use first free IOCB for "GRAPHICS 0" call instead of using a hard-coded one

[cc65] / libsrc / c64 / tgi / c64-hi.s

diff --git a/libsrc/c64/tgi/c64-hi.s b/libsrc/c64/tgi/c64-hi.s
index 1e829d274945b7802d0561b6a7015cc2922967e4..d9119664988ce4023d8cfb0dbba3dde1ee91b1ce 100644 (file)
--- a/libsrc/c64/tgi/c64-hi.s
+++ b/libsrc/c64/tgi/c64-hi.s
@@ -23,6 +23,7 @@
 
         .byte   $74, $67, $69           ; "tgi"
         .byte   TGI_API_VERSION         ; TGI API version number
+        .addr   $0000                   ; Library reference
         .word   320                     ; X resolution
         .word   200                     ; Y resolution
         .byte   2                       ; Number of drawing colors