Showing posts from 2020

Meerkat Evo

Evoluzione delle specie Seems there's another Evolution 2020, so don't get confused I published the plans and instructions for the original Meerkat around 2 years ago, and in that time Meerkat has done a lot of teaching work, not to mention being built quite a few times from my instructions. But over the last while he's been sitting there not doing much because of what I thought was a dead motor, and because my day job needs full attention.  But not that long ago, I got inspired to give Meerkat a proper update. In automotive parlance, this new version is an update of the existing model rather than an all-new model.  So I've decided to call the update " Meerkat Evoluzione 2020 " Back in the workshop again... So what is the feature list for the reborn 'Kat?  How is this for a start? Cliff detection.  Stairs are the enemy of most robots, so we'd better find them before we call off. Power monitoring.  So Meerkat knows how much

Seriously, WHY would you do that? - Part 4

Episode 4 - "We have liftoff" Last time , I got the RX2600 started up and failed to install OpenVMS because of a suspect hard drive.  From the screen shot above, you might observe that I have gotten OpenVMS installed and running on the machine. There were a bunch of issues.  The hard drive supplied with the system was bad, and it was not the original device if the butchered screws on the caddy were anything to go by.  The seller did offer to replace it for me, but since I have a box of replacements, I didn't take him up on the offer.  Needless to say, if I want another RX, I know where I will look first. The other curious issue is that the DVD drive is staggeringly slow.  It's not just OpenVMS, but also on RedHat.  Since it's not something you use much once the system is installed, HP didn't put much emphasis on it's performance. I'm not going to take you through the whole installation process, that's what the OpenVMS manuals are for,

Seriously, WHY would you do that? - Part 3

Episode 3 - " Are we there yet? " Last time , we had the RX2600 plugged in and talking on the Management Processor (MP), and burned a copy of OpenVMS to a DVD.  Now let's get this thing running.  The green on black terminal mode is not required, but it does make things feel so much more serious.  I recommend it. Of course, it's not as simple as it sounds! My system had previously been configured with HP-UX as you can see from the Boot Manager menu.  With the DVD in the internal drive, I scrolled down (using the "v" key) and hit enter to boot it.  Wait a while (patience is a virtue...), you will get an OpenVMS startup message.  So far so good! After a long time you get the installation menu for OpenVMS.  Wait a while again... Alright!  Now, type INITIALIZE (Aussies, Kiwis, Brits etc, just tolerate the spelling) because this is an existing disk, and we're going to clobber it. And this is why my problems began...  DKB200 is on

Seriously, WHY would you do that? - Part 2

It's here! Last time, I wrote about my reasons for choosing the HP RX2600 to run OpenVMS . Having gotten all the manuals, firmware and everything else, I set up the machine according to the instructions from HP, and nothing much happened.  Nothing on the monitor, even though all the docs said it should mirror the console. Next step, connect a cross-over cable to the Management Processor (MP) serial port, and try again.  This time I get greeted by a login prompt.  The user needs to be "Admin", but I don't know the password... No biggie, with the power on, hold in the reset button on the MP card and then you will be prompted to enter "p" to reset the accounts.  The manual says Admin (note the capital letter) should have no password, but the prompt on the console said it's "Admin", so that worked. The Help command is your friend here.  First thing I did was to use the Command Menu (CM) then LC to configure the networking for the