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  • Sam Coupe signed ROMThough not strictly Sinclair hardware I found this interesting enough to share. I was looking through the various MGT Sam coupe hardware that I have …

    ... saw that one of the Rom chips was signed by Gordon ...
    Cameraman Cameraman May 2014 Hardware
  • white sticker next to reset on +128kjust noticed this while putting it away its a small rounded white sticker with number 3300 on it and its stuck on right next to the reset switch.th…

    just noticed this while putting it away its a small rounded white sticker with
    number 3300 on it and its stuck on right next to the reset switch.this wouldnt be a unit number in the production run would it?
    :wink:
    zedexspectrum zedexspectrum May 2014 Hardware
  • Which games perform checksums on the 48K ROM?I've just modified a version of the 48K Spectrum ROM designed for use on the Timex Sinclair 2068, so that a 16 bit checksum of the ROM produces the r…

    ... version of the 48K Spectrum ROM designed for use on the ... 16 bit checksum of the ROM produces the result $641F and ... values as the standard 48K ROM.

    Does anyone ... performed these tests on the ROM? I'd like to ... try the new ROM out on these games.
    rga24 rga24 June 2014 Development
  • bubble bus[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0011630[/url] was never released, that comes direct from the owner .. "we never put out any ad…

    ... , prior to being called bubble bus , it was known as "the ...
    fog fog June 2014 Infoseek database
  • ZX-FPGA dev boardI've been sporadically working on this: [IMG]http://photo.alioth.net/tmp/spectradvi.png[/IMG] It's an FPGA dev board for the Spectrum. It uses a CP…

    ... voltage levels between the ZX bus and the 3.3 volt ... can control the Spectrum's reset circuit, but once that's ...
    Winston Winston June 2014 Hardware
  • Interface 1 ROM replacementHi All! I wrote down my story because I think that somebody might have similar problem and can find some ideas here how to overcome it... :) Recent…

    ... br /> I removed the ROM and the ZX Spectrum started ... any commands that needed the ROM, it failed with the ... with an "external Interface 1 ROM":
    [IMG]http://gigant ... Spectrum pages in that ROM at only a certain ... is no space for a ROM interface board, so the ...
    jimre jimre June 2014 Hardware
  • Would Anyone Be Willing/Able To Burn Me A RomI would Like If Possible For Someone To Burn Me A Custom 32k Rom But I Would Also Need The Chip Supplied Which Cuts Down My Chances Of Someone Being …

    ... Burn Me A Custom 32k Rom But I Would Also Need ...
    zedexspectrum zedexspectrum July 2014 Hardware
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... an emulator with a modified ROM file with a patch in ... /> ...

    Oh, hang on, reset (ERR_NR), LD HL,[true (VARS ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Some hardware from JiiiraFor those who haven?t discovered [B][URL="http://jiiira.ajetaci.cz/speccy_hw/index_eng.xhtml"]my webpages[/URL][/B] yet: ;-) [B][URL="http://jiiira…

    ... ][/B] is a ZX Spectrum bus expansion board containing two (for ... with other HW. Contains the RESET button. [I]([URL="http://jiiira ...
    Jiiira Jiiira July 2014 Hardware
  • DivMMC + ESXDOSHowdy, I'm trying to implement DivMMC and ESXDOS on my FPGA-based Spectrum compatible, ZX Prism. Could anyone tell me under what bus conditions the …

    ... tell me under what bus conditions the ESXDOS ROM/RAM is paged ... , M1 and RD low, Address bus=0x0008 would be my guess ...
    JeffB JeffB August 2014 Emulators
  • Spectrum Test Program into ROM cartridge?Hello! I need your help! Is there away to put [URL="http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Files/Cassette_Files/Test_Program.tz…

    Hello! I need your help!
    Is there away to put [URL="http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Files/Cassette_Files/Test_Program.tzx"]this program[/URL] into a Rom cartridge?
    Many thanks in advance.
    Saltor Saltor September 2014 Sinclair Miscellaneous
  • Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…

    ... idea is to use the ROM printer routine to print 32 ... an AT 1,0 using RST 16 or whatever, but I ...
    daveysludge daveysludge September 2014 Development
  • 'Ocean Draw' instructionsHere are the instructions for the screen and sprite editor used in-house at Ocean Software, possibly typed up by Joffa Smifff (as the 2 of the sprite…

    ... -SKIP (P/C)
    O -RESET (P )
    I -INVERT (P ...

    3 -SWITCH TO ROM CHARACTERS

    4 -SWITCH ...
    Mark R. Jones Mark R. Jones September 2014 Sinclair Miscellaneous
  • Retroleum SMART Card InterfaceHi guys, Over the last few months I've been designing an interface board for the Spectrum 48 - seems to be all the rage :) It started off as simple …

    ... /> It started off as simple ROM swapper and ended up as ... /> interface, 256KB flashRAM, 128K SRAM, reset and NMI
    buttons.
    Retroleum Retroleum October 2014 Hardware
  • New version emulator ZEsarUX-1.3Hi I have uploaded a new version of my ZX80/81/Spectrum emulator at [url]http://sourceforge.net/projects/zesarux/[/url] Changes are: Added experim…

    ... . The ones that doesnt use rom calls (RST 10H). Supports automatic detection ...
    chernandezba chernandezba October 2014 Emulators
  • 404 for Retroleum's daignostic ROM: Request.[url]http://www.retroleum.co.uk/electronics-articles/a-diagnostic-rom-image-for-the-zx-spectrum/[/url] I'm getting access denied when I try to downl…

    ... .uk/electronics-articles/a-diagnostic-rom-image-for-the-zx-spectrum ... try to download the Diagnostic ROM, I've just emailed the ...
    Korinel Korinel October 2014 Hardware
  • Tinkering with DMASo, some afternoon tinkering... [img]http://photo.alioth.net/tmp/dma_small.jpg[/img] The purpose of this all is to see what's possible using the Xi…

    ... has taken control of the bus, written to screen memory, then ... with static RAM and no ROM to be able to bootstrap ...
    Winston Winston November 2014 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…

    ... reset button.

    Here is planned features/functions:

    - rom ... external ZX48/128/+3 rom (may be +3e rom)
    - ... QAOPM,QAOP+SPACE)
    - RESET button
    - MAGIC(NMI) ... - all ram features
    - rom switching 16kB mode for flashing ...
    velesoft velesoft November 2014 Hardware
  • JET PAC ROM & INTERFACE 2Hi - I have two items for sale either singularly or together- A working Interface 2 and a working Jet Pac ROM cart- (in box but no instructions) I am…

    ... and a working Jet Pac ROM cart- (in box but no ...
    retromad retromad December 2014 Sales
  • Strange ROM in grey +2I got a grey +2 for repair and I got it working. However, when I did some final testing, I realized there were no key-clicks either in 128K or 48K mo…

    ... expect. I pulled out the ROM and replaced it with a ... /> I wonder what is this ROM, are there any other modifications ...
    schombi schombi December 2014 Hardware
  • Need help finding multuface rom identification tap fileI've just recently got my first mf1 and I think it may be early it has a pass through and the hole in the case for the joy but no connector and in th…

    ... /> Maybe some body has the rom id tap file drop boxed
    zedexspectrum zedexspectrum December 2014 Hardware
  • Patching RST routines?Hi all, I am quite unexperienced regarding the Speccy and today I made another attempt to make a concept for a SymbOS port to this machine. There is…

    ... at #0000-#0040 for the RST commands?

    Is there ...
    Prodatron Prodatron December 2014 Development
  • Z80 Special ResetThe Z80 CPU has two types of reset, normal and special. The latter is little-known and for more information please see [url]http://www.primrosebank.n…

    ... CPU has two types of reset, normal and special. The latter ... or comments about the special reset or my article would be ...
    TonyB TonyB January 2015 Hardware
  • ZX rom type detectionHere is routine for fast detection of zx rom / computer model. [URL="http://velesoft.speccy.cz/other/ZXROMDETECT.zip"]http://velesoft.speccy.cz/othe…

    ... for fast detection of zx rom / computer model.

    [URL ... +2 SPANISH
    255 = UNKNOWN ROM

    Source code:
    rom type from 48basic rom.
    I compare ... . Only original ZX Spectrum 48 rom contain byte #BF at address ...
    velesoft velesoft January 2015 Sinclair Miscellaneous
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... .com/svn-history/r687/rom/zxevo.rom]zxevo.rom[/url]


    ROM set, first disable tape autostart ... select either 48k or 128k ROM. Then proceed as always -- LOAD ... new feature in his EVO Reset Service and fixing bugs timely ...
    lvd lvd January 2015 Hardware
  • Windows Fuse Emulator ProblemsHi, I'm using the current version of FUSE on Windows (1.1.1) I go to 'Options' > 'Peripherals' > 'General' I tick 'Interface 1' and un-tick 'Inter…

    ... tells me it needs to reset, but then I get this ... />
    couldn't' find ROM 'if1-2.rom'

    I'm ...
    jonesypeter jonesypeter January 2015 Emulators
  • Rom questionHi Can .rom files be viewed? I am curious to what the .rom file looks like. I saw some versions that have been modified and have source code to vie…

    Hi

    Can .rom files be viewed? I am ... curious to what the .rom file looks like.


    So is a rom file just compiled assembly code ...
    username username February 2015 Emulators
  • ZX81 SP ROM Disassembly<div>Hi All,</div><div><br></div><div>For anyone who is interested in ZX81 Assembler and ASZMIC ROM...</div><div><br></div><div>I have created a disa…

    ... in ZX81 Assembler and ASZMIC ROM...
    I have created ... disassembly of the Comprocsys SP ROM for ZX 81 froman ... conjunction with the Comprocsys ASZMIC ROM or without (via ZX81 BASIC ... commands).
    SP ROM Disassembly Xcode project is available ...
    dbolli dbolli June 2015 Sinclair Miscellaneous
  • Removal of "reset on break" protection (old basic program)Hi, Long time lurker, here! This is hopefully quite simple but there's an old basic game in the I'd like to bring up to date / take a look at …

    ... into it, it causes a reset.

    I did a ...
    briscaF1 briscaF1 August 2015 Sinclair Basic
  • Odd joystick interface / startup behaviourI was experimenting with setting up a machine to run [i]Bomb Munchies[/i] at the weekend and was surprised by a particular condition that caused my +…

    ... put different data onto the bus? And is there anything like ... startup sequence of the +2A ROM?

    I've tried ...
    joefish joefish August 2015 Hardware
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Latest Posts

  • I am currently watching.....
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    John Elliott on April 21
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    mel the bell on April 21
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    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
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  • +3 Disk drive motor
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  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
rst 1.2K 2.5K
bus 4.3K 6.5K
reset 4.8K 6.9K
rom 15.6K 29.7K

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  • Searching for correct Betadisk 48k TR-DOS v4.12 ROM (Save ROM via TRDOS-Prompt to Disk)Hi,<br /> <br /> I have two ROM-Files which should be read out from an original Betadisk 48 Interface TRDOS v4.12 (ROM-Size 8k).<br /> But when I …
  • CPU speed controller (SLOMO) + K-MOUSE + JOYSTICK + ZX BUS EXPANSION (3x throught zx bus)Anyone is interested of this hardware ?<br /> [img]http://velesoft.speccy.cz/other/km2016lp3d1.jpg[/img]<br /> <br /> It's horizontal version of K…
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