GRAM Simulator format
The GRAM format is a headered ROM dump format from the cartridge memory chips, introduced by the TI Gebruikers Groep of Netherlands.
The contents of these files are taken from the ROMs and GROMs of the cartridge, so there must be meta-data about the origin of the data. In fact, these files are commonly 8193 bytes long, that is, 1 byte plus the fixed size of a ROM (8K).
|Bit||MF||Type||ROM Bank||GROM Bank|
- 1: There are remaining files
- 0: No more files
- 1: GROM file
- 0: ROM file
Three bits to define the bank number.
Three bits to define the 8k block in the GROM address space. A value of 3 represents the 8k memory space starting at G>6000.