Intel 80C188XL - Manual (Page 158)

6-3
CHIP-SELECT UNIT
Figure 6-2. Chip-Select Block Diagram
= Block Size UCS
= Block Size LCS
MCS3
MCS2
MCS1
MCS0
= Base Base + 0
Base + 128
Base + 256
Base + 384
Base + 512
Base + 640
Base + 768
PCS0
PCS1
PCS2
PCS3
PCS4
= Base
PCS5
PCS6
MUX
A/B
A
B
A1
A2
EX Control Bit
Internal Address Bit
Memory/
I/O Selector
MS
Internal
Address Bus
= Block Size/4
= Block Size/4
= Block Size/4
= Block Size/4
A1139-0A