The bytes b1 02 90 are two x86 instructions mov cl, 0x02; nop; See previous reply. If so, I would start with the first patched ROM the one that sets df[1: Sorry, forgot to update CRC. Would you use Snapchat filters on your dog? Why do you want to avoid the on-board SATA controller? BTW i am trying to set ide mode so i simply changed the 3 instances of b1 to 91 trying to put sata interface into legacy mode and set the checksum. The sum of all bytes in the file should be 0x

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Final configuration PATA not enabled because turning it on causes a hang during boot. Why can it be?. The last byte of the file is used as a checksum. This seems to put the controller in AHCI mode. You can use these HTML tags.

BTW i am trying to set ide mode so i simply changed the 3 instances of b1 to 91 trying to put sata interface into legacy mode and set the checksum. There is indeed a checksum byte.


I have been using it for some time. This changes mov cl, 0x02 to mov cl, 0x Do you have a problem with it?

JMicron JMB Add-on Card AHCI mode « Blog

I also used pcicfg in DOS to check the card was detected. Advice regarding this matter is greatly appreciated. Register Function 43 Defaults to 0x There were problems with OSX with the first patch which is why the second one exists.

I speculate its purpose is to disable the option ROM, allowing the main BIOS to set up the rest of the device configuration without interference. You might try looking through the Linux micrpn sources to see if the driver for the 88SE gives any clues as to how the chip works…. Net cannot verify the validity of the statements made on this site.

Skiprom works best for me in hackintosh. Given my limited abilities to understand hex, I cannot locate where to apply the changes to. They certainly appear to be the same, I have replaced the orom inside the bios of the R3E and the device jmmb36x now running in AHCI mode.

JMicron JMB363 Add-on Card AHCI mode

Actually, there is only one sata connexion, not two. Problems Only modifying register df[1: In no case did setting 0xdf[6] cause the JMB to become a multi-function device. I have two HDD conect.


The problems with configuration register 0x are more problematic. I think what you want is to change b1 02 to b1 Thank you for your time. As for me, I no longer have the card….

JMicron JMB363 eSATA Controller Drivers

Sorry, forgot to update CRC. I wouldn’t want to do anything to my computer that i would later regret. I have read through this page and start to comprehend the edits needed. Only modifying register df[1: They seem important, causing PCI config register bits 0xed[5: With df[6] set, the option ROM does not detect any disks, despite spending several minutes.

I made changes at three locations: