Addr	Slinky		GR8RAM		TimeMachine
$0		RAddrL		RAddrL		RAddrL
$1		RAddrM		RAddrM		RAddrM
$2		RAddrH		RAddrH		RAddrH
$3		RData		RData		RData
$4								DMAAddrL
$5								DMAAddrH
$6		
$7		
$8		
$9		
$A		
$B		
$C		
$D					Readin/out	Readin/out
$E					Command		Command
$F		Bank		Bank		Bank


GR8RAM commands
CmdNum	Description				Argument
$00		SetReadinout			RiNum/RoNum
$EF		CFGPrgmEN				don't care
$EE		CFGEraseEN				don't care

GR8RAM Readin
RiNum	Description				Data
$10		SPI flash				{ MOSI(1), X(6), CS(1) }
$11		SPI flash + clk pulse	{ MOSI(1), X(6), CS(1) }
$13		CFG flash + clk pulse	{ CFGDin(1), X(7) }
$20		Mode					{ RF/nSlinky(1), X(4), Size(3) }
$21		RAddrHH					{ X(7), RAddr[24](1) }

GR8RAM Readout
RoNum	Description
$00		Magic 					$C1
$01		Card ID					$00
$10		SPI flash				{ MISO(1), X(7) }
$20		Mode					{ RF/nSlinky(1), X(4), Size(3) }

TimeMachine commands
$XX 	DMA into Apple RAM		Length
$XX 	DMA into Slinky RAM		Length
$XX 	DMA into Apple RAM		Length-256
$XX 	DMA into Slinky RAM		Length-256