View Full Version : Using GTEK 7128 EPROM Programmer?

January 4th, 2011, 03:47 PM
Hi Folks,

I'm trying to program some 2716 EPROMs using this and am having some difficulty with the Intel Hex format. I figured this would be the place to ask, since the programmer was released around time of S-100 bus.

The problem is, every time I send an Intel Hex line over serial the programmer is responding:


I notice the line does get programmed however. The hex lines and checksums are
correct. The problem is, I'm unable to transfer all the lines in one shot, because the device keeps returning error and exiting the receive mode.

If anyone has used these can you please chime in?


PS, EPROMs are erased, CRLF at end of each record, IHex checks out on PC

January 5th, 2011, 01:44 PM
I'm going to reply to myself now that the programming works!

Things to note about interfacing to this programmer:

- It expects CR-LF at end of each line.
- It can only handle Intel Hex records where the size is 0x10 or less. I used the default records that screc_cat
generated and they were 0x20 in size. 0x20 doesn't work.
- Flow control must be working. I used XON/XOFF

I used TeraTerm for Windows to transfer the file. With these setting:

- Use CR-LF on send
- 1200 baud Xon/Xoff
- Byte to byte delay 50 msec
- Line to line delay 200 msec
- When sending file, make sure your text file has CR-LF in it (0xD,0xA) and click BINARY box

In a few minutes your 2716 is programmed!