From 14b109ea24dc5cb1db948de57a2a44c80ef4622e Mon Sep 17 00:00:00 2001
From: Brett Weiland <brett_weiland@bpcspace.com>
Date: Wed, 24 Mar 2021 15:36:54 -0500
Subject: 	modified:   README.md 	modified:  
 compiler/create_crosscompiler.sh 	deleted:    notes 	modified:  
 src/.gdb_history 	deleted:    src/amd64_vol2.pdf 	modified:  
 src/bootloader/bios_functions/bios_disk.asm 	modified:  
 src/bootloader/bios_functions/print.asm 	modified:  
 src/bootloader/bootloader.asm 	modified:   src/bootloader/cpu_check.asm 
 modified:   src/bootloader/enter_kernel.asm 	deleted:   
 src/bootloader/enter_kernel_backup 	modified:   src/bootloader/gdt.asm 
 deleted:    src/bootloader/multicore.asm 	deleted:   
 src/bootloader/notes 	new file:   src/debug/gdbinit.gdb 	deleted:   
 src/indigo_os 	modified:   src/kernel/include/libc.h 	modified:  
 src/kernel/include/paging.h 	modified:   src/kernel/include/video.h 
 modified:   src/kernel/kernel.c 	modified:   src/kernel/libs/acpi.c 
 modified:   src/kernel/libs/drivers/serial.c 	modified:  
 src/kernel/libs/drivers/video.c 	modified:   src/kernel/libs/libc.c 
 modified:   src/kernel/libs/page.c 	modified:   src/link.ld 
 modified:   src/makefile 	new file:   tools/README.md 	modified:  
 tools/page/page.py

---
 src/bootloader/bios_functions/print.asm | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

(limited to 'src/bootloader/bios_functions/print.asm')

diff --git a/src/bootloader/bios_functions/print.asm b/src/bootloader/bios_functions/print.asm
index d071cd9..303fa8f 100644
--- a/src/bootloader/bios_functions/print.asm
+++ b/src/bootloader/bios_functions/print.asm
@@ -1,25 +1,24 @@
-;TODO fix null problem, allow direct passes
+;TODO fix null problem, allow passing value insted of pointer
 bios_print:
-;push ax       ; we need to use ax, so let's push it in case whoever called needs it
 pusha
-mov ah, 0x0e  ; tells bios we're in tty mode
+mov ah, 0x0e 
 
 .print_loop:
-mov al, [bx]          ; al is the char MEANT TO BE CX
-cmp al, 0             ; compare the char we're about to print with null
-je .fini   ; if it is null, we gonna scoot the fuck outta here
+mov al, [bx]          
+cmp al, 0             
+je .fini   
 
 test cx, cx           ; if cx is zero, ascii, otherwise hex string
 jne .print_hex
-int 0x10              ; bios call, actually prints the char
+int 0x10              
 .print_hex_ret:
-inc bx                ; adds to the pointer
-jmp .print_loop   ; goes back to loop start
+inc bx               
+jmp .print_loop   
 
 .fini:
-mov al, 0xd           ; \r
+mov al, 0xd           
 int 0x10
-mov al, 0xa           ; \n
+mov al, 0xa           
 int 0x10
 popa
 ret
@@ -32,7 +31,7 @@ int 0x10
 mov al, 'x'
 int 0x10
 
-mov al, [bx]              ; shift bits to get first nibble
+mov al, [bx]              
 shr al, 4
 call .bios_print_nibble
 
@@ -47,13 +46,13 @@ jmp .print_hex_ret
 
 
 .bios_print_nibble:
-cmp al, 9                 ; see if letter worthy
+cmp al, 9                 
 ja .print_hex_letter
-add al, 0x30              ;'1'
+add al, 0x30             
 int 0x10
 ret
 
 .print_hex_letter:
-add al, 0x57              ;'a'
+add al, 0x57            
 int 0x10
 ret
-- 
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