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Search Again :: Adv Search 1000 results in 0.018s
<1234567…34>
  • disk write protect on Spin ?Is there an option for Spin to default a (loaded) disk to be write protect ? I whish I have no worry when loading a perfect original disk to convert …

    ... a (loaded) disk to be write protect ?
    I whish I have ...
    secarica secarica October 2002 Emulators
  • RESIDOS and WRITE PROTECT IDE DEVICEI use DIVIDE interface with SD2IDE adapter + SD card. This adapter work with SD card in TRUE IDE mode. All work correct, only if on SD medium is set …

    ... memory card is read only (write protect). RESIDOS work in writeprotect mode ... incorrect, can't write to medium and print bad ...
    velesoft velesoft April 2008 Development
  • Divide Eeprom - Write Protect FeatureDivIDE interface can contain two types of eeprom chip: EEPROM AT28C64 (without write protection, always rewritable) [url]http://www.atmel.com/dyn/re…

    ... :

    EEPROM AT28C64 (without write protection, always rewritable)
    [url ... />

    EEPROM AT28C64B (with write protection feature ! )
    [url]http ... unprotected (default). If will use write protect feature then eeprom will read ...
    velesoft velesoft March 2009 Hardware
  • Issue 1 16K RAM bankFolks, I recently had a chance to fix a couple of Issue 1 boards, and learned the hard way that the chips in the 16K RAM bank have a different place…

    ... the chips in the 16K RAM bank have a different placement when ... from 2 up have the ram chips lined up the most ... meaningless reports from the Fruitcake RAM tester, I finally checked all ...
    Falco-F8L Falco-F8L January 2015 Hardware
  • DRAM without powerSomething interesting I noticed last night, after making a bad Spectranet ROM image which crashed the machine... Looking at the image on the screen,…

    ... /> Setting MAPRAM to '1' write protects RAM bank 3 and enables it to ... act as ROM. Bank 3 is ... to 0000h-1FFFh instead of bank 3.
    [/QUOTE]

    RST#08 RST#08 May 2009 Hardware
  • Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…

    ... write enable, 65 = second ram page with write enable, 0=page 1 with write protect ... 2 with write protect)
    OUT (227),A - set first 16kB ram page ... 32 ;value 32 = enable write to ram, value 0 = write protect ram
    OUT (23 ...
    velesoft velesoft October 2012 Development
  • 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…

    ... with divide system is in write protect ram area)
    - rom chip ... rom pages are emulated with ram pages in row3...
    - ... each ram page in row3 contain divide system and is write protected ... /> DIVIDE PLUS - 16kB RAM paging mode (all-ram)
    [img]http:// ...
    velesoft velesoft June 2013 Hardware
  • 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…

    ... the detailed timings of contended RAM. It gives timings for Z80 ... in, or reading/writing, contended RAM.

    I can decipher ... wait states before it can write to (DE).

    This ... 48K, or double buffered -- paging RAM bank 7 into a 128K machine ...
    ajmoss ajmoss June 2010 Development
  • Mass storage - why backup battery?I wasn't sure to post this under "hardware" or "development", but here goes: There are these mass storage devices for ZX Spectrum, and on many desig…

    ... be RAM or ROM has nothing to do with how you bank ... switch with a Spectrum. Whether you have RAM, ROM ... program running crashes unless a write protect circuit is added (more components ... copy/erase sector/modify in RAM/write back is easily hidden by ...
    Winston Winston February 2010 Hardware
  • 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…

    ... You up to 1024Kb of RAM.

    _________________________________________
    (everywhere fast ram)
    Page switch via 7FFD ...
    memory area above 128kB RAM)

    - a ... is, of course, also a WRITE PROTECT for
    ALLRAM and ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • 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…

    ... some detail information about RAM paging on the Spectrum ... , TS2068
    No RAM paging, but always fixed 48k ... the first 8 RAM pages (RAM 0..RAM 7) is paged ... the second 8 RAM pages (RAM 8..RAM 15) is paged ... used to select the RAM bank for paging at address ...
    clausjahn clausjahn June 2008 Hardware
  • Testing other ZX roms on DivIDE / DivIDE+This is package of different ZX rom images with DivIDE instalator. Each file contain ROM image at adress 49152 + assembler Prometheus with installati…

    ... low 16kB ram (0-8191 = divide ram3 with write protect, 8192-16383 ... = writeable divide ram 2). Installator copy ... image parallel to divide ram page 1 and modify ... mode 16kB paging with write protect, but this my code ...
    velesoft velesoft August 2008 Sinclair Basic
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... ZX 48 rom to ram memory with write protect
    7) set ZX ... 7 is used only as ram
    - in adress space 0 ...
    velesoft velesoft April 2010 Games
  • Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…

    ... paged from 0-8191 with write protect(if is set eeprom ... ) - write only[/B]
    [CODE]D0-D1 = select divide ram page ... In this mode ram page 3 with write protect are used instead 8kB ... select ram page 3, then this ram page is write protected (bacause ram ...
    velesoft velesoft August 2013 Hardware
  • The history of ESXDOS, the DivMMC and the DivMMC EnJOY![img]http://benophetinternet.nl/hobby/divmmc_history/1%20esxdos.jpg[/img] These are the stories behind esxDOS, the most popular operating system e…

    ... DRAM in ROM-B with write protect feature (Contains OS)
    --------------------------
    ROM and RAM in More Detail
    --------------------------< ... /write sectors, etc, etc, etc)
    - DOS in ram ... , but there are more ram pages available.
    ...
    bverstee bverstee October 2015 Hardware
  • ZEsarUX-7.0Hi! I have uploaded a new ZEsarUX stable version :) This is ZEsarUX 7.0 There are a lot of new features added, more than ever! You can downl…

    ... again!
    Added setting to write protect IDE, MMC, ZX-Uno Flash ... /> Added a setting to dump ram contents to file when exiting ... ZRCP)
    * added function to write byte to file on ZEsarUX ...
    chernandezba chernandezba May 2018 Updates
  • Micro SD card write protection.So I put a 16GB micro SD card in my android phone about 3 years ago. I put 12GB of music on it. So...it works. Then I remembered there is a micro SD …

    ... apps. Well it's saying write only, failed to delete. It ... ...I assume this is digital write protection? There is no manual ... ? How does one remove the write protect. Must I mess around with ...
    Ælita Ælita February 2022 Chit chat
  • online speccyHi Is there a community where speccysts play games online (for example by EmuzWin's NetPlay)? Gal

    ... it would be cool to write a game or two along ... which pages in an extra RAM bank containing a buffer or something ...
    jonathan jonathan June 2005 Games
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... a patched version held in write protectable RAM, whereas divIDE prefers to ... only page its own RAM in when certain points ... ZXCF would be a "Permanent Write Protect" bit, a little like bit ... ZXCF memory would become permanently write protected until the next ...
    MikeW MikeW April 2006 Hardware
  • ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…

    ... Z80) to parse or to write.

    One thought: how ... (eg) writing to a 128K RAM bank which isn't paged in ...
    Philip Kendall Philip Kendall July 2006 Emulators
  • What would you pay for a brand new Spectrum?I wanted to know if there was a market for new hardware, like the DTV-64.

    ... -ish @ 3.5/21MHz 4MB RAM in an AT form factor ... , all 128K RAM, shadowing 16KB or 32KB ROM (write-protect switchable)
    [*][B ...
    Marcelo Marcelo August 2006 Hardware
  • ResiDOS v2.00 releasedI've just posted a major new release of ResiDOS, at: [URL="http://www.worldofspectrum.org/residos/"]http://www.worldofspectrum.org/residos/[/URL] T…

    ... good for 10,000 erase/write cycles.[/QUOTE]

    ... main Spectrum memory into a RAM bank
    [*]Copy the flashing ... into a spare RAM bank
    [*]Copy the 16K bank to be ... main" memory
    [*]Flash the bank
    [*]Restore the saved Spectrum ...
    glancaster glancaster April 2007 Hardware
  • MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…

    ... + write protect (OUT 23,BIN 10000000)
    Afterr NMI is set MB ram ... page 0 + write protect (OUT 23,BIN 01000000 ... not installed, then is possible write to BS-ROM(page 0 ...
    velesoft velesoft April 2008 Development
  • Group Order of Internal/External Kempston Turbo InterfacesI have contact Velesoft ([url]http://velesoft.speccy.cz/kmturbo-cz.htm[/url]) about the production of internal or external kempston turbo interfaces …

    ... port 23 and set ram page 0 with write protect. If RESIDOS is ... install to other MB02 ram pages ... can't return to correct ram page). This feature enable read ...
    velesoft velesoft May 2008 Hardware
  • Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…

    ... In this area is divide ram page(0-3). For ... to same adress in divide ram page + rewrite all ... change/modify routines for write commands in 128 basic.< ... write protect !!! All 16kB (0-16384) can be set as 16kB RAM ... systems. In one memory ram 512kB is RESIDOS+BS-DOS ...
    velesoft velesoft January 2009 Hardware
  • ANN: ResiDOS v2.25 and +3e ROMS v1.38 releasedA major new release of ResiDOS, v2.25, is now available! The most important new features are commands and functions allowing new extended streams an…

    ... possible write RESIDOS version for original DivIDE (32kB ram), but ... of BASIC ROM (eg RAM bank 0 for most interfaces) ... ResiDOS bank).
    [*]ResiDOS bank (1) active.
    [*]BASIC bank (0 ... br /> [*]IDEDOS bank (2) switched in[*]IDEDOS bank either deals with ...
    glancaster glancaster July 2009 Hardware
  • I want a DivIDE but....I need help, I want to get a DivIDE but I need some advice. Which one do I go for DivIDE or RWAPS DivIDE+ (when they become available). Which firmwa…

    ... is it requires battery backed RAM, which can be either cheap ... expensive and reliable. Standard static RAM was never really designed to ... /down the Speccy corrupts the RAM, so it's not really ... of the time, a write-protected BASIC bank is likely to be ...
    glancaster glancaster August 2009 Development
  • The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…

    ... 's MAPRAM feature - leave the write-protect jumper attached when you run ... it'll run from DivIDE RAM until you do a hard ...
    gasman gasman September 2009 Development
  • The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…

    ... mode with selectable write protect. First sram page will write protected and will ... /> ; THIS CODE CONTINUE IN MB02 RAM PAGE 2
    ;
    ... be always set with write enable. Only ram page with modified ... and data in high 8kB ram(8192-16383). This software ...
    velesoft velesoft September 2009 Development
  • detecting 128 mode ?quick question really, someone who programs would know I guess. am I right in thinking some things detect 128 program and adjust accordingly , say i…

    80% of software will write a figure to the top ... 128, then page in ram bank 1 and write 48k to the same ... location, switch back to ram 0 ...
    nuggetreggae nuggetreggae October 2009 Hardware
<1234567…34>

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HitBox

Word Docs Hits
write 16.1K 20.3K
protect 1.3K 1.5K
ram 12.6K 21.4K
bank 3.6K 5.8K

Related Threads

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  • Divide Eeprom - Write Protect FeatureDivIDE interface can contain two types of eeprom chip:<br /> <br /> EEPROM AT28C64 (without write protection, always rewritable)<br /> [url]http://ww…
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