1. The UNIX stream editor.
2. A 6502 instruction that clears the D (decimal mode) flag. Use this before an ADC or SBC to get binary-coded decimal arithmetic (if your 6502 version supports it).
- Function: 1 => D
- Updates flags: . . . . D . . .
- Opcode number: impl $F8
This instruction works whether or not the particular 6502 model actually implements decimal mode ADC and SBC. (For instance, the 2A03 lacks it.)
As opposed to: CLD
See also: 6502 instructions | 6502 addressing modes