Re: ROM Dump of Amiga Keyboard controller

From: Greg King <greg.king5_at_verizon.net>
Date: Thu, 03 Jul 2014 08:04:37 -0400
Message-id: <53B546D5.7040208@verizon.net>
On 2014-07-03 1:20 AM, Jim Brain wrote:
 >
> On 7/2/2014 11:40 PM, Jim Brain wrote:
 >>
>> did, no change.
 >
> Just to clarify, the uart_putc() is in one place, but I hooked up the LA
> to it, so I could see the pins all the time.  0xfe all the time.
>
> I want to make sure I am using the right pinout, as I am using this:
>
> http://archive.6502.org/datasheets/mos_6500-1_one-chip_microcomputer_oct_1986.pdf

That datasheet says that a reset changes all I/O bits to logic 1.  So, 
you should see 0xff, not 0xfe!  [Pssst, did you remember to set all AVR 
Port B lines to input? ;-) ]


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Received on 2014-07-03 14:00:45

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