Differences

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--- ff3:ff3us:doc:snes:opcode [2016/03/06 19:18]
hatzen08 [TRB, TSB]
+++ ff3:ff3us:doc:snes:opcode [2022/09/21 18:38] (current)
strotlog undo incorrect changes to c flag: c=1 carries in a 1 in adds; c=1 is set by overflowing
@@ Line 251: / Line 251: @@
 ===== BIT =====
-Does a binary AND between the A or C register and the memory. Unlike the AND opcode, the binary AND operation only is done for the bits sets in the A or C register. All clear bits in the A or C register will be left clear after the operation.
+Does a binary AND between the A or C register and the memory. Unlike the AND opcode, the binary AND operation doesn't alter the A or C register.
 ^flags                                                  ^
@@ Line 289: / Line 289: @@
 |   D9      |CMP addr,Y     |   3   |                                       |
 |   DD      |CMP addr,X     |   3   |                                       |
-|   DF      |CMP long,X     |   2   |                                       |
+|   DF      |CMP long,X     |   4   |                                       |
 ^  Opcode   ^Syntax         ^ Bytes ^Notes                                  |