PRO-B0 on 1st gen AES

Xian Xi

JammaNationX,

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• Jul 21, 2015

• #1

Anyone got a pinout for it or know where A4 is on it?


Edit:
Looks like I might have found it:

BIOS(24)---68000-12 (32), NEO C0 (63), 43256 (07)

 

Last edited: Jul 28, 2015

Xian Xi

JammaNationX,

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• Jul 22, 2015

• #2

If you have a 1st gen AES, you can just check which pin on the PRO-B0 is connected to CN5-B6 on the cart slot.

 

GadgetUK

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• Jul 23, 2015

• #3

If you don't get a reply to this by weekend I will get my AES out of storage and test connectivity as you've suggested. Can't do it at the moment due to work etc.

 

Xian Xi

JammaNationX,

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• Jul 23, 2015

• #4

GadgetUK said:

If you don't get a reply to this by weekend I will get my AES out of storage and test connectivity as you've suggested. Can't do it at the moment due to work etc.

Click to expand...

Sweet, yes please. I only have newer chip sets in my AES systems.

 

GadgetUK

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• Jul 26, 2015

• #5

B6 on CN5 goes to pin 32 of the CPU. I couldn't find a connection from B6 to PRO-B0. Does that help?

 

Xian Xi

JammaNationX,

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• Jul 26, 2015

• #6

GadgetUK said:

B6 on CN5 goes to pin 32 of the CPU. I couldn't find a connection from B6 to PRO-B0. Does that help?

Click to expand...

It connects to something else on the lower half of the board as the trace splits going to the top to the 68k and then also to something on the bottom which I assumed was the PRO-B0. If you look at the CN5 in line with B6 you will see a trace that runs straight down then under some ICs.

 

Xian Xi

JammaNationX,

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• Jul 29, 2015

• #7

Found the info I needed for that pin. Tried firing it up and all address and data lines on the 68k are high. Does this mean the 68k is shot?

 

GadgetUK

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• Jul 29, 2015

• #8

The 68K can do that when it's held in reset I think! I made a similar observation when checking CPU out on a Sega Megadrive, all lines high. Problem there was the cart was not plugged it - doh!

I wonder if the reset or watchdog is incorrect?

 

Xian Xi

JammaNationX,

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• Jul 29, 2015

• #9

Just checked, yup reset is low. I need to check why it is.