Zilog Z80380 Manuel d'utilisateur Page 170

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Vue de la page 169
5-136
Z380
USER'S MANUAL
DC-8297-03
ZILOG
PUSH
PUSH IMMEDIATE
PUSH src src = IM
Operation: if (LW) then begin
SP SP - 4
(SP) src(7-0)
(SP+1) src(15-8)
(SP+2) src(23-16)
(SP+3) src(31-24)
end
else begin
SP SP - 2
(SP) src(7-0)
(SP+1) src(15-8)
end
The Stack Pointer (SP) is decremented by two (by four in Long Word mode) and the source
is loaded into the memory locations addressed by the SP in ascending byte order in
ascending address memory locations.
Flags: S: Unaffected
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Addressing Execute
Mode Syntax Instruction Format Time Note
IM: PUSH nn 11111101 11110101 -n(low)- -n(high) 3+w I, L
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