Command

Description

cmdtgt

Specify the command target

herc

Send Hercules command

scp

Send system control program command

pscp

Send system control program priority message

sf+

Create a new shadow file

sf-

Delete a shadow file

sfc

Compress a shadow file

sfd

Display shadow file statistics

sfk

Perform a chkdsk on the active shadow file

t{+/-} CKD

Turn CKD_KEY tracing on / off

t{+/-} dev

Turn CCW tracing on / off

s{+/-} dev

Turn CCW stepping on / off

f{+/-} addr

Mark frames usable / unusable

Table 17: Hercules Console Commands (grouped by functionality)

8. Console Command Descriptions

8.1 !message (SCP priority message)

8.1.1 Function

The “!message” (SCP) command is used to enter a system control program (i.e. guest operating system)
priority command on the hercules console. The command to be issued has to be prefixed with an excla-
mation point '!'.

This command is similar to the “.reply” command. It is up to the operating system to differentiate between
them.

8.1.2 Syntax

Descriptive

!prio_msg

Diagram

Êʬ¬¬ !prio message ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ÊÍ

8.1.3 Parameter

prio_msg

The priority message that will be routed to the system control program running un-
der the Hercules Emulator.

8.1.4 Examples

For a similar sample please see the “.reply” command.