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cc65/libsrc/cbm510/kopen.s
cuz dada43f570 More cbm510 changes to make file I/O and kernal access work
git-svn-id: svn://svn.cc65.org/cc65/trunk@2846 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-27 16:11:14 +00:00

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ArmAsm

;
; Ullrich von Bassewitz, 2003-12-20
;
; OPEN kernal call.
;
; NOTE: The OPEN system call in the CBM610 kernal is different from the
; standard. It evaluates the carry flag and does a normal open if carry clear
; and some strange things (output sa 15 + name on IEC) if carry set. To be
; compatible with our CBM file stuff, we have to clear the carry before
; calling the real OPEN.
.export OPEN
.proc OPEN
clc
jmp $FFC0
.endproc