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Search Again :: Adv Search 1000 results in 0.020s
<1234567…34>
  • 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)
    ... />
    EEPROM AT28C64B (with write protection feature ! )
    [url] ... prod_documents/doc0270.pdf[/url] (page 10)
    [img ... ). If will use write protect feature then eeprom will ...
    velesoft velesoft March 2009 Hardware
  • 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
  • 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…

    ... ram page with write enable, 65 = second ram page with write enable, 0=page 1 with write protect, 1= page ... 2 with write protect)
    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…

    ... systems/memory - each rom page in row3 contain divide system ... with divide system is in write protect ram area)
    - rom ... 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
  • 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…

    ... mode.
    (everywhere fast ram)
    Page switch via 7FFD, like on ... 23 say, which number of RAM page should be connected
    instead ... only the page 8 is set for ALLRAM. (above ZX128 RAM)
    WRITE PROTECT for
    ALLRAM and two ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • 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 char ... 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 ... as ZX128
    - page 5 is additional page, not mirrored to adress ... space 16384-32767
    - page 2 is morrored to adress ... second ZX videoram, page 7 is used only as ram
    - in ...
    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…

    ... . Only page 3 can be paged from 0-8191 with write protect(if ... mode. In this mode ram page 3 with write protect are used instead 8kB ... you select ram page 3, then this ram page is write protected (bacause ram 3 contain ...
    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)
    2 ... )

    --------------------------
    ROM and RAM in More Detail
    --------------------------
    page 7 so it suxx)
    bverstee bverstee October 2015 Hardware
  • 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…

    ... in write protectable RAM, whereas divIDE prefers to only page its own RAM in ... ZXCF would be a "Permanent Write Protect" bit, a little like bit ... ZXCF memory would become permanently write protected until the next reset ...
    MikeW MikeW April 2006 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…

    ... is set MB rom page 0 + write protect (OUT 23,BIN 10000000 ... )
    Afterr NMI is set MB ram page ... 0 + write protect (OUT 23,BIN 01000000 ... then is possible write to BS-ROM(page 0) instructions PUSH ...
    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, is ... can't return to correct ram page). This feature enable read value ...
    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 example you ... to same adress in divide ram page + rewrite all JP and ... possibility change/modify routines for write commands in 128 basic.
    write protect !!! All 16kB (0-16384) can be set as 16kB RAM page ...
    velesoft velesoft January 2009 Hardware
  • 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
    ;
    LD ... b]
    Each MB02 ram page used with GASWARE must ... always set with write enable. Only ram page with modified 48rom ...
    velesoft velesoft September 2009 Development
  • MB02+IDE aliveLast weekend I finished soldering and testing my MB02+IDE. All items work perfectly on +2 grey, on +2A, on 128k heatsink and on 48k Issue2 and 3b tes…

    ... can contain software switch to page with NMI menu.... It' ... jump to BS-ROM with write protect to adress #66. It' ... other systems out of MB ram 0 ! Also BS-DOS ... always to master system in ram 0 ( can be BS ... adress #00 in actual MB02 page. DivIDE plus, my MB02 ...
    velesoft velesoft September 2010 Hardware
  • DIVIDE - source code of new FATWARE 0.14[B][U][SIZE="5"]Source code of FATware system is now free.[/SIZE][/U][/B] BAZE (author of FATWARE) release source code of last version FATWARE 0.14 …

    ... classic rewritable ram (in this mode is impossible set write protect in adress ... /> OUT (227),A ;set divide ram page 3 for connect from adress ... of custom rom to divide ram page 3
    LD A,128 ... /> OUT (227),A ;set divide ram page 2 for connect from adress ...
    velesoft velesoft May 2011 Hardware
  • Price For A TR-Dos Drive And Interface?hi all im seriously considering getting a tr-dos unit to to use with my various spectrums and was wondering wot sorta price they go for and would be…

    ... ram page 1
    d) 8kB ram page 0(write protect) + 8kB ram page 1(write protect)
    e) 8kB ram page ... 2 + 8kB ram page 3 ...
    velesoft velesoft September 2011 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... 32x 16kB ram pages instead rom (rewritable or with write protect). Also 128rom ... can be emulated in extended ram 1MB ... as always rewritable ram (poke 49152,0 write byte 0 to ... in ZX basic to extra ram page and after active rom ...
    velesoft velesoft May 2012 Hardware
  • Gyruss rom versionIs is possible to make a "program" from the Gyruss rom version? Micky

    ... A,3+32+128 ;page 3 RAM with write protect
    OUT (250),A ...
    Stefan Drissen Stefan Drissen February 2013 Sinclair Miscellaneous
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ... 10000000 = connect rom page 0 with write protect)
    - after press ... BIN 01000000 = connect ram page 0 with write protect) and CPU jump ... 10000000 = connect rom page 0 with write protect)
    - if D7 ... (23),A ; connect ram page 5 with write enable
    LD ...
    velesoft velesoft August 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... (allram - 512kB ram/flashable rom 512kB. Each rom/ram page 16kB can be ... used also with write protect), and one ...
    velesoft velesoft October 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... (allram - 512kB ram/flashable rom 512kB. Each rom/ram page 16kB can be ... used also with write protect), and one ...
    chev chev October 2013 Hardware
  • New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…

    ... /> 16kB rom/ram switching in ZX rom area. Selectable write protect. Low 16kB ... block can be rom or ram page. Access to full 512kB sram ...
    velesoft velesoft January 2015 Hardware
  • 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 …

    ... , so to do a simple RAM page swap, all I want to ... bits 0-2 accordingly, then write the new value back out ... page number
    LD BC,32765 ;Set BC to 32765 for write ...
    OUT (C),A ;Write new value to ...
    trellis trellis August 2003 Sinclair Basic
  • [NEW]: Spectaculator 6.0Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows 95, 98, ME, NT 4, 2000 and XP. Spectaculator emulates the 16K/48K/128K/+2/+…

    ... . Disk images
    can be write protected, formatted, ejected and inserted ... tab
    on the options page). Useful for Speccy Tour competitors ... memory or a
    specific RAM page.

    o Fixed the ...
    Jon Needle Jon Needle December 2003 Emulators
  • Alternative ROM on original DivIDEOriginal DivIDE interface contain too allram mode (16kB paging). [url]http://raww.org/index.php?name=News&file=article&sid=2471[/url] Switch to ALLR…

    ... page 0 with write enable
    OUT 227,0 = set page 0 with write protect ...
    OUT 227,65 = set page 1 with write ... enable
    OUT 227,1 = set page 1 with write protect ... (227),A ;page 0 + write protect
    EI< ...
    velesoft velesoft 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…

    ... 8 RAM pages, which is paged at C000..FFFF.
    page 5 ... 8 RAM pages (RAM 0..RAM 7) is paged at address C000..FFFF, page ... the number of the selected RAM page (0..31)?

    Pentagon ... the number of the selected RAM page (0..63)?

    Hopefully ...
    clausjahn clausjahn June 2008 Hardware
  • So... you want to format your 3.5" as 720K eh?Well, i've been trying to get hold of an application to make proper use of my 3.5" +3 floppy disks but i haven't been able to find any. I stumbled up…

    ... LD IY,358 ; Signal DD WRITE SECTOR
    CALL DISK ; Call ... the subroutine in ROM and write the data to disk< ... /> LD A,16 ; Page ROM 0 and RAM PAGE 6
    LD ( ...
    NaMcO NaMcO December 2008 Development
<1234567…34>

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