5. Error status bitmap

68000 Error Status Bitmap Details
(sound address = 420H / SH address = 25a00420H)

Bit position	error contents
bit31	Always 0.
bit30	68K CPU bass error
bit29	68K CPU exception handling
bit28	68K CPU address error
bit27	MIDI buffer overflow
bit26	Illegal MIDI exclusive message
bit25,24	reserved
bit23	Always 0.
bit22	Effect change number is invalid.
bit21	reserved
bit20	The sound driver file is corrupted. For example, when the data is corrected when copied to UNIX.
bit19	At the time of Effect change, the RAM area for the specified DSP is invalid.
bit18	When issuing the Sequence Start command, there is no data to play.
bit17	Note on was executed even though Bank Change was never performed (not set).
bit16	Note-on There is no layer to be pronounced by Key Sprit when executing.
bit15	Always 0.
bit14	Undefined MIDI Control change Number input
bit13	At the time of Effect change, the RAM area for the corresponding DSP is insufficient.
bit12	At the time of Effect change, the setting value of the corresponding DSP RAM is invalid.
bit11	At the time of Effect change, the corresponding DSP RAM does not exist in the Map.
bit10	At the time of Effect change, the corresponding DSP Program has not been downloaded.
bit9	At the time of Effect change, the corresponding DSP Program does not exist in the Map.
bit8	At the start of the sequence, the corresponding sequence bank has not been downloaded.
bit7	Always 0.
bit6	At the start of the sequence, the corresponding sequence bank does not exist in the Map.
bit5	At the time of MIDI Prg change, the corresponding program number does not exist in the tone bank.
bit4	At the time of MIDI Prg change, the tone bank of the corresponding control number & MIDI channel is not set.
bit3	At the time of MIDI Control change (mixer change) The tone bank of the corresponding control number & MIDI channel is not set.
bit2	At the time of Mixer change or tone bank change, the corresponding tone bank does not exist in the map. Or the tone bank has not been downloaded.
bit1	At the time of Map change, the corresponding map does not exist in (A000h ~).
bit0	At the time of Mixer change, the corresponding Mixer does not exist in the tone bank. Or the tone bank is not set.

Note: bit24-31 is not cleared automatically, so clear it on the host side if necessary. bit0-23 will be cleared automatically in the next normal operation.