12C Oddity

[Katie Wasserman]

(10-08-2015 01:44 AM)Dwight Sturrock Wrote:  After reviewing the manual, it appears this is normal behavior- as Thomas said. Each register, consisting of 8 program lines, is converted to this sequence as the you expand the size of program. I found this confusing, being accustomed to the 15C.

The programming model for the 12C is incredibly simple compared to the 15C. All 100 possible GTO's take up just a byte in memory. The special GTO 00 instruction simply means halt as 00 is not a valid line number. This has the advantage of making programs take up less memory than the 15C but also greatly limits the number of possible instructions. The major downside to having no symbolic labels and having a dumber than dirt editor is that programs really can't be edited, so have to be reentered to accommodate almost any change.