Fixed my pdt11/150

Zane Healy healyzh at
Sun Apr 26 15:58:47 CDT 2020

That switch is obviously a design flaw!  I sort of picked up on it as a design flaw when I got mine. :-)


> On Apr 26, 2020, at 1:53 PM, Chris Zach <cz at> wrote:
> No I put together an RX02 with an RX01 controller on my bigger computer to format a special disk. It can only use RX01 formatted disks, and to make a boot disk you need the PD.SYS driver and to copy/boot the PD driver to the boot block.
> And yes, the switch on the back is broken. How did you guess :-) For awhile I used it in the 80's as a mini BBS with MUBasic and a little program I ran on top of that. Technically it did... work.. ish.
> C
> On 4/26/2020 4:42 PM, Zane Healy wrote:
>> Somehow I like the term “Boat Anchor” to describe the PDT-11/150.  I’ve had one for well over 20 years. At a bare minimum, it needs the on/off switched replaced, as it’s broken off.  Is that the disk that came with yours?  I like how it’s all games. :-)
>> I can’t remember, are these disks formatted strange?
>> Zane

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