AMD Am186 ES, User Manual, Page: 65 / 192

Peripheral Control Block 4-5
4.1.3 Processor Release Level Register
(PRL, Offset F4h)
The Processor Release Level register (Figure 4-3) is a read-only register that specifies the
processor version.
Figure 4-3 Processor Release Level Register
Bits 15–8: Processor Release Level (PRL)—This byte returns the current release level
of the processor, as well as the identification of the family member. The Am186ES and
Am188ES microcontrollers’ revision A PRL is 10h.
Bits 7–0: Reserved
Table 4-2 Processor Release Level (PRL) Values
PRL Value Processor Release Level
10h A
11h B
12h C
13h D
14h E
15
7 0
Reserved
PRL