Online ZShell School (lesson #4)

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Online ZShell School (lesson #4)
From: "Thomas J. Hruska" <thruska@TIR.COM>
Date: Sun, 29 Jun 1997 16:15:04 -0400
Reply-To: "Thomas J. Hruska" <thruska@TIR.COM>

Hello,

  I am just learning Z80 assembler and I am wondering if the following code
from the Online ZShell School (lesson #4) is correct:

RRHL:    ; Rotate HL right (16 bit rotation)
  srl h
  rr l
  ret nc
  set 7,h
  ret

On the "rr l" line, can the carry flag be changed?  From the documentation
I have, it appears that it could.  Am I wrong?  If so, why?

BTW, I have only spent 2 1/2 hours studying the documents and I am almost
to lesson #5.

Signed,
Thomas J. Hruska

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