ZiLOG Z80380 User Manual page 139

Z
ILOG
MTEST
← SR(7)
Operation: S
← SR(6)
Z
← SR(1)
C
The three mode control bits in the Select Register (SR) are transferred to the flags. This
allows the program to determine the state of the machine.
Flags: S: Set if Extended mode is in effect; cleared otherwise
Z: Set if Long word mode is in effect; cleared otherwise
H: Unaffected
V: Unaffected
N: Unaffected
C: Set if Lock mode is in effect; cleared otherwise
Addressing
Mode Syntax
MTEST
DC-8297-03
Instruction Format
11011101 11001111
Execute
Time Note
2
™
Z380
U ' M
SER S ANUAL
MTEST
MODE TEST
5-105