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lnxhdr.s .import __BANK0BLOCKSIZE__ .import __BANK1BLOCKSIZE__ .export __EXEHDRUSR__: absolute = 1 .segment "EXEHDRUSR" .byte 'L','Y','N','X' .word __BANK0BLOCKSIZE__ .word __BANK1BLOCKSIZE__ .word $X .asciiz "X" .asciiz "X" .byte $X .byte $X .byte %X .byte 0, 0, $52
LNX ROM Header Fields - 64 Byte Header
Byte 0 - 3 | Char literal | "LYNX" EEPROM byte-bits encode details of EEPROM used
4 - 5 | 16-bit uchar | Bank 0 page size bit 1 2 3 4 5 6 7 8
6 - 7 | 16-bit uchar | Bank 1 page size | | | | | |
8 - 9 | 16-bit uchar | Version number +---+---+ +---+---+ | 16/8 BIT
10 - 41 | String + \0 | Cart name | | REAL/SD
42 - 57 | String + \0 | Manufacturer EEPROM TYPE UNUSED
58 | uchar | Rotation (1=left, 2=right)
59 | uchar | AUDIN Used (1=yes) Example: 0x40 (00000010) no-EEPROM, SD card saves
60 | uchar | EEPROM detail, see right EEPROM Type values - 0: no EEPROM, 1: 93C46
61 - 63 | uchar | Unused 2: 93C56, 3: 93C66, 4: 93C76, 5: 93C86
EEPROM size is 2^(type+9)
e.g. 2^(1+9) = 1024 bits for 93C46
Lynx is little-endian so bit order is reversed.
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