1989_MELPS_7700_Software_Manual

PHB
Push Accumulator B on Stack
PHB
Operation
If m=O,
M(8) (- BH
8(-8-1
M(8) (- BL
8(-8-1
If m=1,
M(8) (- BL
8(-8-1
Description
8aves the contents of the accumulator B to the address indicated by the stack
pointer 8. When the data length selection flag m is set to 0, the accumulator B's
upper byte is saved on the stack first and then the lower byte. When the data
length selection flag m is set to 1, only the accumulator B's lower byte is saved
on the stack.
Status flags
Not affected.
Addressing mode Syntax Machine code Bytes Cycles
Stack PHB 4216, 4816 2 6
109