Keyboard And Mouse Controller; Integrated Device Electronics Register Addresses - DEC Digital Alpha VME 4/224 User Manual

Table 9–10 (Cont.) Super I/O Register Address Space Map
Address Offset
Read/Write
Parallel Port Registers
3BC-R/W
3BD-R
3BE-R/W
3BF
Table 9–11 lists the addresses for the integrated device electronics (IDE)
registers.
Table 9–11 Integrated Device Electronics Register Addresses
Address Physical
Offset Address
1F0 1 C000 3E00
1F1 1 C000 3E20
1F2 1 C000 3E40
1F3 1 C000 3E60
1F4 1 C000 3E80
1F5 1 C000 3EA0
1F6 1 C000 3EC0
1F7 1 C000 3EE0
3F6 1 C000 7EC0
3F7 1 C000 7EE0

9.5 Keyboard and Mouse Controller

CPU Address: 0x1C0000C00 - 0x1C0000C80
Nbus offset: 0x0060 - 0x0064
The keyboard/mouse controller function is contained in a single-chip
microcomputer (Intel 82C42PE) programmed to be IBM PC/AT compatible
and can drive DECpc supported keyboards and a PS/2 type mouse. The keyboard
and mouse ports are female 6-pin mini-DIN, PS/2 type connectors. The keyboard/
mouse controller is programmed to allow either device to operate on either port.
Physical
Address Register
1 C000 7780 Data register
1 C000 77A0 Status register
1 C000 77C0 Control register
1 C000 77E0 None (tristate bus)
Read Function
Data
Error
Sector count
Sector number
Cylinder low
Cylinder high
Drive/head
Status
Alternate status
Drive address
Write Function
Data
Features (write precomp)
Sector count
Sector number
Cylinder low
Cylinder high
Drive/head
Command
Device control
Not used
Nbus 9–21