per-line scrolling test
[mdlife] / src / romhdr.S
1 | the following will go into the custom .romhdr section which will be placed at
2 | address 100h of the binary by the linker (see megadrive.ld).
3         .section .romhdr,"a"
4
5 #ifndef GAMENAME
6 #define GAMENAME "life"
7 #endif
8 #ifndef VERSTR
9 #define VERSTR "01"
10 #endif
11
12         .ascii "SEGA MEGA DRIVE (C)MINDLAPSE2022"
13 hdr_game_dom:
14         .ascii GAMENAME
15 hdr_game_dom_end:
16         .fill 48 - (hdr_game_dom_end - hdr_game_dom),1,32 | pad to 48 bytes with spaces
17 hdr_game_int:
18         .ascii GAMENAME
19 hdr_game_int_end:
20         .fill 48 - (hdr_game_int_end - hdr_game_int),1,32 | pad to 48 bytes with spaces
21         .ascii "GM"             | it's a game (who cares what it is?)
22         .ascii "0000000-"       | product code
23         .ascii VERSTR           | version string
24         .short 0                | checksum
25         .ascii "J               " | I/O support (joypad)
26         .long 0                 | start address of ROM
27         .long _rom_end          | last address of ROM
28         .long 0xff0000          | start address of RAM
29         .long 0xffffff          | last address of RAM
30         .long 0                 | SRAM enabled(?)
31         .long 0                 | ???
32         .long 0                 | start address of SRAM
33         .long 0                 | last address of SRAM
34         .long 0                 | ???
35         .long 0                 | ???
36         .fill 40,1,32           | notes (fill with spaces for now TODO)
37         .ascii "JUE             " | country codes