PocketDOS and LoadLin

最近玩了一下PocketDOS，一个window mobile上的DOS模拟器，居然把《仙剑奇侠传》跑起来了，慢是慢了点，但整个效果还不错。今早突然想到，我能不能用LoadLin把linux从 PocketDOS的环境下boot起来，然后享受一把linux，由于目前N50在handhelds.org上的移植似乎停滞，这种boot方法可能 是当前最理想的。首先要研究的问题： 1）PocketDOS是模拟的x86平台，只是DOS环境而非指令级。 2）LoadLin Internal

Introduction to PocketDOS :

PocketDOS is based on XT-CE, an IBM PC/XT emulator for Windows CE which emulates a PC with an 80186 processor, 1Mb of RAM, a (S)VGA-compatible display and the standard support chips. This allows most applications designed for PC-compatible computers running MS-DOS to run on the pocket computer. PocketDOS does not emulate DOS (or any other operating system), but is included with evaluation versions of Datalight ROM-DOS 6.22, Caldera DR-DOS 7.03 and FreeDOS. In conjunction with running a 'real' DOS, PocketDOS is able to provide the same level of application compatibility as the original IBM PC/XT, while still allowing the pocket computer user access to all of the features and applications it's native operating system. In addition, PocketDOS is also able to run many other operating systems designed for the IBM PC/XT computer.

也 就是说，PocketDOS是对整个x86的模拟仿真，目前通过插件能够仿真486DX/SX。(呵呵，当年玩的就是这个CPU。）这样就OK了，至少 loadlin看上去可以直接拿来用，而且linux image只需要在本机上build一个。不过目前loadlin只支持2.4.x及以前的版本。