Difference between revisions of "AND"
(Created page with "= {BA} {{IE_BA}} = AND bitwise operand on the current value and the immediate. See Also: {B0} {{IE_B0}} ― {B2} {{IE_B2}}...") |
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= {BA} {{IE_BA}} = | = {BA} {{IE_BA}} = | ||
| − | + | {{IE_BA_ex}} | |
| + | {{IE_BA_desc}} | ||
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| + | See also: [[Event_Instruction_BB|{BB} {{IE_BB}}]] ― [[Event_Instruction_BE|{BE} {{IE_BE}}]] | ||
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| + | == Variable : Half-Word (hex) == | ||
{{Variables}} | {{Variables}} | ||
{{Immediate}} | {{Immediate}} | ||
Latest revision as of 05:02, 23 February 2021
{BA} AND
AND(xVARI,xVALU)
AND bitwise operand | Variable = Variable AND ImmediateValue
This command compares the individual bits of the value within a Variable and a specific ImmediateValue, and produces a single binary output. This makes this a good way to disable a specific bit within a byte without changing the rest of the bits.
With AND, the resulting bit outputs are set to 1 (TRUE) only if both values' bit inputs are 1.
The bits available within a single byte are:
- 0x80
- 0x40
- 0x20
- 0x10
- 0x08
- 0x04
- 0x02
- 0x01
So, for example, if you want to edit a unit's Battle Stats to remove the Dead status (which is bit 0x20), but leave their other statii unchanged, you would UnitAddress their Unit ID, LoadAddress their stats at 0x0058 & 0x01BB into temporary variables (let's say 0x0070 & 0x0071), and then run AND(x0070,x00DF) and AND(x0071,x00DF), before using SaveAddress to put the corrected values back. Because the Dead status is in bit 0x20, a value of DF means that every bit except 0x20 is set to 1. As a result, the other statii in that byte will remain unchanged, but by forcing 0x20 to be set to 1 in the ImmediateValue, it will zero out the Dead bit in the final result.
See also: {BB} ANDVar ― {BE} ZERO
Variable : Half-Word (hex)
Click here for the list of Variables
Immediate Value : Half-Word (hex)
Value that will be use along with the operand to change the address' value.
