Compaq 615 DVD-ROM Drive specifications, System DMA specifications, Hardware DMA System function

Specifications

DVD-ROM Drive specifications

	Applicable disc		Read:	Write:
			CD-DA, CD+(E)G, CD-MIDI,	CD-R and CD-RW
			CD-TEXT, CD-ROM,
			CD-ROM XA,
			MIXED MODE CD, CD-I,
			CD-I Bridge (Photo-CD,
			Video CD), Multisession CD
			(Photo-CD, CDEXTRA,
			Portfolio, CD-R, CD-RW), CDR,
			CD-RW, DVD-ROM (DVD-5,
			DVD-9, DVD-10, DVD-18),
			DVD-R, DVD-RW, DVD+R,
			DVD+RW, DVD-RAM
	Access time		CD	DVD
	Random		< 110 ms	< 130 ms
	Cache buffer		2 MB
	Data transfer rate
	24X CD-ROM		3,600 KB/sec
	8X DVD		10,800 KB/sec
	24X CD-R		3,600 KB/sec
	24X CD-RW		3,600 KB/sec
System DMA specifications
	Hardware	DMA System function
	DMA0	Not applicable
	DMA1*	Not applicable
	DMA2*	Not applicable
	DMA3	Not applicable
	DMA4	Direct memory access controller
	DMA5*	Not applicable
	DMA6	Not assigned
	DMA7	Not assigned

*ExpressCard controller can use DMA 1, 2, or 5.

Maintenance and Service Guide 6–5