Sun Microsystems Ultra 1 Creator Series Service Manual page 191

C.1.5 Graphics and Imaging (Workstation Only)
The system unit takes advantage of UPA features to provide high performance
graphics through the fast frame buffer (FFB). The FFB consists of the frame buffer
controller (FBC), the 3D RAM (3DRAM), the RAM digital-to-analog converter
(RAMDAC), and associated circuitry. The FFB connects to the system unit through
the UPA64S expansion connector.
The 3DRAM is a standard DRAM that includes a multi-level cache in front of it and
a separate graphics port. The FBC ASIC provides acceleration for 2D and 3D
imaging primitives that permits a write-mostly interface. This, combined with the
3DRAM cache and support for graphics operations, allows a high performance
frame buffer.
FFB supports the VESA standard for monitor control. FFB also supports stereo
video.
C.1.6 Peripherals
The following peripherals are supported by the system unit or server:
CD-ROM drive, floppy drive, and disk drive. A small computer system interface
(SCSI) and optional tape drive components; 2.5-Gbyte, 4-mm, and
8-mm are also supported.
C.1.6.1 CD-ROM Drive
The CD-ROM drive is a standard device with multimedia features. This includes
multi-session capability and fast access (quadra-speed) for image and video data.
The CD-ROM drive dimensions are 5.94 inch x 7.78 inch x 1.71 inch (149.5 mm x 196
mm x 43 mm) and the drive slot is a standard 1.6-in. (40.64 mm) bay that uses
industry standard bezels. Headphone access, eject, pin eject, and volume control is
available on the front panel. Audio from the CD is available through either the front
panel headphone connection, the line-out connector at the system unit or server rear
(accessible by cabling from front to rear), or the internal speaker.
The CD-ROM drive supports an approximate 600-KByte-per-second data transfer
rate and an access time of 350 ms (maximum). The SunCD 4 Drive Specifications,
document part number 802-4157, provides cleaning, jumper setting, and operation
instructions for the CD-ROM drive.
Note – Both multifunction and quadra-speed CD-ROM drives are supported as long
as they conform to the 5.94-inch x 7.78-inch x 1.71-inch dimensions.
Appendix C Functional Description C-5