Preliminary Atari 2600 support

include/vcs.ini

@@ -0,0 +1,29 @@
+; an Atari VCS cartridge format without any bankswitching
+; output file size: 4096 bytes
+
+[compilation]
+arch=nmos
+modules=vcs_hardware,default_panic
+ro_arrays=true
+; use -fzp-register to override this:
+zeropage_register=false
+
+
+[allocation]
+zp_pointers=$80,$82,$84,$86,$88,$8a,$8c,$8e,$90,$92,$94,$96,$98,$9a,$9c,$9e,$a0,$a2,$a4
+segments=default,prgrom
+default_code_segment=prgrom
+
+; last 16 bytes are left for stack
+segment_default_start=$80
+segment_default_end=$ef
+
+segment_prgrom_start=$f000
+segment_prgrom_end=$ffff
+
+[output]
+style=single
+format=prgrom:$f000:$ffff
+extension=bin
+
+