Hola, --- Marko_Mäkelä <msmakela@cc.hut.fi> wrote: > > Because the processor decodes the instruction opcode > while fetching the > second byte of the instruction. In the beginning of > the 2nd cycle, it > does not know whether it'll be a one-byte > instruction or not. This > greatly simplifies the design, I think. I thought the 6502 fetched two bytes at a time, and threw away the second byte for 1-byte instructions. -S - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
Archive generated by hypermail 2.1.1.