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285aaf8933
function description for functions that don't take any parameters. git-svn-id: svn://svn.cc65.org/cc65/trunk@5573 b7a2c559-68d2-44c3-8de9-860c34a00d81
38 lines
842 B
ArmAsm
38 lines
842 B
ArmAsm
;
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; Ullrich von Bassewitz, 2002-11-29
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;
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; unsigned char joy_unload (void);
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; /* Unload the currently loaded driver. */
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.include "joy-kernel.inc"
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.include "joy-error.inc"
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.include "modload.inc"
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.import joy_clear_ptr
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.import return0
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_joy_unload:
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lda _joy_drv
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pha ; Save pointer to driver
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ora _joy_drv+1
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beq no_driver ; No driver
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lda _joy_drv+1
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pha
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jsr _joy_uninstall ; Uninstall the driver
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pla
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tax
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pla ; Get pointer to driver
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jsr _mod_free ; Free the driver
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jmp return0 ; Return JOY_ERR_OK
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no_driver:
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tax ; X = 0
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pla ; Remove pushed junk
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lda #JOY_ERR_NO_DRIVER
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rts
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