Date   : Sat, 27 Aug 1994 16:11:43 EST
From   : Stephen Quan <quan@...>
Subject: BBC default boot mode.

>From what I can understand, when the BBC powers on for the first time
it gets the bootup mode from dip switches.  When you do a soft boot
it checks (a register?) a bit of memory that tells it the boot mode
which you can set using a *FX command.

Ok, I got this far, could someone tells me where the 6502 gets a clue
of what mode you should be in???  When I got the emulator up, it seems
to put the thing into mode 0.  I trapped the writes to the 6845 and I
see it setting the 6845 registers to that required for MODE 0 operation.
(Not exactly the same, some are out by 1).  Also, when I do a

  PRINT  ?&355

It reports 0, which could mean that either I don't have ?&355 working
yet or I am indeed in mode 0.  How would I trick the thing into believing
I am in mode 7 as soon as it boots up??
-- 
Stephen Quan (quan@...                 ), SysAdmin, Analyst/Programmer.
Centre for Spatial Information Studies, University of Tasmania, Hobart.
GPO BOX 252C, Australia, 7001.  Local Tel: (002) 202898 Fax: (002) 240282
International Callers use +6102 instead of (002).