THE 8051 MICROCONTROLLER: THE PROGRAMMER’S PERSPECTIVE 493
What can be done with one bit?
It can be ‘set’ or cleared; there are instructions available which will set or clear each
individual bit of these 16-byte locations, that is, there are 16 × 8 = 128 bit addressable
locations in the internal RAM.
Byte Addressable RAM e rest of the RAM from 30H to 7FH is addressable only as
bytes. ese locations can be read from or written into, using the MOV instruction in
the direct or indirect addressing mode as was seen in Section 12.4.1.3.
13.5 | The 8051 Stack
All processors need a stack. A stack is a portion of memory which can act as a temporary
storage location for data which will be taken back later. e stack is a special type of
data structure, ...