; JED2EQN -- JEDEC file to Boolean Equations disassembler (Version V063)
; Copyright (c) National Semiconductor Corporation 1990-1993
; Disassembled from SP180_U1.jed. Date: 2024-01-30
;$GALMODE MEDIUM

chip SP180_U1 GAL16V8

A18=1
A17=2
A16=3
A15=4
A13=5

i6=6

/MREQ=7
/IORQ=8

i9=9

GND=10

/input_11=11

/ROM_CS=12
/RAM2_CS=13
/RAM1_CS=14

/f15=15
/f16=16
/f17=17
/f18=18

o19=19

VCC=20


@ues ffffffffffffffff
@ptd unused

intermediate terms

memory	=	MREQ *  /input_11


equations

/o19	= IORQ * /A15 * A13

o19.oe	= vcc

f18	= f17
	+ f18 * /MREQ
	+ f18 * /A18
	+ f18 * /A17
	+ f18 * /A16
	+ f18 *  A15

/f18.oe	= vcc

f17	= gnd

/f17.oe	= gnd

f16	= gnd

/f16.oe	= gnd

f15	= memory *        /A17 *  A16
	+ memory * /A18 *  A17
	+ memory *  A18 *        /A16
	+ memory *  A18 *  A17 *  A16 * A15
	+  f16 *  f15
	+  A15 *  IORQ

/f15.oe = vcc

RAM1_CS = memory * /A17 * /A18 * /A16 *  i9
RAM2_CS = memory * /A17 * /A18 * /A16 * /i9 * /f18
	+ /i6

/RAM1_CS.oe = vcc
/RAM2_CS.oe = vcc

ROM_CS	= memory * /A18 * /A17 * /A16 * /A15 *  f18 * /i9
	+ memory *  A18 *  A17 *  A16 * /A15 * /f18

/ROM_CS.oe = vcc