It's "Rocky Mountain BASIC" V6.2, which you used to be able to get as floppy images from the Australian HP Museum. I think the standalone Pascal system still ran on these as well.
On 7/17/16 9:47 AM, devin davison wrote: > The basic os that came installed on it looks pretty interesting too, > although i need to read up on it some. I'm going to image the drive so in > the event it goes bad or i need to set things back to how i got the machine > i can do so. >
