Latest revision as of 11:47, 18 November 2018

MVS specific chip that does a bunch of unrelated things.

S ROM 16bit address latch for the SFIX ROM, same as S ROM portion of NEO-273
SM1 /CS output when Z80 is reading from ROM and onboard ROMs are enabled
ROMOE output for cartridge(s) PROG board
Video sync inversion (or not) to JAMMA connector
Coin counter and coin lockout outputs

Pinout

A1~A3,A7: 68k address bus
P0~P15: P bus
Q01~Q18: SFIX ROM address lines
SM1CS(ORO0): SM1 ROM chip select, made from SYSTEM(ORI0) OR SDROM(ORI1)
SYNCOUT = SYNCIN XOR SYNCREV (SYNCREV always tied to ground ?)
Q21, Q22: METER1, METER2
Q23, Q24: LOCK1, LOCK2
DS0, DS1: Data select for 2-slot systems made from SLOT0, SLOT1, PORTADRS and ROMOE, goes to a NEO-G0
COUNTOUT: Address decode from NEO-F0

@@ Line 1: / Line 1: @@
+{{ChipInfo
+|picture=neo-i0.jpg
+|pkg=QFP64R
+|manu=fujitsu
+|date=1990 ?
+|gates=
+|used_on={{PCB|MV2B}} {{PCB|MV1-1}} ...
+}}
 MVS specific chip that does a bunch of unrelated things.
-*[[S ROM]] address latch for [[SFIX]], same as S ROM portion of [[NEO-273]]
+* [[S ROM]] 16bit address latch for the [[SFIX ROM]], same as S ROM portion of {{Chipname|NEO-273}}
-*[[SM1]] /CS output when Z80 is reading from ROM and SM1/SFIX is enabled (SM1CS = SDROM OR SYSTEM)
+* [[SM1]] /CS output when {{Chipname|Z80}} is reading from ROM and onboard ROMs are enabled
-*/ROMOE output for PROG board (ROMOE = ROMOEU AND ROMEOU)
+* {{Sig|ROMOE|ROMOE}} output for cartridge(s) [[PROG board]]
-*Video sync output for JAMMA edge
+* Video sync inversion (or not) to [[JAMMA_connector_pinout|JAMMA connector]]
-*Coin counter and coin lockout output
+* [[Coin counter]] and [[coin lockout]] outputs
+=Pinout=
+{{Pinout|NEO-I0|640px}}
+*A1~A3,A7: {{Chipname|68k}} address bus
+*P0~P15: [[P bus]]
+*Q01~Q18: [[SFIX ROM]] address lines
+*SM1CS(ORO0): [[SM1]] ROM chip select, made from SYSTEM(ORI0) OR SDROM(ORI1)
+*SYNCOUT = SYNCIN XOR SYNCREV (SYNCREV always tied to ground ?)
+*Q21, Q22: METER1, METER2
+*Q23, Q24: LOCK1, LOCK2
+*DS0, DS1: Data select for 2-slot systems made from SLOT0, SLOT1, PORTADRS and ROMOE, goes to a {{Chipname|NEO-G0}}
+*COUNTOUT: Address decode from {{Chipname|NEO-F0}}
 [[Category:Chips]]