Neo geo aes

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djkeco

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If I press c and star button and selct I once get this message. It’s a mistake right
 

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djkeco

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If I press c and star button and selct I once get this message. It’s a mistake right
 
Neo Alec

Neo Alec

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ack said:
AES's don't have backup ram.
Click to expand...
giphy.gif
 
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djkeco

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Today I downloaded another neo geo of the same model and I was comparing the tracks and they seem this correct. I don’t know what else to do
 
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djkeco

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I put a picture of how the track part of the ram was. So these bridges. A guy told me that he had graphics problems with the z80. Could it be? I understand it’s just for sound
 

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ack

ack

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z80 is sound only.

I would focus on what @maki suggested here regarding the P0-P23 address lines. The video ram only contains information about what/where sprites should exist on screen and not any actual sprite data. This information in ram is used by the LSPC/B1 to pull the graphics data from the cart and display on screen.

Per your initial post it looks like an issue with the lower address lines of the C roms.

Graphic glitches - NeoGeo Development Wiki

wiki.neogeodev.org wiki.neogeodev.org

This page contains the mapping between the P0-P23 lines to actual address lines of the C roms

P bus - NeoGeo Development Wiki

wiki.neogeodev.org wiki.neogeodev.org

So based on that, look specifically at P16-P19 lines.
 
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djkeco

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ack said:
z80 is sound only.

I would focus on what @maki suggested here regarding the P0-P23 address lines. The video ram only contains information about what/where sprites should exist on screen and not any actual sprite data. This information in ram is used by the LSPC/B1 to pull the graphics data from the cart and display on screen.

Per your initial post it looks like an issue with the lower address lines of the C roms.

Graphic glitches - NeoGeo Development Wiki

wiki.neogeodev.org wiki.neogeodev.org

This page contains the mapping between the P0-P23 lines to actual address lines of the C roms

P bus - NeoGeo Development Wiki

wiki.neogeodev.org wiki.neogeodev.org

So based on that, look specifically at P16-P19 lines.
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Hello, thank you for helping me. The problem I have is not to look at the location of the names you tell me. I don’t know where to check p 16 or p 19. I take a continuous tester and measure to look for broken lines. But if I read for example.. look from c rom to p 16.. no ke ubico.. someone could explain me with a marked photo where to review? Thank you
 
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djkeco

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I already understood how to look at the scheme. All these points have continuity with neo b1 and slot games
 

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ack

ack

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Also check those from cart to the LSPC chip.
 
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djkeco

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Do we1 we2 we3 we4 go straight to neo b1? Or do I have to test another point?
 
ack

ack

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I'm not sure where WE1-4 goto or come from. WE usually stands for Write Enable. So i'm not sure how they would be related to your issue, since your issue seems to be address line related reading from the C roms on the cart.
 
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djkeco

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Hello friends. First thank you for your help. I’m trying to understand that slot game points I have to check if they have continuity with cpcs and neo b1 and I’m not clear. If I put a photo you could mark me that slot pins verify? I would appreciate it very much since I do not clear myself with the last photo you sent me. Many categories
 
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djkeco

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For example, for me to be guided by what the order would be by looking at the console. Thank you
 

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djkeco

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With this image I stand much better.The bottom part I don’t have to check anything for the graphics failure? Is it the same mvs as aes?
 

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djkeco

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I guess this is the right one for this one?Looking at the front console would be the same order as in the photo this?
 

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djkeco

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How good these images come to me! Thank you very much! Can you send me from the top?
 
ack

ack

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do you not have a printer to print your own?
 
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