PRG file: Difference between revisions

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*Type code: 0
*Type code: 0
*Loadable in: [[68k]] program [[DRAM]] ($000000~$1FFFFF)
*Loadable in: [[68k]] program [[DRAM]] ($000000~$1FFFFF)
*Banks: 1 ($000000~$1FFFFF). Range $100000~$12ffff is reserved (WorkRAM, CD buffer etc).  
*Banks: 1 ($000000~$1FFFFF). Range $100000~$12FFFF is reserved (WorkRAM, CD buffer etc).  


[[Category:CD systems]]
[[Category:CD systems]]

Revision as of 16:46, 3 November 2012

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 swaping the ones containing arrays like level maps, animation tables...

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~$12FFFF is reserved (WorkRAM, CD buffer etc).