HP 4145B Semiconductor Parameter Analyzer

[Jeff_HxC2001]

My apologies for resurrecting this, hugely appreciate the info on here. I've used the old HxC for lots of audio console floppy projects but am stumped by my HP 4145B. I've wired it up as intended and copied to a fresh FAT32 card, but am getting M02 errors on the unit & a solid red light on the emulator. I feel I must be missing something very simple! Are there any steps to the process I may have missed that are obvious to previous SD module users?
Best wishes
James

Please post a picture of the hxc emulator's screen.

[kedwardsmetrop]

Hi Jeff
Appreciate the response - I have the SD Slim version without a screen, are there any diagnostics I can do with the lamp/buzzer?
Thanks
James

[hjf]

I've tried this with a Gotek drive with HxC firmware, and the disk images provided here. In every case I'm getting error M19 (according to the manual, "The disk was not initialized for the 4145A" - I have a B but that's OK, the service manual is for A)

The device boots fine with a real floppy so I know it's working.

I've also tried with FlashFloppy before and I was getting the same error M19.

Edit: it was a hardware issue. My GOTEK had a bad line driver. A BC847 (or similar) transistor on the Floppy DATA line. I discovered it by placing an oscilloscope and noticing it only had a few millivolts.

The image on the first page of this thread didn't work, however. I was able to make it work with the one called 4145B_120.zip available in this thread.