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Feature #65

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Lua: bit operations

Added by I. Valentin about 3 years ago. Updated about 3 years ago.

Status:
In Progress
Priority:
Normal
Assignee:
I. Valentin
Category:
Lua scripts
Target version:
v0.2.0
Start date:
2022-11-27
Due date:
% Done:

70%

Estimated time:

Description

Lua 5.1 doesn't provide bitwise operations.

Implements some basic ones manually: and, or, xor and left and right bit shift.

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 #1

Updated by I. Valentin about 3 years ago

  • Description updated (diff)
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 #2

Updated by I. Valentin about 3 years ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 70

As of 026c976, the following functions have been implemented in Lua scripts:

  • bit_or(a, b)
  • bit_xor(a, b)
  • bit_and(a, b)
  • get_byte_nth_bit(value, n)
  • set_byte_nth_bit(value, n, bit)

Also, the following ones to directly read and write from and to data banks:

  • get_bank_bit(bank, address, bit)
  • set_bank_bit(bank, address, bit)

The installer stills generates some operations with the invalid operators "&", "^" and "|", so some field map scripts aren't loadable because of the invalid syntax.

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