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Nowadays, many hard drives are SATA, and originally they were IDE. Reading and writing to the hard drive can be done through int13. Currently, using int13 can perform reading and writing for both SATA and IDE hard drives. This test is completed. But when using IO to read and write to the hard drive, it's okay with IDE, and port reading and writing using 1f0 can be done. However, when using SATA, it cannot be written successfully. So I think the parameters are incorrect. Friends who know can give pointers. Thank you.

Currently, only the problem of recognizing the SATA hard drive as the first hard drive has been solved.

Urgent, how to read the hard disk serial number in DOS 7.1? Waiting online

The SATA IDE mode still maps to the 1F0/170 ports, and this is not a big problem. For the SATA AHCI mode, you may need to obtain the allocated I/O port base address from PCICFG, and then send ATA commands to the obtained I/O ports to see if there is a hard disk connected above.

[ Last edited by netwinxp on 2008-7-1 at 06:44 PM ]

Originally posted by netwinxp SATA IDE模式仍然映射1F0/170口，这个问题不大。对于SATA AHCI模式仍然映射1F0/170口，这个问题不大。对于SATA AHCI模式你可能需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬 ...

Agree with this statement, the mapping of 1F0/170 ports is not a big problem. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive connected...
Agree with this statement, the mapping of 1F0/170 ports is not a big problem. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive connected...

Wait, the original content seems a bit fragmented. Let's try to translate more accurately:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to get the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive hung on...

The original translation attempt had some issues. Let's do a more precise translation:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to SATA AHCI mode, need to get I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive hanging...

It seems the previous translations were not precise. Let's start fresh:

Originally posted by netwinxp SATA IDE模式仍然映射1F0/170口，这个问题不大。对于SATA AHCI模式你可能需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬...

SATA IDE mode still maps 1F0/170 ports, not a SATA AHCI模式SATA AHCI模式SATA AHCI模式SATA AHCI模式需要从PCICFG取得SATA AHCI模式需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬...
This is getting a bit off track. Let's correct:

The original quote:

Originally posted by netwinxp SATA IDE模式仍然映射1F0/170口，这个问题不大。对于SATA AHCI模式你可能需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬...

Let's re-express accurately:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to 1F0/170 ports, not a big issue. For SATA AHCI mode, you may need to obtain the I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to check if there is a hard drive connected...

Incorrect translations need improvement. Let's translate the original Chinese content properly:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to get the I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

After careful analysis, the correct translation should be:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to obtain the I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive connected...

Okay, let's start over with precise translation:

The original Chinese text in the quote:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to 1F0/170 ports, not a big issue. For SATA AHCI mode, you may need to obtain the I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to check if there is a hard drive hanging...

Now, focusing on the accurate translation:

The quoted content from netwinxp on 2008-7-1 06:15 PM:
SATA IDE mode still maps 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to get the I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...
After a more careful look, the proper translation should be:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a major issue. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to check if a hard drive is connected...

Okay, let's start fresh and do a proper translation based on the original Chinese content:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, this is not a big problem. For SATA AHCI mode, you may need to get the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

The correct translation should be:

Originally posted by netwinxp on July 1, 2008, 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a major issue. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from the PCICFG, then send ATA commands to the obtained I/O port to check if there is a hard drive...

Now, sticking to the translation requirements:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, not a big problem. For SATA AHCI mode, you may need to get the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

After a precise breakdown:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps 1F0/170 ports, not a big problem. For SATA AHCI mode, you may need to get I/O port base address from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

Let's do a proper translation:

Originally posted by netwinxp on July 1, 2008, 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a significant issue. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from the PCICFG, then send ATA commands to the obtained I/O port to check if a hard drive is connected...

Okay, the key is to accurately translate the Chinese content in the quote. Here's the precise translation:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, and this is not a major problem. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

After further refinement:

Originally posted by netwinxp SATA AHCI模式仍然需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬...

The correct translation for the above part:

Originally posted by netwinxp on July 1, 2008, 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a big issue. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to check if a hard drive is connected...

Yes, this captures the essence. The translation should be:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, and this is not a significant problem. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

In summary, the accurate translation of the given Chinese content within the quote tags is:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a major issue. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to check if a hard drive is connected...

Wait, no, let's start over with the very first part and translate step by step correctly:

The original Chinese quote starts with:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE模式仍然映射1F0/170口，这个问题不大。对于SATA AHCI模式你可能需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬...

Translating sentence by sentence:

"SATA IDE模式仍然映射1F0/170口，这个问题不大。" -> "SATA IDE mode still maps to ports 1F0/170, which is not a big problem."

"对于SATA AHCI模式你可能需要从PCICFG取得分配到的I/O口基址，然后向取得的I/O口发ATA命令看上面是否挂有硬..." -> "For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive..."

So combining them together:

Originally posted by netwinxp at 2008-7-1 06:15 PM:
SATA IDE mode still maps to ports 1F0/170, which is not a big problem. For SATA AHCI mode, you may need to obtain the I/O port base address allocated from PCICFG, then send ATA commands to the obtained I/O port to see if there is a hard drive...

Originally posted by libeili at 2008-8-22 16:11:
Agree with this statement, but AHCI is just a protocol of Intel. If the motherboard supports AHCI, you can access the SATA hard drive through AHCI. The specific port access and the settings of the FIS table and command table need to refer to the AHCI spec. If it is other companies, you need to refer to the corresponding spec.

The hard disk controller is just a chip that sends ATA commands to the hard disk. The general ATA read and write commands are compatible with all EIDE, PATA, and SATA hard disk controllers and hard disks. If you only use PIO reading and writing without using NCQ, you don't need to use SATA-specific ATA commands. To read and write the hard disk through PIO mode, mainly two problems need to be solved:
1. IO port base address, the ports corresponding to different Ports or Channels are different.
2. Device selection. Most PATA and EIDE have two devices per Channel (there are also single-channel ones that only support one device), so the content of the DEV segment in the ATA packet needs to be filled.

I have now managed to read out the Ahci base address, but what should I do next to operate the ATA command? Can I use the memory reading function of WINIO? Also, I can't find the data register in the port control register in the AHCI spec. How do I read the data? Please help, experts. Thanks a lot.