A GCC COBOL status report

Posted Feb 27, 2023 21:51 UTC (Mon) by nix (subscriber, #2304)
In reply to: A GCC COBOL status report by amcrae
Parent article: A GCC COBOL status report

The 6502 had a beautiful design: a flag bit (the D bit, bit 3) which changed the normal arithmetic instructions so they operated on BCD instead.

This design went nowhere because MOS patented it, so it was never reused in any architecture I'm aware of.