Radio Shack TRS-80 Owner's Manual page 99

TRSDOS
Entry Conditions
(DE)
=
DCB
CALL SPOSEOF
Exit
Conditions
z
=
Good
file
specification
nz
=
Bad
file
specification
$SYNTAX—
17436/X
9 441C 9
Move
a
file
specification to
dcb. This routine takes a
file
specification
and
checks
it
for validity
and
moves
it
to a
dcb
so
that
the
file
may
be opened.
Entry
Conditions
(HL)
=
Filename
(DE)
=
DCB
CALL SSYNTAX
Exit
Conditions
z
=
Good
file
specification
nz
=
Bad
file
specification
$DIVIDE™~
17489/X
?
4451
9
The divide routine takes a 16-bit
dividend and an eight-bit divisor.
After
division, the
quotient replaces the 16-bit
dividend and the
remainder replaces the
eight-bit divisor.
Entry Conditions
hl
=
Dividend
a
=
Divisor
call
sdivide
Exit
Conditions
hl
=
Quotient
a
=
Remainder
(0 indicates
no
remainder).
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