>That describes the procedure for switching between SJ and FB monitors,
>which clearly shows that the key issue is that the monitor you want to
>boot is always MONITR.SYS.
Very good... I had sent that in private mail to jerome... The point
is that at that time, the monitor/device driver separation had not
yet occurred (didn't happen until V3B or V4) and so the boot code
specifically looked for the file MONITR.SYS on the boot volume.
I believe that one other requirement from the time is that it had
to be in the first directory segment... I seem to remember the
boot code at one point had a problem with scanning past the first
segment. I don't remember if that was a design problem from early
in RT history or a temporary, introduced bug.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| Member of Technical Staff | megan at savaje.com |
| SavaJe Technologies, Inc. | (s/ at /_at_/) |
| 100 Apollo Drive | URL:
http://world.std.com/~mbg/ |
| Chelmsford, MA 01824 | "pdp-11 programmer - some assembler |
| (978) 256 6521 (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
Received on Sun Feb 15 2004 - 11:12:19 GMT