; classic RC2014 setup (8K ROM + 32K RAM) and a stock Serial I/O module ; The RAM module is selected on A15, so it has the range 0x8000-0xffff RAMSTART .equ 0x8000 RAMEND .equ 0xffff ACIA_CTL .equ 0x80 ; Control and status. RS off. ACIA_IO .equ 0x81 ; Transmit. RS on.