Try giving plex86 the LBA values for the drive parameters......:
527 cyl, 255 heads, and 63sectors.
This should allow MS-DOS to see the drive like a good LBA BIOS would tell it
to. Try to keep in mind that those "bochs-opt" directives are the current
substitute for CMOS parameters stored on NVRAM. Good luck!!!!
Kenton Groombridge wrote:
> In reading though many of the posts in the last few months I found out
> that large drive support has been added with certain caveats. I can't
> change the configuration of the system that I need to make this work on.
>
> Essentially, if I can make this work, I can deploy Linux in the Army on
> approximately 50000 systems. It will definately get noticed.
>
> The drive partition is approximately 2 GB (whatever the largest
> partition size is for FAT16).
>
> I finally got a config file that appears to work (mostly).
>
> Here is a screen shot of system commander just starting up:
>
> http://web.infoave.net/~kgroombr/snapshot.gif
>
> I cheated the cyl, heads, and spt. The real disk parameters are 527
> cyl, 255 heads, and 63sectors. I changed it to the following so that it
> was within the limitations of the BIOS and IDE. Again, even though the
> disk is larger that 4GB, I only have the MSDOS partition (sda1) within
> the limits of FAT16.
>
> Here are the guts of the config file:
>
> plugin = ./plugins/bochs/plugin-bochs.so
> bochs-opt boot: c
> bochs-opt diskc: file="/dev/sda", cyl=8959, heads=15, spt=63
> bochs-opt floppya: 1_44="/dev/fd0", status=inserted
> bochs-opt cdromd: dev="/dev/scd1", status=inserted
> bochs-opt keyboard_serial_delay: 200
> bochs-opt floppy_command_delay: 500
> bochs-opt vga_update_interval: 200000
> bochs-opt mouse: enabled=0
> bochs-opt private_colormap: enabled=0
> bochs-opt i440fxsupport: enabled=0
> bochs-opt newharddrivesupport: enabled=1
> bochs-opt ips: 1000000
> bochs-init
>
> Everything works great. Even my System Commander starts loading and I
> can pick which OS to boot from. System Commander copies all the files
> from the C:\SC directory to the C:\ directory (msdos.sys, io.sys,
> command.com ..... all the files necessary for booting the selected OS).
>
> Then I get the following and MSDOS 6.22 never boots:
>
> Processing command-line options
> Opening VM (/dev/plex86)
> Processing config file ../conf/msdos...
> Allocating 16MB of physical memory in VM
> Mapping virtualized physical memory into monitor
> Zeroing virtualized physical memory
> Mapping monitor print buffer into user mem.
> bochs: ips = 1000000
> unmapped_c::init: IGNORING unmapped ports
> bochs: [cmos] Setting initial clock to: Sun Feb 25 01:14:29 2001
> disk: Experimental CDROM on target 1
> #::cdrom_interface: open failed on dev '/dev/scd1'.
> disk: Could not locate CD-ROM, continuing with media not present
> bochs: Opening image for device 0
> floppy open of /dev/fd0:
> : Device not configured
> bochs: bx_options.floppy_command_delay = 500
> vga construct static
> bochs: font_width = 8
> bochs: font_height = 16
> bochs: default_depth = 24
> bochs: waiting for MapNotify
> bochs: MapNotify found.
> bochs: vga: interval=200000
> vga init called
> bochs: TTY not used, serial port is not connected
> ROM: loading image '../bios/BIOS-plex86-current' @ 0xf0000 (65536 bytes)
> ROM: loading image '../bios/VGABIOS-elpin-2.40' @ 0xc0000 (32768 bytes)
> Setting prescan depth to 3
> prescan on
> Processed 66 lines of config file '../conf/msdos'
> Initializing plugins
> Running VM
> bochs: timer0 period set to 18 hz
> bochs: CMOS: write reg 14h: value = 05h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3da: ignoring: feature ctrl & vert sync
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: vga: io write 3c0: address mode reg=16
> bochs: vga: io write 3c0: address mode reg=17
> bochs: vga: io write 3c0: address mode reg=18
> bochs: vga: io write 3c0: address mode reg=19
> bochs: vga: io write 3c0: address mode reg=20
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: vga: io write 3c0: address mode reg=17
> bochs: vga: io write 3c0: address mode reg=16
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: update(): color text mode: mem map is 1
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write 3c0: address mode reg=17
> bochs: vga: io write 3c0: address mode reg=16
> bochs: MOUSE: kbd_ctrl_to_mouse(ffh)
> bochs: enable = 0
> bochs: allow_irq12 = 0
> bochs: aux_clock_enabled = 0
> bochs: KBD: controller_enQ(): OUTB set!
> bochs: KBD: controller_enQ(): OUTB set!
> bochs: MOUSE: kbd_ctrl_to_mouse(ffh)
> bochs: enable = 0
> bochs: allow_irq12 = 0
> bochs: aux_clock_enabled = 0
> bochs: KBD: controller_enQ(): OUTB set!
> bochs: KBD: controller_enQ(): OUTB set!
> bochs: MOUSE: kbd_ctrl_to_mouse(f4h)
> bochs: enable = 0
> bochs: allow_irq12 = 0
> bochs: aux_clock_enabled = 0
> bochs: MOUSE: kbd_ctrl_to_mouse(f5h)
> bochs: enable = 1
> bochs: allow_irq12 = 0
> bochs: aux_clock_enabled = 0
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: vga: io write: 3da: ignoring: feature ctrl & vert sync
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: vga: io write 3c0: address mode reg=16
> bochs: vga: io write 3c0: address mode reg=17
> bochs: vga: io write 3c0: address mode reg=18
> bochs: vga: io write 3c0: address mode reg=19
> bochs: vga: io write 3c0: address mode reg=20
> bochs: update(): color text mode: mem map is 1
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> bochs: vga: io write: 3cf: reg 05: value = 10h
> bochs: *** io read 3c5 case 1: sequencer clocking mode
> ::fetchDecode InvalidOpcode b1=0xFE nnn=7
>
> ::#UD: FE causes exception 6
>
> ::fetchDecode InvalidOpcode b1=0xFE nnn=7
>
> ::#UD: FE causes exception 6
>
> ::fetchDecode InvalidOpcode b1=0xFE nnn=7
>
> *************** and over and over and over and over and over until I
> click poweroff
>
> ::fetchDecode InvalidOpcode b1=0xFE nnn=7
>
> ::#UD: FE causes exception 6
>
> bochs: panic, POWER button turned off.
> Shutting down plugins
> bochs: Note: X11: bx_gui_c::exit() not implemented yet.
> Unmapping guest physical memory.
> Unmapping monitor print buffer.
> Tearing down VM
> Closing VM
>
> Thanks for any help,
> Ken
>
>
> James Mastros wrote:
> >
> > On Sat, Feb 24, 2001 at 03:53:57PM -0500, Kenton Groombridge wrote:
> > > Can plex86 utilize a device as opposed to a file disk image?
> > >
> > > Suppose I have msdos on /dev/sda1 or /mnt/msdos (either one, since I can
> > > choose to mount or umount the file system). Can I boot and operate off
> > > this device or filesystem? The guest os is msdos 6.22.
> > You /should/ be able to. And you /can/ do it if the drive is under 504M
> > (the old ide-not-atapi problem).
> >
> > -=- James Mastros
> > --
> > 90% of yiddish means "dick". You have to look past that to /what/ meaning
> > of "dick" it has.
> > AIM: theorbtwo homepage: http://www.rtweb.net/theorb/
>
> --
> Kenton Groombridge
> [EMAIL PROTECTED]
> http://web.infoave.net/~kgroombr/
--
Drew Northup, N1XIM
