(E)EProm, PIC and GAL Programmer
(E)EProm, PIC and GAL ProgrammerBelow you find the programming device I use for my robot projects. The device isfairly generic: it has a 16 bits address port, an 8 bit dataport, an 8 bit control port and a simple programmable voltage source. Since I only use a few components: (E)EPROM, GAL16V8 and PIC16F84, the programming software is capable of handling just these components.The device is controlled by the LPT port in SPP mode. The software can be run under Windows 98/ME/NT/2000/XP. The latter three (WinNT, Win2000 and XP) make use of a driver to get access to the LPT port. In order to be flexible the programmer make use of adapters. For each type of device a suitable adapter is connected to the programming device.
Figure 1: The programmer in a small plastic case together with 3 adapters.
原理图
适配器原理图
On this page you find the schematics of the programmer and some adapters. As you can see the programmer consists of several TTL latches for storing address (IC1 and 2), data (IC 3 and 4) and control data (IC 5). Two bits (Q4, Q5)of the control-port are used to set the programming voltage. Q6 is used to control the direction of data and Q7 controls the lower/upper nibble selection of the LPT SPP-data input. That leaves 4 control-lines for programming signals to the 'programmee'.All signals of the programmer end up in connector J2, and to this connector a device-adapter may be attached. At this moment I use 4 types:
[*]An adaptor for the Eprom 27C64, EEProm 28C64
[*]An adaptor for the GAL 16V8
[*]An adaptor for the PIC 16F84A
[*]An ICSP adaptor for the PIC 16F872
The program programmer.exe can program these devices. It loads a binary file (*.rom) to program the eproms, a jedec (*.jed) to program the GAL, and a binary file (*.hex) to program the PIC devices. The program is also capable to read and verify these devices.
windows版软件，看说明，要把那个*.sys文件复制到相应目录
并口功能很强大，并口编程器简单易做，故障率还低。唯一的缺点是目前大部分电脑不支持并口了，软件没有更新，支持的器件有限。 还有个大家都没注意的问题，那就是并口的接线多，容易出现个别接触不良:lol
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