No CONTROL registers exist for I/O paths assigned to ASCII files. The STATUS registers for I/O paths assigned to ASCII files are:
0 - ASSIGN status: 0 - not assigned, 2 - assigned to a file
1 - File type: 3 - ASCII file
2 - Always 4
3 - Number of records (ignored by Windows since files are auto-extended)
4 - Record size: 256 bytes
5 - Current record
6 - Current byte within record
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