Z80180 Datasheet, PDF (301/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z8018x Family
MPU User Manual
285
– DREQ0, DREQ1 = 1
memory to/from (memory mapped)
I/O DMA transfer
– BCR0, BCR1 = 0000H (all DMA transfers)
– NMI = 0 (all DMA transfers)
OTHER OPERATION MODE TRANSITIONS
The following operation mode transitions are also possible.
1. HALT
IOSTOP
2. SLEEP
SYSTEM STOP
{ } DMA
REFRESH
BUS RELEASE
{ } DMA
REFRESH
BUS RELEASE
BUS RELEASE
BUS RELEASE
UM005001-ZMP0400