biu-fifo2dma.nounc

input	ok                       0
input	fain                     0
input	dackn                    1
input	cntgt1                   0
output	dreq                     0
output	frout                    0

0  1	ok+                      | frout+ 
1  2	fain+                    | dreq+ frout- 
2  3	[cntgt1+] fain* dackn-   | dreq-  
3  4	fain- dackn+             | frout+  
4  2	fain+                    | dreq+ frout- 
2  5	[cntgt1-] fain* dackn-   | dreq-  
5  0	ok- fain- dackn+         |