HD6432621 Hitachi, HD6432621 Datasheet - Page 901

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

IMR
Bit
Initial value
Read/Write
:
:
:
—
—
7
1
—
—
6
1
Bus operation interrupt mask
0 Bus operation interrupt request (OVR0)
1
to CPU by IRR12 enabled
Bus operation interrupt request (OVR0)
to CPU by IRR12 disabled
—
—
5
1
Unread interrupt mask
0 Unread message overwrite interrupt
1
request (OVR0) to CPU by IRR9 enabled
Unread message overwrite interrupt
request (OVR0) to CPU by IRR9 disabled
IMR12
R/W
Mailbox empty interrupt mask
0 Mailbox empty interrupt request (SLE0)
1
4
1
to CPU by IRR8 enabled
Mailbox empty interrupt request (SLE0)
to CPU by IRR8 disabled
—
—
3
1
—
—
2
1
IMR9
R/W
1
1
IMR8
R/W
0
1
857