No Operation (Nop); Overstrike (Ovs) - IBM 6400 Programmer's Reference Manual

Presentation Text Command Set
Table 55 (Page 2 of 2). End Suppression
Byte Value
3
X F4
' '
X F5
' '
4 X 01
' '

No Operation (NOP)

This control specifies a string of bytes that the printer ignores. The printer
ignores all parameter data. The data field can be a maximum of 253 bytes.
Table 56. No Operation
Byte Value
0-1 X 2BD3
'
2 X ' 02 '
3
X ' F8 '
X ' F9 '
4-255

Overstrike (OVS)

This control identifies text that the printer overstrikes with a specified character.
The overstrike character prints using the font and character set that is active
when the printer receives the Overstrike command.
Note: If bit 7 is on, the printer treats all other bits in byte 4 as zeros, regardless
of their values.
An OVS command with a bypass value of 00 ends overstrike mode.
Table 57 (Page 1 of 2). Overstrike
Byte Value
0-1 X 2BD3
'
2 X ' 05 '
3
X 72
' '
X ' 73 '
68
6400 IPDS
Description
End Suppression
Unchained
Chained
- X FF Suppression ID
' '
Description
Text Control Escape Sequence
'
- X ' FF ' Length
No Operation
Unchained
Chained
Data (Ignored)
Description
Text Control Escape Sequence
'
Length
Overstrike
Unchained
Chained
Error Code
X 0202..01
' '
X 0204..01
' '
X 0298..01
' '
Error Code
X ' 021E..01 '
Error Code
X ' 021E..01 '