Subroutine name
and address
(in hexadecimal)
CALL HLHEX
$0614
CALL
CURSR
$0B2C
Function
When
the
4 successive bytes
of
data contained in
the
area
starting
at
the
address indicated in
the
DE register are an
ASCII code string representing a 4 digit hexadecimal num-
ber, this subroutine sets
the
4 digit hexadecimal number in
the
HL register and returns control
to
the
calling program.
If
the
ASCII code string does
not
represents a 4 digit hexa-
decimal number, this subroutine sets
the
C flag
to
1 and
returns control
to
the
calling program. In this case,
the
A
register contents are undefined.
For
example, when $33, $30, $43 and $39 are stored in
successive areas starting at
$8000, $30C9
is
set in
the
HL
register
by
executing.
LD DE,
8000H
CALL 0614H
Sets
the
Video-RAM address corresponding
to
the
current
cursor position in the HL register.
For
example, when
the
cursor
is
in
the
home position
(upper left comer),
$DOOO
is
set in
the
HL register.
Number
of
Stacks
4
2
19
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