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In message Fri, 1 Jul 1994 14:14:59 -0800 (PST), "John Kim" <jokim@chs.cusd.claremont.edu> writes: > In message Fri, 1 Jul 1994 08:13:45 -0700 (PDT), > Randal Whittle <whittle@chaph.usc.edu> writes: > > >>> about a 9600 level. Of course, I have one of those antique TP700's >>> with a 16550AFN serial port :) ^^^^^ >>> > > >> Does anybody have a clue why IBM would put 16550 UARTs in their >> early 700 series ThinkPads but not in the 750's?!!!! This is >> ANGERING! :( > > The 700 and 720 were MicroChannel Architecture machines. All MCA machines > have 16550 UARTs (as well as other features that make multitasking go more > smoothly). The 750 was in a way a concession to the market's continuing > use of ISA - it is an ISA machine. I guess too many people complained > they couldn't run Linux on the Thinkpad 7xx. :) > > I think the real reason is that the docking station for an MCA machine > could only take MCA cards (unless you plunked down more money for an > adapter). Enough people complained they wanted to use ISA cards so they > got their wish. > > Personally I think they should've stuck with MCA. I doubt they're selling > *that* many docking stations, especially at the price they charge. Actually, machines based on the ISA achitecture are easier, faster and cheaper to design and build, regardless of whether or not a docking station is used. Adam Wilkinson adam@tiamat.umd.umich.edu | "The first time it's research. the second usfmcltc@ibmmail.com | time is just engineering!" - Cliff Stoll Compuserve: 75470,71 | (author of "The Cuckoo's Egg"