Overview, Continued
BIOS Shadowing The system BIOS is always copied from ROM to RAM for faster execution. The end user can shadow 16 KB ROM segments from C0000h – DCFFFh.
IDE | The Apollo IV motherboard has two |
| support up to four IDE drives (hard disk drives, |
| drives). The integrated PCI bus master enhanced IDE controller is on the PCI |
| local bus. The IDE controller supports the Ultra DMA/33 protocol, which |
| doubles the hard disk drive data transfer rates specified in the |
| standards to 33 MBs while maintaining full backward compatibility with |
| existing PIO mode 3, PIO mode 4, and DMA mode 2 devices. |
Fast ATA |
|
The motherboard supports the Fast ATA specification using PIO mode 4 and | |
| multiword DMA mode 2. |
Ultra DMA/33 |
|
This motherboard includes an integrated enhanced IDE PCI bus master IDE | |
| controller that supports the Ultra DMA/33 protocol. The Ultra DMA/33 |
| protocol permits data transfer rates up to 33 MBs. Ultra DMA/33 also reduces |
| the CPU workload and permits increased CPU utilization. Ultra DMA/33 is |
| completely |
Floppy |
|
The Apollo IV motherboard has an onboard floppy controller that supports up | |
| to two 360 KB, 720 KB, 1.2 MB, 1.44 MB, or 2.88 MB floppy drives. |
Parallel Port |
|
The Apollo IV motherboard has an onboard ECP and | |
| port connector. |
Serial Ports |
|
The Apollo IV motherboard has two onboard serial port connectors and two | |
| 16550 UART serial ports. |
Keyboard |
|
The Apollo IV motherboard Includes a standard DIN keyboard connector. | |
|
|
| Cont’d |
Chapter 1 Hardware Installation | 5 |
