INT 13 U - Compaq, ATAPI Removable Media Device - GET CURRENT MEDIA FORMAT AH = 20h DL = drive number (00h,01h) Return: CF clear if successful AL = media type (see #00265) AH = 00h CF set on error AH = error code 01h invalid request 30h drive does not support media sense 31h no such drive / media not present 32h non-default media / drive does not support media type Notes: this function is supported by the 1993/3/8 Compaq ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly., but only partially (AL is always 00h when successful) by the 1993/8/3 version this function is also supported by some recent versions of the Phoenix 486 BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. this function does not seem to be supported by some Toshiba BIOSes (at least before 1995, maybe some laptops??? with 1.44 MB floppies), because S/DOS 1.0 contains code to bypass a call to this function, always assuming the drive would not support media sense. SeeAlso: AH=15h (Table 00265) Values for Compaq/ATAPI diskette media type: 03h 720K (1M unformatted) 04h 1.44M (2M unformatted) 06h 2.88M (4M unformatted) 0Ch 360K 0Dh 1.2M 0Eh Toshiba 3mode 0Fh NEC 3mode (1024-byte sectors) 10h ATAPI Removable Media Device