diff options
Diffstat (limited to 'ldlinux.asm')
| -rw-r--r-- | ldlinux.asm | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/ldlinux.asm b/ldlinux.asm index 4a9d4755..50b5d8e4 100644 --- a/ldlinux.asm +++ b/ldlinux.asm @@ -16,7 +16,7 @@ ; then the first sector (cluster, really, but we can only assume 1 sector) ; of LDLINUX.SYS at 7E00h and finally the remainder of LDLINUX.SYS at 8000h. ; -; Copyright (C) 1994-2002 H. Peter Anvin +; Copyright (C) 1994-2004 H. Peter Anvin ; ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by @@ -185,9 +185,6 @@ VGAPos resw 1 ; Pointer into VGA memory VGACluster resw 1 ; Cluster pointer for VGA image file VGAFilePtr resw 1 ; Pointer into VGAFileBuf Com32SysSP resw 1 ; SP saved during COM32 syscall -TextAttrBX equ $ -TextAttribute resb 1 ; Text attribute for message file -TextPage resb 1 ; Active display page CursorDX equ $ CursorCol resb 1 ; Cursor column for message file CursorRow resb 1 ; Cursor row for message file @@ -199,6 +196,7 @@ FlowControl equ $ FlowOutput resb 1 ; Outputs to assert for serial flow FlowInput resb 1 ; Input bits for serial flow FlowIgnore resb 1 ; Ignore input unless these bits set +TextAttribute resb 1 ; Text attribute for message file RetryCount resb 1 ; Used for disk access retries KbdFlags resb 1 ; Check for keyboard escapes LoadFlags resb 1 ; Loadflags from kernel @@ -504,13 +502,15 @@ found_it: ; Note: we actually leave two words on the stack here ; ; ; writestr: write a null-terminated string to the console +; This assumes we're on page 0. This is only used for early +; messages, so it should be OK. ; writestr: .loop: lodsb and al,al jz .return mov ah,0Eh ; Write to screen as TTY - mov bx,0007h ; White on black, current page + mov bx,0007h ; Attribute int 10h jmp short .loop .return: ret @@ -1197,14 +1197,15 @@ dir_return: ; ; writechr: Write a single character in AL to the console without -; mangling any registers +; mangling any registers; handle video pages correctly. ; writechr: call write_serial ; write to serial port if needed pushfd pushad mov ah,0Eh - mov bx,0007h ; white text on this page + mov bl,07h ; attribute + mov bh,[cs:BIOS_page] ; current page int 10h popad popfd |