Roland XP-30 用户手册

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The location where Patch and Performance settings, etc. are 
stored is 

. There are three memory types: temporary 

memory, rewritable memory and non-rewritable memory. 

fig.3-19.e

This area holds data for the Performance, Patch, and Rhythm 
Set you select using the front panel buttons, etc. When you 
play the keyboard or play back an external sequence, sound 
is produced based on data in the temporary area. When you 
modify a Performance, Patch or Rhythm Set, you are 
modifying the data that has been called into the temporary 
area instead of the data in memory.
Settings in the temporary area are temporary, and will be lost 
when the power is turned off or when you select another 
Performance/Patch/Rhythm Set. To keep the settings you 
have modified, you must write them into rewritable 
memory.

System memory stores system parameter settings that 
determine how the XP-30 functions. When you modify these 
settings, the system memory settings are rewritten directly. 
These settings are non-volatile, being retained even when the 
power is turned off.

User memory contains data for 32 Performances, 128 Patches 
and two Rhythm Sets.

These are read/write cards which can store data from 
internal system memory and user memory. You can use 
memory cards to store data for which there is no room in 
internal user memory, or data which you wish to use on 
another XP-30.
Before a memory card can be used, it must be formatted (p. 
122).

Data in Preset memory (Patch: PR-A–C, E, GM, XP-A–C, 
Performance: PR-A, B, Rhythm Set: PR-A–C, E, GM, XP-A, C) 
cannot be rewritten. However, you can call up settings from 
preset memory into the temporary area, modify them and 
then store the modified data in rewritable memory.

Up to four Wave Expansion Boards can be installed in EXP-
D, E Slots in the XP-30. Wave Expansion Boards contain 
Wave data, as well as Patches and Rhythm Sets that use this 
Wave data, which can be called directly into the temporary 
area and played.