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EPROMr Control Software V2.0.2 On-Line Documentation

Abstract

The EPROMr is a simple EPROM burner and reader intended for hobbyist use. The project has been designed for minimal cost and component count. It is NOT suitable for production use. If you require a production-quality burner, please contact Lewin A.R.W. Edwards regarding the EPROMr 3 product.

Copyright & Contact Information

Hardware design, control software and interface firmware are © Copyright 1998 by Lewin A.R.W. Edwards. They are licensed as FREELY DISTRIBUTABLE software.

Please direct all queries to:

Lewin A.R.W. Edwards
Tel +1 (914) 645-9098
Email sysadm@zws.com
WWW http://www.zws.com/

I am a contract programmer (embedded systems, device drivers, and other low-level code for a variety of operating systems) currently working from Port Chester, NY, USA. Please refer to my online resume if you are looking for some quality Windows, MacOS, OS/2 or embedded controller code (many CPUs/MCUs).

Acknowledgements

Most grateful thanks are due to Payman Habibelahi and Steven Murray, who helped me battle the insanities of the PC parallel port and solve the Vpp switching problem.

System Requirements

80386sx or better CPU
2Mb RAM (with less RAM, you will be unable to read or burn 27040 devices)
DOS (including Windows 95/98 in so-called "DOS mode")
PS/2-compatible bidirectional parallel port

Supported Chips

2764 8192x8 EPROM
27128 16384x8 EPROM
27256 32768x8 EPROM
27512 65536x8 EPROM
27010 131072x8 EPROM
27020 262144x8 EPROM
27040 524288x8 EPROM
831000 131072x8 mask ROM

Using the DOS Software

The DOS software bundle comprises two executable files: the DOS/4GW runtime, DOS4GW.EXE, and the EPROMr control program, EPROM.EXE.

Note: If running this software inside OS/2, your CONFIG.SYS file must specify IOPL=YES, and the DPMI_DOS_API property of your DOS box must be set to ENABLED.

Command-line options are:

-b

Check EPROM is blank.

-d

Run hardware diagnostic (requires external test hardware).

-f

Use software timing (NOT recommended; but may be necessary on some PCs).

-h

Use special timing to fix problems with certain Pentium(r)-class PCs. Do not use this switch unless it is necessary for your system; refer to the FAQ.

-paddress

Use LPT port at base I/O address (default is 378h, LPT1). There should be no space between the -p switch and the address, and the address should be specified in hexadecimal.

-n

(Used in conjunction with -w) Do not verify after write operation. The use of this switch is strongly discouraged, for reasons which are documented in the EPROMr FAQ.

-q

Quiet mode - no switch setting confirmation or detailed failure messages.

-ttype

Select chip type, where type is one of 2764, 27128, 27256, 27512, 27010, 27020, 27040, 834000, or generic. If you specify -tgeneric, you must also specify the size of your generic device with the -vsize parameter.

-vsize

Specify size of generic device in bytes (decimal), or override programmed size of one of the default chip types. This parameter should be specified after the -ttype parameter.

-w

Write EPROM (if this parameter is not specified, a read operation is assumed).

Some example command lines are shown below:

Write "myfile.bin" to a 27020 chip:
eprom -t27020 -w myfile.bin

Read a 27040 chip to "dump.bin":
eprom -t27040 dump.bin

Read a 16MByte device (using a customized EPROMr) to "16meg.bin":
eprom -tgeneric -v16777216 16meg.bin

Run hardware diagnostic on EPROMr attached to port 278h (LPT2):
eprom -p278 -d

Troubleshooting & Enhancements

Please refer to the EPROMr FAQ document for troubleshooting hints and enhancements.

zws.com and all original content herein is © Copyright 2002 by Lewin A.R.W. Edwards. "zws.com" is a trademark protected under U.S. and international law. Infringement or attempted dilution of the intellectual property rights held by Lewin A.R.W. Edwards will be prosecuted to the fullest possible extent.