LADDR
Microsoft LADDR (layered device driver model) is a device driver architecture for storage devices.
History
It was codeveloped by Microsoft, Compaq, Adaptec, NCR and Western Digital and announced in June 1990.
It supported OS/2 1.2 and OS/2 Version 2.0. The extensions .BID, .VSD and .TSD are used.
Overview
- I/O Supervisor
- IOS1X.SYS
- Type-Specific Drivers (TSD)
- DISK.TSD - hard disk drives
- CDROM.TSD - CD-ROM drives
- TAPE.TSD - tape backup devices
- Vendor-Specific Drivers (VSD)
- FT.VSD - fault tolerance
- FATCACHE.VSD - enhanced caching
- Bus Interface Drivers (BID)
- AMI.BID - American Megatrends Series 15/Series 44
- AHA154X.BID - Adaptec
- AHA164X.BID - Adaptec AHA-1640 micro channel
- AHA1574X.BID - Adaptec AHA-1740 EISA
- BT54X.BID - BusLogic
- BT64X.BID
- BT74X.BID
- CPQARRAY.BID - Compaq
- ESDI-506.BID
- DPT201X.BID - DPT
- ULTRA14.BID - UltraStor 14FX and 34FX
- WD7000EX.BID - Western Digital