HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 250

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

Bit 7: DVF
0
1
See the PC trace description for the method of executing a PC trace using the branch source
registers (BRSR), branch destination registers (BRDR), and branch flag registers (BRFR).
Bits 11 to 8, 6 to 0—Reserved: These bits are always read as 0. The write value should always be
0.
6.2.21
BRSRH
BRSRL
The branch source registers (BRSR) comprise a set of four 32-bit read-only registers. The values
in these registers are used to calculate the address of the last instruction executed before a branch
when performing a PC trace. The BRSR registers form a FIFO (first-in first-out) queue for PC
trace use. The queue is shifted at each branch.
232
Initial value:
Initial value:
Initial value:
Initial value:
R/W:
R/W:
R/W:
R/W:
Branch Source Registers (BRSR)
Bit:
Bit:
Bit:
Bit:
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
BSA31
BSA23
BSA15
BSA7
15
15
R
7
R
R
7
R
Description
BRDR value is invalid
BRDR value is valid
BSA30
BSA22
BSA14
BSA6
14
14
R
6
R
R
6
R
BSA29
BSA21
BSA13
BSA5
13
13
R
5
R
R
5
R
BSA28
BSA20
BSA12
BSA4
12
12
R
4
R
R
4
R
BSA27
BSA19
BSA11
BSA3
11
11
R
3
R
R
3
R
BSA26
BSA18
BSA10
BSA2
10
10
R
2
R
R
2
R
BSA25
BSA17
BSA9
BSA1
9
R
1
R
9
R
1
R
(Initial value)
BSA24
BSA16
BSA8
BSA0
8
R
0
R
8
R
0
R