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