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second_stage.asm
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665 lines (632 loc) · 9.54 KB
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[BITS 16]
; TODO: - implement APM shutdown http://wiki.osdev.org/APM
; - encapsulation for functions
MOV AX, CS ; initialize
MOV DS, AX ; segments
MOV ES, AX ; correctly, ALWAYS gen
CALL Clear_screen
CALL Draw_rect
CALL Delay
CALL Clear_screen
CALL Reset_cursor
MOV SI, INTRO
CALL PrintShell
MOV SI, EMPTY_CHAR
CALL PrintShell
CALL Date
CALL Convert_century_os
CALL Convert_year_os
MOV SI, DATE_FIELD_OS
CALL PrintShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, BUNA_SEARA
CALL Print
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, OPTIONS
CALL PrintShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, PLEASE
CALL PrintShell
CALL Read
Draw_rect:
PUSHA
MOV AH, 0xC
MOV BL, 0x32
MOV CX, 0x140
MOV DX, 0x12C
MOV AL, 0xE
Draw1:
CALL Delay_char
INT 0x10
DEC BL
DEC CX
DEC DX
CMP BL, 0
JE Restore_var1
JMP Draw1
Restore_var1:
MOV BL, 0x32
MOV CX, 0x140
MOV DX, 0x12C
JMP Draw2
Draw2:
CALL Delay_char
INT 0x10
DEC BL
INC CX
DEC DX
CMP BL, 0
JE Restore_var2
JMP Draw2
Restore_var2:
MOV BL, 0x32
MOV CX, 0x10E
MOV DX, 0xFA
JMP Draw3
Draw3:
CALL Delay_char
INT 0x10
DEC BL
INC CX
DEC DX
CMP BL, 0
JE Restore_var3
JMP Draw3
Restore_var3:
MOV BL, 0x32
MOV CX, 0x172
MOV DX, 0xFA
JMP Draw4
Draw4:
CALL Delay_char
INT 0x10
DEC BL
DEC CX
DEC DX
CMP BL, 0
JE Exit_draw
JMP Draw4
Exit_draw:
POPA
RET
FreeDraw:
CALL Clear_screen
MOV AH, 0xC
MOV BH, 0x0
MOV CX, 0x140
MOV DX, 0x12C
MOV AL, 0xB
Check_keypress:
INT 0x10
MOV AH, 0x0
INT 0x16
CMP AL, 0x77
JE draw_up
CMP AL, 0x73
JE draw_down
CMP AL, 0x61
JE draw_left
CMP AL, 0x64
JE draw_right
CMP AL, 0x63
JE exit_FreeDraw
draw_up:
DEC DX
MOV AH, 0xC
MOV BH, 0x0
MOV AL, 0xB
JMP Check_keypress
draw_down:
INC DX
MOV AH, 0xC
MOV BH, 0x0
MOV AL, 0xB
JMP Check_keypress
draw_left:
DEC CX
MOV AH, 0xC
MOV BH, 0x0
MOV AL, 0xB
JMP Check_keypress
draw_right:
INC CX
MOV AH, 0xC
MOV BH, 0x0
MOV AL, 0xB
JMP Check_keypress
exit_FreeDraw:
CALL Clear_screen
CALL Reset_cursor
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
Note_pad_init:
CALL Clear_screen
CALL Reset_cursor
JMP Note_pad
Note_pad:
MOV AH, 0x0
INT 0x16
CALL PrintCharInfoShell
CMP AL, 0x1B
JE exit_note_pad
CMP AL, 0xD
JE new_line_notepad
JMP Note_pad
new_line_notepad:
MOV SI, EMPTY_LINE
CALL PrintInfoShell
JMP Note_pad
exit_note_pad:
CALL Clear_screen
CALL Reset_cursor
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
Clear_screen:
PUSHA
MOV AH, 0x06
MOV AL, 0
MOV BH, 0
MOV CX, 0
MOV DH, 0x1E
MOV DL, 0x50
INT 0x10
POPA
RET
Reset_cursor:
PUSHA
MOV AH, 0x02
MOV BH, 0
MOV DH, 0
MOV DL, 0
INT 0x10
POPA
RET
PrintChar:
CALL Delay_char
MOV BL, 0xA
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
PrintCharShell:
MOV BL, 0xA
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
PrintCharWarning:
CALL Delay_char
MOV BL, 0xC
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
PrintCharWarningShell:
MOV BL, 0xC
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
PrintCharInfo:
CALL Delay_char
MOV BL, 0xB
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
PrintCharInfoShell:
MOV BL, 0xB
MOV BH, 0
MOV AH, 0xE
INT 0x10
RET
Print:
PUSHA
next_character:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_print
CALL PrintChar
JMP next_character
exit_print:
POPA
RET
PrintShell:
PUSHA
next_characterShell:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_printShell
CALL PrintCharShell
JMP next_characterShell
exit_printShell:
POPA
RET
PrintWarning:
PUSHA
next_characterWarning:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_printWarning
CALL PrintCharWarning
JMP next_characterWarning
exit_printWarning:
POPA
RET
PrintWarningShell:
PUSHA
next_characterWarningShell:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_printWarningShell
CALL PrintCharWarningShell
JMP next_characterWarningShell
exit_printWarningShell:
POPA
RET
PrintInfo:
PUSHA
next_characterInfo:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_printInfo
CALL PrintCharInfo
JMP next_characterInfo
exit_printInfo:
POPA
RET
PrintInfoShell:
PUSHA
next_characterInfoShell:
MOV AL, [SI]
INC SI
OR AL, AL
JZ exit_printInfoShell
CALL PrintCharInfoShell
JMP next_characterInfoShell
exit_printInfoShell:
POPA
RET
Read:
MOV AH, 0x0
INT 0x16
CMP AL, 0x52
JE read_exit
CMP AL, 0x49
JE read_exit_shell
JMP Read
read_exit:
MOV BL, 0xC
MOV BH, 0
MOV AH, 0xE
INT 0x10
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, SEARA_BUNA
CALL PrintWarning
CALL Delay
MOV SI, POINT
CALL PrintWarning
CALL Delay
MOV SI, POINT
CALL PrintWarning
CALL Delay
MOV SI, POINT
CALL PrintWarning
CALL Delay
JMP Reboot
read_exit_shell:
MOV BL, 0xB
MOV BH, 0
MOV AH, 0xE
INT 0x10
MOV SI, EMPTY_LINE
CALL PrintShell
JMP NewLineShell
ReadShell:
MOV AH, 0x0
INT 0x16
CMP AL, 0x08 ;Backspace
JE Delete_char
CMP AL, 0xD ;CRLF
JE Run_command
CALL PrintCharShell
MOV CL, AL
JMP ReadShell
Run_command:
CMP CL, 0
JE NewLineShell
CMP CL, 0x3F ;?
JE h_print_help
; Make any character lowercase by flipping bits 6 and 7 to 1
OR CL, 01100000b
CMP CL, 0x6E ;n
JE Note_pad_init
CMP CL, 0x67 ;g
JE FreeDraw
CMP CL, 0x74 ;t
JE t_print_time
CMP CL, 0x64 ;d
JE d_print_date
CMP CL, 0x68 ;h
JE h_print_help
CMP CL, 0x72 ;r
JE read_exit
CMP CL, 0x63 ;c
JE c_clear_screen
JMP Bad_command
Delete_char:
CALL Check_cursor_position
CALL PrintCharShell
MOV AL, ' '
CALL PrintCharShell
MOV AL, 0x08
CALL PrintCharShell
XOR CL, CL
JMP ReadShell
Bad_command:
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, ERR_COMMAND
CALL PrintWarningShell
JMP NewLineShell
NewLineShell:
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
t_print_time:
CALL Time
CALL Convert_hours
CALL Convert_minutes
CALL Convert_seconds
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, TIME_FIELD
CALL PrintInfoShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
d_print_date:
CALL Date
CALL Convert_month
CALL Convert_day
CALL Convert_century
CALL Convert_year
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, DATE_FIELD
CALL PrintInfoShell
MOV SI, EMPTY_LINE
CALL PrintShell
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
h_print_help:
MOV SI, HELP
CALL PrintInfoShell
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
c_clear_screen:
CALL Clear_screen
CALL Reset_cursor
MOV SI, SHELL_PROMPT
CALL PrintShell
XOR CL, CL
JMP ReadShell
Check_cursor_position:
PUSHA
MOV AH, 0x3
MOV BH, 0
INT 0x10
CMP DL, 3
JE Fix_cursor_position
POPA
RET
Fix_cursor_position:
MOV AH, 0x2
MOV DL, 3
INT 0x10
POPA
XOR CL, CL
JMP ReadShell
Reboot:
INT 19h
Delay:
PUSHA
MOV BL, 10h
MOV AH, 0
INT 0x1A
ADD BX, DX
tloop:
MOV AH, 0
INT 0x1A
CMP DX, BX
JG tloop2
JMP tloop
tloop2:
POPA
RET
Delay_char:
PUSHA
MOV BL, 0
MOV AH, 0
INT 0x1A
ADD BX, DX
tloop3:
MOV AH, 0
INT 0x1A
CMP DX, BX
JG tloop4
JMP tloop3
tloop4:
POPA
RET
Date:
MOV AH, 0x04
INT 0x1A
RET
;leaves CF unchanged if successful
; TODO: CF should be cleared before calling this function
;CH - CENTURY
;CL - YEAR
;DH - MONTH
;DL - DAY
Convert_month:
MOV BH, DH
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD + 3], BH
MOV BH, DH
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD + 4], BH
RET
Convert_day:
MOV BH, DL
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD], BH
MOV BH, DL
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD + 1],BH
RET
Convert_century:
MOV BH, CH
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD + 6], BH
MOV BH, CH
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD + 7], BH
RET
Convert_year:
MOV BH, CL
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD + 8], BH
MOV BH, CL
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD + 9], BH
RET
Convert_century_os:
PUSHA
MOV BH, CH
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD_OS], BH
MOV BH, CH
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD_OS + 1], BH
POPA
RET
Convert_year_os:
PUSHA
MOV BH, CL
SHR BH, 4
ADD BH, 30H
MOV [DATE_FIELD_OS + 2], BH
MOV BH, CL
AND BH, 0FH
ADD BH, 30H
MOV [DATE_FIELD_OS + 3], BH
POPA
RET
Time:
MOV AH, 02H
INT 1AH
RET
;leaves CF unchanged if successful
; TODO: CF should be cleared before calling this function
;CH - HOURS
;CL - MINUTES
;DH - SECONDS
Convert_hours:
MOV BH, CH
SHR BH, 4
ADD BH, 30H
MOV [TIME_FIELD], BH
MOV BH, CH
AND BH, 0FH
ADD BH, 30H
MOV [TIME_FIELD + 1], BH
RET
Convert_minutes:
MOV BH, CL
SHR BH, 4
ADD BH, 30H
MOV [TIME_FIELD + 3], BH
MOV BH, CL
AND BH, 0FH
ADD BH, 30H
MOV [TIME_FIELD + 4], BH
RET
Convert_seconds:
MOV BH, DH
SHR BH, 4
ADD BH, 30H
MOV [TIME_FIELD + 6], BH
MOV BH, DH
AND BH, 0FH
ADD BH, 30H
MOV [TIME_FIELD + 7], BH
RET
INTRO:
db 0x40, "BLidOS", 0
BUNA_SEARA:
db "Hello, World!", 0
OPTIONS:
db "(R) Reboot", 0dh, 0ah,"(I) Interactive shell / Recovery", 0dh, 0ah,"(B) Boot to OS", 0
PLEASE:
db "Please choose an option: ", 0
SEARA_BUNA:
db 'Shutting down', 0
SHELL_PROMPT:
db '#> ', 0
EMPTY_LINE:
db 0dh, 0ah, 0
EMPTY_CHAR:
db ' ',0
POINT:
db '.', 0
BAR:
db 0x7C, 0
HELP:
db 0dh, 0ah, 0dh, 0ah, " h -- show this help summary", 0dh, 0ah, " g -- load PaintBleed (press c to exit)", 0dh, 0ah, " n -- load bVim (press ESC to exit)", 0dh, 0ah, " t -- print time", 0dh, 0ah, " d -- print date", 0dh, 0ah, " c -- clear screen", 0dh, 0ah, " r -- reboot", 0dh, 0ah, 0dh, 0ah, 0
DATE_FIELD:
db '00/00/0000', 0
TIME_FIELD:
db '00:00:00', 0
DATE_FIELD_OS:
db '0000', 0
ERR_COMMAND:
db 'Invalid command! Type h for help', 0
times 2048 -( $ - $$ ) db 0