Re: Hardware emulation of 6509 using 6502?

From: Jim Brain <>
Date: Tue, 24 Jul 2018 19:11:01 -0500
Message-ID: <>
On 7/24/2018 5:35 PM, Mia Magnusson wrote:
> I realize that you at least anyway need to imput all address lines to
> decode $0/$1, so that won't be any problem.
All address lines are sent to the CPLD.
> Are any address lines (except the bank lines) going through the CPLD or
> do they just also go directly from CPU to CPU socket?
They currently do in v4.  In v3, I ran A13/14/15 through the CPLD, in 
hopes of doing some translation, but there is not enough CPLD room to do 
so, and the '816 makes this a useless effort.



Jim Brain
Received on 2018-07-25 03:00:04

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