1-16
User’s Guide
1.7
Second-level Cache
The board may come without cache or with 256-KB or 512-KB
pipelined-burst second-level cache. Refer to the following table for the
possible cache configurations that your board might have.
Table 1-9
Second-level Cache Configurations
Cache
Size
Data RAM
(9 ns)
Location
Tag RAM
(15 ns - U39)
Cacheable
Memory
256 KB
32K x 32 x 2 pcs
U15, U22 or
U14, U21
32K x 8 x 1 pc
64 MB
512 KB
32K x 32 x 4 pcs
U14, U15,
U21, U22
32K x 8 x 1 pc
64 MB
512 KB
64K x 32 x 2 pcs
U15, U22 or
U14, U21
32K x 8 x 1 pc
64 MB
1.8
Video Function
The onboard video controller and MPEG decoder enable the system to
support video functions, as well as enhance the video display. An
AMC feature connector is also incorporated in the board design for full
hardware MPEG support.
1.8.1
Upgrading the VGA Memory
Observe the ESD precautions when installing
components. See section 1.2.
The 1-MB onboard VGA memory is upgradable to 2 MB. The
additional memory allows your VGA to display higher resolutions and
more colors when appropriate VGA driver is used.