82091AA Datasheet, PDF (83/204 Pages) Intel Corporation – ADVANCED INTEGRATED PERIPHERAL (AIP)

82091AA
6 1 3 7 ECPCFGA ECP Configuration A Register (ECP Mode)
I O Address
Default Value
Attribute
Size
Base ^a400h and (ECR 7 5 ^e111)
1001 RRRR
Read Write
8 bits
The ECPCFGA Register provides information about the ECP mode implementation Access to this register is
enabled by programming the ECR Register (ECR 7 5 ^e111)
290486 – 36
Figure 36 ECP Configuration A Register (ECP Mode)
Bit
Description
7 4 IMPLEMENTATION IDENTIFICATION (IMPID) This field is hardwired to 1001 to indicate an 8-bit
implementation (bit 4) and an ISA-style interrupt (bit 7) This field is read only and writes have no
affect
3 0 RESERVED
83