Tape 01 - System Overview

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1st video of a series instruction tapes about the PDP-11.
The videos are captures of VHS video tapes being over 25 years old.
Those VHS tapes were made by taping the projection slides from the special projection device used by the individual student following this course.

Опубликовано:

15 сен 2024

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Комментарии : 14

@stevejohnson1685 Год назад

Wish I had had this overview in 1977 when I started my Master's degree at Ohio State University. My project included wire-wrapping a Unibus interface card for the PDP-11/45 backplane, and writing a subroutine library for it in PDP-11 assembler, then testing it out using PDP-11 Fortran. It took me a while, reading those manuals, to comprehend backplane timing and understand the interface circuitry, but it all worked out in the end. Then, on to Bell Labs, for my first job out of school, learning Unix internals and C programming on PDP-11, VAX, and No.5 ESS hardware. Definitely established the course of my career since then! Thank you!

@dankfam6686 9 месяцев назад

Bell labs as a first job wow thats amazing.

@zyunx4341 Год назад

Thank you! It helps a lot to study earlier UNIX.

@donwald3436 6 лет назад

At "up to 2 mega words of main memory" I blurted out "What?" Wow that was so much memory!!!

@robertnussberger2028 Год назад

I go by megabytes. I'm guessing megawords was another way of saying megabytes.

@johngant3991 Год назад

No, a word has its own definition in computer science. en.m.wikipedia.org/wiki/Word_(computer_architecture)

@nerd2544 Год назад

@@johngant3991 pdp 11 is 16-bit, one byte is 8 bits, 2 mega words ==> 2 million individual 16-bit pieces of data ==> 4 million 8-bit pieces of data ==> so, 4 Megabytes of RAM upon looking at the data sheet of the PDP11 variants around the mid 70s on wikipedia this should be correct I think

@kenchace8444 2 месяца назад

That’s correct. There are bytes (8 bits) words (16 bits) and in the PDP11 space longwords (32 bits)

@MirekFe Год назад

I found this video through Gopher. :) Thank you for uploading this.

@martygeist2116 9 лет назад

Hi ; Will There be more of these ?? I like what you have copied so far.. THANK YOU Marty

@the123king 3 года назад

Hi. I've obtained a full set of the workbooks that go along with these lectures. I'm planning on scanning them for posterity if you're interested

@edgroenenberg5916 3 года назад

Hello Josh. I do have a set myself, but never came to scan them. If you do and make them available on-line somewhere I'll gladly add the link in the description area.

@bobvines00 2 года назад

@@edgroenenberg5916 If Josh never scanned/scans them, could you please scan your copies of the lecture workbooks? :) As you can see in my message/reply to Josh, Bitsavers doesn't appear to have a *complete* set of the workbooks and I'd _really_ like access to a complete set for self-training (i.e., watching the 28 videos that you've posted here + going through the handbooks that I do have) so that I can learn how to use my PDP-11s.