Subversion Repositories ssbcc

# Copyright 2014, Sinclair R.F., Inc.
# Test bench for CTS/CTSn and RTR/RTRn signals for UART peripherals.

ARCHITECTURE    core/9x8 Verilog
INSTRUCTION     256
DATA_STACK      64
RETURN_STACK    2

PARAMETER       G_CLK_FREQ_HZ   10_000_000
PARAMETER       G_BAUD          1_000_000

PORTCOMMENT UART1 -- transmit only
PERIPHERAL      UART_Tx outport=O_UART1_TX              \
                        outstatus=I_UART1_TX_BUSY       \
                        baudmethod=G_CLK_FREQ_HZ/G_BAUD \
                        outsignal=o_uart1_tx            \
                        CTS=i_uart1_cts                 \
                        outFIFO=16

PORTCOMMENT UART2 -- bidirectional
PERIPHERAL      UART    inport=I_UART2_RX               \
                        outport=O_UART2_TX              \
                        inempty=I_UART2_RX_EMPTY        \
                        outstatus=I_UART2_TX_BUSY       \
                        baudmethod=G_CLK_FREQ_HZ/G_BAUD \
                        insignal=i_uart2_rx             \
                        outsignal=o_uart2_tx            \
                        RTR=o_uart2_rtr                 \
                        CTSn=i_uart2_ctsn               \
                        inFIFO=8                        \
                        outFIFO=8

PORTCOMMENT UART3 -- bidirectional
PERIPHERAL      UART    inport=I_UART3_RX               \
                        outport=O_UART3_TX              \
                        inempty=I_UART3_RX_EMPTY        \
                        outstatus=I_UART3_TX_BUSY       \
                        baudmethod=G_CLK_FREQ_HZ/G_BAUD \
                        insignal=i_uart3_rx             \
                        outsignal=o_uart3_tx            \
                        RTRn=o_uart3_rtrn               \
                        CTSn=i_uart3_ctsn               \
                        inFIFO=8
                        # no output FIFO!

PORTCOMMENT UART4 -- receive only
PERIPHERAL      UART_Rx inport=I_UART4_RX               \
                        inempty=I_UART4_RX_EMPTY        \
                        baudmethod=G_CLK_FREQ_HZ/G_BAUD \
                        insignal=i_uart4_rx             \
                        RTRn=o_uart4_rtrn
                        # no input FIFO!

PORTCOMMENT output data
OUTPORT 8-bit,strobe o_data,o_data_wr O_DATA

PORTCOMMENT program termination
OUTPORT 1-bit o_done O_DONE

ASSEMBLY tb_UART_CTS_RTR.s