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Search Again :: Adv Search 1000 results in 0.009s
<1234567…34>
  • RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…

    ... find some detail information about RAM paging on the Spectrum 128 and ... TS2068
    No RAM paging, but always fixed 48k RAM starting at address ... /> In addition to the paging methods of the Spectrum 128k ... used to select the RAM bank for paging at address C000.. ...
    clausjahn clausjahn June 2008 Hardware
  • RAM PagingCan anyone shed some light as to how RAM paging actually works, at a hardware level (so not POKE xxxxx stuff). I know about CE and OE lines on DRAMs …

    ... some light as to how RAM paging actually works, at a hardware ... is employed to trigger the paging?
    Womble Womble December 2009 Hardware
  • 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…

    ... glitches, especially in matters of paging.
    6. The generated code ... /> I thought the paging system for the RAM on the +3 should ... anything different in matters of RAM paging.

    And, Cyborg, yes ...
    GOC GOC November 2003 Development
  • 128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…

    ... to be used to page RAM, which from BASIC would be ...
    Battle Bunny Battle Bunny August 2011 Sinclair Basic
  • SimCoupe 1.0 released[size=-2](for those of you that don't read CSS)[/size] SimCoupe, the SAM Coup? emulator, has been updated to version 1.0. This major release adds ma…

    ... SAM mouse movements
    - Improved RAM, paging, CLUT and CPU register power ...
    obo obo July 2006 Emulators
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    ... 128kB,512kB or 1MB ram
    + paging port #7FFD at ... 512kB / Pentagon 1024kB)
    + ram page 2 is mirrored to ... br /> [B]+ all external ram pages are fast (ULA no ... )[/B]

    - paging port #7FFD can't select ... is used.
    - ram page 5 is not mirrored ...
    velesoft velesoft March 2011 Hardware
  • DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…

    ... divide system.

    Divide ram paging bits on port #E3 (write ... similar paging mode, but can select up to 16 ram pages ... system.

    Divide ram paging bits on port #17 (write ... for this 128kB paging port very easy:
    - Paging port adress # ...
    velesoft velesoft June 2013 Hardware
  • +3DOS questionIn the documentation for the +3DOS functions 'DOS GET 1346' and 'DOS SET 1346' it's stated that the copy buffer can't be bigger than 4 sectors (i.e. …

    ... of some of the extended RAM paging schemes available on the +3 ...
    The_Bert The_Bert February 2014 Sinclair Miscellaneous
  • +2 Gray ProblemI'm trying to repair a +2 gray that behaves differently at every boot up. Some rare times I can get the selection window but pretty soon the characte…

    ... containing Paul Farrow's 128k ram testing program. New Z80 tested ... Data Line 5[/b]" at RAM Bank 0 and 2 and ... -FFFF.
    Also the message "RAM Paging Works Correctly" at the bottom ... must be on the contended RAM part since its causing visual ...
    gtsamour gtsamour May 2016 Hardware
  • New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…

    ... the 3DOS ROM routines and RAM paging to load the snapshot from ... initially just used the standard RAM pages but noticed some games ...
    TomD TomD May 2019 Development
  • New Version of ZEsarUX v9.3 Beta 1 availableNew Version of ZEsarUX v9.3 Beta 1 available Downloads: [url="https://github.com/chernandezba/zesarux/releases/tag/9.3-25062021"]https://github.co…

    ... )
    Added Automatic Snapshots to RAM + Rewind feature
    Added new ... /> Added Jupiter Ace 51 KB RAM emulation
    Added GUI styles ... tbblue port 123b behaviour: 48kb ram paging, shadow display, 3bit offset, read ...
    Luzie Luzie June 2021 Emulators
  • ZEsarUX 10.0ZEsarUX 10.0 is out! Download it from : https://github.com/chernandezba/zesarux/releases/tag/10.0 Changes: Version 10.0 - Clive Sinclair edi…

    ... features: Automatic Snapshots to RAM + Rewind feature, backwards ... /> Added Automatic Snapshots to RAM + Rewind feature
    ... snapshot-inram-load: Loads the RAM snapshot from position
    ... port 123b behaviour: 48kb ram paging, shadow display, 3bit offset ...
    chernandezba chernandezba October 2021 Emulators
  • Spectrum helpHello all I run a website which is some sort of community/game information hybrid. It's dedicated to most gaming platforms (currently 62 of them). I…

    ... time linearly address that extra RAM. The 128k models page the ... top 16k of RAM and the bottom 16k of ... 's even have full 64k RAM paging modes.
    Apart from this ...
    cyborg cyborg November 2002 Games
  • handbook for newbies ?looking at questions what regulary appears on this forum i have an idea. why not to write short book for newbies. if few experienced coders write eac…

    ... into AY, video rams, and ram paging, various other things you can ...
    Sadako Sadako April 2004 Development
  • 8 BIT WARSwhen 8bits ruled the home market Speccys, C64 and Amstrad were the big 3 fighting it out for supremecy.... but they didnt survive which as we know wa…

    ... , a much less haphazard ROM/RAM paging setup capable of addressing much ... CPC+ has had it's RAM cranked up and the floppy ...
    AndyC AndyC September 2004 Games
  • 8 BIT WARSwhen 8bits ruled the home market Speccys, C64 and Amstrad were the big 3 fighting it out for supremecy.... but they didnt survive which as we know wa…

    ... , a much less haphazard ROM/RAM paging setup capable of addressing much ...
    b00mzi11a b00mzi11a September 2004 Games
  • More RZX fun and gamesHi guys, as you may or may not be aware, xmikex and myself have been submitting recordings to Daren's archive for quite some time now. We still have …

    ... that it's the 128k RAM paging at fault there - we currently ... reload back to the wrong RAM pages, and therefore the keyboard ...
    Dunny Dunny March 2005 Games
  • Questions from the new owner of a grey Spectrum +2I managed to pick up a grey Spectrum +2 off of ebay with cheap shipping (I'm in the US... it was $13 total and it has a Donkey Kong tape inside) and …

    ... IDE interface and extra onboard RAM, which can run the ZXVGS ... ) is aliased to the 128K RAM paging port (7ffd) so some modification ...
    glancaster glancaster September 2006 Hardware
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... with $FF (causing some bad RAM paging)...

    I tried setting ...
    Jmk Jmk December 2006 Games
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... with $FF (causing some bad RAM paging)...

    I tried setting ...
    Ivanzx Ivanzx December 2006 Games
  • BBC microI was often made aware by people at the time that the beeb was the "best computer in the world." Even my next-door neighbour ( who was a bit of a co…

    ... graphics modes of course, proper ram paging system etc.
    guesser guesser March 2008 Chit chat
  • Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS) -------------------- In the +3, we have crammed in more than twice the amount of memory…

    ... the contention of the "normal" RAM paging, with a screen at 16384 ...
    mjwilson mjwilson March 2008 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…

    ... as system variables. Changing the paging routines will lead to a ... that's used for ROM/RAM paging on the 128 models. This ... $7FFD which disables any further paging requests.

    9) ... extra paging possibilities. In particular it allows you to page RAM in ...
    Jimmy Jimmy June 2008 Games
  • RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…

    ... and 15 reset will cause paging.

    [QUOTE] ... br /> No RAM paging, but always fixed 48k RAM starting at address ... 0 of 0x1ffd puts RAM at 0x0000 to 0x3fff ... number of the selected RAM page (0..31)?[/QUOTE ... number of the selected RAM page (0..63)?[/QUOTE ...
    Philip Kendall Philip Kendall June 2008 Hardware
  • RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…

    ... and 15 reset will cause paging[/QUOTE]
    Interesting. That means ... XXXX XX0X have the same RAM paging functions as 0111 1111 1111 ... I was concentrated to the RAM switching.

    I will ...
    clausjahn clausjahn June 2008 Hardware
  • 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…

    ... +3's or Sam's RAM paging).

    I take it ...
    Jmk Jmk November 2008 Development
  • Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....

    ... , no scrolling... Just you, some RAM and a good old Z80B ... , it gave you a lovely RAM paging system to compensate! ;)
    Chris Pile Chris Pile May 2009 Chit chat
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... BASIC because 128K BASIC swaps RAM pages and on the next ... />
    Not checked the 128K RAM paging though to see if this ...
    BloodBaz BloodBaz May 2009 Development
  • Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....

    ... , no scrolling... Just you, some RAM and a good old Z80B ... , it gave you a lovely RAM paging system to compensate! ;)[/QUOTE]
    DavidB DavidB May 2009 Chit chat
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... BASIC because 128K BASIC swaps RAM pages and on the next ... />
    Not checked the 128K RAM paging though to see if this ...
    joefish joefish May 2009 Development
<1234567…34>

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Related Threads

  • Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS)<br /> <br /> --------------------<br /> In the +3, we have crammed in more than<br /> tw…
  • RAM paging and port usageDear users and developers,<br /> <br /> I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especi…
  • RAM PagingCan anyone shed some light as to how RAM paging actually works, at a hardware level (so not POKE xxxxx stuff). I know about CE and OE lines on DRAMs …
  • 128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…
  • Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code:<br /> <br /> [CODE]<br /> ;; ram-check<br /> L11DA: LD H,D ; Transfer the top value to the HL registe…
  • Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all,<br /> <br /> I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy …
  • How do I know the RAM size?Just left my parents after cleaning out my pile of old stuff in their basement.<br /> Know what I found? My old ZX Spectrum.... Those were the days!<…
  • Paging questionI've a question regarding paging on the Spectrum 128K, +2, +2A, +3, etc, etc. Suppose we are running a program in the page that happens to be.. well,…
  • 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 …
  • Tough paging questionOK... Take this:<br /> <br /> 1. We have a program compiled and run from within GENS under a Pentagon 128K environment.<br /> 2. The program works pe…

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