[This page at OSDev](https://wiki.osdev.org/VGA_Hardware) has lots of details
on the VGA system. I believe you can poll the registers to determine the
blanking period; I don't recall VGA supporting interrupts for this. But I could
be wrong.
Sent with [ProtonMail](https://protonmail.com) Secure
I'm new to graphics programming on DOS. My experience programming
graphics on PC is on modern systems where I can use a library that
handles all low-level calls for me. I know about Allegro, but it's kind
of fat and I don't think it supports 16-bit.
Anyway, I'm figuring out VGA and VESA graphics p
