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-# caravel
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+# CIIC Harness (Phase 1)
+
+A template SoC for Google SKY130 free shuttles. It is still WIP. The current SoC architecture is given below.
+
+<p align=”center”>
+<img src="/doc/ciic_harness.png" width="70%" height="70%"> 
+</p>
+
+## Managment SoC
+The managment SoC runs firmware taht can be used to:
+- Configure Mega Project I/O pads
+- Observe and control Mega Project signals (through on-chip logic analyzer probes)
+- Control the Mega Project power supply
+
+The memory map of the management SoC is given below <br>
+<img src="/doc/mgmt_soc_memory_map.png" width="40%" height="40%">
+
+## Mega Project Area
+This is the user space. It has limitted silicon area (???) as well as a fixed number of I/O pads (???).
+The repoo contains a [sample mega project](/verilog/rtl/mprj_counter.v) that contains a binary 32-bit up counter.  </br>
+
+<p align=”center”>
+<img src="/doc/counter_32.png" width="40%" height="40%">
+</p>
+
+The firmware running on the Management Area SoC, configures the I/O pads used by the counter and uses the logic probes to observe/control the counter. Three firmware examples are provided:
+1. Configure the Mega Project I/O pads as o/p. Observe the counter value in the testbench: [IO_Ports Test](verilog/dv/harness/mprj_counter/io_ports).
+2. Configure the Mega Project I/O pads as o/p. Use the Chip LA to load the counter and observe the o/p till it reaches 500: [LA_Test1](verilog/dv/harness/mprj_counter/la_test1).
+3. Configure the Mega Project I/O pads as o/p. Use the Chip LA to control the clock source and reset signals and observe the counter value for five clock cylcles:  [LA_Test2](verilog/dv/harness/mprj_counter/la_test2).