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Chapter 3 Functions

3.1 CPU

A 32-bit RISC chip with a built-in DSP function is installed in the main CPU, and a MC68EC000 16-bit CPU is installed in the sound block. In addition, SH-1 is installed on the subsystem side.
Table 3.1 shows the specifications of each CPU.

Table 3.1 CPU specifications
 SH-2 
-RISC type instruction set 
-Internal and external 32 bits Bus
, cache 4 Kbyte
, clock 28.6 MHz
, built-in multiplier / divider
 SH-1 
-RISC type instruction set 
-Built-in A / D converter
-Internal 32-bit bus, external 16-bit bus
, clock 20 MHz
, cache 4 Kbyte
, built-in multiplier
 MC68EC000 
 ・ Internal 16-bit bus, external 16-bit bus 
・ CISC type instruction set
・Clock 11.3MHz


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