Rainbow Electronics T89C5121 - Manual (Page 59)

59
A/T8xC5121
4164G–SCR–07/06
Table 43. AUXR1 Register
AUXR1 - Dual Pointer Selection Register (A2h)
Reset value = XXXX XXX0b
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 1
Clear to select DPTR0 as Data Pointer.
Set to select DPTR1 as Data Pointer.