Int 21/AX=3701h

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DOS 2+ - SWITCHAR - SET SWITCH CHARACTER

AX = 3701h
DL = new switch character

Return:
AL = status 00h successful FFh unsupported subfunction

Notes: Documented in some OEM versions of some releases of DOS; DOS 2.x had a SWITCHAR=c setting in CONFIG.SYS. Supported by OS/2 compatibility box and Novell DOS 7. Ignored by MS-DOS 5+ and DR DOS 3.41-6.0; DR DOS 6.0 and Novell DOS 7 leave AX unchanged

See Also: AX=3700h

Category: DOS Kernel - Int 21h - D

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