Code: Select all
mov dx,BAR
mov ax,ech
add dx,7
out dx,ax
sub dx,7
mov cx,256
lea di,[buf]
rep inswsomething weird to send identify coomand to SATA Controller
something weird to send identify coomand to SATA Controller
Why when I try to send a identify command to a SATA Controller with this code:
this code return the bytes ffh into the buf. Why?
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Combuster
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Re: something weird to send identify coomand to SATA Control
You are not using IDE controller code to program AHCI here? 
Re: something weird to send identify coomand to SATA Control
NO!Combuster wrote:You are not using IDE controller code to program AHCI here?
The controller is in AHCI mode and the BAR is thet true base address register of SATA Controller.
Re: something weird to send identify coomand to SATA Control
Is the problem that you are sending PATA commands to an AHCI device?
Re: something weird to send identify coomand to SATA Control
You seem to have a habit of not providing enough code or debugging information from your efforts and then resort to attacking the community for not helping and/or ignoring the help that you get. It would appear that you still have not learned from this.NO!
OS Development Series | Wiki | os | ncc
char c[2]={"\x90\xC3"};int main(){void(*f)()=(void(__cdecl*)(void))(void*)&c;f();}
char c[2]={"\x90\xC3"};int main(){void(*f)()=(void(__cdecl*)(void))(void*)&c;f();}