Command Format - IBM 6400 Programmer's Reference Manual

Command Format

Command Format
All the printer commands use the following format:
The following chart shows the purpose of each field:
Table 5 (Page 1 of 2). IPDS Command Format
Byte Hex Code
0-1 X 0005
'
Length
2-3
Command X D603
'
X ' D61D
X ' D62D
X D633
'
X D63D
'
X D63F
'
X D64D
'
X ' D64F
X ' D65D
X D65F
'
X D66D
'
X D66F
'
X D67D
'
X ' D67F
X ' D680
X D681
'
X D684
'
X D685
'
X D68F
'
X ' D697
X ' D69F
X D6AF
'
X D6BF
'
X D6CF
'
X D6DF
'
X ' D6E4
X ' D6EF
4
Flags
5-6 X 0000
'
Correlation ID
26
6400 IPDS
Length Command Flag
Description
- X 7FFF
' ' '
No Operation
'
' Load Equivalence
' Write Text
Execute Order Anystate
'
Write Image Control
'
Load Font Equivalence
'
Write Image
'
' Deactivate Font
' End
Begin Page Segment
'
Logical Page Position
'
Deactivate Page Segment
'
Include Overlay
'
' Include Page Segment
' Write Bar Code Control
Write Bar Code
'
Write Graphics Control
'
Write Graphics
'
Execute Order Homestate
'
' Set Home State
' Load Copy Control
Begin Page
'
End Page
'
Logical Page Descriptor
'
Begin Overlay
'
' Sense Type and Model
' Deactivate Overlay
Bit 0
0 = Acknowledge Response Not Required
1 = Acknowledge Response Required
Bit 1
0 = Correlation ID Not Included
1 = Correlation ID Included
Bit 2
0 = Acknowledge Reply Response is Complete
1 = Second Buffer of XOH - OPC Reply Required
Bit 3 - 6-Reserved (Always Zero)
Bit 7 (NDS DSC mode only)
0 = End Persistent NACK
1 = Persistent NACK
-X FFFF
' ' '
Correlation ID
(Optional)
Data
Error Code
X 0202..02
' '
X 8001..00
' '
X ' 0204..02 '