>OK, I just picked up a PDT-11/150 today for $5 at a local junk store. I
>know that it is some sort of PDP-11, but that is about the extent of my
>knowledge. Main thing I'm wondering at the moment is what was its intended
>use?
It is a PDP-11, using the LSI-11/2 (and 11/03) chip set. It can have up
to 60kb of user-available memory, a console line (programmed like a DL),
3 other serial lines, an asynch/sync line and a printer port.
The floppy disks are 8" RX01 compatible drives. The interesting thing is
that this device can format the disks, not by some special format command
procedure... it formats a sector when it writes it...
The on-board ROMs know about RT-11 Queue elements, so the RT driver
simply calls the ROM to handle the I/O, and the ROM returns if there
was an error, or when the request is complete.
>Also what OS's run on it? I would guess RT-11 will run on it, but not much
>else.
I don't know of anything else which ever ran on it... (I would be
interested to know if there ever was).
When you put in a PDT-bootable diskette, you type '_at_@' (two at-signs)
at the console terminal to cause it to boot.
I have heard from some that a version with EIS/FIS is called a
Mini-Minc... I have several PDTs that I have upgraded myself.
Otheriwse, if you locate a EIS/FIS emulator written years ago
by Ian Hammond, you can get EIS/FIS programs to run on it.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '_at_' in place of '!' |
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| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
Received on Sat May 08 1999 - 21:25:49 BST