dataddr
flags
ctl
count
is the beginning address of the data to be displayed.
is the standardCCW flag field with the suppress incorrect
length indication (5LI) bit on.
is a control byte that indicates the starting outputdisplaY' line= If the high order bit is on, the entire 3270 output display area is erased before the new data is displayed. A
value ofX'FF' clears the screen, but writes nothing.
is a two byte field indicatingthe number of bytes to be displayed. The 3278-2A display console can display a maximum
of1440 bytes; all other display consoles can display a
maximum of1760 bytes. When the DIAGNOSE is executed with a valid CCW string, a buffer
(whose length is the number of bytes specified by is built in
free storage. The data pointed to by is loaded into the buffer.
Data chaining may be specified in theCCW to link noncontiguous data
areas; however, command chaining is an end of data indication for the
current buffer.Using the starting output line (ctl) and the number of bytes of
output (count),CP checks that the data will fit on the screen. CP then
does the display. A zero condition code indicates theI/O operation
completed successfully; a nonzero condition code indicates anI/O error
occurred.!Qte: An I/O error occurs when the display screen is placed in MORE status and the PA2 key is pressed to allow screen display. DIAGNOSE Code X'5C' --Error Message Editing
Execution ofDIAGNOSE Code X'SC' causes the editing of an error message
according to the user's setting of theEM5G function:
Rx contains the address of the message to be edited.
Ry contains the length of the message to be edited.DMKHVC tests the VMMLEVEL field of the VMBLOK and returns to the caller
with Rx and Ry modified as follows:
,VMMLEVEL 1 Registers on Return I VMMCODE I VMMTEXT 1 Rx Ry 1----1 ON 1 ON 1 no change no change 1----1 ON I OFF 1 no change 10 (length of , , code) I I OFF I ON 1 pointer to text length of text I I part of message alone
1---1OFF I OFF I N/A 0 200 IBM VM/370 System Programmer's Guide
flags
ctl
count
is the beginning address of the data to be displayed.
is the standard
length indication (5LI) bit on.
is a control byte that indicates the starting output
value of
is a two byte field indicating
of
maximum of
(whose length is the number of bytes specified by
free storage. The data pointed to by
Data chaining may be specified in the
areas; however, command chaining is an end of data indication for the
current buffer.
output (count),
does the display. A zero condition code indicates the
completed successfully; a nonzero condition code indicates an
occurred.
Execution of
according to the user's setting of the
Rx contains the address of the message to be edited.
Ry contains the length of the message to be edited.
with Rx and Ry modified as follows:
,
1---1