+++ /dev/null
-default_target: vm
-.PHONY: vm clean
-
-boot.bin: boot.asm
- nasm -f bin -o boot.bin boot.asm
-
-nothing.img: boot.bin
- dd if=/dev/zero of=nothing.img bs=1M count=1
- parted -s nothing.img mklabel msdos
- parted -s -a optimal nothing.img mkpart primary fat32 0% 100%
- doas losetup /dev/loop1 nothing.img
- doas mkfs.fat /dev/loop1p1
- doas losetup -d /dev/loop1
- dd if=boot.bin of=nothing.img bs=1 count=446 conv=notrunc
- dd if=magic.bin of=nothing.img bs=1 seek=510 count=2 conv=notrunc
-
-vm: nothing.img
- qemu-system-x86_64 -hda nothing.img
-
-clean:
- rm -f boot.bin nothing.img
+++ /dev/null
-[bits 16]
-[org 0x7c00]
-
-; Initialize registers
-xor ax, ax
-mov ds, ax
-mov es, ax
-mov bx, 0x8000
-
-call boot
-
-; Print al register
-print_al:
- mov ah, 0x0e ; TTY output
- mov bh, 0x00 ; Page 0
- mov bl, 0x07 ; Color: Light grey on black background
- int 0x10
-
- ret
-
-; Call print_al on all characters in si
-; si must be null terminated
-print_bytes_si:
- mov cl, 0 ; Start with iteration 0 - equivalent of int i = 0
-print_bytes_si_loop:
- lodsb ; Load next characet of si into al
- call print_al
-
- inc cl
-
- cmp cl, ch
- jb print_bytes_si_loop
-
- ret
-
-; APM is not supported
-apm_error:
- mov ch, 9 ; Our string is 9 characters long
- mov si, apm_err
- call print_bytes_si
-
- jmp $ ; Infinite loop
-
-; Check APM support
-apm_chk:
- mov ah, 0x53 ; This is an APM command
- mov al, 0x00 ; APM: Installation Check
- mov bx, 0x0000 ; Device ID (0 is APM BIOS)
- int 0x15 ; Call
-
- jc apm_error ; Carry flag is set if there was an error
-
- cmp ah, 1 ; APM major version must be at least one
- jb apm_error
-
- cmp al, 1 ; APM minor version must be at least one
- jb apm_error
-
- ret
-
-
-; Disconnect from any APM interface
-apm_disco:
- mov ah, 0x53 ; This is an APM command
- mov al, 0x04 ; APM: Disconnect
- mov bx, 0x0000 ; Device ID (0 is APM BIOS)
- int 0x15 ; Call
-
- jc .apm_disco_error ; Carry flag is set if there was an error
- jmp .apm_disco_success
-
-; Disconnecting any APM interface failed
-.apm_disco_error:
- cmp ah, 0x03 ; Error code for no interface connected
- jne apm_error
-
-; No interface are connected now
-.apm_disco_success:
- ret
-
-; Connect to an APM interface
-apm_connect:
- mov ah, 0x53 ; This is an APM command
- mov bx, 0x0000 ; Device ID (0 is APM BIOS)
- int 0x15 ; Call
-
- jc apm_error ; Carry flag is set if there was an error
- ret
-
-; Set the APM Driver Version to 1.1
-apm_drv_init:
- mov ah, 0x53 ; This is an APM command
- mov al, 0x0e ; APM: Set Driver Supported Version
- mov bx, 0x0000 ; Device ID (0 is APM BIOS)
- mov ch, 1 ; APM Driver Major Version Number
- mov cl, 1 ; APM Driver Minor Version Number
- int 0x15 ; Call
-
- jc apm_error ; Carry flag is set if there was an error
- ret
-
-; Enable APM Power Management
-apm_mgmt_on:
- mov ah, 0x53 ; This is an APM command
- mov al, 0x08 ; APM: Change power management state
- mov bx, 0x0001 ; on all devices
- mov cx, 0x0001 ; to on
- int 0x15 ; Call
-
- jc apm_error ; Carry flag is set if there was an error
- ret
-
-; Power down the system
-apm_power_off:
- mov ah, 0x53 ; This is an APM command
- mov al, 0x07 ; APM: Set power state
- mov bx, 0x0001 ; on all devices
- mov cx, 0x0003 ; to off
- int 0x15 ; Call
-
- jc apm_error ; Carry flag is set if there was an error
- ret
-
-; Main
-boot:
- call apm_chk ; Is APM supported?
- call apm_disco ; Disconnect from any APM interface
-
- mov al, 0x01 ; Interface to connect to: Real Mode
- call apm_connect ; Connect to APM interface
-
- call apm_drv_init ; Set the APM Driver Version to 1.1
- call apm_mgmt_on ; Enable Power Management
-
- ; Clear the screen
- mov ah, 0x06
- mov al, 0x00
- mov bh, 0x07
- mov ch, 0x00
- mov cl, 0x00
- mov dh, 0xff
- mov dl, 0xff
- int 0x10
-
- ; Move cursor to 0, 0 on page 0
- mov ah, 0x02
- mov bh, 0 ; Page
- mov dh, 0 ; Row
- mov dl, 0 ; Column
- int 0x10
-
- mov ch, 5 ; Our string is 5 characters long
- mov si, hello
- call print_bytes_si
-
- mov ch, 29 ; Our string is 29 characters long
- mov si, paktc ; paktc: Press any key to continue
- call print_bytes_si
-
- mov ah, 0x00 ; Keyboard: Read key press
- int 0x16 ; Call
-
- call apm_power_off
- jmp $ ; Infinite loop
-
-hello db 'foo', 13, 10 ; \r\n
-apm_err db 'APM Error'
-paktc db 'Press any key to continue... '
-
-times (446 - ($ - $$)) db 0x00
--- /dev/null
+default_target: vm
+.PHONY: vm clean
+
+boot.bin: boot.asm
+ nasm -f bin -o boot.bin boot.asm
+
+nothing.img: boot.bin
+ dd if=/dev/zero of=nothing.img bs=1M count=1
+ parted -s nothing.img mklabel msdos
+ parted -s -a optimal nothing.img mkpart primary fat32 0% 100%
+ doas losetup /dev/loop1 nothing.img
+ doas mkfs.fat /dev/loop1p1
+ doas losetup -d /dev/loop1
+ dd if=boot.bin of=nothing.img bs=1 count=446 conv=notrunc
+ dd if=magic.bin of=nothing.img bs=1 seek=510 count=2 conv=notrunc
+
+vm: nothing.img
+ qemu-system-x86_64 -hda nothing.img
+
+clean:
+ rm -f boot.bin nothing.img
--- /dev/null
+[bits 16]
+[org 0x7c00]
+
+; Initialize registers
+xor ax, ax
+mov ds, ax
+mov es, ax
+mov bx, 0x8000
+
+call boot
+
+; Print al register
+print_al:
+ mov ah, 0x0e ; TTY output
+ mov bh, 0x00 ; Page 0
+ mov bl, 0x07 ; Color: Light grey on black background
+ int 0x10
+
+ ret
+
+; Call print_al on all characters in si
+; si must be null terminated
+print_bytes_si:
+ mov cl, 0 ; Start with iteration 0 - equivalent of int i = 0
+print_bytes_si_loop:
+ lodsb ; Load next characet of si into al
+ call print_al
+
+ inc cl
+
+ cmp cl, ch
+ jb print_bytes_si_loop
+
+ ret
+
+; APM is not supported
+apm_error:
+ mov ch, 9 ; Our string is 9 characters long
+ mov si, apm_err
+ call print_bytes_si
+
+ jmp $ ; Infinite loop
+
+; Check APM support
+apm_chk:
+ mov ah, 0x53 ; This is an APM command
+ mov al, 0x00 ; APM: Installation Check
+ mov bx, 0x0000 ; Device ID (0 is APM BIOS)
+ int 0x15 ; Call
+
+ jc apm_error ; Carry flag is set if there was an error
+
+ cmp ah, 1 ; APM major version must be at least one
+ jb apm_error
+
+ cmp al, 1 ; APM minor version must be at least one
+ jb apm_error
+
+ ret
+
+
+; Disconnect from any APM interface
+apm_disco:
+ mov ah, 0x53 ; This is an APM command
+ mov al, 0x04 ; APM: Disconnect
+ mov bx, 0x0000 ; Device ID (0 is APM BIOS)
+ int 0x15 ; Call
+
+ jc .apm_disco_error ; Carry flag is set if there was an error
+ jmp .apm_disco_success
+
+; Disconnecting any APM interface failed
+.apm_disco_error:
+ cmp ah, 0x03 ; Error code for no interface connected
+ jne apm_error
+
+; No interface are connected now
+.apm_disco_success:
+ ret
+
+; Connect to an APM interface
+apm_connect:
+ mov ah, 0x53 ; This is an APM command
+ mov bx, 0x0000 ; Device ID (0 is APM BIOS)
+ int 0x15 ; Call
+
+ jc apm_error ; Carry flag is set if there was an error
+ ret
+
+; Set the APM Driver Version to 1.1
+apm_drv_init:
+ mov ah, 0x53 ; This is an APM command
+ mov al, 0x0e ; APM: Set Driver Supported Version
+ mov bx, 0x0000 ; Device ID (0 is APM BIOS)
+ mov ch, 1 ; APM Driver Major Version Number
+ mov cl, 1 ; APM Driver Minor Version Number
+ int 0x15 ; Call
+
+ jc apm_error ; Carry flag is set if there was an error
+ ret
+
+; Enable APM Power Management
+apm_mgmt_on:
+ mov ah, 0x53 ; This is an APM command
+ mov al, 0x08 ; APM: Change power management state
+ mov bx, 0x0001 ; on all devices
+ mov cx, 0x0001 ; to on
+ int 0x15 ; Call
+
+ jc apm_error ; Carry flag is set if there was an error
+ ret
+
+; Power down the system
+apm_power_off:
+ mov ah, 0x53 ; This is an APM command
+ mov al, 0x07 ; APM: Set power state
+ mov bx, 0x0001 ; on all devices
+ mov cx, 0x0003 ; to off
+ int 0x15 ; Call
+
+ jc apm_error ; Carry flag is set if there was an error
+ ret
+
+; Main
+boot:
+ call apm_chk ; Is APM supported?
+ call apm_disco ; Disconnect from any APM interface
+
+ mov al, 0x01 ; Interface to connect to: Real Mode
+ call apm_connect ; Connect to APM interface
+
+ call apm_drv_init ; Set the APM Driver Version to 1.1
+ call apm_mgmt_on ; Enable Power Management
+
+ ; Clear the screen
+ mov ah, 0x06
+ mov al, 0x00
+ mov bh, 0x07
+ mov ch, 0x00
+ mov cl, 0x00
+ mov dh, 0xff
+ mov dl, 0xff
+ int 0x10
+
+ ; Move cursor to 0, 0 on page 0
+ mov ah, 0x02
+ mov bh, 0 ; Page
+ mov dh, 0 ; Row
+ mov dl, 0 ; Column
+ int 0x10
+
+ mov ch, 5 ; Our string is 5 characters long
+ mov si, hello
+ call print_bytes_si
+
+ mov ch, 29 ; Our string is 29 characters long
+ mov si, paktc ; paktc: Press any key to continue
+ call print_bytes_si
+
+ mov ah, 0x00 ; Keyboard: Read key press
+ int 0x16 ; Call
+
+ call apm_power_off
+ jmp $ ; Infinite loop
+
+hello db 'foo', 13, 10 ; \r\n
+apm_err db 'APM Error'
+paktc db 'Press any key to continue... '
+
+times (446 - ($ - $$)) db 0x00
projects / loadnothing.git / commitdiff