Rationale for picking the X-Mass, Nova modern CPC peripherals:
* The IDE/PATA mass-storage interface has been designed in 1986. So the vintage CPC experience is preserved.
* The NVRAM in Nova is useful to handle the FAT filesystem in mass-storage without using the CPC RAM (for compatibility with old CPC software) and without the performance penalty of using the mass-storage itself as NVRAM. Also some the older RTC chips have used on CPC peripherals do not implement the century bit (Y2K hardware bug and so are useless now.)
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