Rabbit 2000, Instruction & Reference Manual

Page: 112 / 174

108 Rabbit 2000/3000 Microprocessor
Description
Loads the memory location with the address 1 less than the data in the SP with the high order byte of the data
in zz (any of AF, BC, DE, or HL), and loads the memory location with the address two less than the data in
SP with the low order byte of the data in zz. Then SP is decremented twice.
PUSH zz
Opcode Instruction Clocks Operation
——
F5
C5
D5
E5
PUSH zz
PUSH AF
PUSH BC
PUSH DE
PUSH HL
10 (2,2,3,3)
10 (2,2,3,3)
10 (2,2,3,3)
10 (2,2,3,3)
10 (2,2,3,3)
(SP - 1) = zz
(high)
; (SP - 2) = zz
(low)
;
SP = SP - 2
(SP - 1) = A; (SP - 2) = F; SP = SP - 2
(SP - 1) = B; (SP - 2) = C; SP = SP - 2
(SP - 1) = D; (SP - 2) = E; SP = SP - 2
(SP - 1) = H; (SP - 2) = L; SP = SP - 2
Flags ALTD I/O
S Z L/V C F R SP S D
- - - -