On Thu, 14 Aug 2008 18:33:30 -0400, John W Kennedy wrote: > Actually, I was thinking of the 1401. But both the 1620 and the 1401 > (without the optional Advanced Programming Feature) share the basic > omission of any instruction that could do call-and-return without > hard-coding an adcon with the address of the point to be returned to. > (The Advanced Programming Feature added a 1401 instruction, Store > B-address Register, that, executed as the first instruction of a > subroutine, could store the return-to address.)
Raaaagh!!!! Don't. Bring. Back. Those. Nightmares. Please. The 1401 was a decent enough processor for many industrial tasks -- at that time -- but for general programming it was sheer horror. M4 -- http://mail.python.org/mailman/listinfo/python-list
