Roland VS-890 - Manual (Page 121)

MIDI Implementation
Response (result of the Command) List for Disk Access
RgBOonsfl Remarks
(Ю Complete (No Error)
0) Busy
02 Error: No disk
0.3 Error: File Not Exist
04 Error: Can Not Delete File
05 Error: Can Not Create File
Oh Error: End of File
07 Error: Read Error
OR Error: Write Error
09 Error: Can Not Close File
Description of Commands ( the following section )
00 Reset
[ Start j
{ address { Data
Contents and remarks
: 12 00.02 i 30 Reset Ccnmand
It resets the Disk Access, closes all files and clears the Butler.
You should execute the command before any file access.
01 Read Open
Start
address Daca 1 Contents and remarks
10 00 00 20 7E file Name - 1 (ASCII)
10 00 Cl 20 7E File Name - 2 (ASCII)
10 00 с -2 20 7E File Name - 3 (ASCII)
10 DC С-3 20 7E File Name - 4 (ASCII)
10 OC­С4 20 7E File Name - 5 (ASCII)
IO 00 С5 20 7E File Name - 6 (ASCII)
10 00 С€ 20 7E File Name - 7 (ASCII)
10 OC­ 07 20 7E File Name - 8 (ASCII)
IO OC­Об 20 7E File Extension - i (ASCII)
IO 00 CS 20 7E File Extension - 2 (ASCII)
10 DC СА 20 7E File Extension - 3 (ASCII)
! 12 00 02 01 i Read Open Command |
It opens the specified file for reading, sets the reading pointer to the lop of file and sets the
result to the Resuittsame as Read Open Command) Area.
You can open only one file at the same time, (cannot open the Reading File and the Writing
File simultaneously) The File Name is based on MS-DOS format.
02 Write Open
Start
address Data Contents and remarks
10 00 00 20 7E File Name - 1 (ASCII)
IQ -3001 20 7E File Name - 2 (ASCII)
10 00 02 20 7E File Name - 5 (ASCII)
10 00 0Э 20 7E File Naitffi - 4 (ASCII)
10 00 04 ”0 7E Fils Name - 5 (ASCII)
10 00 05 20 7E File Name - 6 (ASCII)
10 00 06 20 7E File Name - 7 (ASCII)
10 00 07 20 7E Fils Name - 8 (ASCII)
10 00 08 20 7E File Extension- 1 (ASCII)
10 00 05 20 7E File Extension- 2 (ASCII)
10 00 Un 20 7E File Extension- 3 (ASCII)
12 00 02 Ì 02 Write C-pen Command
It opens the specified file for writing, sets the wTiting pointer to the lop of file and sets the
result to the ResulUsame as Write Open Command) Area.
If the same name's file already existed, it is deleted.
You can open only one file at the same time, (oinnot open the Reading File and the Writing
File simultaneously) The File Name is based on MS-DOS formal.
03 Read
Concents and rsinarKs
12 DD OD ; Oaaaaaââj Daca Sire
12 00 01
i Obbbbbbbl aaaaaaabbbbbbbb = Data Sire 1 -■ 16384 bi'ts
I Read Command
It reads the Data which has specified size of Bytes to the Buffer area from current read
pointer of the File, after that puls forward the pointer and sets the result to the ResulUsame
as Read Command) Area.
If the remainder of the file data was less than specified size of Bytes, it reads alt data to the
buffer and writes the actual size to the Data Size area, if you read the data from over the end
ot file, the error occurs.
04 Write
00 00 ! Оаааааза! Daca Sirs
00 01 ! Obbbbbbfc
nts and remarks
I = Data Sire 1 - 163B4 byte
12 OD 02 1 04 I Write Ccisnand
It w'rites the Data which has specified size of Bytes to current write pointer area from the
Buffer area, after that puts forward the pointer and sets the result to the ResulUsame as
Write Command) Area.
os Read Close
Start [
address } Data
12 OS 02 ! 05
I Contents and remarks
I Read Close Command
It closes the File which is o|>ened for reading, and sets (he result to the Result (same as Read
Close Command) area.
06 Write Close
Data
Oc
Contents and remarks
Write Close Command
it closes the File which is opened for writing, and sets the result to the Result (same as Write
Close Command) Area.
07 Check File
Start Í
address ¡ Data Contents and remarks
10 OC 00 2C- 7E File Name - 1 (ASCII'
10 •oc 01 2C 7E File Name - 2 (ASCII:
10 oc 02 20 7E File Name - 3 (ASCII)
10 Où 03 2C 7E File Name - 4 (ASCII)
10 oc 04 2C 7E File Name - 5 (ASCII)
ID oc 05 20 7E File Name - 6 (ASCII;
10 oc 06 2C 7E File Name - 7 (ASCII:
10 OG 07 2C 7E File Na.me - S (ASCII)
10 co 08 2C - 7E File Extension - 1 (ASCII)
10 00 03 20 7E File Extension - 2 (ASCII)
10 0-C Oh 2C 7E File Extension - 3 (ASCII)
0-0 02 07 Check File Command
It sets the File information which has specified name in the Buffer area.
Start I
address ! Data Contents and remarks
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