there is a bit more than just the bios.
there is the (CMOS) real time clock!
this battery/accu/conductor driven unit has two main duties:
- storing, updating and checking clock and alarm times.
- storing BIOS configuration data
you can read that unit via assembly mnemonic in/out.
documentation i
Hi!
>> I read through the boot code and didn't see and specifics written
>> about where the system bios is stored in memory.
>
> The boot code uses the software interrupts associated with the BIOS to
> call BIOS functions. For example, interrupt 16h (BIOS keyboard functions)
> and interrupt 13h (
> I read through the boot code and didn't see and specifics written
> about where the system bios is stored in memory.
The boot code uses the software interrupts associated with the BIOS to
call BIOS functions. For example, interrupt 16h (BIOS keyboard functions)
and interrupt 13h (BIOS disk a
> each bios is going to be different. what is common between the BIOSes
> is the
> int21H functions, which are outlined here:
> http://hdebruijn.soo.dto.tudelft.nl/newpage/interupt/out-0100.htm
Interrupt 21h is provided by DOS. The list you link to contains BIOS
functions as well as DOS funct
- c unsigned char pointer or other unsigned type of your choice
- assembly code, set segment register ds to 0x000f or whatever and use nasm,
set
up a buffer for the filenames, one for the system bios, one r the extended
bios. set up a 64K disk buffer in memory. make your code do an int 21h cal
http://duartes.org/gustavo/blog/post/motherboard-chipsets-memory-map
just google memory map pc
Jim Michaels
jmich...@yahoo.com
j...@jimscomputerrepairandwebdesign.com
http://JimsComputerRepairandWebDesign.com
http://JesusnJim.com (my personal site, has software)
http://DoLifeCompute
