For command-line builds (essential for CI/CD pipelines of legacy projects), set the following:
If you want, I can:
Version 3.47 supported the "Extended Mode" instruction set found in newer PIC18F devices (like the 'K' series, e.g., PIC18F47K53). This utilized a shadow register set and linear data memory access, significantly boosting performance compared to the standard PIC18 instruction set. mplab c18 347 full version best