PRG file: Difference between revisions
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PRG files are used as the 68k program (the equivalent of [[P ROM]]s on [[:Category:cartridge systems|cartridge systems]], but the content '''isn't byteswapped'''). Several games overcome the 2MiB limit by keeping a main PRG file loaded, and | PRG files are used as the {{Chipname|68k}} program (the equivalent of [[P ROM]]s on [[:Category:cartridge systems|cartridge systems]], but the content '''isn't byteswapped'''). Several games overcome the [[DRAM|2MiB]] limit by keeping a main PRG file loaded, and only swap the ones containing data like level maps, animation tables... | ||
'''[[Logo file|LOGO_*.PRG files]] are handled differently | Note that '''[[Logo file|LOGO_*.PRG files]] are handled differently'''. | ||
*Maximum file size: 1MiB (?) | * Maximum file size: 1MiB (?) | ||
*Type code: 0 | * Type code: 0 | ||
*Loadable in: | * Loadable in: 68k program DRAM ($000000~$1FFFFF) | ||
*Banks: 1 ($000000~$1FFFFF) | * Banks: 1 ($000000~$1FFFFF). Range $100000~$1FFFFF is also used for [[68k user RAM]], [[system ROM]] operations, CD buffers, ... | ||
[[Category:CD systems]] | [[Category:CD systems]] | ||
Latest revision as of 02:00, 10 February 2017
PRG files are used as the 68k program (the equivalent of P ROMs on cartridge systems, but the content isn't byteswapped). Several games overcome the 2MiB limit by keeping a main PRG file loaded, and only swap the ones containing data like level maps, animation tables...
Note that LOGO_*.PRG files are handled differently.
- Maximum file size: 1MiB (?)
- Type code: 0
- Loadable in: 68k program DRAM ($000000~$1FFFFF)
- Banks: 1 ($000000~$1FFFFF). Range $100000~$1FFFFF is also used for 68k user RAM, system ROM operations, CD buffers, ...