Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Updated the last blog post

Browse source
This commit is contained in:
Jeff Parsons 2016-11-20 15:42:16 -08:00 • committed by Jeff Parsons
commit 00cbf3d17c
1 changed files with 3 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
_posts/2016-11-13-curious-pdp-11-features.md
View file

@ -5,12 +5,12 @@ date: 2016-11-13 13:00:00
permalink: /blog/2016/11/13/
---
Last week, I ran PDPjs through a series of early DEC [PDP-11 Paper Tape Diagnostics](/apps/pdp11/tapes/diags/).
Last week, I ran PDPjs through a series of early [PDP-11 Paper Tape Diagnostics](/apps/pdp11/tapes/diags/).
These tests were originally released in 1970 and are documented in such DEC publications as the
[MAINDEC USER REFERENCE MANUAL](http://archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC_User_Reference_Manual_Oct73.pdf)
(October 1973).
[Tests 1-12](/apps/pdp11/tapes/diags/#tests-1-12), "MAINDEC-11-D0AA-PB" through "MAINDEC-11-D0LA-PB",
[Tests 1-12](/apps/pdp11/tapes/diags/#tests-1-12) (MAINDEC-11-D0AA-PB through MAINDEC-11-D0LA-PB)
uncovered a couple of uninteresting bugs in the emulator that affected the ASRB and RORB instructions, both involving some
incorrect masks. But aside from those hiccups, the tests ran fine. Ditto for [Test 13](/apps/pdp11/tapes/diags/#test-13).
@ -73,7 +73,7 @@ instruction tests, instead of using opcodes that would become new instructions l
The most recent paper tape diagnostic I've run is the [11/70 CPU EXERCISER](/apps/pdp11/tapes/diags/#md-11-1170-cpu-exerciser),
and after several more bug fixes, PDPjs passes that test now, too. That's something not even
[SimH](https://github.com/simh/simh) is currently able to do.
[SimH](https://github.com/simh/simh) is currently able to do (as of November 2016).
---