Rabbit 2000 - Page 80

76 Rabbit 2000/3000 Microprocessor
Description
Loads the memory location with the address 1 less than the data in the Stack Pointer, SP, with the high order
byte of the data in word register zz (any of the word register AF, BC, DE, or HL), and loads the memory loca-
tion with the address two less than the data in SP with the low order byte of the data in zz. Then SP is decre-
mented 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
- - - -