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25 lines
820 B
ArmAsm
25 lines
820 B
ArmAsm
;
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; Ullrich von Bassewitz, 21.06.2002
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;
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; unsigned char __fastcall__ tgi_geterror (void);
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; /* Return the error code for the last operation. This will also clear the
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; * error.
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; */
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.include "tgi-kernel.inc"
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.export _tgi_geterror
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_tgi_geterror:
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lda _tgi_drv ; Check if we have a driver
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ora _tgi_drv+1
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beq @L1
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jsr tgi_geterror ; First call driver
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@L1: ldx #$00 ; Clear high byte
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ldy _tgi_error ; Test high level error code
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beq @L2 ; Branch if no high level error code
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tya ; Use high level code if we have one
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stx _tgi_error ; Clear high level error code
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@L2: rts
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