MEM 0040h:007Bh - INT 4Bh FLAGS (PS2 and newer) Size: BYTE SeeAlso: INT 4B/AX=8102h Bitfields for INT 4Bh flags: Bit(s) Description (Table M0023) 7-6 reserved 5 set if Virtual DMAsee Direct Memory Access Spec supported [PSIBM PS/2, any model] (see INT 4B) 4 reserved 3 set if INT 4Bh intercepted and must be chained 2 reserved 1 set if Generic SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE. CBIOS(Compatibility BIOS) The IBMInternational Busiuness Machines XTIBM PC XT/286 and PS/2IBM PS/2, any model models with 80286 or higher processors contain two separate BIOSes. The CBIOS is a real-mode BIOS which is compatible with the earlier products in the IBMInternational Busiuness Machines PCIBM PC family and PS/2IBM PS/2, any model models with 8086 processors. See also ABIOS. services available on INT 4Bh 0 reserved