Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manuale Utente Scaricare il pdf (Pagina 20)

2 REGISTERS

EPSON

S1C33 FAMILY C33 PE CORE MANUAL

2.9.2 Special Registers

%ss ss is a metasymbol indicating the special register that holds the source data to be transferred to a general-

purpose register. The instruction that operates on a special register as the source is as follows:

ld.w %rd,%ss

%sd sd is a metasymbol indicating the special register to which data is to be loaded from a general-purpose

ld.w %sd,%rs

The bit field that specifies a register in the instruction code contains the code corresponding to a given register

number. The relationship between the special registers and the register numbers is listed in the table below.

Table 2.9.2.1 Special Registers

Special register

PSR

ALR

AHR

TTBR *

IDIR *

DBBR *

%psr

%sp

%alr

%ahr

%ttbr

%idir

%dbbr

%pc

The new registers added to the C33 PE Core are marked with * in the above table.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 180 181

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Manuale Utente Pagina 20