NEC PD78214 - Manual (Page 404)

375
Chapter 13 Local Bus Interface Function
13
Fig. 13-27 Preventing Problems That May Occur during Emulation
A19
To target circuit
A18
A17
A16
ASTB
Q 4
Q 3
Q 2
Q
1
D 4
D 3
D 2
D
1
Target probe
74HC375