Table 3-16. Rom Block B Size Encoding - Motorola MVME2600 Series Reference Manual

Falcon ECC Memory Controller Chip Set
3
3-50
rom b siz The rom b siz control bits are the size of ROM/Flash for
Block B. They are encoded as shown in Table 3-16.

Table 3-16. ROM Block B Size Encoding

rom b siz
%000
%001
%010
%011
%100
%101
%110
%111
rom_b_rv rom_b_rv and rom_a_rv determine which if either of
Blocks A and B is the source of reset vectors or any other
access in the range $FFF00000 - $FFFFFFFF as shown in
Table 3-14.
rom_b_rv is initialized at power-up reset to match the
inverse of the value on the CKD1 pin.
rom b en When rom b en is set, accesses to Block B ROM/Flash in
the address range selected by ROM B BASE are enabled.
When rom b en is cleared they are disabled.
rom b we When rom b we is set, writes to Block B ROM/Flash are
enabled. When rom b we is cleared they are disabled.
Refer back to Table 3-15 for more details.
BLOCK
SIZE
1Mbytes
2Mbytes
4Mbytes
8Mbytes
16Mbytes
32Mbytes
64Mbytes
Reserved