Date   : Tue, 24 Jan 2012 01:39:16 +0000
From   : jgh@... (J.G.Harston)
Subject: Help figuring out ICs and ROMs for BBC (B or Master)

stuart wrote:
> Sorry I should have said in my last message that the best way to find
> out what is on the unlabelled EPROMs is to put them in a reader and
> check the first few dozen bytes of each one. IIRC there is a sign-on
> message a few bytes in that will show what code is in the rest of the
> chip.

Specifically, byte 9 onwards is the ROM's title:

0000: Language Entry
0003: Service Entry
0006: ROM Type
0007: Copyright message offset
0008: Binary Version Number

0009: ROM title, &00
nnnn: Optional ROM version string
vvvv: &00,"(C)" copyright string

-- 
J.G.Harston - jgh@...      - mdfs.net/jgh