Commodore Amiga A500 Technical Reference Manual page 33

7 6 5 4
3 2 1 0 Product number, this number is defined by the
manufacturer of the board and is used by auto-
config software to initialize drivers for the
board.
7 6 5 4 3 2 1 0
Reserved, must be as specified
Bits are currently zero
0
means this board can be shut up
1
means this board cannot be shut up
0
means any space okay
1 means preference to be put in the 8 Meg
space
7 6 5 4 3 2 1 0
Reserved, must be
0
7 6 5 4 3 2 1 0
Mfg
#
high byte
7 6 5 4 3 2 1 0
Mfg
#
low byte; These 2 bytes are assigned by
CBM. They are used by the auto-config software
to initialize drivers for boards.
7 6 5 4 3 2 1 0
Optional serial number, byte
0
(msb)
7 6 5 4 3 2 1 0
Optional serial number, byte
1
7 6
5 4 3
2 1
0
Optional serial number, byte
2
7 6 5 4 3 2 1 0
Optional serial number, byte
3
(Isb)
7 6 5 4 3 2 1 0
Optional ROM vector high byte
7 6 5 4 3 2 1 0
Optional ROM vector low byte. If the 'ROM addr
valid' bit
(4
of nibble
0)
is set, then these 2
bytes are the offset from the board's base ad-
dress at which the start of the ROM code infor-
mation is located (e.g., the hard disk driver). If
the bit
it
not set, then these
2
bytes have no
meaning.
7 6 5 4 3 2 1 0
Reserved, read must be
0;
write resets base
address register
7 6 5 4 3 2 1 0
Reserved, must be
0
7 6 5 4 3 2 1 0
Reserved, must be
0
7 6 5 4 3 2
1 0
Reserved, must be
0