diff options
Diffstat (limited to 'kernel.asm')
| -rw-r--r-- | kernel.asm | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/kernel.asm b/kernel.asm new file mode 100644 index 0000000..6df25d1 --- /dev/null +++ b/kernel.asm @@ -0,0 +1,83 @@ +%define JASPOS_VERSION "Jaspos Pre Build 1"
+%define STACK_SIZE 0xFFFF
+; TO DO: Document all functions with parameters, input and output
+; o Include full commenting of all instructions in functions.
+; Let's get this god damned project into line on the doc
+; side and keep it like that
+
+%include "apijmps.asm"
+
+jaspos:
+ mov ax, cs ; AX = code segment
+ mov ds, ax ; DS = AX = code segment
+ mov es, ax ; ES = AX = code segment
+ add ax, 0x1000 ; semgnet(AX) += 1
+ mov ss, ax ; SS = code segment + 1 segment
+ xor dh, dh ; Let's be sure we won't store what crud may be in DH
+ mov [Drive], dx ; Save the drive number that the bootloader passes to us
+ mov sp, STACK_SIZE ; Set stack pointer based upon predefined stack size
+ call jaspos_monitor_clear ; Clear the screen
+ call jaspos_disk_get_info ; Load the boot disk's info into memory
+ push msgLoading ; Display a loading message
+ call jaspos_monitor_dispstring ;
+ push 0x3000 ; Set the cursor pos for right hand side of screen
+ call jaspos_monitor_setcursorxy ; Set the cursor position
+ call jaspos_monitor_updatecursor
+ push msgPoolClosed ; Print the string
+ call jaspos_monitor_dispstring ;
+ call jaspos_bootbanner ; Print our nice banner showing disk number, label etc
+
+;#######################################################################
+
+ mov ah, 4
+ int 0x1A
+
+ mov [free_ram + 4], byte 0
+ push free_ram + 3
+ push cx
+ call jaspos_strutils_hex2str
+ push free_ram
+ call jaspos_monitor_dispstring
+
+ push free_ram + 3
+ push dx
+ call jaspos_strutils_hex2str
+ push free_ram
+ call jaspos_monitor_dispstring
+
+ push msgNewLine
+ call jaspos_monitor_dispstring
+
+ mov ah, 2
+ int 0x1A
+
+ push free_ram + 3
+ push cx
+ call jaspos_strutils_hex2str
+ push free_ram
+ call jaspos_monitor_dispstring
+
+ push free_ram + 3
+ mov dl, dh
+ xor dh, dh
+ push dx
+ call jaspos_strutils_hex2str
+ push free_ram + 2
+ call jaspos_monitor_dispstring
+
+;#######################################################################
+%include "panic.asm"
+%include "emergencyshell.asm"
+.halt:
+ call jaspos_keyb_getkey
+ jmp .halt ; Loop
+
+
+%include "bootbanner.asm" ; monitor.asm - printing to screen etc.
+%include "monitor.asm" ; monitor.asm - printing to screen etc.
+%include "power.asm" ; power.asm - APM functions
+%include "diskio.asm" ; diskio.asm - Functions for talking to floppy disks
+%include "keyb.asm" ; keyb.asm - getting keypresses from keyboards etc.
+%include "strutils.asm" ; strutils.asm - string length and string processing
+%include "strings.asm" ; strings.asm - not to be comfused with strutils.asm string constants in the operating system
+free_ram:
\ No newline at end of file |