HP 3000 Manuals HP 3000 Manuals
Appendix C 3270 Bit Assignment and Character Translation Tables
This appendix contains the following tables related to 3270 data stream
communication:
1. 3270 Write Control Character (WCC) bit assignment.
2. Attention ID (AID) codes generated by SNA IMF.
3. 3270 command codes for IBM control units.
4. Bit assignment for the 3270 Field Attribute Character.
5. 3270 buffer control orders.
Information about ASCII and EBCDIC character translation tables and HP
3000 Native Language Support (NLS) is also provided at the end of this
appendix.
Table C-1. 3270 Write Control Character Bit Assignment
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| |
| Bits Meaning |
| |
| 0 Value is determined by the contents of bits 2-7. |
| |
| 1 RESERVED Always a 1. |
| |
| 2-3 Line length Defines line length in printout as follows: |
| |
| 00 = 132-character line when orders are not present. |
| The NL, EM, and CR orders in the data stream |
| determine printed line length. |
| 01 = Printed line is 40 characters. |
| 10 = Printed line is 64 characters. |
| 11 = Printed line is 80 characters. |
| |
| 4 Start printer When set to 1, bit 4 starts printing at the completion of the write |
| operation. |
| |
| 5 Alarm When set to 1, bit 5 sounds an alarm at a selected output device as |
| soon as an operation ends. |
| |
| 6 Keyboard enable When set to 1, bit 6 reenables the keyboard of a selected device so |
| that it will accept input. |
| |
| 7 MDT reset When set to 1, bit 7 resets all modified data tag (MDT) bits in the |
| data in the existing buffer of the selected device before writing any |
| data or executing any orders. |
| |
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Table C-2. Attention ID Codes Generated by SNA IMF
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| |
| AID Decimal Code ASCII Code EBCDIC Code Graphic Character |
| (Octal/Hex) (Hexadecimal) |
| |
| ENTER 39 047/27 7D ' (Apostrophe) |
| |
| PF 1 49 061/31 F1 1 |
| |
| PF 2 50 062/32 F2 2 |
| |
| PF 3 51 063/33 F3 3 |
| |
| PF 4 52 064/34 F4 4 |
| |
| PF 5 53 065/35 F5 5 |
| |
| PF 6 54 066/36 F6 6 |
| |
| PF 7 55 067/37 F7 7 |
| |
| PF 8 56 070/38 F8 8 |
| |
| PF 9 57 071/39 F9 9 |
| |
| PF 10 58 072/3A 7A : |
| |
| PF 11 35 043/23 7B # |
| |
| PF 12 64 100/40 7C @ |
| |
| PF 13 65 101/41 C1 A |
| |
| PF 14 66 102/42 C2 B |
| |
| PF 15 67 103/43 C3 C |
| |
| PF 16 68 104/44 C4 D |
| |
| PF 17 69 105/45 C5 E |
| |
| PF 18 70 106/46 C6 F |
| |
| PF 19 71 107/47 C7 G |
| |
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Table C-2. Attention ID Codes Generated by SNA IMF (cont.)
---------------------------------------------------------------------------------------------
| |
| AID Decimal Code ASCII Code EBCDIC Code Graphic Character |
| (Octal/Hex) (Hexadecimal) |
| |
| PF 20 72 110/48 C8 H |
| |
| PF 21 73 111/49 C9 I |
| |
| PF 22 91 133/5B 4A [ (ASCII) cents |
| (EBCDIC) |
| |
| PF 23 46 056/2E 4B . (period) |
| |
| PF 24 60 074/3C 4C < |
| |
| PA 1 37 045/25 6C % |
| |
| PA 2 62 076/3E 6E > |
| |
| PA 3 44 054/2C 6B , (comma) |
| |
| CLEAR 95 137/5F 6D _ (underscore) |
| |
| SYSTEM REQUEST 48 060/30 F0 0 |
| |
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Table C-3. Command Codes for IBM Control Units
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| |
| Command ASCII Code EBCDIC Code Graphic Character |
| (Octal/Hex) (Hexadecimal) |
| |
| Erase All Unprotected 77/3F 6F ? |
| |
| Erase/Write 65/35 F5 5 |
| |
| Erase/Write Alternate 75/3D 7E = |
| |
| Read Buffer 62/32 F2 2 |
| |
| Read Modified 66/36 F6 6 |
| |
| Write 61/31 F1 1 |
| |
| Read Modified All 76/3E 6E > |
| |
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NOTE SNA IMF does not support the Write Structured Field command.
Table C-4. 3270 Write Control Character Bit Assignment
-------------------------------------------------------------------------------------------
| |
| Bits Field Description |
| |
| 0 Value is determined by the contents of bits 2-7. |
| |
| 1 RESERVED Always a 1. |
| |
| 2 U/P 0 = Unprotected |
| 1 = Protected |
| |
| 3 A/N 0 = Alphanumeric |
| 1 = Numeric |
| |
- -
| NOTE When bits 2 and 3 are both on, an automatic skip occurs. |
| |
- -
| 4-5 D Display indicator |
| 00 = Normal display |
| 01 = Normal display and light pen detectable |
| 10 = Intensified display and light pen detectable |
| 11 = Non-display and non-print |
| |
| 6 RESERVED Set to 0 by the host. |
| |
| 7 MDT Modified data tag (MDT) indicates whether the field associated with |
| this attribute character has been modified. |
| |
| 0 = Field has not been modified. |
| 1 = Field has been modified either by the terminal |
| operator or by the host program when it sent |
| this attribute character to the terminal. |
| |
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Table C-5. 3270 Buffer Control Orders
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| | | | |
| Byte 1 | Byte 2 | Byte 3 | Byte 4 |
| | | | |
---------------------------------------------------------------------------------------------------
| | | | |
| Order Order Code | | | |
| (EBCDIC Hex/ | | | |
| ASCII Hex) | | | |
| | | | |
---------------------------------------------------------------------------------------------------
| | | | |
| Start Field 1D/1D | Field attribute | | |
| (SF) | character | | |
| | | | |
| Set Buffer 11/11 | Address (1st | Address (2nd | |
| Address (SBA) | byte) | byte) | |
| | | | |
| Insert Cursor 13/13 | | | |
| (IC) | | | |
| | | | |
| Program Tab (PT) 05/09 | | | |
| | | | |
| Repeat to Address 3C/14 | Address | Address | Character to be |
| (RA) | (1st byte) | (2nd byte) | repeated |
| | | | |
| Erase Unprotected 12/12 | Address | Address | |
| to Address (EUA) | (1st byte) | (2nd byte) | |
| | | | |
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NOTE SNA IMF does not support the following 3270 buffer control orders:
Start Field Extended
Set Attribute
Modify Field
Graphic Escape