Add Mac-style disk icon to Fox32ROM

icon.asm

@@ -0,0 +1,75 @@
+; status icon routines
+; created by TalonFox for Ry :3
+
+; note to self: icon overlay is overlay 28 (0x1c)
+
+; changes the 32x32 pixel icon to the given icon pointed at the given address
+; inputs:
+; r0: Pointer to icon data
+; outputs:
+; none
+change_icon:
+    push r0
+    push r1
+    push r31
+
+    ; write the cursor bitmap to the overlay framebuffer
+    movz.32 r1, r0
+    mov r0, ICON_FRAMEBUFFER_PTR
+    mov r31, 1024 ; 32x32
+change_icon_loop:
+    mov [r0], [r1]
+    add r0, 4
+    add r1, 4
+    loop change_icon_loop
+    pop r31
+    pop r1
+    pop r0
+    ret
+
+setup_icon:
+    push r0
+    push r1
+    movz r0, 0x8000001c
+    movz r1, ICON_POSITION_Y
+    sla r1, 16
+    or r1, ICON_POSITION_X
+    out r0, r1
+    add r0, 0x100
+    movz r1, ICON_HEIGHT
+    sla r1, 16
+    or r1, ICON_WIDTH
+    out r0, r1
+    add r0, 0x100
+    movz r1, ICON_FRAMEBUFFER_PTR
+    out r0, r1
+    add r0, 0x100
+    movz r1, 1
+    out r0, r1
+    pop r1
+    pop r0
+    ret
+
+const ICON_TICK: 0x03FFFFFC
+
+icon_update:
+    push r0
+    mov.32 r0, [ICON_TICK]
+    add r0, 1
+    rem r0, 60
+    mov.32 [ICON_TICK], r0
+    cmp r0, 0
+    ifz jmp icon_update1
+    cmp r0, 30
+    ifz jmp icon_update2
+    jmp icon_update_ret
+icon_update1:
+    movz r0, disk_icon_q
+    call change_icon
+    jmp icon_update_ret
+icon_update2:
+    movz r0, disk_icon
+    call change_icon
+icon_update_ret:
+    pop r0
+    ret

main.asm

@@ -121,36 +121,42 @@ draw_bottom_bar_loop:
     call draw_format_str_to_background
 
     ; draw the box in the middle of the screen
-    mov r0, 242
-    mov r1, 203
-    mov r2, 156
-    mov r3, 60
-    mov r4, 0xFFFFFFFF
-    call draw_filled_rectangle_to_background
-    mov r0, 243
-    mov r1, 204
-    mov r2, 154
-    mov r3, 58
-    mov r4, 0xFF000000
-    call draw_filled_rectangle_to_background
-    mov r0, 244
-    mov r1, 205
-    mov r2, 152
-    mov r3, 56
-    mov r4, 0xFFFFFFFF
-    call draw_filled_rectangle_to_background
+    ;mov r0, 242
+    ;mov r1, 203
+    ;mov r2, 156
+    ;mov r3, 60
+    ;mov r4, 0xFFFFFFFF
+    ;call draw_filled_rectangle_to_background
+    ;mov r0, 243
+    ;mov r1, 204
+    ;mov r2, 154
+    ;mov r3, 58
+    ;mov r4, 0xFF000000
+    ;call draw_filled_rectangle_to_background
+    ;mov r0, 244
+    ;mov r1, 205
+    ;mov r2, 152
+    ;mov r3, 56
+    ;mov r4, 0xFFFFFFFF
+    ;call draw_filled_rectangle_to_background
 
     ; draw the text inside the box
-    mov r0, startup_str_0
-    mov r1, 256
-    mov r2, 216
-    mov r3, 0xFF000000
-    mov r4, 0x00000000
-    call draw_str_to_background
-    mov r0, startup_str_1
-    mov r1, 256
-    mov r2, 232
-    call draw_str_to_background
+    ; mov r0, startup_str_0
+    ; mov r1, 256
+    ; mov r2, 216
+    ; mov r3, 0xFF000000
+    ; mov r4, 0x00000000
+    ; call draw_str_to_background
+    ; mov r0, startup_str_1
+    ;  mov r1, 256
+    ; mov r2, 232
+    ; call draw_str_to_background
+
+    mov r0, disk_icon_q
+    call change_icon
+    call setup_icon
+
+    mov r0, bottom_bar_patterns
 
 event_loop:
     call get_next_event
@@ -198,6 +204,7 @@ poweroff_wait:
     #include "draw_tile.asm"
     #include "event.asm"
     #include "exception.asm"
+    #include "icon.asm"
     #include "integer.asm"
     #include "keyboard.asm"
     #include "memory.asm"
@@ -341,6 +348,18 @@ standard_font_data:
 mouse_cursor:
     #include_bin "font/cursor2.raw"
 
+disk_icon:
+    #include_bin "font/disk1.raw"
+disk_icon_q:
+    #include_bin "font/disk2.raw"
+
+; icon overlay struct:
+const ICON_WIDTH:           32
+const ICON_HEIGHT:          32
+const ICON_POSITION_X:      304
+const ICON_POSITION_Y:      224
+const ICON_FRAMEBUFFER_PTR: 0x0212C000
+
 ; cursor overlay struct:
 const CURSOR_WIDTH:           8
 const CURSOR_HEIGHT:          12
@@ -353,6 +372,13 @@ const MENU_BAR_POSITION_X:      0
 const MENU_BAR_POSITION_Y:      0
 const MENU_BAR_FRAMEBUFFER_PTR: 0x0214C180
 
+; menu bar overlay struct:
+const MENU_BAR_WIDTH:           640
+const MENU_BAR_HEIGHT:          16
+const MENU_BAR_POSITION_X:      0
+const MENU_BAR_POSITION_Y:      0
+const MENU_BAR_FRAMEBUFFER_PTR: 0x0214D180
+
 ; menu overlay struct:
 ; this struct must be writable, so these are hard-coded addresses in ram
 const MENU_WIDTH:           0x02156180 ; 2 bytes
@@ -362,8 +388,8 @@ const MENU_POSITION_Y:      0x02156186 ; 2 bytes
 const MENU_FRAMEBUFFER_PTR: 0x0215618A ; 4 bytes
 const MENU_FRAMEBUFFER:     0x0215618E ; max 640x480x4 = end address at 0x0228218E
 
-startup_str_0: data.strz "Welcome to fox32"
-startup_str_1: data.strz "Insert boot disk"
+; startup_str_0: data.strz "Welcome to fox32"
+; startup_str_1: data.strz "Insert boot disk"
 
 bottom_bar_str_0: data.strz "FOX"
 bottom_bar_str_1: data.strz "32"

vsync.asm

@@ -13,6 +13,7 @@ system_vsync_handler:
 
     call mouse_update
     call keyboard_update
+    call icon_update
 
     pop r7
     pop r6