*CPCEMU uses a simple system to emulate the screen display. It allows the mode to be changed in each of the 6 interrupts that occur during a single 50Hz/60Hz period. These bytes represent the mode in each of these sections, i.e. the screen modes (0,1 or 2) for the interrupts 0..5. More accurate emulators support changing of the screen mode at any point supported by the Amstrad hardware, these emulators should write "0" for all these bytes.
2. A version 2 snapshot can describe up to 512KB of describes Dk'Tronics /Dobbertin compatible RAM in addition to the 64KB base ram. This is a type of RAM expansion which uses the same port and paging mechanism as the extra 64KB inside the 6128. However, the RAM *MUST* be continuous, therefore it's limited to 64KB, 256KB or 512KB additional RAM. The Dk'Tronics silicon disk can't be described on it's own because it's RAM configurations do not start at C4.
The following configurations can be described:
* 64KB base + 256KB extra RAM (e.g. Dk'Tronics 256KB RAM Expansion)
* 64KB base + 512KB extra RAM (e.g. Dk'Tronics 256KB RAM Expansion & Dk'Tronics 256KB Silicon Disk OR X-MEM OR Symbiface 2 OR other device which provides 512KB)
JavaCPC uses this value to store up to 4MB of RAM. (e.g. [[CPC4MB]]). This type of ram is Dk'Tronics compatible and has multiple banks of 512KB. This value could be used to describe a 1MB or 2MB expansion as long as it is fully Dk'tronics compatible (e.g. rpalmer's 2MB).
3. JavaCPC uses e0-ff to store an emulator ID (see snapshot V3 for more details)