X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=megatris;a=blobdiff_plain;f=src%2Fromhdr.S;fp=src%2Fromhdr.S;h=9064dd21a6e3eec89a3c98c668c68cd2589f6458;hp=0000000000000000000000000000000000000000;hb=e6d60ea244d178d6c50313d221cb1a476b1c9361;hpb=e2e548eafdddeecb65fe8c15dbbd082bf125298d

diff --git a/src/romhdr.S b/src/romhdr.S
new file mode 100644
index 0000000..9064dd2
--- /dev/null
+++ b/src/romhdr.S
@@ -0,0 +1,37 @@
+| the following will go into the custom .romhdr section which will be placed at
+| address 100h of the binary by the linker (see lnkscript).
+	.section .romhdr,"a"
+
+#ifndef GAMENAME
+#define GAMENAME "unnamed"
+#endif
+#ifndef VERSTR
+#define VERSTR "00"
+#endif
+
+	.ascii "SEGA MEGA DRIVE (C)MINDLAPSE2017"
+hdr_game_dom:
+	.ascii GAMENAME
+hdr_game_dom_end:
+	.fill 48 - (hdr_game_dom_end - hdr_game_dom),1,32 | pad to 48 bytes with spaces
+hdr_game_int:
+	.ascii GAMENAME
+hdr_game_int_end:
+	.fill 48 - (hdr_game_int_end - hdr_game_int),1,32 | pad to 48 bytes with spaces
+	.ascii "GM"		| it's a game (who cares what it is?)
+	.ascii "0000000-"	| product code
+	.ascii VERSTR		| version string
+	.short 0		| checksum
+	.ascii "J               " | I/O support (joypad)
+	.long 0			| start address of ROM
+	.long _rom_end		| last address of ROM
+	.long 0xff0000		| start address of RAM
+	.long 0xffffff		| last address of RAM
+	.long 0			| SRAM enabled(?)
+	.long 0			| ???
+	.long 0			| start address of SRAM
+	.long 0			| last address of SRAM
+	.long 0			| ???
+	.long 0			| ???
+	.fill 40,1,32		| notes (fill with spaces for now TODO)
+	.ascii "JUE             " | country codes