PHD - 16 DIAG CARD RESULTS of my 10 mhz xt clone mobo

DMA page register
test	1
	 1	Data bits high	fail

Port b and system signals
test	9
	 1	Refresh bit toggle	fail
	 4	Refresh signal test	fail
	 5	Address enable(AEN)test	fail
	 6	system bus high enable	fail
			SBHE part of a chip i cannot remember

DMA transfers
test	B
	 3	DMA Channel 0	fail 12
					means 
						1  Error during transfer RAM to i/o (1st transfer)
						 2 Port lost value during transfer from port