Intel 8XC196NT User Manual page 98

The top 64K×8 RAM stores near data at addresses 00600–01EFFH and 02000–0FFFFH. The bot-
tom 64K×8 RAM stores far data at addresses 10000–1FFFFH. The bus-timing mode must be ei-
ther mode 0 or mode 3 because only one address latch is used. (See "Bus Timing Modes" on page
14-34.) Table 4-14 lists the memory addresses for this example.
V
CC
EA#
87C196NT
Page 00H
000000–0005FFH,
001F00–001FFFH
Page FFH
FF0400–FF05FFH,
FF2000–FF9FFFH
BUSWIDTH
RD#
Figure 4-10. A 64-Kbyte System with Additional Data Storage
EPORT.0
AD15:8
AD7:0
ALE
WR#
A7:0
74LS373
MEMORY PARTITIONS
CE#
Page 00H
64K × 8 RAM
(near data)
00600–01EFFH,
02000–0FFFFH
A15:8
A7:0
D7:0
OE# WE#
CE#
A15:8
Page 01H
A7:0
64K × 8 RAM
(far data)
10000–1FFFFH
D7:0
OE# WE#
A3059-02
4-31