NEO-I0: Difference between revisions

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{{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.
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]]
[[Category:Chips]]

Latest revision as of 11:47, 18 November 2018

Package QFP64R
Manufacturer
First use 1990 ?
Used on MV2B MV1-1 ...

MVS specific chip that does a bunch of unrelated things.

Pinout


Edit this 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