HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 109

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

2.3.3
The program counter (PC) stores the value obtained by adding 4 to the current instruction address.
There is no instruction to read the PC directly. Before an exception handling state is entered, the
PC is saved in the save program counter (SPC). Before a subroutine call is executed, the PC is
saved in the procedure register (PR). In addition, the PC can be used for PC relative addressing
mode.
Figure 2.5 shows the system register and program counter configurations.
Program Counter
Figure 2.5
Procedure register (PR)
Multiply and accumulate high and low registers (MACH/MACL)
Program counter (PC)
31
31
31
System Registers and Program Counter
MACH
MACL
PR
PC
0
0
0
Rev. 3.00 Jan. 18, 2008 Page 47 of 1458
REJ09B0033-0300
Section 2
CPU