Abov MC97F60128 - Page 76

76
MC97F60128
ABOV Semiconductor Co., Ltd.
MEXSP (Memory Extension Register Stack Pointer) :97H
7
6
5
4
3
2
1
0
–
MEXSP6
MEXSP5
MEXSP4
MEXSP3
MEXSP2
MEXSP1
MEXSP0
–
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
MEXSP[6:0]
Memory Extension Stack Pointer
NOTE)
1. This register is the memory extension stack pointer. It provides for a stack depth of up to 128
bytes
(Bit 7 is always 0). It is pre-incremented by call instructions and post-decremented by return instructions.