16Mb Memory Limit?

[guest]

I tried to detect my memory(128MB) by int 15, EAX=0000E820,and it seemed working(My motherboard is very new).But the highest area is in 00FF:XXXX,and the highest free memory area is sometihing like 0000:1000~00C0:FE06.So it seems I have only 16MB?The result does not change no matter whether I enables A20 gate.Can anyone explain why this happen?

[Whatever5k]

From http://www.mega-tokyo.com/os/os-faq-mem ... ine_memory:

the standard BIOS only returns memory between 1MB and 16MB; use AH=C7h for memory beyond 16MB not all BIOSes correctly return the carry flag, making this call unreliable unless one first checks whether it is supported through a mechanism other than calling the function and testing CF

[guest]

Thanks.Actually I read the FAQ but didn't read that carefully enough and misside that paragraph.