• Acorn System 1 Speed Test


    Lots going on with this project right now, but I thought I’d do just a very quick update.Another batch of PCBs arrived a couple of days ago and I’m slowly working my way through assembling them. The one thing I’m pleased with is that by replacing the relatively slow (in terms of access speed) EPROM […]


  • Acorn System 1 Memory Board and Dataman programmer update


    Last week I’d had enough of that Dataman programmer. It would sometimes work but more often that not Windows would fail to recognise the programmer. I’d tried it on Windows XP and three different Windows 10 machines (one was a brand new out the box machine) and it was always the same. So I sent […]


  • Acorn System 1 progress and Dataman programmer


    I’m sort or regretting buying this Dataman programmer. I need to spend a lot more time trying to figure out exactly what’s going on with it, but assuming my unit doesn’t have some weird intermittent fault, then the quality of the software; specifically the USB driver sucks. I’ve tried this programmer now in three different machines; […]


  • Dataman EPROM programmer and fake EEPROMS


    One of my ongoing projects is building a replica Acorn System 1 computer and this has required programming EPROMS. Programming EPROMS in itself is fast, but erasing them ready for re-use is time consuming. So for this project I decided to use EEPROMS. Ebay had numerous Chinese sellers listing all types of devices from 2K […]


  • My Acorn system 1 lives


    I’ve been working on building a replica of an Acorn System 1 machine for quite some time and it’s basically been working, but had a really annoying niggle that I’ve been struggling to fix. Anyway, yesterday I was browsing an online forum and decided to post details about the problem I was having. Talk about […]


  • A quick update


    My day job has been insanely busy the last few weeks, and to be honest the last thing I’ve felt like doing was spending time hunched over a soldering iron or more time behind a computer screen.  I work for the NHS and all this virus business is to say the least depressing, so I […]