Microprocessor User's Manual

6-19
CHIP-SELECT UNIT
Figure 6-13. Typical System
L
a
t
c
h
Processor
ALE
AD Bus
Addr
Bus
PCS1
DRQ
CE
D
R
A
M
256K
ARDY
20
MCS3:0
UCS
PCS0
LCS
SRAM
32K
Floppy
Disk
Control
CE CE
EPROM
128K
CE
DRQ
DACK
A0
A19:16
AD15:0
SRDY
4
A1138-0A