ROMBIOS services

[ozzy_85]

While calling a ROMBIOS service, you load the service number in the 'AH' register and use the INT instruction to call an interrupt... control is then transffered to the corresponding service routine which is predefined. Now my question is, in which language is this service routine coded, machine or assembly??

Thanx in advance...

[olivthill]

The BIOS (in ROM or RAM) contains only machine code. Nevertheless, it is very likely that this code was initially written in assembly.

[ozzy_85]

thnx