"Chris Long" <chris at micromuseum.co.uk> writes: The RM Nimbus isn't really a PC clone -- it ran MS-DOS but had rather different hardware. We used them at school in the early 90s and absolutely hated them; I remember that you had to do "ibmii /p /c" or "setpc /p /c" to get anything with a graphics display to work, and that the colour mapping in text mode was odd, so using qbasic on them meant editing text in white on a red background. Which did interesting things to your vision after a while... If anyone in the Dundee area would like one (with keyboard and monitor), then let me know! -- Adam Sampson <ats at offog.org> <http://offog.org/>

On 02/15/2013 04:09 PM, Tony Duell wrote: '186. There probably were numerous quirks - although it did have a couple of 8-bit ISA slots. I have a complete processor board, so there was certainly at least one - I'm not sure if that qualifies as 'production', though! (I would define it as "production quality" however, suggesting that Acorn did made a small handful of them at the very least) My board is non-functional and actually came with M512 ROMs fitted; it's unknown if those were added by someone at some stage because the original ROMs were missing and they were hoping that this would magically fix it, or if it really is capable of running the M512 copro's firmware without modification. I didn't know that the schematics were "out there" - I got partway through reverse-engineering them before I moved to the US, so it's on the to-do list to finish them one day and try and make my board do something when I eventually get it shipped over here (but having proper Acorn schematics would probably be better!) I know of at least one person who has some bare / partially-populated PCBs, but my board's the only complete one that I know of (aside from the possible ROM issue). cheers Jules