I have a copy of Eramco's 'David Assembler' manual although my MLDL and EPROMS were stolen. I bought a replacement MLDL reportedly with the David Assembler last month from Germany, but have yet to hold it in my hands.
I would be happy to copy the 70 pages (@.10/pg. plus around $10 shipping) of the manual for you. I will have to go to a copy center to duplicate this as it is not on my computer/printer. This is NOT the correct source for MLDL information in my opinion. My recommendation is a copy of Ken Emery's 'HP-41 MCODE For Beginners' published by Synthetic, ISBN0-9612174-7-2, and used with the hp VASM listings.
I also have a copy of the Eramco ES RSU 1A Operating System QRG and Eramco Systems Products Price list dated 16 Oct. '85. Let me know what you want copied.
I can appreciate the difficulty and frustration of finding info. on these scarce and aged items. I had a similar situation, and all but one refused to step out to help me, giving me 'publishing rights' as a justification to require me to spend up to $30 to get this kind of info. Don
Edited: 1 June 2003, 2:55 a.m.