Xilinx Spartan 3E-500 Starter Kit

	FPGA	MIPS bitstream	RISCV bitstream
	Xilinx Spartan 3E XC3S500E	s3e_500_mips_70mhz.bit	s3e_500_riscv_70mhz.bit

User manual: http://www.digilentinc.com/Data/Products/S3EBOARD/S3EStarter_ug230.pdf
ISE project directory: https://github.com/f32c/f32c/tree/master/rtl/proj/xilinx/s3e_500_bram
Top-level module: https://github.com/f32c/f32c/blob/master/rtl/xilinx/s3_toplevel_bram.vhd

Xilinx Spartan 3E-1600 Development Board

	FPGA	MIPS bitstream	RISCV bitstream
	Xilinx Spartan 3E XC3S1600E	s3e_1600_mips_70mhz.bit	s3e_1600_riscv_70mhz.bit

User manual: http://www.digilentinc.com/Data/Products/S3E1600/ug257.pdf
ISE project directory: https://github.com/f32c/f32c/tree/master/rtl/proj/xilinx/s3e_1600_bram
Top-level module: https://github.com/f32c/f32c/blob/master/rtl/xilinx/s3_toplevel_bram.vhd

Xilinx Spartan 3A / 3AN Starter Kit

	FPGA	MIPS bitstreams	RISCV bitstreams
	Xilinx Spartan 3E XC3S700A XC3S700AN	s3a_700_mips_70mhz.bit s3an_700_mips_70mhz.bit	s3a_700_riscv_70mhz.bit s3an_700_riscv_70mhz.bit

User manual: http://www.xilinx.com/support/documentation/boards_and_kits/ug334.pdf
ISE project directory: https://github.com/f32c/f32c/tree/master/rtl/proj/xilinx/s3a_700_bram
Top-level module: https://github.com/f32c/f32c/blob/master/rtl/xilinx/s3_toplevel_bram.vhd

I/O pin enumeration

Arduino	0	1	2	3	4	5	6	7
Spartan	btn_east	btn_west	btn_south	btn_north	rot_center	rot_b	rot_a
Arduino	8	9	10	11	12	13	14	15
Spartan	LED #0	LED #1	LED #2	LED #3	LED #4	LED #5	LED #6	LED #7
Arduino	16	17	18	19	20	21	22	23
Spartan	switch #0	switch #1	switch #2	switch #3
Arduino	24	25	26	27	28	29	30	31
Spartan	lcd_db(0)	lcd_db(1)	lcd_db(2)	lcd_db(3)	lcr_rs	lcd_e	lcd_rw
Arduino	32	33	34	35	36	38	38	39
Spartan	J1(0)	J1(1)	J1(2)	J1(3)	J2(0)	J2(1)	J2(2)	J2(3)
Arduino	40	41	42	43	44	45	46	47
Spartan
Arduino	48	49	50	51	52	53	54	55
Spartan
Arduino	56	57	58	59	60	61	62	63
Spartan

Notes

The design uses the DCE RS-232 port, that is, the one closer to the middle of the board.