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Add printf facility for kernel to allow debug messages on phys. system

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This commit is contained in:
Nero 2020-12-26 16:03:15 +00:00
parent 424e174523
commit c5afc6ec61
3 changed files with 87 additions and 13 deletions
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14
boot/kernel.asm
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@ -16,13 +16,9 @@ init: cli
mov ss, ax
mov sp, ( stack+stacksize )
print_banner: mov si, banner
mov ah, 0x0e
xor bx, bx
.loop: lodsb
int 0x10
cmp al, 0x0D
jnz .loop
call printf
%defstr VERSIONSTR VERSION
db "RDOS ", VERSIONSTR, 0x0A, 0x0D, 0
push dx
call dinit
@ -50,12 +46,10 @@ hlt: hlt
%include "kernel/far.asm"
%include "kernel/fcb.asm"
%include "kernel/drive.asm"
%include "kernel/printf.asm"
section .data
%defstr VERSIONSTR VERSION
banner: db "RDOS ", VERSIONSTR, 0x0A, 0x0D
testfcb: db 0
db "HELLO ", "COM"
times 30 db 0