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Section 2 Software Specifications when Using the SH7781

Rev. 2.00 Jan. 28, 2008 Page 9 of 32

REJ10J1422-0200

Section 2 Software Specifications when Using the SH7781

2.1 Differences between the SH7781 and the Emulator

1. When the emulator system is initiated, it initializes the general registers and part of the control

registers as shown in table 2.1. The initial values of the actual SH7781 registers are undefined.

When the emulator is initiated from the workspace, a value to be entered is saved in a session.

Table 2.1 Register Initial Values at Emulator Link Up

R0 to R14 H'00000000

R15 (SP) H'A0000000

R0_BANK to R7_BANK H'00000000

PC H'A0000000

SR H'700000F0

GBR H'00000000

VBR H'00000000

MACH H'00000000

MACL H'00000000

PR H'00000000

DBR H'00000000

SGR H'00000000

SPC H'00000000

SSR H'000000F0

FPUL H'00000000

FPSCR H'00040001

FR0 to FR15 H'00000000

XF0 to XF15 H'00000000

2. The emulator uses the H-UDI; do not access the H-UDI.

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Renesas SH7781 Información técnica Pagina 17