Features:
- Support for Banked and Non-Banked operation.
- 60K TPA with Banked BIOS.
- Support for two floppy drives.
- Support for GIDE hard disks, up to four partitions.
- RAM disk created out of the remaining available memory.
- Real-time clock interrupts, used for keeping the Time-Of-Day and for controlling the floppy drive motors.
- The Time-Of-Day routines use the hardware CMOS clock.
More details here.