FIRST_RAM_BANK .equ 0x80 ; low 512K of physical memory is ROM/ECB window.
RAM_KB .equ 512
Z180_IO_BASE .equ 0x40
-MARK4_IDE_BASE .equ 0x80
-MARK4_IDE_DATA .equ MARK4_IDE_BASE
; No standard clock speed for the Mark IV board, but this is a common choice.
CPU_CLOCK_KHZ .equ 36864 ; 18.432MHz * 2
FIRST_RAM_BANK .equ 0x00 ; all memory is RAM on P112
RAM_KB .equ 1024
Z180_IO_BASE .equ 0x00
-P112_IDE_BASE .equ 0x50
-P112_IDE_DATA .equ (P112_IDE_BASE+0x08)
; Believe most P112 kits shipped with 16MHz oscillators, I have tried faster
; (18.432MHz) but this made the machine unstable.