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baa582ac0b
The fastcall argument doesn't need to be put on a stack. SETNAM can be called before SETLFS.
37 lines
1011 B
ArmAsm
37 lines
1011 B
ArmAsm
;
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; 2002-06-22, Ullrich von Bassewitz
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; 2021-12-23, Greg King
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;
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; Original C code by Marc 'BlackJack' Rintsch, 18.03.2001
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;
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; unsigned char __fastcall__ cbm_open (unsigned char lfn,
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; unsigned char device,
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; unsigned char sec_addr,
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; const char* name);
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; /* Opens a file. Works just like the BASIC command.
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; ** Returns 0 if opening was successful, otherwise an errorcode (see table
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; ** below).
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; */
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; {
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; cbm_k_setlfs(lfn, device, sec_addr);
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; cbm_k_setnam(name);
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; return _oserror = cbm_k_open();
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; }
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;
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.export _cbm_open
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.import popa
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.import _cbm_k_setlfs, _cbm_k_setnam, _cbm_k_open
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.import __oserror
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_cbm_open:
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jsr _cbm_k_setnam
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jsr popa ; Get sec_addr
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jsr _cbm_k_setlfs ; Call SETLFS, pop all args
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jsr _cbm_k_open
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sta __oserror
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rts
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