IT9919 Hacking - part 4 - Diving into the boot ROM


Aug 25, 2019
In this series I will be hacking around with the IT9919 media processor that powers the Lenkeng LKV373 HDMI Extender Device and the EZCAP 283S which were reviewed in previous videos.

In this video I investigate the booting mechanism to try and uncover the mystery of the SMAZ compressions scheme and checksum.

Call Graph

Functions are labelled with: address, number of instructions, presence of SMED(IA02) and SMAZ comparisons, and register accesses.

Flash Loader Function