diff options
Diffstat (limited to 'boot/old.asm')
| -rw-r--r-- | boot/old.asm | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/boot/old.asm b/boot/old.asm new file mode 100644 index 0000000..a7a1b24 --- /dev/null +++ b/boot/old.asm @@ -0,0 +1,56 @@ + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;read data from disk +;mov bx,0x9000 ;destination(es:bx) +;mov dh,1 ;number of sectors +;mov dl,[BOOT_DRIVE] ;source disk +;call disk_load + +;print data loaded form disk +;mov dx,[0x9000] +;call print_hex + +;mov dx,[0x9000+256] +;call print_hex + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;;;; COM1 infinite loop ;;;;; +; +; COM1_PORT equ 0xD000 +; mov dx,COM1_PORT +; mov ecx,160*2 +; +; ; loop and write all data other than 0x0 +; com1_loop: +; +; in ax,dx ; read port val +; +; cmp ax,0xffff +; je com1_skip +; +; cmp ax,0x0 +; je com1_skip +; +; call print_hex_pm +; add ecx,14 +; pusha +; mov dx,ax +; call print_hex_pm +; popa +; add ecx,26 +; +; com1_skip: +; +; inc dx +; ;call print_hex_pm +; cmp dx,COM1_PORT+0x300 +; jne com1_loop +; mov dx,COM1_PORT +; mov ecx,160*2 +; jmp com1_loop +; + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + |