At the risk of reviving at least two discussions better left dead, I have dug out some more IBM documents. I have a 4361 marketing leaflet - the 4361 was the entry level 370 system between the withdrawal of the 4341/4321 and the introduction of the 9370. I have practically no technical info so it won't contribute to the debate on power requirements, but it was a self contained, air-cooled unit often described as looking like a chest freezer. I also have the following pocket reference cards/books. IBM System/34 Command and OCL Statements Reference Summary (9th edition, April 1983), 170 pages IBM System/34 COBOL Reference Summary (4th edition, January 1982), 90 pages IBM System/34 Assembler Reference Summary (3rd edition, July 1979), 26 pages IBM System/32 SCP Command Statement Reference Summary (6th edition, May 1980), 23 pages It seems I have a second copy of the Command and OCL statements and Cobol reference summaries. *** IF ONE OF YOU OUT THERE WITH A SYSTEM/34 NEEDS EITHER OF THESE I WILL SEND IT/THEM TO YOU *** I might also photocopy the Assembler reference if you ask nicely. If anyone out there has a System/32 I shall be so amazed I might even send you my only copy of the reference card. The instruction set of the System/34 looks CISC and 8-bit-ish, although it handled 16 bit and (I think) 32 bit data. Typical speed seems to have been 0.1 to 0.3 MIPS. Someone on this list some months ago described it as "a room-sized 8088" which is probably about right, performance-wise... Philip.