Hi, i'm working with these mainboard fanless: Jetway NF94-270-LF
The bios chip is one Winbond W25X80, i have released a simple circuit with one transistor BC547, and the rest connected directly to the paralel port in mode ECP, data buses are 3.3V Also i have release a simple program to erase, test and program it. If one are interesed in this, tell-me.
The flashprogram not works correctly with this chip, but i can try to solve.
The CPU is the Atom N270, normally i used VIA's but, i will test my aplications with it, with VIA i cannot use my SSE2 optimizations, they are more slow that direct use of 32bit assembler code.
This have a Fintek SuperIO F71862FG that is similar to the F71805F.
The base is the ich7m and i945GSE.
I have tested and make that it works, except the VGA and the Audio, i have solved the problems with acpi, and linux kernel boots normally with the SATA.
I have only one problem, with the variable MTRR if i activate variable MTRR's for have cache, the kernel immediately makes a triple fault.
I not known if in the moment of activate MTRR this chip generates a spurious interrupt or similar, and when the kernel creates the IDT table, hangs.
Have one show this problem in the past? I have send to local APIC's the EOI, but the problem continues...
Hi Urbez,
Do you have docs for the Atom cpu or did you hack your way into it for init and CAR?
-Bari
Urbez Santana Roma wrote:
Hi, i'm working with these mainboard fanless: Jetway NF94-270-LF
The bios chip is one Winbond W25X80, i have released a simple circuit with one transistor BC547, and the rest connected directly to the paralel port in mode ECP, data buses are 3.3V Also i have release a simple program to erase, test and program it. If one are interesed in this, tell-me.
The flashprogram not works correctly with this chip, but i can try to solve.
The CPU is the Atom N270, normally i used VIA's but, i will test my aplications with it, with VIA i cannot use my SSE2 optimizations, they are more slow that direct use of 32bit assembler code.
This have a Fintek SuperIO F71862FG that is similar to the F71805F.
The base is the ich7m and i945GSE.
I have tested and make that it works, except the VGA and the Audio, i have solved the problems with acpi, and linux kernel boots normally with the SATA.
I have only one problem, with the variable MTRR if i activate variable MTRR's for have cache, the kernel immediately makes a triple fault.
I not known if in the moment of activate MTRR this chip generates a spurious interrupt or similar, and when the kernel creates the IDT table, hangs.
Have one show this problem in the past? I have send to local APIC's the EOI, but the problem continues...
-
bari -
Urbez Santana Roma