Adam Sulmicki <[EMAIL PROTECTED]> writes: > hello, > can anyone point me to an documenation on bios's > interrupt 15, ah=87. It is 'copy extended memory'. > > I suspect the implementation I have is wrong, and > thus stops me from adding support for legacy > applications under LinuxBIOS. > > Going over phoenix manual and Ralf Browns's > interrupt list, I know that > > CX = counter > ES:SI = pointer to GDT > > what is not clear to me is what does determine source and destination > of the copy. Would it just copy between first and second segment > (if so why it is not documented).
I have in my documentation the following addtional information. CX is a count of works (2 byte quantities) With the max being 0x8000 And the format of the GDT is: dummy GDT location source GDT entry target GDT entry BIOS CS BIOS SS This code works for a 286 so it has a 16MB limit. And segments are limted to 64K, if my memory serves me correctly. Eric _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
