Yes, as it was part and parcel of every 1410. but I have not tested it yet.
Sent from my iPad > On Jul 11, 2023, at 12:06, Van Snyder via cctalk <cctalk@classiccmp.org> > wrote: > > On Mon, 2023-07-10 at 21:32 -0500, Jay Jaeger via cctalk wrote: >> Over the past couple of months I have been working on my FPGA >> implementation of the IBM 1410 1960's era pre System/360 system again. >> I am pleased to share that the CPU now passes a significant diagnostic, >> CU01, which tests almost all of the instructions, and also tests I/O >> with overlap and the priority feature (interrupts). > > Did you implement the compatibility feature, so it can run 1401 > programs too? > >
