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  • DiagROM 1.28

    Posted on June 18th, 2017 Phil

    bus_scanner_wotsitAdded a little extra feature to the Spectrum diagROM: Now when you press the NMI button on the SMART Card, an upper/lower bus test runs showing any unexpected bits as red colours bars. Always nice to have an immediate visual representation of things..

  • C64 Keyboard Variations

    Posted on April 17th, 2017 Phil

    Added an article regarding the different keyboard types used in the C64 over its lifetime, and some notes on repair.

  • About Spectrum Plus Membranes

    Posted on November 17th, 2016 Phil

    I’m often asked why I don’t stock Spectrum Plus / 128 membranes so I thought I ought to post something about them.

  • Hey hey ULA!¬†

    Posted on April 4th, 2016 Phil

    Announcing the Retroleum Nebula – A Spectrum (48) ULA replacement module. (Phew – after many months of tinkering, it feels good to finally get that off my chest!)

    The Nebula, as you might’ve guessed, is a small daughterboard that plugs into the Spectrum’s ULA socket and performs the same functions as the original ULA chip. It’ll be a bit cheaper than a second hand ULA, and should last longer ;)

    You can read all about it here.


  • Spectrum RAM replacement boards

    Posted on October 14th, 2015 Phil

    I’m certainly not the first person to make these but I’ve designed a couple of low power SRAM modules for the Spectrum to replace the DRAM chips originally used. They can be pressed into DIL sockets or soldered direct to the Spectrum PCB. ¬†Available at the store should you need such a thing :)