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 0.002s
<1…17181920212223…34>
  • My emulator doesn't take "commands"Hi This is probably a question that is very hard to answer, but perhaps some of you have/had the same problem. In my own emulator (that I have built)…

    ... doubt any of the block IO instructions will cause 48K BASIC ...
    Laser Laser March 2007 Emulators
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... mode, which has no memory contention. Other than that, it behaves ... will. The lack of memory contention will make things move quite ...
    Dunny Dunny April 2007 Emulators
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... mode, which has no memory contention. Other than that, it behaves ... will. The lack of memory contention will make things move quite ...
    mulder mulder April 2007 Emulators
  • Need advice choosing one of these optionsA few spanish friends are willing to help me build and program the ethernet interface for the Speccy. Here are the possibilities. Any advice would be…

    ... spectrum > serial IO interface. For whatever serial IO you choose (I2C ...
    dtl dtl April 2007 Hardware
  • non standard loader bar coloursAs with my speedloader thread, when did non standard colours start to appear and who came up with the idea and what was the reaction?

    ... timing problems due to memory contention so such a routine would ... , it is due to memory contention that you will not find ...
    BloodBaz BloodBaz April 2007 Games
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... would have required much more contention for lower RAM with ... the Spectrum's simple contention scheme. The 48K Speccy when ... also had a more complex contention scheme too such that ... , such that there was no contention slowdown.

    (Incidentally, ...
    Winston Winston April 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... also had a more complex contention scheme too such that the ... , such that there was no contention slowdown.[/QUOTE]

    The ... might not have had any contention issues at all. The 6502 ...
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... required to get around the contention problem gives it its distinctive ...
    Woody Woody April 2007 Sinclair Miscellaneous
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... /> [QUOTE=Philip Kendall;51298]Memory contention would send your timings off ...
    BloodBaz BloodBaz April 2007 Sinclair Miscellaneous
  • GP2X - Spectrum EmulationHi all. Looking for advice on the GP2X and (especially) the quality of its ZX Spectrum emulation. Has anybody anything to say about the console - is…

    ... z80 format bugs, enabled memory contention emulation and added an option ... this weekend to add proper contention emulation, looking the FAQ and ...
    Metalbrain Metalbrain May 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... instruction timings
    - Added bus contention for IN and OUT
    - Replaced the memory contention emulation using a more precise ...
    Metalbrain Metalbrain May 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... instruction timings
    - Added bus contention for IN and OUT
    - Replaced the memory contention emulation using a more precise ... />
    Excellent news. However, memory contention isn't all that important ...
    Dunny Dunny May 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... ;189870]Excellent news. However, memory contention isn't all that important ...
    Metalbrain Metalbrain May 2007 Emulators
  • Reconditioned Sam Coup?, two drives + more...I've popped up a reconditioned Sam Coup&#233; on eBay as a Buy-It-Now listing. [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=11012902618…

    ... of the Spectrum due to contention issues - a phenomenon that I ...
    48K 48K May 2007 Sales
  • 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…

    Many opcodes have fewer points of contention when running on a +2A/+3.
    Woody Woody May 2007 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…

    ... I don't understand what contention point means, but I assume ... (each ULA type has different contention points, correct?) Can you ... 3's opcodes has less contention points, it is contended ... might have more contention points for opcodes, but contention is [B] ...
    omega omega May 2007 Development
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... . Having exact cycle emulation and contention handling it should just work ... /> However, Jasmin does not handle contention yet. So don't expect ...
    micapolos micapolos May 2007 Emulators
  • Reconditioned Sam Coup?, two drives + more...I've popped up a reconditioned Sam Coup&#233; on eBay as a Buy-It-Now listing. [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=11012902618…

    ... of the Spectrum due to contention issues - a phenomenon that I ...
    Quazar Quazar May 2007 Sales
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... is memory and I/O contention in "physical" terms. How does ... look unlikely to me, since contention only take place when reading ... start to design and implement contention emulation.

    Regards,
    micapolos micapolos May 2007 Emulators
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... is both why you get contention only for contended memory, and ... things like IR contention and I/O port contention, neither of which ... with our best knowledge of contention: if you want the latest ...
    Philip Kendall Philip Kendall May 2007 Emulators
  • 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…

    ... I don't understand what contention point means, but I assume ... (each ULA type has different contention points, correct?) Can you explain ... per frame and no additional contention hits on performance over the ... and they all can cause contention. The +2A/+3 machines ...
    Woody Woody May 2007 Development
  • Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…

    ... the system layout (busses, RAM, IO, etc) is based on 8 ...
    Laser Laser May 2007 Development
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... stop the CPU clock when contention occurs). That will probably be ...
    Winston Winston May 2007 Hardware
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... stop the CPU clock when contention occurs). That will probably be ...
    Avian Avian May 2007 Hardware
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    ... ]You can read about memory contention [URL="http://www.worldofspectrum.org ...
    Woody Woody May 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    Is contention necessary for the border routines ...
    rich_chandler rich_chandler June 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    [QUOTE=karingal;193731]Is contention necessary for the border routines ...
    Dunny Dunny June 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... keyboard profile
    - Fixed memory contention for +2A/+3 models (Overscan ...
    Metalbrain Metalbrain June 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... offenders? I've optimized the contention code and was thinking about ...
    Metalbrain Metalbrain June 2007 Emulators
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... offenders? I've optimized the contention code and was thinking about ...
    Laser Laser June 2007 Emulators
<1…17181920212223…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
io 895 1.3K
contention 1.4K 2.4K

Related Threads

  • IF1 and IO portsThe Interface used 3 Z80 IO ports to communicate to it s devices<br /> #E7- Microdrive data<br /> #EF- Status and control<br /> #F7- RS232/Network…
  • Sound and IO expansion not in hardware pageI saw this on ebay:<br /> [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&amp;item=2045474851"]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&…
  • Z80 cycle contentionHi,<br /> Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle?<br /> I mean which Z80 clock cycle, T1 or T2?<br /> …
  • Memory Map/ContentionHi <br /> I'm new to speccy coding (well I did some z80 coding a few years back - like 20yrs ago :) ), and I'd like to get back into writing some scr…
  • I/O contention model questionHi everyone,<br /> <br /> Sorry for my poor english. Together with a friend we are working on ZX<br /> Spectrum 48k implemented in FPGA. We have foun…
  • Contention and floating bus timingHello,<br /> <br /> I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit.…
  • IO Error on erzxternal hard driveI have an external hard drive that I plug in to my PC's via a powered USB 2.0 port.<br /> <br /> It has been working fine for about 18 months or so. …
  • Z88DK - file IO on a plus 3So I have this very simple program, and it doesn't want to open a file for writing:<br /> <br /> [code]<br /> #include <br /> #include <br /> <br /> …
  • Contention detectionJust a thought, based on discussion elsewhere...<br /> Is there any way of telling if reads/writes are being contended around the time that they happ…
  • 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 /> …

Related Searches

  • io port
  • harlequin contention
  • contention
  • memory contention
  • io
  • detect contention
  • tc2048 contention
  • tc2048 contended io
  • tc2048 contention tests
  • divide contention
  • contention bank
  • 128k contention
  • 128 contention
  • io boards
  • ir contention
  • itch io
  • ir contention test
  • 48k contention suite
  • 48k contention test suite
  • io contention on the 3

Copyright © 2024 World of Spectrum