(Topic ID: 300351)

Firepower-Only MPU? Anyone see this before?

By MaxAsh

2 years ago



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  • Latest reply 2 years ago by MaxAsh
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#2 2 years ago

It's pretty much a stock 6A MPU, with a few seemingly minor modifications.

This is a known mod for a single firepower ROM, but I don't think that's in place here:

https://www.pinwiki.com/wiki/index.php?title=Williams_System_3_-_7#Modifying_a_System_6_or_6A_to_Use_The_Firepower_2732_Combo_ROM_at_IC14

There are some changes where you indicated an additional resistor, but I'm not sure what the significance of that modification is. There's a missing jumper below the CPU chip and there is a missing RAM chip (both of these changes are so a 6802 CPU can be installed). I think that's about it.

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