Draw clock face

dosclock.asm

@@ -4,6 +4,7 @@ bits 16
 
 midpoint_x equ 160
 midpoint_y equ 100
+
 hour_hand_len equ 50
 hour_hand_color equ 7
 minute_hand_len equ 80
@@ -11,6 +12,10 @@ minute_hand_color equ 7
 second_hand_len equ 75
 second_hand_color equ 4
 
+face_notch_len equ 8
+face_notch_distance equ 90
+face_notch_color equ 47
+
 section .code
 
 setup:
@@ -28,6 +33,44 @@ setup:
 	mov ax, 0xa000
 	mov es, ax
 
+clockface:
+	xor bx, bx
+	.loop:
+		cmp bx, 360
+		je .done
+
+		mov word [line_sx], midpoint_x
+		mov word [line_sy], midpoint_y
+		mov word [line_ex], midpoint_x
+		mov word [line_ey], midpoint_y
+
+		mov ax, face_notch_distance
+		call sinx
+		add [line_sx], ax
+
+		mov ax, face_notch_distance
+		call cosx
+		sub [line_sy], ax
+
+		mov ax, face_notch_distance + face_notch_len
+		call sinx
+		add [line_ex], ax
+
+		mov ax, face_notch_distance + face_notch_len
+		call cosx
+		sub [line_ey], ax
+
+		push bx
+		mov bl, face_notch_color
+		call draw_line
+		pop bx
+
+		add bx, 15
+
+		jmp .loop
+
+	.done:
+
 mainloop:
 	; Check keyboard
 	mov ah, 6