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From: "F.J.Ballesteros" <>
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Subject: [9fans] how to install the bitsy these days
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List-Id: Fans of the OS Plan 9 from Bell Labs <>
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Date: Fri, 15 Jun 2001 09:40:30 +0200
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	to make a long story short, the bootldr
used when /sys/src/9bitsy/bitsy/Booting101 was made is
unable to suspend the bitsy. This means that you'll
have to upgrade bootldr to get more of your on/off button.

Do not use version 13 of the bootldr, it hangs the bitsy.

I'm using 2.14.5, although the current version 2.14.8 is
likely to work (did not test that, though).

The file I include here is an updated version of Booting101,
to be used after applying the changes to il.s and devsac.c.

The quick instructions are just doing a
	partition reset
	partition define root 0x80000 0x80000 0
	partition define ramdisk 0x100000 0x700000 0
	params save
with the new bootldr and then install 9bitsy and ramdisk.

Ah, forgot to say that you should think twice before doing
what this Booting101 suggests, I double checked it to be sure
it was what I did, but I make mistakes (many of them ☺).

hope this helps

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The bitsy comes with Wince. To get to Plan 9, you will need a serial cable,
a Windows machine with a serial interface, the CDROM that comes with the bitsy,
and a Plan 9 machine with a serial interface. The Windows machine is used to
get the Linux boot loader onto the bitsy (and to save away wince, if you so
desire). The Plan 9 machine is used to get the plan 9 kernel and a read only
file system onto the bitsy.

0) charge up the bitsy.

1) go to
   and go through the steps to get the linux boot loader into the flash.
   This is where you'll need the CDROM and the Windows machine. Roughly
   the steps are:

	a) install activesync from the cdrom
	b) use activesync to copy osloader-1.3.0.exe to wince's fs.
	c) run osloader-1.3.0.exe. This is a RAM
	   version of the boot loader whose only real function is to
	   put the final version of the boot loader into the flash.
	d) Optionally select Tools->Flash->Save to make a backup copy of
	your flash
	e) Select Tools->Bootldr->Run (screen goes blank)
	f) In plan 9 use con -b115200 /dev/eia[01] to connect to the bitsy
	g) hit enter
	h) load the bootldr-0000-2.14.5 using xms

	You are adviced to follow the instructions in the install.html
	file mentioned above, since this is delicate and could turn your
	bitsy into a paperweight if you fail to install the boot loader

   This is more than a bit convoluted. Windows runs its applications
   from flash. The odd dance is to get a windows program (osloader)
   running from flash to then load a bootldr into ram and jump to it.
   That bootldr can then destroy the flash since it isn't running there.
   Finally you copy into the beginning of flash a copy of bootldr that
   knows it is being started in flash. When you power up the bitsy it
   starts executing at location 0 in the flash so the `real' bootldr
   has to live there. The only difference between the first and second
   bootldr is in initialization.

2) You are now done with wince. Connect the serial cable to a Plan 9 machine.

3) In a plan 9 window (turn on scrolling)

	con -b115200 /dev/eia[01]

   You'll have to figure out whether it's 0 or 1 on your machine.

4) Reboot the bitsy by cycling power using the dip switch under the sliding door
   at the bottom of the bitsy. In the con window, hit spaces.
   If you don't see the boot> prompt, try with spaces+enter.

5) In the con window type
	partition reset
	partition define root 0x80000 0x80000 0x0
	partition define ramdisk 0x100000 0x700000 0x0
	params save

   This defines the flash partitions where to load the kernel and the ram disk.

6) In the con window type

	load kernel

7) in the con window type


   to get con's >>> prompt. Then

	!xms /sys/src/9/bitsy/9bitsy

   This does an xmodem load of the kernel

8) In the con window type

	load ramdisk

9) in the con window type


   to get con's >>> prompt. Then

	!xms /sys/src/9/bitsy/ramdisk

   This does an xmodem load of the read only file system

10) Cycle power again to reboot. A screen will come up that says

	root is from [sac]:

   Just wait a while or hit enter in the con window and it'll continue.

11) The bitsy will now want to calibrate the screen. It'll put up
   a series of crosses that you should tap the center of. Hold the
   machine in your hand the way you'ld normally use it or the calibration
  could be off since there is depth to the glass in the screen.

12) You'll get a new screen with a blank top
  and a keyboard/scribble area at the bottom. This is a simple
  one file editor. This file is similar to plan9.ini on PC's.
  You need to enter a few things:


  When you're done, hit the quit key on the simulated keyboard.

  The system will now come up as you.

13) To get your password into the system:

	# auth/iam

    After this you can run cpu, 9fs, whatever...