I have a MS, but I have used it very little thus far. I thought I'd start testing it, especially in Happy and Super Archiver modes. I have both of those (original) upgrades, and am pretty familiar with their operations.
My MS Happy is set to "H1" and the MS rom was flashed with the "HAPPY1.ROM" file. My test computer is a totally stock 800XL, then a 320K XE and last a 600XL with Antonia.
I had flashed H1 and then had issues getting the drive to program with the Rev 7.1 software. I then went back and flashed H2 and H3. Both those worked fine, so I re-flashed H1. This time, the drive programs fine, so perhaps I did something wrong the first time around.
I also ran some quick tests of the Super Archiver setting, and it appears to work fine.
Can anyone tell me what the difference is between the H1, H2, and H3 roms? I presume H1 is "stock" since it passes the diagnostics ROM test.