HEPAX-0C Prototype version ROM images.

[SteenPetersen]

So next step is to check out the mass storage and the media I got.
The good old tape drive seems to be working - after charging the old battery for an hour I was able to get the directory of one of my tapes:
ASM3A
ZENROM
CCD1A
CCD2A
PPCROM1
PPCROM2
DEVEL1
DEVEL2
PLOT1A
PLOT2A
EXTIO
AUTOST
SM1C
MATH2A
XF1B
PLOTTER
BOOTROM
DISASS
So far so good - this was all the pre-HEPAX stuff.

So next up the HP 9114 tape drive - where I have two disks with these labels:
- HP-41 ROM IMAGES (likely the images seen above plus some more)
- HP-41 VM MCODE (this must be it!)

I have a modified 9114 with a W&W Software Products GmbH power supply/battery modification. I plugged in the power supply - nothing - no red LED on the power supply. Opened it up and found the fuse to be toast. Easy to fix (short circuit), but still no red LED... Found my lab power supply - set it to 6 V and connected it (I checked the schematics (found on-line) on where to connect it) - no red LED on the 9114. Measured 6V on the output of the battery pack, so the 9114 is getting the right voltage - even with 3A available from the power supply.

Any suggestions on what to do next? - are there any loose connectors or fuses inside the 9114 which could cause this?

Thanks in advance
Steen

PS: Diego, I will likely accept your offer, but I will do a little more exploring in the "treasure chest" first.