Bit Cycles To 8-Bit Devices (Using Bs8#) - Intel 386 User Manual

Low Byte
Write
[Late Ready]
State T1
CLK2
CLKOUT
A25:1
M/IO#
D/C#
BLE#
BHE#
W/R#
WR#
RD#
ADS#
NA#
READY#
BS8#
LOCK#
D15:8
Data Out
D7:0
Low
Figure 6-13. 16-bit Cycles to 8-bit Devices (Using BS8#)
High Byte
Low Byte
Write
Read
[Late Ready]
T2 T1 T2 T1
Valid 1
Must be high
Valid 1
Data Out High
Data Out
High
BUS INTERFACE UNIT
High Byte Idle
Read Cycles
T2 T1 T2 Ti
Valid 2
Valid 2
Data Data
In In
Low High
Ti
A3375-01
6-33