s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 75

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

S3C2410A
Reserved bits
10000
10001
10010
10011
10111
11011
11111
M[4:0]
User
FIQ
IRQ
Supervisor
Abort
Undefined
System
The remaining bits in the PSR's are reserved. When changing a PSR's flag or control bits,
you must ensure that these unused bits are not altered. Also, your program should not rely
on them containing specific values, since in future processors they may read as one or
zero.
Mode
R7..R0,
LR, SP
PC, CPSR
R7..R0,
LR_fiq, SP_fiq
PC, CPSR, SPSR_fiq
R7..R0,
LR_irq, SP_irq
PC, CPSR, SPSR_irq
R7..R0,
LR_svc, SP_svc,
PC, CPSR, SPSR_svc
R7..R0,
LR_abt, SP_abt,
PC, CPSR, SPSR_abt
R7..R0
LR_und, SP_und,
PC, CPSR, SPSR_und
R7..R0,
LR, SP
PC, CPSR
Table 2-1. PSR Mode Bit Values
Visible THUMB state registers
R14..R0,
PC, CPSR
R7..R0,
R14_fiq..R8_fiq,
PC, CPSR, SPSR_fiq
R12..R0,
R14_irq, R13_irq,
PC, CPSR, SPSR_irq
R12..R0,
R14_svc, R13_svc,
PC, CPSR, SPSR_svc
R12..R0,
R14_abt, R13_abt,
PC, CPSR, SPSR_abt
R12..R0,
R14_und, R13_und,
PC, CPSR
R14..R0,
PC, CPSR
Visible ARM state registers
PROGRAMMER'S MODEL
2-9