Table 3-9. Powerpc 60X To Rom/Flash Address Mapping When Rom/Flash Is; Bits Wide (8 Bits Per Falcon) - Motorola MTX Series Programmer's Reference Manual

Falcon ECC Memory Controller Chip Set
3

Table 3-9. PowerPC 60x to ROM/Flash Address Mapping when ROM/Flash is

PowerPC 60x A0-A31
$XX000000
$XX000001
$XX000002
$XX000003
$XX000004
$XX000005
$XX000006
$XX000007
$XX000008
$XX000009
$XX00000A
$XX00000B
$XX00000C
$XX00000D
$XX00000E
$XX00000F
$XXFFFFF8
$XXFFFFF9
$XXFFFFFA
3-20
d. all reads are allowed (multiple accesses to the ROM/Flash
device are performed for burst reads).
More information about ROM/Flash is found in the section on the
Programming Model.
In order to place code correctly in the ROM/Flash devices, address
mapping information is required.
addresses map to the ROM/Flash addresses when ROM/Flash is 16 bits
wide (8 bits per Falcon).
bits wide (32 bits per Falcon).

16 Bits Wide (8 Bits per Falcon)

ROM/Flash A22-A0
$000000
$000001
$000002
$000003
$000000
$000001
$000002
$000003
$000004
$000005
$000006
$000007
$000004
$000005
$000006
$000007
$7FFFFC
$7FFFFD
$7FFFFE
Table 3-9 shows how PowerPC 60x
Table 3-10 shows how they map when Flash is 64
Computer Group Literature Center Web Site
ROM/Flash Selected
Upper
Upper
Upper
Upper
Lower
Lower
Lower
Lower
Upper
Upper
Upper
Upper
Lower
Lower
Lower
Lower
Upper
Upper
Upper