>It does look like ODS-2 and RT-11 FS cannot co-exist, however,
>since they both want to use the 64 blocks at the start of
>the image, unless it's possible that the unnecessary fields in
>each of those two formats can be persuaded to step out
>of each others way. Do you have any details about exactly
>what RT-11 requires in that area? Maybe a disk that boots
>on PDP-11, VAX (VMS), Alpha (VMS) and PC is possible
>after all :-)
RT absolutely needs block 1, the Home Block. If you want the
disk bootable, then 2-5 are absolutely required. Typically,
blocks 6 through 6+(2*31)-1 are required for the directory,
but the home block contains a value where the directory is
supposed to start... but I don't believe that RT actually
uses this field, and many utilities certainly don't, assuming
the directory starts in block 6 (not to mention user programs).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| | |
| "this space | (s/ at /_at_/) |
| unavoidably left blank" | URL:
http://world.std.com/~mbg/ |
| | "pdp-11 programmer - some assembler |
| (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
Received on Wed Mar 05 2003 - 00:33:01 GMT