I was bored and found a HP-27S

[jebem]

(06-28-2014 12:05 AM)Mark Hardman Wrote:  

(06-27-2014 10:46 PM)jebem Wrote:  but from my research in the Net, apparently no one could dump it...

Your research is faulty.

I had no problem dumping the HP-27S ROM following the instructions and utilities found here:

CPROMUPL.ZIP

Hi Mark,
What I meant is that anyone can find copies of the ROM images for other models like the 42S or 28S, but it seems that no one can find it for the 27S model... and a search in Google reveals some people claiming that they failed dumping the 27S despite having success with other models...
But maybe you can point us to a link where we can download it?

I have read that article from Christoph Gießelink a couple of times, but if you read my posts you will see that I just acquire this 27S for the first time... so I had no time to investigate ROM dumping at this point, besides it seems it requires a HP-48 series machine as a man in the middle (did you try to use a HP-50G?).
However I understand that it is handy to be able to run the 27S in a emulator, of course