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<1234567…34>
  • 48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…

    ... 27c256 EPROM containing the 48K ROM and a diagnostic ROM ... found of doing the ROM - EPROM replacement, either the diode ... pin 20 of the EPROM or using a ... />
    Sanity check ROM burner (MQP Pinmaster 48) ... gw03 ROM) and diagnostics and that works too. Create ...
    witchy witchy December 2015 Hardware
  • ZX80 Rom and Z80Can you pop a ZX81/TS1000 Z80 in the ZX80 as is and can you burn a rom to eprom and pop in? I'm watching an auction on Ebay and both Z80 and ROM are…

    Can you pop a ZX81/TS1000 Z80 in the ZX80 as is and can you burn a rom to eprom and pop in?

    I'm watching an auction on Ebay and both Z80 and ROM are missing.
    beanz beanz August 2011 Sinclair Miscellaneous
  • Currah uSpeech ROM Paging and BootyHi, When I emulated the Currah uSpeech for [url="http://www.inkland.org.uk/inkspector"]InkSpector2[/url], I made it page in its own ROM on memory …

    ... to enable the uSpeech ROM is this Booty code ... the first 95 bytes of ROM too, as register DE wraps ... $0038 and pages its own ROM in, when the ‘ret’ ... ldir instruction above) the uSpeech ROM is executed. The Z80 ... in the ZX Spectrum ROM which looks like this:
    inky inky October 2019 Hardware
  • 128k Heatsink Serial NumberI just bought a nice 128k heatsink all boxed up. I think it has a low serial, but I am unsure. I cannot find out anywhere how the serial for the 128k…

    ... a spanish 128 with english ROM (No EPROM). The layout on the ... serial number starts with 007 too.
    LCD LCD March 2012 Hardware
  • Hardware damage due to software?<p>I'm not afraid to ask a stupid question, and I find it incredibly easy to do so in the hardware forum!</p><p>Is it possible to damage your Spectru…

    ... does not appear in the ROM or EPROM control lines... So if ... the CPU writes to a ROM address ... , the ROM/EPROM also respond X(
    too surprised if there’s at ...
    zub zub June 2015 Hardware
  • ZX PC InterfaceZX &lt;-> PC Interface Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Installation 2.1) The softwa…

    ... normal ZX Spectrum
    ROM or the EPROM.
    Note: Switching ... to switch between standard ROM and EPROM.
    P0 to ... ROM-routines in the EPROM.

    The EPROM holds the normal SINCLAIR ROM ... the ZX ROM belongs to Amstrad. The EPROM may therefore ...
    Dr BEEP Dr BEEP January 2003 Announcements
  • Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…

    ... start of the 48K's ROM (as opposed to the 128K ... Specific second ROM), the same as PRINT USR ... the Spectrum using the 128K ROM too.

    But what advantages ... it could lock the 48K ROM in place, and do whatever ...
    ewgf ewgf December 2008 Sinclair Miscellaneous
  • Spectrum modficationsThere is a post about Outrun on the games forum, which makes the fair point that the game is playable when you double the speed on an emulator. Other…

    ... do it without rewriting the ROM too, IMO. I think that Mike ...
    Dunny Dunny March 2003 Sinclair Miscellaneous
  • Swedish SPectrum ROM foundFrom a contributor to my inbox: [quote] Went to a flea market today to look for old computers and found a rubber-key Speccy. Didn't really look at i…

    16K ROM = 27128 EPROM.

    You can also ... use a part of the eprom.

    Remember that you ... cannot place an eprom directly in a spectrum, unless ... altered.

    An external eprom can be placed easily.
    Dr BEEP Dr BEEP April 2005 Development
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... different. Now it has LBA ROM too. I need to put some ...
    piters piters October 2006 Emulators
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    48K Speccies use ROM, not EPROM chip. which has 3 lines, ... , if want to put there EPROM, must add some logic circuits ...
    piters piters December 2006 Hardware
  • a dumb question?Well, I have been confused with all these interfaces so I have the following question which will make things clear for me... ;) Is there a "device" …

    ... Flash EPROM in interface - there is a place for couple ROM ... 0000-$3fff, replacing the Spectrum ROM. You can indeed install several ... "%INSTALL" command does. The "%ROM" command allows you to restart ... to the 128K BASIC ROM.

    Flash EPROM doesn't gain ...
    glancaster glancaster January 2007 Hardware
  • Anything good on the Sam Coupe?I've just tried a Sam Coupe and seen two of its headline games/conversions in action - Lemmings and Prince of Persia. Both are excellent. This comput…

    ... did over-sell the fact too, nobody can deny that. And ... likes of the first bugged ROM too, which didn't help!). Thankfully ...
    Quazar Quazar March 2007 Games
  • Spectrum 48K ROMHi Can anybody help I have an Issue 6a Circuit Board which has a faulty ROM Chip. Is it possible to program a ROM Chip with the 48K ROM and fit it as…

    ... which has a faulty ROM Chip. Is it possible ... the ROM [I]can[/I] be replaced with an EPROM, ... magazine about changing Spectrum ROM with an EPROM.
    The article ... select the make of ROM. It could be either ... simply lifted one of the ROM/EPROM pins ( so they don ...
    Marcelo Marcelo April 2007 Hardware
  • Is Ferranti still alive ?And if not......why should there be any restrictions on manufacturing the ULA ?

    ... the other bits of the ROM too rather than just using it ... as a 16K ROM substitute, and an FPGA for ...
    Winston Winston May 2007 Sinclair Miscellaneous
  • ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank

    ... generous offer about the ROM, I really appreciate it ... .
    Just one ROM chip is not going ...
    First things first: The ROM in the Spectrums (most of ... them) is a mask ROM, because it's burned ... Second: To burn the ROM (either EPROM, FLASH or OTP-ROMs) ...
    Marcelo Marcelo May 2007 Wanted
  • ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank

    ... ;189068]First things first: The ROM in the Spectrums (most of ... them) is a mask ROM, because it's burned its ... /> Second: To burn the ROM (either EPROM, FLASH or OTP-ROMs) you ... one do for a speccy rom?
    [url]http://www.willem ...
    gtsamour gtsamour May 2007 Wanted
  • Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…

    ... years ago I changed Spectrum ROM with Eprom 27C128
    and uper ... Eprom and SRAM stack together
    and plug into the original ROM ...
    superfo superfo August 2007 Hardware
  • Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…

    ... years ago I changed Spectrum ROM with Eprom 27C128
    and uper ... Eprom and SRAM stack together
    and plug into the original ROM ...
    DEATH DEATH August 2007 Hardware
  • Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…

    ... lines before they reach the EPROM. So when you read ... than to burn another EPROM to use in the ... extract from such a ROM or EPROM would have:[LIST]
    EPROM map to their corresponding ... actually *does* read the ROM correctly (it has to for ...
    Marcelo Marcelo November 2007 Hardware
  • New tape releases - 128K only?As Jon's new Egg-Head game is 128K only, and splATTR has also evolved into a 128K only game - both due to memory constraints - I was wondering if the…

    ... never looked at the 128k ROM too closely then? There's a ...
    Dunny Dunny December 2007 Games
  • splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…

    ... IM2 tables can be in ROM too -- the rotation table consists of ... of the rotation table in ROM, sp_Initialize() will try to 'create ... rotation table values into the ROM image you create.

    ROM image.

    [quote]
    Alcoholics Anonymous Alcoholics Anonymous December 2007 Development
  • splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…

    ... ) then SPTileArray can be in ROM too with the table pre-initialized ... table is pre-initialized in ROM then you can also do ... globalvariables directory can be in ROM or, if in RAM, should ... as well leave them in ROM because otherwise you're going ...
    Alcoholics Anonymous Alcoholics Anonymous December 2007 Development
  • problem using FRAMES to generate 'random' numbersI realise the pros use bytes from ROM to get their random numbers, presumably because they want to use FRAMES to synchronise the printing and avoid s…

    ... unused areas in the ROM. Since FRAMES is only ... Beep's code increments FRAMES too).

    One ... -random" areas in the ROM too (eg the char set ... but better than the ROM for random number generation ... less expensive than reading ROM bytes using a counter ...
    Alcoholics Anonymous Alcoholics Anonymous March 2008 Development
  • 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…

    ... url]
    An alternative ROM to add to the ... package might be gw03.rom
    [url]http:// ... ]
    and download the ROM from here
    [url ... .wearmouth.demon.co.uk/gw03.rom[/url][/QUOTE]

    rom then I can patch this rom too. DivIDE interface ...
    velesoft velesoft August 2008 Sinclair Basic
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... =Jimmy;296863]Don't be too sure on that! I just ... re-implementation optimisations for the ROM too. In particular, replacing the key ... large speed hit from the ROM scanner, and the scrolling is ...
    obo obo September 2008 Sinclair Miscellaneous
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... re-implementation optimisations for the ROM too. In particular, replacing the key ... large speed hit from the ROM scanner, and the scrolling is ... the tape i/o routines too :-)

    The VIC is ...
    Jimmy Jimmy September 2008 Sinclair Miscellaneous
  • R.I.P. spectrum 48kRecently one of my 48k rubber key (issue 4) machine bit the dust the other day when I tried to power it on. When powering it on, it gave a weird 'bee…

    ... joints, also? I thought the ROM too, being the initial message was ... some extra memory ICs, Z80, ROM, and a spare ULA. Just ...
    thomas3120 thomas3120 February 2009 Hardware
  • Ahh.. the tape loading era! by ate bit[url]http://www.pouet.net/prod.php?which=53846[/url] It is UNBELIEVABLE!!! Effects while loading, MUSIC while loading (and loading normal speed !!!…

    ... Speccy is because Sinclair were too cheap to isolate the tape ... didn't complete the unfinished ROM too.
    chev chev October 2009 Sinclair Miscellaneous
<1234567…34>

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