Using the latest firmware and bitstream on a Blue & White PowerMac G3 with a Sonnet TempoATA133 add-in PCI card, which uses a version of the Promise PDC29269M, which contains OpenFirmware bootable fcode, I'm able to reliably reproduce a crash when attempting to boot from an emulated ISO of MacOS 9.2.1. The exact same ZuluIDE, config, and ISO work fine when attached to the on-board secondary IDE interface of the B&W PowerMac G3, and I'm able to successfully boot off the CD.
Using the latest firmware and bitstream on a Blue & White PowerMac G3 with a Sonnet TempoATA133 add-in PCI card, which uses a version of the Promise PDC29269M, which contains OpenFirmware bootable fcode, I'm able to reliably reproduce a crash when attempting to boot from an emulated ISO of MacOS 9.2.1. The exact same ZuluIDE, config, and ISO work fine when attached to the on-board secondary IDE interface of the B&W PowerMac G3, and I'm able to successfully boot off the CD.