diff options
Diffstat (limited to 'sys/arch/i386/boot/bios.S')
| -rw-r--r-- | sys/arch/i386/boot/bios.S | 46 |
1 files changed, 4 insertions, 42 deletions
diff --git a/sys/arch/i386/boot/bios.S b/sys/arch/i386/boot/bios.S index b6f79b5e5eb..fc2bc99fd4a 100644 --- a/sys/arch/i386/boot/bios.S +++ b/sys/arch/i386/boot/bios.S @@ -213,19 +213,14 @@ ok3: popl %ebp ret #endif -/* + #ifndef SERIAL +/* # BIOS call "INT 10H Function 0Eh" to write character to console # Call with %ah = 0x0e # %al = character # %bh = page # %bl = foreground color -#else -# BIOS call "INT 14H Function 01h" to write character to console -# Call with %ah = 0x01 -# %al = character -# %dx = port number -#endif */ ENTRY(putc) pushl %ebp @@ -240,16 +235,10 @@ ENTRY(putc) movb %cl, %al -#ifndef SERIAL movb $0x0e, %ah data32 movl $0x0001, %ebx int $0x10 # display a byte -#else - movb $0x01, %ah - xorl %edx, %edx - int $0x14 # display a byte -#endif data32 call _C_LABEL(real_to_prot) @@ -262,18 +251,10 @@ ENTRY(putc) /* -#ifndef SERIAL # BIOS call "INT 16H Function 00H" to read character from the keyboard # Call with %ah = 0x00 # Return: %ah = keyboard scan code # %al = ASCII character -#else -# BIOS call "INT 14H Function 02H" to read character from the serial port -# Call with %ah = 0x02 -# %dx = port number -# Return: %ah = line status -# %al = ASCII character -#endif */ ENTRY(getc) pushl %ebp @@ -284,14 +265,8 @@ ENTRY(getc) call _C_LABEL(prot_to_real) -#ifndef SERIAL movb $0x00, %ah int $0x16 -#else - movb $0x02, %ah - xorl %edx, %edx - int $0x14 -#endif movb %al, %bl # real_to_prot uses %eax @@ -309,7 +284,6 @@ ENTRY(getc) /* -#ifndef SERIAL # BIOS call "INT 16H Function 01H" to check whether a character is pending # Call with %ah = 0x01 # Return: @@ -319,13 +293,6 @@ ENTRY(getc) # ZF = clear # else # ZF = set -#else -# BIOS call "INT 14H Function 03H" to check whether a character is pending -# Call with %ah = 0x03 -# %dx = port number -# Return: %ah = line status -# %al = modem status -#endif */ ENTRY(ischar) pushl %ebp @@ -336,16 +303,9 @@ ENTRY(ischar) call _C_LABEL(prot_to_real) -#ifndef SERIAL movb $0x01, %ah int $0x16 setnz %ah -#else - movb $0x03, %ah - xorl %edx, %edx - int $0x14 - andb $0x1f, %ah -#endif movb %ah, %bl # real_to_prot uses %eax @@ -361,6 +321,8 @@ ENTRY(ischar) popl %ebp ret +#endif /* #ifndef SERIAL */ + /* # # get_diskinfo(): return a word that represents the |