2 ms·
No, I'm pretty sure this check was only done when the (root) directory needed to be accessed, which was on the same track as the boot sector, so reading it (whi
by PreInternet01 2y ago
No, I'm pretty sure this check was only done when the (root) directory needed to be accessed, which was on the same track as the boot sector, so reading it (which was required for synchronization anyway) was free.
Glancing at https://github.com/microsoft/MS-DOS/blob/main/v4.0/src/BIOS/MSDISK.ASM#L708 https://github.com/microsoft/MS-DOS/blob/main/v4.0/src/BIOS/... seems to support this...