Is there an industry standard name for the hex file output format Keil uses for an 8051? In the target configuration, its called "HEX-80", but I'm not so sure that's the official name for this format. Any help appreciated.
No. That area of config in uV for the 8051 doesn't look anything like that. All it provides is a "Create HEX File" checkbox and a "HEX Format" droplist with only one choice: HEX-80. Hmmm...would be nice to see the 166 options in the 51 IDE. Anyway, thanks to all for your help. I've nailed the problem down and now, at least, have a direction to persue.
When you are using the LX51 Extended Linker/Locater (which is part of the PK51 Kit) you have more options. Reinhard
I checked and we do have PK51. To test, I checked the "Used Extended Linker (LX51)" option in the Device tab and while the Output tab then offered the additional HEX-386 in the drop list, it did not offer any controls where buffer fill could be specified.