Hello,
WinUAE settings are correct for a basic A500. To try to find an answer, I tested several cracked versions and some do not pass with only 512 Kb. The loading stops at the same place as the version in IPF with a black screen.
OK with 512 Ko:
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https://www.planetemu.net/rom/commod...fs-t-2-trilogy
https://www.planetemu.net/rom/commod...ocean-cr-qtx-7
https://www.planetemu.net/rom/commod...-cr-qtx-m-clan
NOK with 512 Ko:
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https://www.planetemu.net/rom/commod...ocean-cr-acc-4
* Version with the "byte bandit virus" *
https://www.planetemu.net/rom/commod...-v-byte-bandit
There must be two versions published at the time, one for 512 KB only (which I had cracked in 1990) and another requiring 512 KB of Chip + 512 KB of Slow. Is it intentional or just an error during the compilation, you should ask Michel Janicki if he remembers it.