Title	  M015 BOARD COMPUTER (AKI80)
Pattern	  ADDRESS DECODER
Revision  0.00


CHIP	U2	GAL16V8

;1]   [2]   [3]   [4]   [5]   [6]   [7]   [8]   [9]   [10]
MREQ  RFSH  IORQ  A15   A14   A13   A12   A7    A6    GND

;11]  [12]  [13]  [14]  [15]  [16]  [17]  [18]  [19]  [20]
-     -     -     -     -     -     IOE   VRE   SRE   VCC


EQUATIONS

/SRE	= A15 * A14 * A13 * A12 */MREQ * RFSH	; Internal RAM selected


/VRE	= A15 */A14 *            /MREQ * RFSH	; External Memory selected
	+ A15 *      /A13 *      /MREQ * RFSH
	+ A15 *            /A12 */MREQ * RFSH


/IOE	= A7 */A6 */IORQ			; External I/O selected