9. SUMMARY OF SPC700 COMMANDS.

An SPC700 series is used for the SFX sound source CPU. However, 
standby and sleep modes can not be used.

The command set operand notation and explanation of command activity
are indicated in the table below. The upper portion of the table are
symbols necesary to operand description. These are symbols necessary
assembler description. In the lower portion of the table, the values
of the various operand are expressed as symbols. Assembler 
descriptions are given as numerical values or labels.

Table 9.1. Command Operand Symbols and Meaning

Symbol
-----------------------------------------------
  A       A register
  X       X register
  Y       Y register
 PSW      Program status ward
 YA       Y, A paired 16-bit register
 PC       Program counter
 SP       Stack pointer

 ( )      Indirect expression
( )+      Indirect auto-increment expression
  #       Inmediate data
  |       Absolute address
  /       Bit reversal
  .       Bit position indicator
 ( )      Indexed Indirect expression
  H       Hexadecial notation
------------------------------------------------
 inm      8-bit inmediate data
 dp       Offset address within direct page
 abs      16-bit absolute address
 rel      Relative offset complement value of 2
 mem      Boolean bit operation address
 bit      Bit location


          MSB

  X       -----------------------
          | | | |0| |           |
          -----------------------
          \----X----/


          MSB

  Y       -----------------------
          | | | |0| |           |
          -----------------------
          \----Y----/

upage     Offset within U page
  n       Vector call number.