NEC µPD72257 Preliminary User's Manual page 145

Host CPU Interface
5.7.2.2
Access
Address
Initial Value
Bit Bit name
7 to 4 MAJORREV
3 to 0 MINORREV
HOSTVERSION - Host-I/F version register
This register returns the revision number of the Host CPU I/F.
This register can be read in 8-bit, 16-bit and 32-bit units.
If this register is read 16-bit or 32-bit units the upper bits 15 to 8, respectively 31
to 8, return undefined values.
0000 000C
H
0000 002B . This register is never modified.
H
7 6
MAJORREV
R
Function
Major revision number
Minor revision number
Preliminary User's Manual S19203EE1V3UM00
5 4 3
Chapter 5
2 1 0
MINORREV
R
145