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cc65/libsrc/tgi/tgi_geterror.s
cuz 8ecdf9d6b7 Renamed ..._deinstall -> ..._uninstall.
Rename tgi_setup to tgi_install.
Make tgi_install and tgi_deinstall user callable.
More cosmetic changes.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1966 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-02-11 12:37:46 +00:00

26 lines
799 B
ArmAsm

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