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Furthur README.md reformatting

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Mark Pizzolato 2013-01-27 10:53:59 -08:00
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@ -44,8 +44,12 @@
Outgoing connections per line (virtual Null Modem cable).
#### Asynchronous I/O
* Disk and Tape I/O can be asynchronous. Asynchronous support exists for pdp11_rq, pdp11_rp and pdp11_tq devices (used by VAX and PDP11 simulators).
* Multiplexer I/O (Telnet and/or Serial) can be asynchronous. Asynchronous support exists for console I/O and most multiplexer devices.
* Disk and Tape I/O can be asynchronous. Asynchronous support exists
for pdp11_rq, pdp11_rp and pdp11_tq devices (used by VAX and PDP11
simulators).
* Multiplexer I/O (Telnet and/or Serial) can be asynchronous.
Asynchronous support exists for console I/O and most multiplexer
devices. (Still experimental - not currently by default)
#### Disk Extensions
RAW Disk Access (including CDROM)
@ -65,17 +69,46 @@
The following extensions to the SCP command language without affecting prior behavior:
GOTO <Label> Command is now available. Labels are lines in which the first non whitespace character is a “:”. The target of a goto is the first matching label in the current do command file which is encountered. Since labels don’t do anything else besides being the targets of goto’s, they could be used to provide comments in do command files, for example (“:: This is a comment”)
SET ON Enables error trapping for currently defined traps (by ON commands)
SET NOON Disables error trapping for currently defined traps (by ON commands)
RETURN Return from the current do command file execution with the status from the last executed command
RETURN <statusvalue> Return from the current do command file execution with the indicated status. Status can be a number or a SCPE_<conditionname> name string.
ON <statusvalue> commandtoprocess{; additionalcommandtoprocess}
Sets the action(s) to take when the specific error status is returned by a command in the currently running do command file. Multiple actions can be specified with each delimited by a semicolon character (just like breakpoint action commands).
ON ERROR commandtoprocess{; additionalcommandtoprocess}
Sets the default action(s) to take when any otherwise unspecified error status is returned by a command in the currently running do command file. Multiple actions can be specified with each delimited by a semicolon character (just like breakpoint action commands).
ON <statusvalue>
ON ERROR Clears the default actions to take when any otherwise unspecified error status is returned by a command in the currently running do command file.
GOTO <Label> Command is now available. Labels are lines
in which the first non whitespace character
is a “:”. The target of a goto is the first
matching label in the current do command
file which is encountered. Since labels
don’t do anything else besides being the
targets of goto’s, they could be used to
provide comments in do command files, for
example (“:: This is a comment”)
SET ON Enables error trapping for currently defined
traps (by ON commands)
SET NOON Disables error trapping for currently
defined traps (by ON commands)
RETURN Return from the current do command file
execution with the status from the last
executed command
RETURN <statusvalue> Return from the current do command file
execution with the indicated status. Status
can be a number or a SCPE_<conditionname>
name string.
ON <statusvalue> commandtoprocess{; additionalcommandtoprocess}
Sets the action(s) to take when the specific
error status is returned by a command in the
currently running do command file. Multiple
actions can be specified with each delimited
by a semicolon character (just like
breakpoint action commands).
ON ERROR commandtoprocess{; additionalcommandtoprocess}
Sets the default action(s) to take when any
otherwise unspecified error status is returned
by a command in the currently running do
command file. Multiple actions can be
specified with each delimited by a semicolon
character (just like breakpoint action
commands).
ON <statusvalue>
ON ERROR Clears the default actions to take when any
otherwise unspecified error status is
returned by a command in the currently
running do command file.
Error traps can be taken for any command which returns a status other than SCPE_STEP, SCPE_OK, and SCPE_EXIT.