Added emulation and more clipping for the BAR function.

Copy colors and page count into local storage from the driver.
Added more functions.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1322 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/tgi/tgi_setdrawpage.s

@@ -0,0 +1,18 @@
+;
+; Ullrich von Bassewitz, 22.06.2002
+;
+; void __fastcall__ tgi_setdrawpage (unsigned char page);
+; /* Set the drawable page */
+
+
+        .include        "tgi-kernel.inc"
+        .export         _tgi_setdrawpage
+
+_tgi_setdrawpage:
+        cmp     _tgi_pagecount  ; Compare to available pages
+        bcs     @L1
+        jmp     tgi_setdrawpage ; Call the driver
+@L1:    jmp     tgi_inv_arg     ; Invalid argument
+
+
+