Initial commit

Co-authored-by: Robbe Van Herck <robbevanherck1@gmail.com>
This commit is contained in:
redfast00 2019-05-21 20:08:21 +02:00
commit a8a206884f
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.gitignore vendored Normal file
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MyBoot.bin
bochsout.txt
bx_enh_dbg.ini

518
bochs.conf Normal file
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plugin_ctrl: speaker=0
magic_break: enabled=1
display_library: x, options="gui_debug"
#=======================================================================
# ROMIMAGE:
# You now need to load a ROM BIOS into F0000-FFFFF. I've wiped
# out most of the BIOS hooks, and replace them with real BIOS
# support. Normally, you can use a precompiled BIOS in the bios/
# directory, named BIOS-bochs-latest.
#=======================================================================
#romimage: bios/BIOS-bochs-970717a
##romimage: file=BIOS-bochs-latest, address=0xf0000
romimage: file=/usr/share/bochs/BIOS-bochs-legacy
#romimage: file=bios/BIOS-bochs-2-processors, address=0xf0000
#romimage: file=bios/BIOS-bochs-4-processors, address=0xf0000
#romimage: file=bios/rombios.bin, address=0xf0000
#=======================================================================
# MEGS
# set this to the default number of Megabytes of memory you want
# to emulate. You may also pass the '-megs xyz' option to bochs
#
# The default is 32MB, most OS's won't need more than that.
#=======================================================================
#megs: 256
#megs: 128
#megs: 64
megs: 32
#megs: 16
#megs: 8
vgaromimage: file=/usr/share/bochs/VGABIOS-lgpl-latest-cirrus
#=======================================================================
# FLOPPYA:
# Point this to pathname of floppy image file or device
# This should be of a bootable floppy(image/device) if you're
# booting from 'a'.
#
# You can set the initial status of the media to 'ejected' or 'inserted'.
# floppya: 2_88=path, status=ejected (2.88M 3.5" floppy)
# floppya: 1_44=path, status=inserted (1.44M 3.5" floppy)
# floppya: 1_2=path, status=ejected (1.2M 5.25" floppy)
# floppya: 720k=path, status=inserted (720K 3.5" floppy)
# floppya: 360k=path, status=inserted (360K 5.25" floppy)
#
# The path should be the name of a disk image file. On unix, you can use
# a raw device name such as /dev/fd0 on Linux. On WinNT and Win2k, use
# drive letters such as a: or b: as the path. Raw floppy access is not
# supported on Windows 95 and 98.
#=======================================================================
floppya: 1_44=MyBoot.bin, status=inserted
#floppya: file=../1.44, status=inserted
#floppya: 1_44=/dev/fd0H1440, status=inserted
#floppya: 1_2=../1_2, status=inserted
#floppya: 1_44=a:, status=inserted
#floppya: 1_44=a.img, status=inserted
#=======================================================================
# FLOPPYB:
# See FLOPPYA above for syntax
#=======================================================================
#floppyb: 1_44=b:, status=inserted
#floppyb: 1_44=b.img, status=inserted
#=======================================================================
# ATA0, ATA1, ATA2, ATA3
# ATA controller for hard disks and cdroms
#
# ata[0-3]: enabled=[0|1], ioaddr1=addr, ioaddr2=addr, irq=number
#
# These options enables up to 4 ata channels. For each channel
# the two base io address and the irq must be specified.
#
# ata0 is enabled by default, with ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
#
# Examples:
# ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
# ata1: enabled=1, ioaddr1=0x170, ioaddr2=0x370, irq=15
# ata2: enabled=1, ioaddr1=0x1e8, ioaddr2=0x3e8, irq=11
# ata3: enabled=1, ioaddr1=0x168, ioaddr2=0x368, irq=9
#=======================================================================
ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
ata1: enabled=0, ioaddr1=0x170, ioaddr2=0x370, irq=15
ata2: enabled=0, ioaddr1=0x1e8, ioaddr2=0x3e8, irq=11
ata3: enabled=0, ioaddr1=0x168, ioaddr2=0x368, irq=9
#=======================================================================
# ATA[0-3]-MASTER, ATA[0-3]-SLAVE
#
# This defines the type and characteristics of all attached ata devices:
# type= type of attached device [disk|cdrom]
# path= path of the image
# cylinders= only valid for disks
# heads= only valid for disks
# spt= only valid for disks
# status= only valid for cdroms [inserted|ejected]
# biosdetect= type of biosdetection [none|auto], only for disks on ata0 [cmos]
# translation=type of transation of the bios, only for disks [none|lba|large|rechs|auto]
# model= string returned by identify device command
#
# Point this at a hard disk image file, cdrom iso file, or physical cdrom
# device. To create a hard disk image, try running bximage. It will help you
# choose the size and then suggest a line that works with it.
#
# In UNIX it may be possible to use a raw device as a Bochs hard disk,
# but WE DON'T RECOMMEND IT. In Windows there is no easy way.
#
# In windows, the drive letter + colon notation should be used for cdroms.
# Depending on versions of windows and drivers, you may only be able to
# access the "first" cdrom in the system. On MacOSX, use path="drive"
# to access the physical drive.
#
# The path, cylinders, heads, and spt are mandatory for type=disk
# The path is mandatory for type=cdrom
#
# Default values are:
# biosdetect=auto, translation=auto, model="Generic 1234"
#
# The biosdetect option has currently no effect on the bios
#
# Examples:
# ata0-master: type=disk, path=10M.sample, cylinders=306, heads=4, spt=17
# ata0-slave: type=disk, path=20M.sample, cylinders=615, heads=4, spt=17
# ata1-master: type=disk, path=30M.sample, cylinders=615, heads=6, spt=17
# ata1-slave: type=disk, path=46M.sample, cylinders=940, heads=6, spt=17
# ata2-master: type=disk, path=62M.sample, cylinders=940, heads=8, spt=17
# ata2-slave: type=disk, path=112M.sample, cylinders=900, heads=15, spt=17
# ata3-master: type=disk, path=483M.sample, cylinders=1024, heads=15, spt=63
# ata3-slave: type=cdrom, path=iso.sample, status=inserted
#=======================================================================
#ata0-master: type=disk, path="30M.sample", cylinders=615, heads=6, spt=17
#ata0-slave: type=cdrom, path=D:, status=inserted
#ata0-slave: type=cdrom, path=/dev/cdrom, status=inserted
#ata0-slave: type=cdrom, path="drive", status=inserted
#=======================================================================
#
# The DISKC option is deprecated. Use ATA* options instead.
#
# DISKC: file=, cyl=, heads=, spt=
# Point this at a hard disk image file. To create
# a hard disk image, try running bximage. It will help you choose the
# size and then suggest a diskc line that works with it.
#
# In UNIX it may be possible to use a raw device as a Bochs hard disk,
# but WE DON'T RECOMMEND IT. In Windows there is no easy way.
#
# Examples:
# diskc: file=10M.sample, cyl=306, heads=4, spt=17
# diskc: file=20M.sample, cyl=615, heads=4, spt=17
# diskc: file=30M.sample, cyl=615, heads=6, spt=17
# diskc: file=46M.sample, cyl=940, heads=6, spt=17
# diskc: file=62M.sample, cyl=940, heads=8, spt=17
# diskc: file=112M.sample, cyl=900, heads=15, spt=17
# diskc: file=483M.sample, cyl=1024, heads=15, spt=63
#=======================================================================
#diskc: file="30M.sample", cyl=615, heads=6, spt=17
#=======================================================================
#
# The DISKD option is deprecated. Use ATA* options instead.
#
# DISKD:
# See DISKC above for syntax
#
# NOTE: diskd and cdromd must not be used together!
#=======================================================================
#diskd: file="diskd.img", cyl=615, heads=6, spt=17
#=======================================================================
#
# The CDROMD option is deprecated. Use ATA* options instead.
#
# CDROMD:
#
# cdromd: dev=/dev/cdrom, status=inserted
# cdromd: dev=/dev/cdrom, status=ejected
# cdromd: dev=e:, status=ejected
#
# In windows, the drive letter + colon notation should be used for cdroms.
# Depending on versions of windows and drivers, you may only be able to
# access the "first" cdrom in the system. On MacOSX, use path="drive"
# to access the physical drive.
#
# NOTE: diskd and cdromd must not be used together!
#=======================================================================
#cdromd: dev=D:, status=inserted
#cdromd: dev=/dev/cdrom, status=inserted
#cdromd: dev="drive", status=inserted
#=======================================================================
# NEWHARDDRIVESUPPORT: enabled=[0|1]
# As of cvs version on 5/17/2001, newharddrivesupport is on by default.
#=======================================================================
#newharddrivesupport: enabled=1
#=======================================================================
# BOOT:
# This defines your boot drive.
# You can either boot from 'floppy', 'disk' or 'cdrom'
# legacy 'a' and 'c' are also supported
# Examples:
# boot: floppy
# boot: disk
# boot: cdrom
# boot: c
# boot: a
#=======================================================================
boot: floppy
#boot: disk
#=======================================================================
# FLOPPY_BOOTSIG_CHECK: disabled=[0|1]
# Enables or disables the 0xaa55 signature check on boot floppies
# Defaults to disabled=0
# Examples:
# floppy_bootsig_check: disabled=0
# floppy_bootsig_check: disabled=1
#=======================================================================
#floppy_bootsig_check: disabled=1
floppy_bootsig_check: disabled=0
#=======================================================================
# LOG:
# Give the path of the log file you'd like Bochs debug and misc. verbage
# to be written to. If you really don't want it, make it /dev/null. :^(
#
# Examples:
# log: ./bochs.out
# log: /dev/tty
#=======================================================================
#log: /dev/null
log: bochsout.txt
#=======================================================================
# LOGPREFIX:
# This handles the format of the string prepended to each log line.
# You may use those special tokens :
# %t : 11 decimal digits timer tick
# %i : 8 hexadecimal digits of cpu0 current eip
# %e : 1 character event type ('i'nfo, 'd'ebug, 'p'anic, 'e'rror)
# %d : 5 characters string of the device, between brackets
#
# Default : %t%e%d
# Examples:
# logprefix: %t-%e-@%i-%d
# logprefix: %i%e%d
#=======================================================================
#logprefix: %t%e%d
#=======================================================================
# LOG CONTROLS
#
# Bochs now has four severity levels for event logging.
# panic: cannot proceed. If you choose to continue after a panic,
# don't be surprised if you get strange behavior or crashes.
# error: something went wrong, but it is probably safe to continue the
# simulation.
# info: interesting or useful messages.
# debug: messages useful only when debugging the code. This may
# spit out thousands per second.
#
# For events of each level, you can choose to crash, report, or ignore.
# TODO: allow choice based on the facility: e.g. crash on panics from
# everything except the cdrom, and only report those.
#
# If you are experiencing many panics, it can be helpful to change
# the panic action to report instead of fatal. However, be aware
# that anything executed after a panic is uncharted territory and can
# cause bochs to become unstable. The panic is a "graceful exit," so
# if you disable it you may get a spectacular disaster instead.
#=======================================================================
panic: action=ask
error: action=ask
info: action=report
debug: action=ignore
#=======================================================================
# DEBUGGER_LOG:
# Give the path of the log file you'd like Bochs to log debugger output.
# If you really don't want it, make it /dev/null or '-'. :^(
#
# Examples:
# debugger_log: ./debugger.out
#=======================================================================
#debugger_log: /dev/null
#debugger_log: debugger.out
debugger_log: -
#=======================================================================
# com1:
# This defines a serial (COM) port. You can specify a device to use as com1.
# This can be a real serial line, or a pty. To use a pty (under X/Unix),
# create two windows (xterms, usually). One of them will run bochs, and the
# other will act as com1. Find out the tty the com1 window using the `tty'
# command, and use that as the `dev' parameter. Then do `sleep 1000000' in
# the com1 window to keep the shell from messing with things, and run bochs in
# the other window. Serial I/O to com1 (port 0x3f8) will all go to the other
# window.
#=======================================================================
#com1: enabled=1, dev=/dev/ttyp9
#=======================================================================
# PARPORT1:
# This defines a parallel (printer) port. When turned on and an output file is
# defined the emulated printer port sends characters printed by the guest OS
# into the output file. On some platforms a device filename can be used to
# send the data to the real parallel port (e.g. "/dev/lp0" on Linux, "lpt1" on
# win32 platforms).
#
# Examples:
# parport1: enabled=1, file="parport.out"
# parport1: enabled=1, file="/dev/lp0"
# parport1: enabled=0
#=======================================================================
#parport1: enabled=1, file="parport.out"
parport1: enabled=0
#=======================================================================
# SB16:
# This defines the SB16 sound emulation. It can have several of the
# following properties.
# All properties are in the format sb16: property=value
# midi: The filename is where the midi data is sent. This can be a
# device or just a file if you want to record the midi data.
# midimode:
# 0=no data
# 1=output to device (system dependent. midi denotes the device driver)
# 2=SMF file output, including headers
# 3=output the midi data stream to the file (no midi headers and no
# delta times, just command and data bytes)
# wave: This is the device/file where wave output is stored
# wavemode:
# 0=no data
# 1=output to device (system dependent. wave denotes the device driver)
# 2=VOC file output, incl. headers
# 3=output the raw wave stream to the file
# log: The file to write the sb16 emulator messages to.
# loglevel:
# 0=no log
# 1=only midi program and bank changes
# 2=severe errors
# 3=all errors
# 4=all errors plus all port accesses
# 5=all errors and port accesses plus a lot of extra info
# dmatimer:
# microseconds per second for a DMA cycle. Make it smaller to fix
# non-continous sound. 750000 is usually a good value. This needs a
# reasonably correct setting for IPS.
#
# For an example look at the next line:
#=======================================================================
# sb16: midimode=1, midi=/dev/midi00, wavemode=1, wave=/dev/dsp, loglevel=2, log=sb16.log, dmatimer=600000
#=======================================================================
# VGA_UPDATE_INTERVAL:
# Video memory is scanned for updates and screen updated every so many
# virtual seconds. The default is 300000, about 3Hz. This is generally
# plenty. Keep in mind that you must tweak the 'ips:' directive
# to be as close to the number of emulated instructions-per-second
# your workstation can do, for this to be accurate.
#
# Examples:
# vga_update_interval: 250000
#=======================================================================
# vga_update_interval: 300000
vga: update_freq=30, realtime=1
# using for Winstone '98 tests
#vga_update_interval: 100000
#=======================================================================
# KEYBOARD_SERIAL_DELAY:
# Approximate time in microseconds that it takes one character to
# be transfered from the keyboard to controller over the serial path.
# Examples:
# keyboard_serial_delay: 200
#=======================================================================
keyboard: type=mf, serial_delay=200, paste_delay=100000
# keyboard_serial_delay: 250
# keyboard_paste_delay: 100000
#=======================================================================
# FLOPPY_COMMAND_DELAY:
# Time in microseconds to wait before completing some floppy commands
# such as read/write/seek/etc, which normally have a delay associated.
# I had this hardwired to 50,000 before.
#
# Examples:
# floppy_command_delay: 50000
#=======================================================================
#floppy_command_delay: 500
#=======================================================================
# IPS:
# Emulated Instructions Per Second. This is the number of IPS that bochs
# is capable of running on your machine. Read the note in config.h
# on how to find this. Make sure to recompile after.
#
# IPS is used to calibrate many time-dependent events within the bochs
# simulation. For example, changing IPS affects the frequency of VGA
# updates, the duration of time before a key starts to autorepeat, and
# the measurement of BogoMips and other benchmarks.
#
# Examples:
# Machine Mips
# ________________________________________________________________
# 650Mhz Athlon K-7 with Linux 2.4.4/egcs-2.91.66 2 to 2.5 Mips
# 400Mhz Pentium II with Linux 2.0.36/egcs-1.0.3 1 to 1.8 Mips
# 166Mhz 64bit Sparc with Solaris 2.x approx 0.75 Mips
# 200Mhz Pentium with Linux 2.x approx 0.5 Mips
#
#=======================================================================
cpu: ips=1000000
#=======================================================================
# PIT:
# The PIT is the programmable interval timer. It has an option that tries to
# keep the PIT in sync with real time. This feature is still experimental,
# but it may be useful if you want to prevent Bochs from running too fast, for
# example a DOS video game. Be aware that with the realtime pit option, your
# simulation will not be repeatable; this can a problem if you are debugging.
#=======================================================================
#pit: realtime=1
#=======================================================================
# mouse: Not used in any of the GUI specific modules, but the option
# bx_options.mouse_enabled is set to this value. The idea,
# is that the GUI code should not generate mouse events when
# not enabled. The hardware emualation itself is not disabled
# by this. This is to facilitate deterministic runs of bochs.
#
# Examples:
# mouse: enabled=1
# mouse: enabled=0
#
# I wouldn't recommend enabling the mouse by default, unless you have a
# really good reason to do so.
#=======================================================================
mouse: enabled=0
#=======================================================================
# private_colormap: Request that the GUI create and use it's own
# non-shared colormap. This colormap will be used
# when in the bochs window. If not enabled, a
# shared colormap scheme may be used. Not implemented
# on all GUI's.
#
# Examples:
# private_colormap: enabled=1
# private_colormap: enabled=0
#=======================================================================
private_colormap: enabled=0
#=======================================================================
# fullscreen: ONLY IMPLEMENTED ON AMIGA
# Request that Bochs occupy the entire screen instead of a
# window.
#
# Examples:
# fullscreen: enabled=0
# fullscreen: enabled=1
#=======================================================================
fullscreen: enabled=0
screenmode: name="sample"
# speaker: enabled=1, mode=system
# keyboard_mapping: enabled=0, map=
#=======================================================================
# KEYBOARD_TYPE:
# Type of keyboard return by a "identify keyboard" command to the
# keyboard controler. It must be one of "xt", "at" or "mf".
# Defaults to "mf". It should be ok for almost everybody. A known
# exception is french macs, that do have a "at"-like keyboard.
#
# Examples:
# keyboard_type: mf
#=======================================================================
#keyboard_type: mf
#=======================================================================
# USER_SHORTCUT:
# This defines the keyboard shortcut to be sent when you press the "user"
# button in the headerbar. The shortcut string can be a combination of
# these key names: "alt", "ctrl", "del", "esc", "f1", "f4", "tab", "win".
# Up to 3 keys can be pressed at a time.
#
# Example:
# user_shortcut: keys=ctrlaltdel
#=======================================================================
#user_shortcut: keys=ctrlaltdel
#=======================================================================
# other stuff
#=======================================================================
# magic_break
#load32bitOSImage: os=nullkernel, path=../kernel.img, iolog=../vga_io.log
#load32bitOSImage: os=linux, path=../linux.img, iolog=../vga_io.log, initrd=../initrd.img
# i440fxsupport: enabled=0
#time0: 938581955
#=======================================================================
# for Macintosh, use the style of pathnames in the following
# examples.
#
# vgaromimage: :bios:VGABIOS-elpin-2.20
# romimage: file=:bios:BIOS-bochs-981222a, address=0xf0000
# floppya: 1_44=[fd:], status=inserted
#=======================================================================
#vgaromimage: :bios:VGABIOS-elpin-2.40

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build.sh Executable file
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#!/bin/bash
rm -rf MyBoot.bin
nasm -f bin -o MyBoot.bin messages.asm

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emulate.sh Executable file
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#!/bin/bash
bochs -q -f bochs.conf

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messages.asm Normal file
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org 0x7C00
bits 16
WIDTH equ 0x50
HEIGHT equ 0x18
VIDEO_MODE equ 0x3
;; see http://www.ctyme.com/intr/int-10.htm for interrupts
start:
;; Use color mode
mov ax, VIDEO_MODE
int 10h
;; Clear screen
mov ah, 0x06
mov al, 0x00
mov bh, 0x0F
mov cx, 0x0000
mov dh, HEIGHT
mov dl, WIDTH
int 0x10
;; Set cursor to bottom of screen
mov dh, HEIGHT
mov dl, 0x00
mov bh, 0x00
mov ah, 0x02
int 0x10
.loop:
;; Read character
mov ah, 0x00
int 0x16
cmp al, 0x0d ; newline
je .newline
cmp al, 0x08 ; delete character
je .change_color_mode
jmp .nonewline
.change_color_mode:
;; Read character
mov ah, 0x00
int 0x16
mov [color_mode], al
jmp .loop
.newline:
;; Scroll up window
mov ah, 0x06
mov al, 0x01
mov bh, 0x0F
mov cx, 0x0000
mov dh, HEIGHT
mov dl, WIDTH
int 0x10
;; Get current cursor position
mov bh, 0x00
mov ah, 0x03
int 0x10
;; Move cursor to beginning of screen
mov dl, 0x00
mov ah, 0x02
int 0x10
jmp .loop
.nonewline:
;; Write character
mov ah, 0x09
mov bh, 0x00
mov bl, [color_mode]
mov cx, 0x01
int 0x10
;; Get current cursor position
mov ah, 0x03
int 0x10
cmp dl, WIDTH
jge .eol
jmp .noeol
.eol:
;; Scroll up window
mov ah, 0x06
mov al, 0x01
mov bh, 0x0F
mov cx, 0x0000
mov dh, HEIGHT
mov dl, WIDTH
int 0x10
;; Move cursor to beginning of screen
mov bh, 0
mov dh, HEIGHT
mov dl, 0x00
mov ah, 0x02
int 0x10
jmp .loop
.noeol:
;; Move cursor forward
inc dl
mov ah, 0x02
int 0x10
jmp .loop
halt: hlt
color_mode: db 0x05
times 510 - ($ - $$) db 0
dw 0xAA55

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run.sh Executable file
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#!/bin/bash
./build.sh && ./emulate.sh