CP TERM HILIGHT ON causes first & last row screen corruption on model 3 (32 line) screen

[swhobbit]

CP TERM HILIGHT ON causes first & last row screen corruption on model 3 (32 line) screen

Environment

CP Q CPLEVEL
SYSTEM 3033-A
VM/370 Release 06 Hercules "SixPack" version 1.3: 01/04/23 14:09:00
IPL at 10:27:02 PST THURSDAY 01/05/23

Port used logon generated as:

RDEVICE ADDRESS=(0C0,16),DEVTYPE=3278,MODEL=DYNAMIC

Client:

Reproduction

Steps:

• LOGON to host VM system using a x3270 -model 3 (with 32 lines)
• Issue command CP TERM HILIGHT ON
• Press PA2 or CLEAR keys to clear the output area of the screen
• Issue command LIST PROFILE EXEC * (DATE
• View result

Expected (correct) result

• LIST PROFILE EXEC * (DATE is echoed on the top line of screen, highlighted.
• The final character on screen is blank (row 32, column 80) remains blank

Note: This error does not occur on a 3270 model 4 (43 line screen).

Observed (error) Result

• The command is not highlighted.
• The first 16 characters of the command are not shown (only C * (DATE is visible)
• The final character of the screen, to right of the system name (row 32, column 80), has a garbage character in it.

[BobBolch]

Hi Drew, I reproduced these same symptoms on my emulator (Bluezone Mainframe Display from Rocker Software). I had only used Mod2, 4, and 5 setups in the past, but never Model 3. I need to recover my second level VM test environment, to trace what's happening.

Bob

[swhobbit]

@BobBolch wrote:

I had only used Mod2, 4, and 5 setups in the past, but never Model 3.

Model 4 (43 lines) has a different bug, you probably want to look at that in concert. See #90