If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Translate BIOS drive address (80h) to IO port address (1f0/a0)
I have a very basic question. Please, can gurus help me?
To address an IDE HDD using BIOS, we use drive address in DL such as 80h, 81h and so on. --- BIOS address On the other hand, to address the same drive using IO port, we use address of IO port (such as 1f0h, 170h) and master/ slave slection (0a0h, 0b0h). --- ATA address And everybody knows that 80h is not always 1f0h/a0h. They can be asigned to different ports. Now, where can I find the translation, or cross reference, table between BIOS address and ATA address? I have 80h here. I want to know the port address and master/ slave information. I know that EnhancedBIOS INT13 AH48 returns DDE at 1ah if version 2, but how about in the case of using older BIOSes? Thanks in advance. Tak |
#2
|
|||
|
|||
|
#3
|
|||
|
|||
You could check the serial number in 8xh and xF0 to find who is who
Thanks Nick, but,,,, How can I get the serial # in 8xh? INT13 AH25 is the only one I know, however, it is NOT for general use. IBM limits it only for PS1 and PS2. Or, any other means to obtain serial than this? Tal |
#4
|
|||
|
|||
BUT that allows for remapping of the drives?
Um, I did not think about this.... old one has no remapping.... Good thought. I will go along with this idea. Port addresses I'm including as "unknown" are 0e0 and 070. 1e8 and 168 are somewhat de-facto standard. There may be more, but I give up for other ones. (in other words, does such a beast actually exists? EDD 1.1 is dated 1995...) Yea, I deal with really old gears. Actually, the program is related to HDD sanitization; they are on retiring machines. Thank you very much for the help, Antoine. Tak |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FS PRINTER PARTS trays fusers drums printheads -- oki fujitsu hp genicom epson ibm dec jetdirect laserjet lexnmark qms okidata ml320 mannesmann tally printonix tektronix qms toshiba zebra otc ibm lexmark intermec dec compaq montreal canada toronto o | [email protected] | Printers | 1 | March 15th 05 06:50 AM |
Update on Athlon 2600 XP problem | David Simmons | Asus Motherboards | 3 | August 27th 04 03:52 AM |
How Move OS XP from Old to New HD? | Nehmo Sergheyev | Storage (alternative) | 82 | January 12th 04 06:10 PM |
FIC or HIS for a 9600Pro? | Phrederick | General | 8 | December 16th 03 01:17 PM |
FDISK, HDD #s, don't know how to install two HDDs. | sunslight | Storage (alternative) | 14 | October 29th 03 08:56 PM |