PC IBM & reserved memory...

[mikeleany]

Well, for upper memory, you're okay. However, it's not safe to assume 640kB of lower memory. I have a system that only has 512kB for some reason (haven't figured out why yet.) So you'll need to test for BOTH the amount of lower AND upper memory.

[mikeleany]

My computer won't do anything but beep if I don't have memory in the banks. In the past, I've also tried with other computers. If I remember right, they all did the same. I believe that lower memory (at least in most cases) is part of the memory that you put in the banks, and not something that is soldered to the motherboard.

[javaman]

Which BIOS call gives back the low memory size?
Or must I check this memory directly?

bye,
Paolo

[df]

INT 0x12