Discussion:
Request for review of new blog
(too old to reply)
Dave O'Reilly
2021-02-03 17:28:12 UTC
Permalink
Hello everyone, hope you’re all keeping safe and well!

I’m a first-time poster here and a recent, but very enthusiastic, fan of the PDP-11. I have started a blog to track my journey of discovery (https://www.learningpdp11.com/) and I would love to get some feedback. For those of you that are also members of the PiDP-11 forum, I posted there first because it was the only forum I was aware of, but now I'm reaching out to some other forums that I have found.

There is a lot of information on the blog that I haven’t been able to find anywhere else (e.g. an instruction-by-instruction breakdown of the bootstrap loader and the absolute loader). Right now I’m working on a complete line-by-line breakdown of the PDP-11 BASIC application.

Hopefully it’s a useful resource for those who like getting really low level understanding, like machine code/assembly stuff.

I’m sharing this link here beacuse I thought it might be of interest to some of you and if anyone has suggestions, either for topics you’d like me to cover or…well, anything really, I’d love to hear!

Thanks!

daveor
legalize+ (Richard)
2021-02-05 06:13:09 UTC
Permalink
[Please do not mail me a copy of your followup]
Post by Dave O'Reilly
complete line-by-line breakdown of the PDP-11 BASIC application.
What flavor of BASIC for which operating system?

ISTR that DEC had different BASIC language implementations for the
different operating systems.
--
"The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline>
The Terminals Wiki <http://terminals-wiki.org>
The Computer Graphics Museum <http://computergraphicsmuseum.org>
Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>
legalize+ (Richard)
2021-02-05 06:14:45 UTC
Permalink
[Please do not mail me a copy of your followup]
Post by legalize+ (Richard)
[Please do not mail me a copy of your followup]
Post by Dave O'Reilly
complete line-by-line breakdown of the PDP-11 BASIC application.
What flavor of BASIC for which operating system?
ISTR that DEC had different BASIC language implementations for the
different operating systems.
OIC now, this is a standalone BASIC implementation that *is* the
operating system. OK...
--
"The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline>
The Terminals Wiki <http://terminals-wiki.org>
The Computer Graphics Museum <http://computergraphicsmuseum.org>
Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>
Ian Hammond
2021-02-05 15:24:17 UTC
Permalink
Post by legalize+ (Richard)
[Please do not mail me a copy of your followup]
Post by legalize+ (Richard)
[Please do not mail me a copy of your followup]
Post by Dave O'Reilly
complete line-by-line breakdown of the PDP-11 BASIC application.
What flavor of BASIC for which operating system?
ISTR that DEC had different BASIC language implementations for the
different operating systems.
OIC now, this is a standalone BASIC implementation that *is* the
operating system. OK...
--
"The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline>
The Terminals Wiki <http://terminals-wiki.org>
The Computer Graphics Museum <http://computergraphicsmuseum.org>
Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>
It's possibly the original PDP-11 BASIC. I was given a copy of the source
listings back in the seventies. IIRC it was written at Dartmouth College, the
home of BASIC, under a contract from DEC, and I think it used IOX, the
"Input/Output Executive" package for I/O. DEC provided source for IOX and
for FPMP, the floating point package.

Loading...