Chapter 2 Installation and Upgrade
RHINO 5 User’s Manual
14
2.7
Asynchronous Cache RAM Installation
RHINO 5 provides the option for changing the size of the
asynchronous cache RAM from cacheless up to 1M bytes cache
RAM. To do this, besides the jumper settings mentioned in the
Appendix C has to be set properly, care must be taken to stuff
the cache RAM in the proper place and orientation.
Cache size of 256K bytes requires 8 pieces of 32Kx8 data
RAM. As they are 28 pin DIP IC, they should be stuffed at U2-
U6 and U9-U11 as shown below :
For cache size of 512K bytes or 1M bytes, 8 pieces of 64Kx8
or 128Kx8 data SRAM should be used respectively. As both of
them are 32-pin DIP IC, just stuff them at U2-U6 and U9-U11.
2.8
Control of System Speed
System speed can be controlled by keyboard. To change the
speed by keyboard, use the minus sign (-) and the plus sign (+).
Press <control> + <alt> + <“
-
”> for slow speed and <control>
+ <alt> + <“+”> for fast speed.
32K x8
SRAM
32 Pin DIP socket
at U2-U6, U9-U11
Align at the bottom
side of the IC.
Pin #1 of
IC Socket
Pin #1 of
32Kx8
