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AX = 12FFh BX = 0002h
Return:
AX = 0000h if supported DX = size of the DOS BIOS in paragraphs CL and flags trashed
Note: This API is provided by IBMBIO.COM for the initialization phase of drivers loaded via DEVICE=/HIDEVICE=/DEVICEHIGH= directives and is only available during these short time intervals. It is called by DR DOS 6.0 EMM386.SYS and Novell DOS 7 EMM386.EXE to query the size of the DOS BIOS (the resident code of IBMBIO.COM).
See Also: AX=12FFh/BX=0000h - AX=12FFh/BX=0003h
Category: Other Operating Systems - Int 2Fh - D
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