • zx evo contended
  • contended instructions
  • tc2048 contended
  • tc2048 contended io
  • skate crazy contended
  • contended port
  • zx 3 contended
  • pentagon contended 16k
  • rmartins ldi buffer
  • ldi contention

Copyright © 2024 World of Spectrum