10

Rev. C - 15 January, 2001

TS80C31X2

Table 4. AUXR1: Auxiliary Register 1

Reset Value = XXXX XXX0

Not bit addressable

Application

Software can take advantage of the additional data pointers to both increase speed and reduce code size, for

example, block operations (copy, compare, search ...) are well served by using one data pointer as a ’source’

pointer and the other one as a "destination" pointer.

7

6

5

4

3

2

1

0

-

-

-

-

-

-

-

DPS

Bit

Number

Bit

Mnemonic

Description

7

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

5

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

4

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

3

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

2

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

1

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

0

DPS

Data Pointer Selection

Clear to select DPTR0.

Set to select DPTR1.