Advertisement
APPENDIX
J
MDOS 3.00
Di~~e~ences
loeSBE)'
Thus#
the
user
must
check
lOeSBI
to
determine the end
or
the data in the
bUTfer
and
to
calculate the number of sectors read.
The
.PUTLS
function
will
write
the
logically
contiguous sectors from IOCSBS
through
lOeSB!
r~om
the
buffer
to
the file starting at IOCLSN.
IOCMLS
and IOCLSN are updated as
expectedl
and
additional
space may have been allocated.
J.2 Enhancements to MOOS 2.20/2.21
MDOS 2.20
~as
released to support the dual
memor~
map of
the EXORciser
I I
system.
Other enhancements,
ho~everl
were
added
to
the
MDOS commands at the same time.
MDOS 2.21
is
almost identical toMDOS 2.20.
A change was
implemented
to
aid
in
the
proper
sizing
or
contiguous
memory
during
initialization when running with the
USE
module.
1.
A
ne~
command} ROLLOUT, was added to the standard
2.
command
pac
kage.
ROLLOUT
,allOWS
the
user to
write blocks of
m~mory
to a diskette.
A new command, ECHO, was added
to
the
command
package.
ECHO
allows'
users
EXORciser
I I
system
to
ecno
all
input/output to a line printer
standard
with
an
console
3.
The
Bootb loc
k
program
may generate a new el''rOl'
message:
EM.
This
message
indicates
that
insufficient
contiguous
RAM
exists in the system
to load the resident MDOS.
4.
When
MDOS 2.20
or
2.21
ini tial
i
z es via
the EBOOi G
or
MDOS
command
to the debug monitorl
it sizes
memory using a technique that will
not
change the
contents
of
memory.
Thusl
pl'ogl'ams can be loaded
above MDOS,
the system reinitialized, and another
program loaded with the first program image still
intact
~n
memo'rY (first program must
load
above
MDOS command interpreter and LOAD command),
5.
The
FR EE
comma n d
can
b e
i n v
0
ked
wit
h
the "L
II
option,
causing its output to be directed to
the
line printer.
6.
The
REPAIR
command will default to drive z e'r
0
if
no
logical
unit
number
is
specified.
In
addition,
if- a
file
with
"a
RIB error is not
deleted,
the user will not be able to update
the
CAT
on diskette.
A
message
is
displayed to that
effect
during
the
last
phase
of
the
REPAIR
process.
/
. /
)
"" -
-
-
I
J"O,' "
Advertisement
