EM3270 Manual

EM3270 Emulation Description

Tandem EM3270 Manual—110332 A-5

IBM Host to Tandem Printer Translation

For IBM 328x printer emulation, the commands issued by the IBM host application are

handled as described in Table A-5.

During IBM 328x printer emulation, the WCC character that follows the Write,

Erase/Write, and Erase/Write Alternate commands is handled as described in Table A-6.

Table A-5. Translation of IBM Printer Commands

Command EM3270 Emulator Action

Copy Not supported.

Erase All

Unprotected

Not supported.

Write Fully supported. See specific handling of printer orders and

WCC bits below.

Erase/Write Fully supported.

Erase/Write

Alternate

Partially supported. This command is handled the same as

Erase/Write. The alternate buffer sizes are not supported.

Read Buffer Ignored.

Read Modified Ignored.

Read Modified All Ignored.

All Select

commands

Ignored.

No Operation Ignored.

Sense Ignored.

Table A-6. WCC Character Translation (328x Printer Emulation)

WCC Bit EM3270 Emulator Action

Bit 0 - Unused Ignored.

Bit 1 - WCC Reset Bit Not supported.

Bits 2-3 - Printout Format Fully supported.

Bit 4 - Start Printer Not supported.

Bit 5 - Sound Alarm Not supported.

Bit 6 - Keyboard Restore Ignored.

Bit 7 - Reset MDT Bits Ignored.