PDP OS Boot Sequence: WAS Re: RK05/RL02 Boot Sequence

From: Megan <mbg_at_TheWorld.com>
Date: Tue Jul 6 12:03:22 2004

>That doesn't match what I learned (or what's in RSTS 10.1). The reset
>in location 0 was an old convention. But when a real boot block
>standard appeared, it said that 0 had to be a NOP, and 2 a branch to
>the setup code. Also, there had to be a "Szeto ID area" just before
>the branch target.

Darn, you're right... I plead memory bit-rot.

The RT data disk (non-bootable, although there is a small routine
loaded into block 0 which, if you try to boot the volume, reports
that it is not bootable) contains

        240
        5
        BR

so there is a reset on a data disk for RT.

A bootable disk, however, is

        240
        BR

as you mentioned...

                                        Megan
Received on Tue Jul 06 2004 - 12:03:22 BST