Vector Graphic Extended Systems Monitor Manual de usuario descargar pdf (Pagina 22)

Vector

RAID

Reference

Manual

2.

7

Flags

and

registers

Next

to

the

instruction

area

of

the

display,

there

are

a

group

of

areas

which

display

the

contents

of

all

the

Z-80

registers

am

flags.

The

Ie

f

t-hand

side

of

this

area

shows

the

main

flags

and

reg~ters,

the

next

section

shews

the

alternate

flags

and

registers,

arx:1

the

third

section

shows

the

contents

of

the

X

register,

the

Y

register,

the

I

register,

and

the

interrupt"

flag.

The

top

line

sOOws

the

flags,

indicated

by

"Fft

an:]

ftF'".

On

this

line,

if

,any

flag

is

set,

its

symbol

will

,appear,

otherwise

the

symbol

will

not

be

visible.

'!be

synt:ols

are:

symOOl

s

Z

H

P

N

C

flag

sign

zero

half-carry

parity

add/subtract

carty

The

contents

of

each

register

are

shown as a

hexadecimal

byte

next

to

the

register-

syrrbol.

Further,

the

contents

of

the

A

an:]

A'

registers

is

shown

as

an

ASCII

equivalent,

between

double

quotes.

Last,

the

contents

of

the

rrerory

addresses

p:>inted

to

by

the

register

pairs

BC, DE, HL,

BC',

DE',

and

HL'

are

given

in

parenthesis

next,

to

the

C,.

E,

L,

C',

E',

and

L'

register

contents

respectively.

The,

contents

of

the

X,

Y,

and

I

registers

appear

in

hexadecimal

notation

directly

beneath

the

register'

symbols.

The

status

of

the

interrupt"

flag

appears

below

the

contents:

of

the'I

register',

between

parentheses,

with

(di)

indicatin;;

interrupts

are

disabled,

arx:1

(ei)

irrlicatin:r

they

are

enabled.,

2-8

Rev.

l.l-A

5/30/80

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