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2-5
CPU
0
Z
15
0
0
S1 S0
IE IM2 IM1
0
0
0
0
IM0
V
C
N
Fig. 2-3-2 Processor Status Word
■
Data Register (32-bit x 4)
This register can be used generally for all operations. Operations are performed with a 32-bit length and the data
size is converted when sending data to and from the memory or by executing the EXTB or EXTH instructions.
When loading data, 8-bit data is zero-extended to 32 bits and sent to the register. When storing data, the lower 8
bits of the register are sent to the memory. When handling the loaded 8-bit data as a signed integer, the data is
sign-extended from 8 bits to 32 bits with the EXTB instruction. When loading data, 16-bit data is zero-extended
to 32 bits and sent to the register. When storing data, the lower 16 bits of the register are sent to the memory.
When handling the loaded 16-bit data as a signed integer, the data is sign-extended from 16 bits to 32 bits with
the EXTH instruction.
■
Address Register (32-bit x 4)
This register is used as an address pointer, and only instructions (addition, subtraction and comparison) for
address calculation are supported.
The address register data is used for pointers, and data is normally sent to and from the memory with a 32-bit
length.
■
Stack Pointer (32-bit x 1)
This pointer designates the first address of the stack region.
■
Program Counter (32-bit x 1)
This counter designates the address of the command being executed.
■
Multiply/Divide Register (32-bit x 1)
This register is provided for multiply and divide instructions. It holds the upper 32 bits of 64-bit multiplication
results for multiply instructions and the remainder (32 bits) for divide instructions. Also, the upper 32 bits of the
dividend are loaded to this register before executing divide instructions.
■
Processor Status Word (16-bit x 1)
This register indicates the CPU status, and contains the operation result flags and interrupt mask level, etc.
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...