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<1…16171819202122…34>
  • Sinclair 128K+ Rom dead?While repairing one of these boards my mind was elsewhere and I put the rom back in the wrong way round and now it doesnt work (scrambled screen) alt…

    ok when i said proper rom i meant proper version for the computer its in. ie. proper working eprom containing proper rom image that i recently seem to have destroyed.:oops:
    ZX-MAD ZX-MAD April 2008 Hardware
  • ARRRGH! Forgotten how to use the Z88!The shame of it! I've decided to have a mess around with the Z88, was going to install the latest 4.2 OS and I've forgotten how it works! Ok, maybe …

    I've found my PC LINK ROM cart but can't find the PC software. I think it's still on 5.25" disk!

    Thankfully I found an eprom with XY-MODEM on it and that's working.
    alchresearch alchresearch May 2008 Sinclair Miscellaneous
  • Prism VTX 5000 ModemI just got one of these but how do you use it? I dont have a manual and a review i read of it says you turn on the spectrum and the software automati…

    ... up and it has an eprom similar to the spectrum 128k ... . When i pull the eprom out (with the spectrum off ... this one is a proper rom or whatever else it could ...
    ZX-MAD ZX-MAD May 2008 Hardware
  • 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…

    ... why I replaced the +3 ROM's with two +2 (grey ... ) ROM's ... still have the 128k ... that got me experimenting with eprom burners and things...

    ROM - so MUCH more compatible).
    thingley thingley June 2008 Games
  • 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…

    ... that got me experimenting with eprom burners and things...

    ROM - so MUCH more compatible).
    Tom-Cat Tom-Cat June 2008 Games
  • Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …

    ... /> I then inserted the ROM into my EPROM-programmer, and it reports ... that the ROM only contains ... report as empty.
    The ROM can not be successfully erased ... /> If anyone know any replacement ROM type, then feel free to ...
    Pilsener Pilsener August 2008 Hardware
  • Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …

    I hope it is the EPROM. The only thing that makes ... the problem is that the ROM is only paged in at ... shouldn't matter what the EPROM contains as it hasn't ...
    Jimmy Jimmy August 2008 Hardware
  • Official release of new K-MOUSE 2008 interface[url]http://velesoft.speccy.cz/kmturbo2008-cz.htm[/url] This is official release of new K-MOUSE 2008 interface. New layout, design, new schematic. …

    ... to 512kB sram and 128kB rom. And exist version of RESIDOS ... 512kB (628512)
    2)FLASH EPROM 128kB (at29c010)
    3)GAL22V10 ... 512kB)
    Software controll of EPROM jumper(JP2)
    Possibility reset ...
    velesoft velesoft August 2008 Hardware
  • Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …

    ... I hope it is the EPROM. The only thing that ... the problem is that the ROM is only paged in ... shouldn't matter what the EPROM contains as it hasn' ... it says that the Opus ROM is paged in every ... $0048 ). This explains why the EPROM would affect the machine before ...
    Jimmy Jimmy September 2008 Hardware
  • Using a QLI have the opportunity to pick up a QL in distress, having never even set eyes on one before I am not sure how much fun there is to be had with them.…

    Can you post a picture - I have a feeling it is where the chip went for the early EPROM versions of the ROM - it was removed in an upgrade....
    rwap rwap October 2008 Hardware
  • Self Test Suite for +2I'm sorry if this has already been discussed before, I searched the forum but couldn't find any info: are there any test software to test +2 and get…

    Paul Farrow's 128 test ROM is just awesome but you ... to write it on an eprom and either plug it on ... +2's (gray or heatsink) rom place or use an interface ... a cart (plug the test rom on the cart).
    I ...
    gtsamour gtsamour October 2008 Hardware
  • 16K Rom with RS232 supportHi all, I am looking for a 16K Rom-code (to fit into the speccy) which supports RS232 and Network of IF1. Background: I am using 48K Issue 3 with W…

    ... a lot about paging in ROM and trap handling.
    Rom can paged in and out ... stored in the Flash Eprom on my Diag board.< ... mange to change Peras ROM code. Also I think ... have read your diag board rom source code?

    maskenlos maskenlos November 2008 Hardware
  • Multiface ONE vs Multiface 128Hello, Bit of a silly question here, but i couldn't really find any information about this. I have a Multiface ONE and if try to replace its EPROM w…

    Well, guess i'll have to try. The ONE has an EPROM which i will be erasing today to try the 128 ROM on it, i'll post the results later on :-P
    NaMcO NaMcO November 2008 Hardware
  • 4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?

    ... this Speccy
    * Replace ROM with CMOS EPROM (if average current is ...
    RetroTechie RetroTechie December 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…

    ... 2048 use compatible ZX48 rom but TIMEX 2068 use ... incompatible modified rom 24kB = incompatible computer ... software = unusable without modifications(rom replacement). If any ZX ... can use TIMEX eprom cartridge with ZX rom for best compatibility ...
    velesoft velesoft January 2009 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…

    ... the EPROM connector too. And prefer FLASHRAM.
    Method for ROM management ...
    roko roko January 2009 Hardware
  • Is the original divIDE compatible with Interface 1Is the original divIDE hardware compatible with Interface 1 ? I would like to use the divIDE and Microdrives connected at the same time. Is this pos…

    ... RST 8 connect IF1 external eprom 8kB in area 0-1FFF ... ?

    Divide connect external rom memory if CPU go to ...
    velesoft velesoft January 2009 Hardware
  • Defmir and Divide+Hi, I have following configuration: Zx Spectrum+ 48K DivIDE+ with Firmware Selector Demfir 0.7b CD-ROM Unit (CDR-8322B) jumpered as master device I…

    ... ways:

    1) Use ROM image (demfirXXXX_E.bin) and burn ... 's permutor to EPROM
    or use some universal ROM installer and ... install it to FLASH ROM of divIDE.

    2 ...
    dg67 dg67 March 2009 Hardware
  • Re: TS2068 TC2068 Specy emulator cartridgesThere are several designs of emulator cartridges for these two Timex clones, but they all require an original 48K rom to work. This brings up a few q…

    ... about the original 48K rom or eproms or eprom burners. They would ... cartridges once with the 48K rom, or flash it as many ...
    zxbruno zxbruno March 2009 Hardware
  • Very simple 128k memory test?Just an idle thought, but... If on a 48K machine: [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B] [/INDENT]yields the last reliable RAM address, …

    ... for that, there is a ROM that tests all RAM of ... either flash it on an eprom and plug it onboard in ... of the machine's original ROM or you can use it ... as an interface II rom cart (thats what i did ...
    gtsamour gtsamour April 2009 Hardware
  • Very simple 128k memory test?Just an idle thought, but... If on a 48K machine: [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B] [/INDENT]yields the last reliable RAM address, …

    ... for that, there is a ROM that tests all RAM of ... Paul, or
    (b) source EPROM & blower which I haven ...
    szeliga szeliga April 2009 Hardware
  • Very simple 128k memory test?Just an idle thought, but... If on a 48K machine: [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B] [/INDENT]yields the last reliable RAM address, …

    ... .

    As for the eprom flashing, you just need a ... 27C256 eprom which is very cheap and ... the cart to put the eprom on.

    But ... job with just the flashed eprom. The rom chips on 128 machines ... replace it with the testing eprom.
    gtsamour gtsamour April 2009 Hardware
  • !!! Trdos Emulation On Zx !!![B]This is software emulator of TRDOS(betadisk). Yet is writed only for interface MB02+, but will ported to more other IDE interfaces with external r…

    ... FLASH, normally 32kB EPROM serving as boot rom to load OS
    ROM (called BSROM)
    - RTC chip ... any program that is calling ROM TAPE LOAD and SAVE routines ...
    omega omega May 2009 Development
  • Multiface 128 Disassembly questionI was looking at a disassembly from a Multiface 128 rom, now I'm not a coder so I have a question, am I correct in understanding the code starts at #…

    ... disassembly from a Multiface 128 rom, now I'm not a ... not at #0 in the eprom because of the NMI after ... instruction in the Spectrum 48k ROM is also PUSH AF. I ... from the Spectrum ROM rather than the Multiface ROM, and therefore had ...
    John Elliott John Elliott May 2009 Development
  • I need to buy a modemPreferably one that will fit into my PCI slot, and necessarily one that doesn't require Windows (I'll be using it on my Linux box for remote logins..…

    ... days, everyone uses flash for ROM rather than memory that can ... be programmed in system like EPROM.
    Winston Winston May 2009 Chit chat
  • Rom upgrade(s) for the Humble spectrum +2 (not 2a or 2b)Hello there my fellow forum chummies, I was thinking today, after reading all this lovely rom burnery stuff, is there a way I could update the ROM o…

    ... replaced with any other ROM in external eprom/sram memory. But original ... ZX128 rom must use different paging ...
    velesoft velesoft June 2009 Hardware
  • ZX Spectrum 48K firmwareCan somebody tell me in which IC the firmware is located. I mean which IC holds the "Error Codes" ? I have a Spectrum which give the Error Codes in s…

    ... is not a ordinary ROM - but an EPROM :-(
    Maybe the print ...
    Tommy F-H Tommy F-H June 2009 Hardware
  • More 1-bit music from Mr BEEPGot an e-mail this morning but didn't see a thread, so here it is: [url]http://berlin_hq.micromusic.net/bhack.html[/url] [QUOTE]BHQ001 MISTER BEEP …

    ... burn the eprom with a copy of the Spectrum 48K rom. If ... you don't have an eprom burner you ...
    zxbruno zxbruno June 2009 Sinclair Miscellaneous
  • Speccy +2 (Grey) peripheralsHello all, I have just bought a grey +2 to use as a workhouse whilst I keep my 128 toastrack for Sunday best. It hasn't arrived yet, however I was wo…

    The ROM is socketed and fairly easy ... remove and replace with an EPROM. Various technical bods on the ... to source an EPROM and burn the SE ROM set to it ...
    chev chev June 2009 Hardware
  • ZX Spectrum 48K firmwareCan somebody tell me in which IC the firmware is located. I mean which IC holds the "Error Codes" ? I have a Spectrum which give the Error Codes in s…

    ... is not a ordinary ROM - but an EPROM :-(
    Maybe the print ... to replace with an English Eprom.
    What is written on ... the Eprom?
    I can send you ...
    Cameraman Cameraman June 2009 Hardware
<1…16171819202122…34>

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eprom 1.4K 2.2K

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