SARANG4D RTP SLOT ATA is basically a standardization of this arrangement plus a uniform command structure for software to interface with the HDC within the drive. The next generation of Integrated Drive Electronics drives moved both the drive and controller to a drive bay and used a ribbon cable and a very simple interface board to connect it to an ISA slot. Although most modern computers do not have physical ISA buses, almost all PCs - IA-32, and x86-64 - have ISA buses allocated in physical address space. The 16-bit version was an upgrade for the motherboard buses of the Intel 80286 CPU (and expanded interrupt and DMA facilities) used in the IBM AT, with improved support for bus mastering. Both EISA and VLB were backward compatible expansions of the AT (ISA) bus.|How does all of this Come Together?