My computer is dual boot, XP and Windows 7. Final configuration PATA not enabled because turning it on causes a hang during boot. Thus it seems like setting 0x41[7: Both ports on Motherboard. This seems to put the controller in AHCI mode. Those connected at boot were not detected. 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.

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Linux sets register 0x41 to 0xa1, while the option ROM will set it to 0xf1 or 0x The last byte of the file is used as a checksum. This changes jm363 cl, 0x02 to mov cl, 0x From the CD it installed the driver but does not recognize any drives attached to the controller card. Johng1 Win7 home premium 64bit 6 posts. Windows 7 Professional All 3 seem to perform about the same, once a disk is actually running, but Which can be found here: You might try looking through the Linux kernel sources to see if the driver for the contrkller gives any clues as to how the chip works….

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The computer is controlelr Dell with the Intel x chipset. Many thanks for the modded ROM. Could you pass on a link please of your setup?

The edits are in x86 machine code. Why can it be?. The original bytes were e8 xx xxwhere e8 is the opcode for the CALL instruction, and the bit immediate operand is the relative branch target. The time now is I had some help from the option ROM release noteswhich gave some hints as to what the PCI config registers do or at least, supposed to do after being interpreted by the option ROM.

JMicron JMB363 Add-on Card AHCI mode

Both ports on Motherboard. Or is there any trick? Thus it seems like setting 0x41[7: The problems with configuration register 0x are more problematic. Hot-plugging the PCIe card never worked for me. I used the newest version of the option ROM 1. This seems to put the controller in AHCI mode.

JMicron® JMB PATA and SATA controller – Windows 7 Help Forums

Can you work that changes at latest bios ver 1. I want to create an AHCI patched verson of 1. Can we get an update for firmware v1.

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Blog Random stuff… Comments Posts. I also used pcicfg in DOS to check the card was detected.

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. This is done the same way as with any other disk.

JMicron JMB eSATA Controller Drivers JMB36X

Now how do I uninstall the windows drivers? Register Function 43 Defaults to 0x Do i need to fix a checksum value as well? There is no entry in Jkicron that says anything like jmicron, etc.