I now have Unix booting multi-user in FreeBee!

I have at last gotten Unix to boot to multi-user mode in FreeBee (Philip Pemberton's 3B1/UNIX PC emulator). The fixes required are for bus error handling (instructions were still sometimes changing memory and registers after a page fault even though I had already partially fixed it before; I now have it saving the registers before every instruction and pushing those on page fault similar to what current MESS does - this isn't actually what a real 68k does and may sometimes throw off register dumps but it does work; I also have it using longjmp to immediately stop any instruction that page faults), as well as zero page access (another thing that I had tried to fix before; I had previously only allowed reads from address 0, but some programs are expecting to read from higher addresses in the zero page, so I now allow reads from all zero page addresses). Another bug that I fixed was related to timing. The emulator was way slower than real-time on the non-Linux OSes that I tried (many of them impose a minimum on the amount of time a process can sleep, and the emulator was depending on being able to sleep for very short times, so I changed it to use longer sleeps). Unix would presumably boot multi-user without this fix though. However, the emulator is still not quite usable. The key mapping is not quite right (one problem is that the UNIX PC has separate "return" and "enter" keys, and there is no mapping for "enter", which is required to accept dialogs, and there might be other important keys that are missing). Also, neither the mouse nor the RTC are emulated yet. Here's a screenshot: http://imgur.com/GzWkUbs I'll post my patches very soon.