English Amiga Board - View Single Post - Pacman - the Amiga conversion from the arcade game

DanScott · 06 September 2019, 21:25

Well... of course, BC, DE and HL can be used as address registers, but also the 8 bit components B,C,D,E,H,L are also data registers... so you can't really map 1 to 1 to 68k instructions... but I am sure that there is some efficient way of doing it

possibly to use memory locations to hold the 8 bit data regs, and pull from memory a 16 bit value into a 68k address register ?

06 September 2019, 21:25	#4
DanScott Lemon. / Core Design Join Date: Mar 2016 Location: Tier 5 Posts: 1,213	Well... of course, BC, DE and HL can be used as address registers, but also the 8 bit components B,C,D,E,H,L are also data registers... so you can't really map 1 to 1 to 68k instructions... but I am sure that there is some efficient way of doing it possibly to use memory locations to hold the 8 bit data regs, and pull from memory a 16 bit value into a 68k address register ?