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  • ISO ROM 128 with TR-DOS 5.05(cz)This is new correct version of ISO ROM for ZX + BETADISK. Some extra basic command is designed specially for use in conmination with TR-DOS 5.05(cz).…

    ... To burn into an EPROM and put into a ... ROM 128 (file [B]iso-rom-03-2010(port239disable).rom[/B]) is 32kB rom ... be in 32kB eprom chip. ROM 0 is replaced ... hardware, only need rom paging support as on ... info/documentation for this ROM not exist. Only unofficial ...
    velesoft velesoft April 2010 Sinclair Basic
  • EPROM servicesAnyone ever heard of these people?. I bought a Spectrum add-on from ebay recently. There is an edge connector splitter, i.e. enables you to plug tw…

    ... to physically replace the ROM with a CMOS EPROM and fix NMI ... that way?. Especially if the soft ROM ...
    alien8r33d alien8r33d May 2010 Hardware
  • EPROM servicesAnyone ever heard of these people?. I bought a Spectrum add-on from ebay recently. There is an edge connector splitter, i.e. enables you to plug tw…

    ... if you replace the physical ROM (which needs desoldering, as it ... many games that checksum the ROM or check for modified NMI ... sort of interfacing project. The ROM being soldered in is not ... pair of tweezers. With an EPROM programmer it can easily be ...
    alien8r33d alien8r33d May 2010 Hardware
  • Ant Attack - video interview with Sandy WhiteBack in 2008 Sandy White came to the Fusion 08 event that many of you attended. There was a film crewe present for Thorn EMI - the arm that sponsored…

    ... ], and used that as an EPROM emulator (pretty cool setup for ... is: Spectrum would see a ROM, edit its hex contents on ...
    RetroTechie RetroTechie May 2010 Games
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... sure is on the +3 Rom. Because the same chartacter ... />
    Either ther +3 ROM sets its own charactertable where ... defined or the +3 ROM sets the UD temporarely to ... trick in my ZX-PC Eprom where in the (c)- ... with a UDG-set in ROM and a new printroutine ...
    Dr BEEP Dr BEEP June 2010 Sinclair Basic
  • testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…

    ... a ROM I wrote that can be blown onto an EPROM and ... I can always dump the EPROM again.
    You still need ... .

    Between the diagnosis ROM, and testing for voltages, you ...
    Spirantho Spirantho June 2010 Sinclair Miscellaneous
  • +3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…

    ... wanted a way to upgrade ROM versions without using UV to ... (I don't own a EPROM eraser).

    It seems ... reading it as the +3 ROM. So I supose that wiring ...
    Zup Zup June 2010 Hardware
  • +3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…

    ... wanted a way to upgrade ROM versions without using UV to ... (I don't own a EPROM eraser)[/QUOTE]
    If you ...
    RetroTechie RetroTechie June 2010 Hardware
  • Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …

    ... ;462757]Internal memory in flash eprom chip is organised as 16kB ... .[/QUOTE]

    If the ROM you flash is corrupted then ... you flash a non-bootable ROM ... etc.
    chev chev August 2010 Hardware
  • Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …

    ... ;462757]Internal memory in flash eprom chip is organised as 16kB ... reprogrammable.[/QUOTE]

    the rom sectors can't be protected ...
    guesser guesser August 2010 Hardware
  • Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …

    [QUOTE=guesser;462783]the rom sectors can't be protected/ ... ]

    I know. FLASH EPROM can be protected on true ... flash eprom , but with 4x bigger capacity 512kB = 8x 64kB rom image ... you use only 128kB flash eprom ? Price of 512kB version is ...
    velesoft velesoft August 2010 Hardware
  • Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …

    ... you use only 128kB flash eprom ? Price of 512kB version is ... original idea was just a rom replacement, the ability to use ...
    guesser guesser August 2010 Hardware
  • ZX48K 128K modHas anyone make this mod to the ZX48K? Does it work? [URL]http://hw.speccy.cz/128krebuild.html[/URL] Micky

    ... including the AY, a 32KB EPROM, and putting all the logic ...
    1 - Bugfixed BASIC ROM with keypad routines
    2 ... /> 3 - Original Spectrum ROM
    4 - ZX80 emulator ROM
    5 - ZX81 ... emulator ROM
    6 - Jupiter ...
    chev chev August 2010 Hardware
  • ZX48K 128K modHas anyone make this mod to the ZX48K? Does it work? [URL]http://hw.speccy.cz/128krebuild.html[/URL] Micky

    ... ?[/QUOTE]

    Starting rom with configuration menu:
    [img ... 512kB FLASH EPROM chip (similar as on DIVIDE PLUS rom)
    ... ). Exist also TR-DOS rom versions with 1MB ramdisc support ... + memory emulation or ZX rom emulation or DIVIDE memory emulation ...
    velesoft velesoft August 2010 Hardware
  • Romsif I wanted to replace the roms on a speccy, what equipment would I need and what chips, for example let's say I wanted to replace my +2a roms with t…

    ... +2a roms with the SE rom?

    or could someone ... could use my new flash rom board... :) coming soon!

    eprom programmer
    guesser guesser August 2010 Hardware
  • Romsif I wanted to replace the roms on a speccy, what equipment would I need and what chips, for example let's say I wanted to replace my +2a roms with t…

    [QUOTE=guesser;465818]on a +2a or +3 you could use my new flash rom board... :) coming soon!

    or just a pair of eproms and and an eprom programmer[/QUOTE]

    hurry up then!!!!

    :p
    BiNMaN BiNMaN August 2010 Hardware
  • ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…

    ... emulate rom flashing or install divide systems from 512kB flash eprom. After ... PLUS or any other hardware. Rom flasher is free software (not ... clone ATM with extra trdos rom with software emulation of FDD ...
    velesoft velesoft August 2010 Development
  • Booting with a programIf you ever had a VTX-5000, you'll remember it booted to a menu. The menu itself was written in BASIC. When the Spectrum initialized, this BASIC prog…

    ... -CHAR) and re-entering the ROM just after where the call ... itself is just to signal "ROM done initializing", and modules can ... you just investigate the MB02 Eprom which is available here:
    Speccyman Speccyman August 2010 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…

    ... -RAM
    * 16 kB EPROM or flash ROM
    * real time clock ...
    ingo ingo September 2010 Hardware
  • 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…

    ... =ingo;473518]* 16 kB EPROM or flash ROM[/quote]
    Only 16kB ... + support up to 512kB rom (or flash eprom - exist flashing software for ... mode in full configuration 512kB rom+512kB ram and support up ...
    velesoft velesoft September 2010 Hardware
  • 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…

    ... + support up to 512kB rom (or flash eprom - exist flashing software for ...
    ingo ingo September 2010 Hardware
  • DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…

    ... use IM2 vector in ZX rom. But +2A/+2B/+3 models ... use modified ZX rom and some games crash. You ... internal rom chips with flash eprom and reflash +2B rom with rom from original ...
    velesoft velesoft September 2010 Hardware
  • DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…

    ... use IM2 vector in ZX rom. But +2A/+2B/+3 models ... use modified ZX rom and some games crash. You ... internal rom chips with flash eprom and reflash +2B rom with rom from original ...
    daznic daznic September 2010 Hardware
  • Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…

    ... need first to dump full ROM image for backup, but I ... for backup original 512kB flash eprom to TAP file (in RESIDOS ...
    velesoft velesoft September 2010 Hardware
  • Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…

    ... .

    27128 = standard 16K EPROM, will do everything EPROMs can ... 8K of ROM which could reside in a 2764 type EPROM. A ...
    roko roko October 2010 Hardware
  • Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…

    ... /> Should it really be the eprom, where is a new one ... Opus Rom anywhere to download so I could use an eprom device ...
    Skydiver Skydiver October 2010 Hardware
  • ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…

    ... emulate rom flashing or install divide systems from 512kB flash eprom. After ... PLUS or any other hardware. Rom flasher is free software (not ... clone ATM with extra trdos rom with software emulation of FDD ...
    -Micky -Micky November 2010 Development
  • Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…

    ... press "x" (erase flash rom sector) and in next ... erased rom pages 24-27 on DIVIDE PLUS eprom chip.
    rom in rom page 27.
    - ... start new ZX rom with text "ZX48 rom for DIVIDE PLUS ... divide systems in 512kB rom chip in your DIVIDE ...
    velesoft velesoft November 2010 Hardware
  • ROM interface add-ons?Is there a summary description of various ROM interface add-ons, listing things like number of multiple ROMs holdable, compatibility with Interface 1…

    ... a summary description of various ROM interface add-ons, listing ... PROFI INTERFACE can use flash eprom (rewritable) up to size ... any part of 512kB rom as ZX rom replacement or can ... emulate rom with write protected external ram pages. Exist internal flash eprom ...
    velesoft velesoft November 2010 Hardware
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