msx2.def

; msx2 fixed i/o ports and memory mapped i/o addresses

SLOT_SEL		    .equ 0xA8         ; primary slot select register
SUBSLOT_SEL		    .equ 0xFFFF       ; seconday slot select register

PAGE0_BASE		    .equ 0x0000
PAGE1_BASE		    .equ 0x4000
PAGE2_BASE		    .equ 0x8000
PAGE3_BASE		    .equ 0xC000

RAM_PAGE0		    .equ 0xFC         ; memory mapper registers
RAM_PAGE1		    .equ 0xFD
RAM_PAGE2		    .equ 0xFE
RAM_PAGE3		    .equ 0xFF

;
; ASCII 8Kb Mapper addresses
;
ASCII8_PAGE0_BASE	    .equ 0x4000
ASCII8_PAGE1_BASE	    .equ 0x6000
ASCII8_PAGE2_BASE	    .equ 0x8000
ASCII8_PAGE3_BASE	    .equ 0xA000

ASCII8_ROM_PAGE0	    .equ 0x6000
ASCII8_ROM_PAGE1	    .equ 0x6800
ASCII8_ROM_PAGE2	    .equ 0x7000
ASCII8_ROM_PAGE3	    .equ 0x7800

;
; BIOS machine info addresses
;
BIOS_VERSION1		    .equ 0x002B
BIOS_VERSION2		    .equ 0x002C
BIOS_MACHINE_TYPE	    .equ 0x002D
BIOS_VDP_IOPORT		    .equ 0x0006

;
; OpenMSX Debug ports
;
OPENMSX_DEBUG1		    .equ 0x2E
OPENMSX_DEBUG2		    .equ 0x2F

;
; TurboR CPU mode select
;
BIOS_CHGCPU		    .equ 0x180