search for: getonesec

Hi! It's indeed better to open a new thread for this. So, here's my test session: $ qemu -fda extlinux.144 -s -S Then in another terminal: $ gdb extlinux.elf (gdb) set architecture i8086 (gdb) target remote localhost:1234 Remote debugging using localhost:1234 0x0000fff0 in ?? () at localboot.inc:68 68 jmp kaboom ; If we returned, oh boy... How does "jmp kaboom" get

...ors],ax ; boot file sectors 319,365d326 < ;DEB -- Patch to have code actually insert values for bi_file and bi_length < mov bx, trackbuf ;DEB < mov eax, 17 ;DEB Location of Boot Record Volume < call getonesec ;DEB Retrieve Boot Record Volume < < mov eax, dword [trackbuf+47h] ;DEB EAX is now address of Boot Catalog < < %ifdef DEBUG_MESSAGES < mov si,bcat_loc_msg ;DEB Write sector address of boot cat < call write...

git://git.zytor.com/users/genec/syslinux.git Branch core-diskstart-boot-for-hpa. I found that INT 13h AH 08h in BOCHS used ES, DI, at least when using a partitionless HDD, causing "Boot error" from the magic check as it was loaded to the wrong location. HPA suggested wrapping INT 13h with the push/pop for ES's safety. This then lead to checking over for all int 13h calls in