MODEL
II
TRSDOS
Disk Swap Protection
The
system
now
has
the ability to detect
when
diskettes have
been
swapped
improperly,
that is, while a file is
open.
TRSDOS will display an errormessage when
it detects this
condition,
and
will cancel the read
or
write operation. See VERIFY.
Newor ChangedSupervisor Calls
(SVCs)
These
are
described
in the
new
pages for Section 4.
Name
VDCHAR
PRINIT
PRCHAR
LOOKUP
HLDKEY
OPEN
RENAME
WILD
RAMDIR
SORT
FILPTR
CLRXIT
VIDRAM
PRCTRL
AlBRCV
AlBTX
AlBCTRL
46
Function
Output
a
character
to video
Initialize printer-driverparameters
Output
a
character
to printer
(New)
Lookup
in a table
(New)
Process the
(HOLD)
key
OpenlCreate a
Program
or
Data
File
(New)
Rename
a file
(New)
Process
a wild-card specification
(New)
Read
the directory into a RAM buffer
(New)
Sort
items in RAM list
(New)
Get
information about a currently
open
file
(New)
Execute
CLEAR
command
and
jump
to TRSDOS READY
(New)
Transfer
video to RAM
or
vice-versa
(New)
Control
printer
operations
Receive
character
via
Channel
AlB
Transmit
character
via Channel
AlB
(New)
Control
Channel
AlB
Code
8
17
18
28
29
40
47
51
53
56
58
57
94
95
96/98
97/99
1001101
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