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ZiLOG Z8 Technical Manual

ZiLOG Z8
166 pages
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El
Instruction
forant:
ope
Operation:
Flags:
Example:
Cycles
6
IMR
(7)
<-- 1
EI
Enable Interrupts
ope
(Hex)
9F
Bit
7
of
control
register
251
(the
Interrupt
Mask
Register)
is
set
10
to
1. This
allows
any
potentially
enabled
interrupts
to
become
enabled.
No
flaqs
affected
If
control
register
251
contains
%OA
(00001010,
that
is,
interrupts
IRQ1
and
IRQ3
potentially
enabled),
the
statement
EI
sets
control
register
251
to
%8A
(10001010) and
enables
these
interrupts.
5-21

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ZiLOG Z8 Specifications

General IconGeneral
BrandZiLOG
ModelZ8
CategoryDesktop
LanguageEnglish

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