comments on how to update firmware

iocBoot/iocvxWorks/st_SIS3820.iocsh

@@ -18,6 +18,14 @@ epicsEnvSet("MODEL",                    "SIS3820")
 #                  fifoBufferWords)
 drvSIS3820Config($(PORT), 0xA8000000, 224, 6, $(MAX_CHANS), $(MAX_SIGNALS), 1, 0x2000)
 
+# Update SIS3820 firmware:
+# connect pins 2 and 3 on jumper J570
+#sis3820_jtag_prom_epics(0xA8000000, "R", "")
+# copy prom_v0111.mcs from $(MCA)/mcaApp/SISSrc
+#sis3820_jtag_prom_epics(0xA8000000, "P", "prom_v0111.mcs")
+#sis3820_jtag_prom_epics(0xA8000000, "V", "prom_v0111.mcs")
+# connect pins 1 and 2 on jumper J570
+
 # This loads the scaler record and supporting records
 dbLoadRecords("$(STD)/stdApp/Db/scaler32.db", "P=$(PREFIX), S=scaler1, DTYP=Asyn Scaler, OUT=@asyn($(PORT)), FREQ=50000000")