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Thread: Which RAM is Which?

  1. #1

  2. #2
    CPS2 Person.
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    The color ram is the 5864 ram chips, they are in your pic.

    edit, btw I think the ram chips in your pic are video ram, 5,6 video. 9,10 backup

    I contradicted myself chips 9 and 10 are 5864 like I first stated but misread the pic, think I need glasses
    Last edited by mainman; 08-04-2011 at 02:07 AM.


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  3. #3
    Mr Neo Fix-it channelmaniac's Avatar
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    9 & 10 aren't backup... those should be the color RAMs, a.k.a. Pallette RAMs.

    The Backup RAM chips should have battery power on Pin 28 with the power to the board off.

    RJ
    Call me a cheap bastard... I learned to fix things to save money... even surface mount soldering...

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  4. #4

  5. #5
    CPS2 Person.
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    Quote Originally Posted by Xian Xi View Post
    Are the 5864 RAMs swappable with the 62256? Also what is RAM7 & 8? More Video RAM?
    Negative, the 62256 is not a replacement 5864.

    Here are the closet I could find, they are not a pin for pin drop in replacement but they are functional compatible

    http://search.digikey.com/scripts/Dk...me=428-1785-ND

    http://search.digikey.com/scripts/Dk...6264-55SNXI-ND


    The neo has 4 video ram, 2 work ram, 2 backup ram and 2 color ram

    7 and 8 are video ram
    Last edited by mainman; 08-04-2011 at 03:16 AM.


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    Quote Originally Posted by darksoft View Post
    Don't hide it, you are angry beacuse if a multiboot is made, you will not be the only one that can Play Progear

  6. #6

  7. #7
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    I got some brand new chips that should work. Just let me know how many you need.

    EDIT: Let me double check my stock. I know that I have 62256 but I'm not sure about 5864.
    Last edited by shadowkn55; 08-04-2011 at 09:20 AM.

  8. #8
    Mr Neo Fix-it channelmaniac's Avatar
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    I'm on the road with my son so I can't check yet for ya.

    RJ
    Call me a cheap bastard... I learned to fix things to save money... even surface mount soldering...

    Visit my website: http://www.arcadecomponents.com

    ---------

    I've repaired boards for many members here.

    Want me to repair your arcade game board? Look here. I do MVS, AES, and many other game boards.

    My repair logs are have moved to NewLifeGames.com!!!

  9. #9
    Chang's Combo Meal #4
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    First of all, double check the connections:

    Code:
    MV1FZ   COLOR RAM
    
    RAM9
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U8 (2), U10 (3)
    12	D1	U8 (3), U10 (4)
    13	D2	U8 (4), U10 (7)
    14	GND	GND
    15	D3	U8 (5), U10 (8)
    16	D4	U8 (6), U10 (13)
    17	D5	U8 (7), U10 (14)
    18	D6	U8 (8), U10 (17)
    19	D7	U8 (9), U10 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    
    
    RAM10
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U9 (2), U11 (3)
    12	D1	U9 (3), U11 (4)
    13	D2	U9 (4), U11 (7)
    14	GND	GND
    15	D3	U9 (5), U11 (8)
    16	D4	U9 (6), U11 (13)
    17	D5	U9 (7), U11 (14)
    18	D6	U9 (8), U11 (17)
    19	D7	U9 (9), U11 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    As for replacements:

    http://www2.mouser.com/ProductDetail...5CukH3qg%3d%3d

    The only thing you could be unsure of is the pitch since original RAM is 450mil (11.43mm) while Mouser RAM is 330mil (8.38mm) and the datasheet doesn't have dimension drawings. The solder pad rows on the MVS board are about 9mm apart from each other but I think the 330mil in this case refers to the chip body, see for instance this RAM from a different manufacturer which has a perfect footprint for the MVS board. So I'm pretty positive the Mouser RAM will fit fine as well.

    As for Digikey, they don't stock any drop-in replacements.

  10. #10

  11. #11

  12. #12
    Metal Slug Mechanic
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    I got some KM6264BLG-7 that should fit and work fine.

  13. #13
    JammaNationX
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    Quote Originally Posted by MKL View Post
    First of all, double check the connections:

    Code:
    MV1FZ   COLOR RAM
    
    RAM9
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U8 (2), U10 (3)
    12	D1	U8 (3), U10 (4)
    13	D2	U8 (4), U10 (7)
    14	GND	GND
    15	D3	U8 (5), U10 (8)
    16	D4	U8 (6), U10 (13)
    17	D5	U8 (7), U10 (14)
    18	D6	U8 (8), U10 (17)
    19	D7	U8 (9), U10 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    
    
    RAM10
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U9 (2), U11 (3)
    12	D1	U9 (3), U11 (4)
    13	D2	U9 (4), U11 (7)
    14	GND	GND
    15	D3	U9 (5), U11 (8)
    16	D4	U9 (6), U11 (13)
    17	D5	U9 (7), U11 (14)
    18	D6	U9 (8), U11 (17)
    19	D7	U9 (9), U11 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    As for replacements:

    http://www2.mouser.com/ProductDetail...5CukH3qg%3d%3d

    The only thing you could be unsure of is the pitch since original RAM is 450mil (11.43mm) while Mouser RAM is 330mil (8.38mm) and the datasheet doesn't have dimension drawings. The solder pad rows on the MVS board are about 9mm apart from each other but I think the 330mil in this case refers to the chip body, see for instance this RAM from a different manufacturer which has a perfect footprint for the MVS board. So I'm pretty positive the Mouser RAM will fit fine as well.

    As for Digikey, they don't stock any drop-in replacements.
    Continuity is 100% according to that pinout.

    Quote Originally Posted by shadowkn55 View Post
    I got some KM6264BLG-7 that should fit and work fine.
    Direct replacement? How much?

  14. #14
    Metal Slug Mechanic
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    According to the datasheet, yeah. Not much. A few bucks and a little for shipping should cover it. Just me PM for the details.

  15. #15
    JammaNationX
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    Problem is fixed now. I was going over the board again on the underside and noticed two plate throughs that were connected via smaller than a hairline of solder and those connected to U9 and U11.

  16. #16
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    Hi! Can you show me connections about RAM5 and RAM6? PCB MV1FZ.

  17. #17
    Chang's Combo Meal #4
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    Code:
    MV1FZ  Video RAM
    
    RAM5 (lower)
    
    1	A14	LSPC2 (40)
    2	A12	LSPC2 (37)
    3	A7	LSPC2 (31)
    4	A6	LSPC2 (30)
    5	A5	LSPC2 (29)
    6	A4	LSPC2 (27)
    7	A3	LSPC2 (26)
    8	A2	LSPC2 (25)
    9	A1	LSPC2 (24)
    10	A0	LSPC2 (23)
    11	D0	LSPC2 (41)
    12	D1	LSPC2 (42)
    13	D2	LSPC2 (43)
    14	GND	GND
    15	D3	LSPC2 (44)
    16	D4	LSPC2 (45)
    17	D5	LSPC2 (46)
    18	D6	LSPC2 (47)
    19	D7	LSPC2 (48)
    20	CE	GND
    21	A10	LSPC2 (35)
    22	OE	LSPC2 (59)
    23	A11	LSPC2 (36)
    24	A9	LSPC2 (34)
    25	A8	LSPC2 (32)
    26	A13	LSPC2 (38)
    27	WE	LSPC2 (60)
    28	VCC	VCC
    
    RAM6 (higher)
    
    1	A14	LSPC2 (40) 
    2	A12	LSPC2 (37) 
    3	A7	LSPC2 (31) 
    4	A6	LSPC2 (30) 
    5	A5	LSPC2 (29) 
    6	A4	LSPC2 (27) 
    7	A3	LSPC2 (26) 
    8	A2	LSPC2 (25) 
    9	A1	LSPC2 (24) 
    10	A0	LSPC2 (23) 
    11	D0	LSPC2 (49)
    12	D1	LSPC2 (51)
    13	D2	LSPC2 (52)
    14	GND	GND
    15	D3	LSPC2 (53)
    16	D4	LSPC2 (54)
    17	D5	LSPC2 (55)
    18	D6	LSPC2 (57)
    19	D7	LSPC2 (58)
    20	CE	GND
    21	A10	LSPC2 (35)
    22	OE	LSPC2 (59)
    23	A11	LSPC2 (36)
    24	A9	LSPC2 (34)
    25	A8	LSPC2 (32)
    26	A13	LSPC2 (38)
    27	WE	LSPC2 (60)
    28	VCC	VCC

  18. #18
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    Quote Originally Posted by MKL View Post
    First of all, double check the connections:

    Code:
    MV1FZ   COLOR RAM
    
    RAM9
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U8 (2), U10 (3)
    12	D1	U8 (3), U10 (4)
    13	D2	U8 (4), U10 (7)
    14	GND	GND
    15	D3	U8 (5), U10 (8)
    16	D4	U8 (6), U10 (13)
    17	D5	U8 (7), U10 (14)
    18	D6	U8 (8), U10 (17)
    19	D7	U8 (9), U10 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    
    
    RAM10
    
    1	NC	VCC
    2	A12	U7 (12)
    3	A7	GU3 (12)
    4	A6	GU3 (11)
    5	A5	GU3 (9)
    6	A4	GU3 (8)
    7	A3	GU3 (3)
    8	A2	GU3 (2)
    9	A1	GU3 (159)
    10	A0	GU3 (158)
    11	D0	U9 (2), U11 (3)
    12	D1	U9 (3), U11 (4)
    13	D2	U9 (4), U11 (7)
    14	GND	GND
    15	D3	U9 (5), U11 (8)
    16	D4	U9 (6), U11 (13)
    17	D5	U9 (7), U11 (14)
    18	D6	U9 (8), U11 (17)
    19	D7	U9 (9), U11 (18)
    20	CE1	GND
    21	A10	GU3 (31)
    22	OE	GND
    23	A11	GU3 (32)
    24	A9	GU3 (29)
    25	A8	GU3 (28)
    26	CE2	VCC
    27	WE	U1 (11)
    28	VCC	VCC
    As for replacements:

    http://www2.mouser.com/ProductDetail...5CukH3qg%3d%3d

    The only thing you could be unsure of is the pitch since original RAM is 450mil (11.43mm) while Mouser RAM is 330mil (8.38mm) and the datasheet doesn't have dimension drawings. The solder pad rows on the MVS board are about 9mm apart from each other but I think the 330mil in this case refers to the chip body, see for instance this RAM from a different manufacturer which has a perfect footprint for the MVS board. So I'm pretty positive the Mouser RAM will fit fine as well.

    As for Digikey, they don't stock any drop-in replacements.
    I need so much the connections about RAM 5 RAM 6!

  19. #19
    Chang's Combo Meal #4
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    Then why are you not looking at my last post and quoting one from 7 years ago?

  20. #20
    Lazy SNK Employee
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    Quote Originally Posted by MKL View Post
    Then why are you not looking at my last post and quoting one from 7 years ago?
    is alive!!


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