Back about July 2002, you wrote: I have a WD1002-SASI (TAN) controller card in unknown condition. (The "TAN" is hand written, and is also written on a BIOS chip "Tan 5.0".) I purchased it used about 20 years ago to attempt to add a Hard Drive to a TI-99/4A, although I never actually started the project. I also have a 534 page Western Digital Corp. June 1984 Storage Management Products Handbook that includes data on the following "Winchester Board Products": WD1000-05 WD1001 WD1002-05 WD1002-MTB WD1002-SHD WD1002-WFT WD1002-WX2 The WD1002-SHD (at least) has data regarding the SASI port. If interested, make me a serious offer, and include your ZIP-Code to determine shipping. Thanks. --