• PDP11HackPlus,  TTL CPU

    Start of something new & daft

    I’ve long had an interest in computers, older computers that is. I mean I grew up in the 80s and that was the era of computers, I had a VIC20, C64 and so on. But what was missing was the blinking lights, which was part of the idea behind the PJ5CPU project (Under the TTL CPU category). Now I also like obscure things and the DEC DCJ11 CPU is one such chip, it is essentially a PDP11 on a chip minus the RAM and peripherals (floppy disk, hard disk, serial, etc), I’ve been after one for a while but didn’t know what I’d do with it, anyway one came up…

  • Repairs,  Synths,  TTL CPU


    I thought I’d move away from so called “social media” due to the increase in far right extremism, bigotry and general hatred in the world. This is a shame as I’ll miss a lot of the people I follow on twatter, faceprat and so on, but for my own mental health it’s time to move on. So I’m here to talk about random tech things I find interesting, maybe update on some of the more tech points of my synthesiser projects and certainly share posts of the odd repair job I do. I’m also working with a friend, Jon, on building a CPU entirely out of TTL logic chips which…