HP Series 37 Reference Manual page 38

Softpanel
6. In the Softpanel, the T (Trace) command will print the last user stack if the current stack is the ICS,
but there is no way to use the ENV command to move back to the user stack.
7. In the Softpanel, using the RIO command to a non -existent register produces a watchdog timer
interrupt, and the console comes back to the Maintenance Mode prompt.
8. In the Softpanel, the RTOC command issued to values outside the range $0 to $1 F will return some
value. It seems to be the TOC register address modulo $20 (decimal 32). (i.e. RTOC $5, RTOC $25,
RTOC $45, etc. all return the value from TOC register 5).
9. In the Softpanel, the Help text makes reference to a DZ register. DZ really refers to the Z register in
this line.
10. The switch register (SR) is not in the default register display. It may be displayed manually.
II. In the Software Display, the status register flags M, I, T, R, 0, and C indicate a value of I with an
upper case letter and a value of 0 with a lower case letter.
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