HP NX9040, NX9030, NX9020, ZE4900 manual System DMA, Hardware DMA System Function

Specifications

Table 6-9

8X MAX DVD-ROM Drive (Continued)

Data transfer rate
Max 24X CD	3600 KB/s (150 KB/s at 1X CD rate)
Max 8X DVD	10,800 KB/s (1352 KB/s at 1X DVD rate)
Multiword DMA mode 2	16.6 MB/s
Startup time	< 10 seconds
Stop time	< 3 seconds

	Table 6-10
	System DMA
Hardware DMA	System Function
DMA0	n/a
DMA1*	n/a
DMA2*	n/a
DMA3	n/a
DMA4	Direct memory access controller
DMA5*	Available for PC Card
DMA6	Not assigned
DMA7	Not assigned

*PC Card controller can use DMA 1, 2, or 5.

6–12 Maintenance and Service Guide