+In examining the slow\_peripherals.bsv file, there should at this stage
+be no sign of an SDRAM peripheral having been added, at all. This is
+because it is missing from the peripheral\_gen side of the tool.
+
+However, as the slow\_peripherals module takes care of the IO cells
+(because it contains a declared and configured instance of the pinmux
+package), signals from the pinmux PeripheralSideSDR instance need
+to be passed *through* the slow peripherals module as an external
+interface. This will happen automatically once a code-generator class
+is added.
+
+So first, we must identify the nearest similar class. FlexBus looks
+like a good candidate, so we take a copy of src/bsv/peripheral\_gen/flexbus.py
+called sdram.py. The simplest next step is to global/search/replace
+"flexbus" with "sdram".