diff --git a/amaranth_boards/digilent_spartan3e.py b/amaranth_boards/digilent_spartan3e.py
new file mode 100644
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+++ b/amaranth_boards/digilent_spartan3e.py
@@ -0,0 +1,223 @@
+import os
+import subprocess
+import textwrap
+
+from amaranth.build import *
+from amaranth.vendor.xilinx import XilinxPlatform
+from .resources import *
+
+__all__ = ["DigilentSpartan3ePlatform"]
+
+class DigilentSpartan3ePlatform(XilinxPlatform):
+ """Platform file for Digilent Spartan 3E board.
+ Product URL: https://digilent.com/reference/programmable-logic/spartan-3e/start
+ User Guide: https://digilent.com/reference/_media/reference/programmable-logic/spartan-3e/s3estarter_ug.pdf"""
+
+ device = "xc3s500e"
+ package = "fg320"
+ speed = "4"
+
+ default_clk = "clk50"
+
+ resources = [
+
+ # ==== Clock inputs (CLK) ==== (Pg. 21 in User Guide)
+ Resource("clk50", 0, Pins("C9" , dir="i"), Attrs(IOSTANDARD="LVCMOS33"), Clock(50e6)),
+ Resource("clk_aux", 0, Pins("B8" , dir="i"), Attrs(IOSTANDARD="LVCMOS33")),
+ Resource("clk_sma", 0, Pins("A10", dir="i"), Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== Pushbuttons (BTN) ==== (Pg. 16,17 in User Guide)
+ *ButtonResources(pins="H13 V4 K17 D18 V16",
+ attrs=Attrs(IOSTANDARD="LVTTL", PULLDOWN=True)),
+
+ # ==== Discrete LEDs (LED) ==== (Pg. 19 in User Guide)
+ *LEDResources(pins="F12 E12 E11 F11 C11 D11 E9 F9",
+ attrs=Attrs(IOSTANDARD="LVTTL", SLEW="SLOW", DRIVE="8")),
+
+ # ==== Slide Switches (SW) ==== (Pg. 15 in User Guide)
+ *SwitchResources(pins="L13 L14 H18 N17",
+ attrs=Attrs(IOSTANDARD="LVTTL", PULLUP=True)),
+
+ # ==== PS/2 Mouse/Keyboard Port (PS2) ==== (Pg. 62 in User Guide)
+ PS2Resource(0,
+ clk="G14",
+ dat="G13",
+ attrs=Attrs(IOSTANDARD="LVCMOS33", DRIVE="8", SLEW="SLOW")),
+
+ # ==== RS-232 Serial Ports (RS232) ==== (Pg. 59 in User Guide)
+ UARTResource(0,
+ rx="R7",
+ tx="M14",
+ attrs=Attrs(IOSTANDARD="LVTTL")),
+
+ UARTResource(1,
+ rx="U8",
+ tx="M13",
+ attrs=Attrs(IOSTANDARD="LVTTL")),
+
+ # ==== Analog-to-Digital Converter (ADC) ==== (Pg. 74 in User Guide)
+ SPIResource("adc", 0,
+ role="peripheral",
+ cs_n="P11", #AD_CONV
+ clk="U16", #SPI_SCK
+ copi=None,
+ cipo="N10", #SPI_MISO
+ attrs=Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== Programmable Gain Amplifier (AMP) ==== (Pg. 74 in User Guide)
+ SPIResource("amp", 0,
+ role="peripheral",
+ cs_n="N7", #AMP_CS
+ clk="U16", #SPI_SCK
+ copi="T4", #SPI_MOSI
+ cipo="E18", #AMP_DOUT
+ reset="P7", #AMP_SHDN
+ attrs=Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== Digital-to-Analog Converter (DAC) ==== (Pg. 67 in User Guide)
+ SPIResource("dac", 0,
+ role="peripheral",
+ cs_n="N8", #DAC_CS
+ clk="U16", #SPI_SCK
+ copi="T4", #SPI_MOSI
+ cipo="N10", #SPI_MISO
+ reset="P8", #DAC_CLR
+ attrs=Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== STMicro SPI serial Flash (SPI) ==== (Pg. 89 in User Guide)
+ SPIResource("spi_flash", 0,
+ role="peripheral",
+ cs_n="U3", #SPI_SS_B
+ clk="U16", #SPI_SCK
+ copi="T4", #SPI_MOSI
+ cipo="N10", #SPI_MISO
+ attrs=Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== VGA Port (VGA) ==== (Pg. 54 in User Guide)
+ VGAResource(0,
+ r="H14",
+ g="H15",
+ b="G15",
+ vs="F14",
+ hs="F15",
+ attrs=Attrs(IOSTANDARD="LVTTL", DRIVE="8", SLEW="FAST")),
+
+ # ==== 1-Wire Secure EEPROM (DS) ==== (Pg. 127 in User Guide)
+ Resource("ds_wire", 0, Pins("U4"), Attrs(IOSTANDARD="LVTTL", SLEW="SLOW", DRIVE="8")),
+
+ # ==== Ethernet PHY (E) ==== (Pg. 110 in User Guide)
+ Resource("ethernet", 0,
+ Subsignal("col", Pins("U6")),
+ Subsignal("crs", Pins("U13")),
+ Subsignal("mdc", Pins("P9"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("mdio", Pins("U5"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("rx_clk", Pins("V3")),
+ Subsignal("rx_dv", Pins("V2")),
+ Subsignal("rxd", Pins("V8 T11 U11 V14 U14")),
+ Subsignal("tx_clk", Pins("T7")),
+ Subsignal("tx_en", Pins("P15"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("txd", Pins("R11 T15 R5 T5 R6"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== FPGA Configuration Mode, INIT_B Pins (FPGA) ==== (Pg. 26 in User Guide)
+ Resource("fpga", 0,
+ Subsignal("m0", Pins("M10"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("m1", Pins("V11"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("m2", Pins("T10"), Attrs(SLEW="SLOW", DRIVE="8")),
+ Subsignal("init_b", Pins("T3"), Attrs(SLEW="SLOW", DRIVE="4")),
+ Subsignal("rdwr_b", Pins("U10"), Attrs(SLEW="SLOW", DRIVE="4")),
+ Subsignal("hswap", Pins("B3")),
+ Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== Character LCD (LCD) ==== (Pg. 41 in User Guide)
+ Resource("lcd", 0,
+ Subsignal("e", Pins("M18", dir='o')),
+ Subsignal("rs", Pins("L18", dir='o')),
+ Subsignal("rw", Pins("L17", dir='o')),
+ Subsignal("d", Pins("R15 R16 P17 M15", dir='o')),
+ Attrs(IOSTANDARD="LVCMOS33", DRIVE="4", SLEW="SLOW")),
+
+ # ==== Rotary Pushbutton Switch (ROT) ==== (Pg. 17 in User Guide)
+ Resource("rotary_encoder", 0,
+ Subsignal("a", Pins("K18", dir="i")),
+ Subsignal("b", Pins("G18", dir="i")),
+ Attrs(IOSTANDARD="LVTTL", PULLUP=True)),
+
+ # ==== DDR SDRAM (SD) ==== (I/O Bank 3, VCCO=2.5V) (Pg. 104 in User Guide)
+ Resource("ddr", 0,
+ Subsignal("a", Pins("T1 R3 R2 P1 F4 H4 H3 H1 H2 N4 T2 N5 P2")),
+ Subsignal("ba", Pins("K5 K6")),
+ Subsignal("cas", Pins("C2")),
+ Subsignal("clk", DiffPairs("J4", "J5")),
+ Subsignal("clk_en", Pins("K3")),
+ Subsignal("cs", Pins("K4")),
+ Subsignal("dq", Pins("L2 L1 L3 L4 M3 M4 M5 M6 E2 E1 F1 F2 G6 G5 H6 H5")),
+ Subsignal("ldm", Pins("J2")),
+ Subsignal("ldqs", Pins("L6")),
+ Subsignal("ras", Pins("C1")),
+ Subsignal("udm", Pins("J1")),
+ Subsignal("udqs", Pins("G3")),
+ Subsignal("we", Pins("D1")),
+ Subsignal("ck_fb", Pins("B9"), Attrs(IOSTANDARD="LVCMOS33")),
+ Attrs(IOSTANDARD="SSTL2_I")),
+
+ # ==== Intel StrataFlash Parallel NOR Flash (SF) ==== (Pg. 82 in User Guide)
+ Resource("strataflash", 0,
+ Subsignal("a", Pins("H17 J13 J12 J14 J15 J16 J17 K14 K15 K12 K13 L15 L16 T18 R18 T17 U18 T16 U15 V15 T12 V13 V12 N11 A11"),
+ Attrs(DRIVE="4", SLEW="SLOW")),
+ Subsignal("byte", Pins("C17"), Attrs(DRIVE="4", SLEW="SLOW")),
+ Subsignal("ce0", Pins("D16"), Attrs(DRIVE="4", SLEW="SLOW")),
+ Subsignal("d", Pins("P10 R10 V9 U9 R9 M9 N9 R15 R16 P17 M15 M16 P6 R8 T8"),
+ Attrs(DRIVE="4", SLEW="SLOW")),
+ Subsignal("oe", Pins("C18"), Attrs(DRIVE="4", SLEW="SLOW")),
+ Subsignal("sts", Pins("B18")),
+ Subsignal("we", Pins("D17"), Attrs(DRIVE="4", SLEW="SLOW")),
+ Attrs(IOSTANDARD="LVCMOS33")),
+
+ # ==== Xilinx CPLD (XC) ==== (Pg. 127 in User Guide)
+ Resource("cpld", 0,
+ Subsignal("cmd", Pins("P18 N18"), Attrs(IOSTANDARD="LVTTL", DRIVE="4", SLEW="SLOW")),
+ Subsignal("cpld_en", Pins("B10"), Attrs(IOSTANDARD="LVTTL")),
+ Subsignal("d", Pins("G16 F18 F17"), Attrs(IOSTANDARD="LVTTL", DRIVE="4", SLEW="SLOW")),
+ Subsignal("trig", Pins("R17"), Attrs(IOSTANDARD="LVCMOS33")),
+ Subsignal("gck0", Pins("H16"), Attrs(IOSTANDARD="LVCMOS33", DRIVE="4", SLEW="SLOW")),
+ Subsignal("gclk10", Pins("C9"), Attrs(IOSTANDARD="LVCMOS33", DRIVE="4", SLEW="SLOW"))),
+ ]
+
+ connectors = [
+ # ==== 6-pin header J1 ==== (Pg. 121 in User Guide)
+ Connector("j", 1,
+ "B4 A4 D5 C5 - -"),
+
+ # ==== 6-pin header J2 ==== (Pg. 121 in User Guide)
+ Connector("j", 2,
+ "A6 B6 E7 F7 - -"),
+
+ # ==== FX2 Connector (FX2) ==== (Pg. 113 in User Guide)
+ Connector("j", 3,
+ "- - - - - B4 A4 D5 C5 A6 B6 E7 F7 D7 C7 F8 E8 F9 E9 D11 C11 F11 E11 E12 F12"
+ "A13 B13 A14 B14 C14 D14 A16 B16 E13 C4 B11 A11 A8 G9 D12 C12 A15 B15 C3 C15 - D10 - - - "
+ "- - - - - - - - - - - - - - - - - - - - - - - - - "
+ "- - - - - - - - - - - - - - - - - - - - E10 - D9 - - "),
+
+ # ==== 6-pin header J4 ==== (Pg. 121 in User Guide)
+ Connector("j", 4,
+ "D7 C7 F8 E8 - -"),
+ ]
+
+ def toolchain_program(self, products, name):
+ with products.extract("{}.bit".format(name)) as bitfile:
+ cmd = textwrap.dedent("""
+ setMode -bs
+ setCable -port auto
+ Identify -inferir
+ IdentifyMPM
+ assignFile -p 1 -file "{}"
+ Program -p 1
+ quit
+ """).format(bitfile).encode('utf-8')
+ subprocess.run(["impact", "-batch"], input=cmd, check=True)
+
+if __name__ == "__main__":
+ from .test.blinky import *
+ DigilentSpartan3ePlatform().build(Blinky(), do_program=True)
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