Yes but INX is 2 cycles and the zero page versions INC $55 and INC $55,X are 5 a...

chillingeffect on June 24, 2017 | parent | context | favorite | on: Texas Instruments’ Biggest Blunder: The TMS9900 Mi...

Yes but INX is 2 cycles and the zero page versions INC $55 and INC $55,X are 5 and 6 cycles, respectively. These regs are 2.5x to 3x the speed of ext mem. So having no internal regs would just be a disaster.