Add synchronous RAM macros to support runtime-updatable functions #10
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…r than being dependent on the setting of FLOAT_REAL. this matches better with the fact that the RAM always stores integers
gabrielrutsch
approved these changes
Jul 30, 2020
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This PR adds the macros
SYNC_RAM_REAL/SYNC_RAM_INTO_REAL. They are analogous to existing macrosSYNC_ROM_REAL/SYNC_ROM_INTO_REAL, except that the lookup table contents are defined at runtime rather than at compile time. This feature is used in theupdate_brambranch of msdsl to implement runtime-updatable functions; that is, functions whose behavior can be defined while the emulator is running, as opposed to requiring a rebuild of the bitstream. The new feature is exercised in CI tests viatests/test_sync_ram.py.