IBM ThinkPad Power Series 850

So I learned something new today. Back in the early and mid-90s, IBM tried to build a PC-like platform and ecosystem around its PowerPC processor. They called it the PowerPC Reference Platform, or PReP, and with it, you could build what were effectively PC clones with PowerPC processors, ready to run a number of operating systems, including AIX, Windows NT, OS/2, and Apple's failed Taligent project. None of this is news to me. What is news to me, however, is that aside from a number of desktop PReP machines, IBM also developed and sold a number of PReP laptops under the ThinkPad brand. Sometime in 1994, IBM started working on a prototype mobile system named Woodfield and designated as type 6020. Very little is known about this system; it was never officially announced or sold. On June 19, 1995, IBM announced the ThinkPad 850 and 820 (announcement letters 195-178 and 195-179, respectively) with a planned availability date of July 24, 1995. The ThinkPad 820 designation was typ查看全文

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