lcd_test.bsf

采用vhdl语言编写的16x2液晶显示模块的驱动程序。在quartus中编译完成

/*
WARNING: Do NOT edit the input and output ports in this file in a text
editor if you plan to continue editing the block that represents it in
the Block Editor! File corruption is VERY likely to occur.
*/
/*
Copyright (C) 1991-2004 Altera Corporation
Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
support information,  device programming or simulation file,  and any other
associated  documentation or information  provided by  Altera  or a partner
under  Altera's   Megafunction   Partnership   Program  may  be  used  only
to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
other  use  of such  megafunction  design,  netlist,  support  information,
device programming or simulation file,  or any other  related documentation
or information  is prohibited  for  any  other purpose,  including, but not
limited to  modification,  reverse engineering,  de-compiling, or use  with
any other  silicon devices,  unless such use is  explicitly  licensed under
a separate agreement with  Altera  or a megafunction partner.  Title to the
intellectual property,  including patents,  copyrights,  trademarks,  trade
secrets,  or maskworks,  embodied in any such megafunction design, netlist,
support  information,  device programming or simulation file,  or any other
related documentation or information provided by  Altera  or a megafunction
partner, remains with Altera, the megafunction partner, or their respective
licensors. No other licenses, including any licenses needed under any third
party's intellectual property, are provided herein.
*/
(header "symbol" (version "1.1"))
(symbol
	(rect 16 16 192 144)
	(text "lcd_test" (rect 5 0 49 14)(font "Arial" (font_size 8)))
	(text "inst" (rect 8 112 25 124)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "clk" (rect 0 0 15 14)(font "Arial" (font_size 8)))
		(text "clk" (rect 21 27 36 41)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "SYS_RST" (rect 0 0 56 14)(font "Arial" (font_size 8)))
		(text "SYS_RST" (rect 21 43 77 57)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 176 32)
		(output)
		(text "LCD_RS" (rect 0 0 47 14)(font "Arial" (font_size 8)))
		(text "LCD_RS" (rect 108 27 155 41)(font "Arial" (font_size 8)))
		(line (pt 176 32)(pt 160 32)(line_width 1))
	)
	(port
		(pt 176 48)
		(output)
		(text "LCD_RW" (rect 0 0 50 14)(font "Arial" (font_size 8)))
		(text "LCD_RW" (rect 105 43 155 57)(font "Arial" (font_size 8)))
		(line (pt 176 48)(pt 160 48)(line_width 1))
	)
	(port
		(pt 176 64)
		(output)
		(text "LCD_E" (rect 0 0 37 14)(font "Arial" (font_size 8)))
		(text "LCD_E" (rect 118 59 155 73)(font "Arial" (font_size 8)))
		(line (pt 176 64)(pt 160 64)(line_width 1))
	)
	(port
		(pt 176 80)
		(output)
		(text "LCD_D[7..0]" (rect 0 0 67 14)(font "Arial" (font_size 8)))
		(text "LCD_D[7..0]" (rect 88 75 155 89)(font "Arial" (font_size 8)))
		(line (pt 176 80)(pt 160 80)(line_width 3))
	)
	(port
		(pt 176 96)
		(output)
		(text "LCD_DIR" (rect 0 0 49 14)(font "Arial" (font_size 8)))
		(text "LCD_DIR" (rect 106 91 155 105)(font "Arial" (font_size 8)))
		(line (pt 176 96)(pt 160 96)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 160 112)(line_width 1))
	)
)