: Setting the TryHarder flag to true instructs the library to spend more CPU time looking for a barcode, which can significantly improve recognition for difficult or blurry images.
A brief note – in totally different contexts, "ZX decoder" may also refer to Zebra Crossing (ZXing), an open-source barcode/QR code decoding library. If you landed here searching for barcode scanning, that is the library (notice the missing space). However, for 95% of retro computing usage, "ZX decoder" means Sinclair ZX Spectrum tape decoding. zx decoder
DECODE_LOOP: LD A, (HL) ; fetch encrypted byte XOR KEY_TABLE ; XOR with current key (or simple XOR A) LD (DE), A ; store decrypted byte : Setting the TryHarder flag to true instructs