EIDE
As mentioned, EIDE stands for Enhanced Integrated Drive Electronics. This term specifies the incorporation of four major upgrades to the ATA/IDE specification:
- LBA (Logical Block Addressing) translation standards for BIOSs to support IDE drives larger than the old limit of 528 MB.
- Industry standards for improved data throughput to and from IDE drives-PIO modes 3 and 4.
- Industry standard instruction sets that allow CD-ROM drives and tape backups to connect to the same controller using the ATAPI standards.
- Use of the old, mostly unused IBM standard for a secondary controller calling IRQ 15 and I/O address 170h.