Trinity

Registers

Address	Register Name	Additional Info
$AF:E800	JOYSTICK0	Joystick 0 -- J7, next to the SD card
$AF:E801	JOYSTICK1	Joystick 1 -- J8
$AF:E802	JOYSTICK2	Joystick 2 -- J9
$AF:E803	JOYSTICK3	Joystick 3 -- J10, next to the buzzer
$AF:E804	JOYSTICK_MODE	Bit Mask Bit Name Additional Info $01 NES_SNES_EN0 Enable the NES/SNES mode on port 0 $02 NES_SNES_EN1 Enable the NES/SNES mode on port 1 $04 NES_SNES_JOY 0 = NES, 1 = SNES $40 NES_SNES_DONE Poll to see if the deserializer is done $80 NES_SNES_TRIG Set to start the deserializer
$AF:E805	REVOFPCB_C	First character of board ID (should be "C")
$AF:E806	REVOFPCB_4	Second character of board ID (should be "4")
$AF:E807	REVOFPCB_A	Third character of board ID
$AF:E808	NES_SNES0_DAT_LO	Contains 8 bits of NES/SNES controller for port 0 7 6 5 4 3 2 1 0 B Y SELECT START UP DOWN LEFT RIGHT
$AF:E809	NES_SNES0_DAT_HI	Contains hi 4 bits of SNES controller for port 0 7 6 5 4 3 2 1 0 A X L R
$AF:E80A	NES_SNES1_DAT_LO	Contains 8 bits of NES/SNES controller for port 1 7 6 5 4 3 2 1 0 B Y SELECT START UP DOWN LEFT RIGHT
$AF:E80B	NES_SNES1_DAT_HI	Contains hi 4 bits of SNES controller for port 1 7 6 5 4 3 2 1 0 A X L R
$AF:E80C	CFP9301_REV	Hardware revision of the CPLD Code
$AF:E80D	DIP_USER	DIP switches 3, 4, and 5, which can be user defined.
$AF:E80E	DIP_BOOTMODE	Bits Bit Name Additional Info $01 BOOT_MODE0 Boot mode low bit (DIP1) $02 BOOT_MODE1 Boot mode high bit (DIP2) $80 HD_INSTALLED IDE drive is installed (DIP8)

Boot Mode Bits

DIP2	DIP1	Bit values	Boot mode
OFF	OFF	1,1	Boot on BASIC
OFF	ON	1,0	Boot from SD CARD
ON	OFF	0,1	Boot from Floppy (Illegal if MachineID doesn't specify a Floppy)
ON	ON	0,0	Boot from HDD (Illegal if Dip switch 8 is OFF (1))