產品說明0

 

基於input/output指令硬件虛擬的USB轉並口（25針SubD型接頭）轉換器,支持包括SSP，EPP，ECP的所有並行模式，16字節FIFO緩存,高速USB (傳送速度480 Mbit/s; input/output 指令8 kByte/s)

  真正的USB轉並口 支持多種並口仿真器 如MSP430 AVR ARM

  USB轉並口設備採用USB2.0高速連接模式，兼容USB1.1/USB1.0，支持打印口/SPP/ECP/EPP模式，自適應端口地址和端口號，是一款真正的計算機並口，不是市面上出售的只支持打印機的USB轉並口設備.可以和各種並口編程器、仿真器、下載電纜以及並口加密狗等設備連接。在沒有並口的電腦上安裝一個真正的並口出來.

 xilinx、altera、Lattice CPLD/FPGA下載電纜TI-DSP並口仿真器、ARM簡易wiggler 和SDT 下載線、MSP430 單片機下載線,AVR 單片機的下載線,希爾特並口編程器和並口51仿真器,RVO3050虛擬示波器,支持CPLD ISP JTAG 等仿真, 編程支持打印機.

This list should grow with appropriate user feedback…

Attention:Using USB2LPT withprogramming devicesmay lead to wrong or bad programmed chips! The reason is lengthening of the programming pulse due to longer parallel port access emulation time. The result depends on whether the PC software or the programming device creates the programming pulse whether the chip requires timely exact pulses or not. In general, ISP chips (newer micro controllers, or JTAG interfaces), serial EEPROMs, and flash memories are excluded. If the length of programming pulse is important (e.g. for correct programming in mass production), USB2LPT should not be used. Furthermore, programming software should not be installed onto too fast computers. Depending on software quality, this may lead to too short programming pulses.

Attention 2:Although using USB2LPT with programming devices is obvious, it is generally not recommended. Programing times are much too long to get ready. At the top I measured that the GALEP software needs some minutes(!) for programming the smallest PIC (12F508). PCMCIA parallel adapters do not have this disadvantage.

• AVRDUDE(Command-line driven programmer for Atmel AVR, ATmega)
  In most cases you should use-P lpt1for specifying port address, even when Windows XP' device manager lies and says ?LPT3「. AVRDUDE uses only 3 fixed port addresses for the names:
  • lpt1 = 0x378
  • lpt2 = 0x278
  • lpt3 = 0x3BC
    
  Speed: about 5 % (ATmega16), 16 IN operations per bit
  AVRDUDE will be trapped via debug registers only, therefore currently no function in Windows XP!

• PonyProg2000(Freeware programmer esp. for PIC, ATmega, serial EEPROMs)
  • The INI file must be modified to get PonyProg to work: change ?AutoDetectPorts=NO「!
• Xilinx iMPACT(JTAG programmer esp. for Xilinx CPLD and FPGA)
  • Built-in automatic port detection fails, therefore iMPACT needs the following environment variables:
    • set XIL_IMPACT_ENV_LPT_BASE_ADDRESS=378(according to setting of USB2LPT in Device Manager)
    • set XIL_IMPACT_ENV_LPT_ECP_ADDRESS=778(always LPT_BASE + 400h)
    Where can I set environment variables under 2k/XP?
    Here:Start→Settings→Control Panel→System→Enhanced(?)→Environment variables
• ispVM System(use new driver), for ispLSI1016E (CPLD) same performance as for true parallel port
• All of (my)------programs(of course!)
• LabView
  • Only with thecurrentdriver version due to DWORD-wide port accesses (really!)
• SP12(Programmer for Atmel AVR,http://www.xs4all.nl/~sbolt/e-spider_prog.html)
• WinPIC
• PIC programmer software fromwww.-----------
• Antenna analyzerby(?) Gerd Koetter (seehere)
• MSP430 programming viamsp430-jtag
• Discolitez Delux32 (or ?DiscoLitez 32 Deluxe「)
• New:GALEP-4(GALEP-3 not tested), but only withthis patch

  There is also a list of unsuccessfully tested applications:

  • Matlab:digitalio('parallel','lpt1');

   

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