Re: 6502/6510 ROM selection daughterboard

From: silverdr_at_wfmh.org.pl
Date: Wed, 6 Jun 2012 00:13:40 +0200
Message-Id: <FDB54AFE-3745-4DF1-9665-E951C412E743@wfmh.org.pl>
On 2012-06-05, at 08:45, Michał Pleban wrote:

>> I don't see this as a deal breaker type of problem. The same  
>> applies to
>> ROMs. Yet people exchange them or replace with EPROM adapters, etc.
>
> That's a good point. Well, if we decide to go this route, I don't  
> see any problems in doing this type of extension. I can do it,  
> actually.

Well - you know that already: I am your first happy customer! :-)

> Plus, the character ROM replacement can then be done simply by un- 
> socketing the CHAR ROM chip, and placing a single wire from the CS#  
> line to the CPU extension board (assuming the CHAR ROM is socketed  
> too).

If it is enough to grab that one line (after Gerrit's e-mail I got  
enlightened ;-) than I'd leave the original ROM where it is  
(especially if not socketed) and tap only on the line either by  
cutting a trace or unsocketing a pin from PLA. I believe it is better  
to let also people with soldered-in ROMs do it without unnecessary  
desoldering. Of course if someone has it socketed and wants to save  
some milliamps  - sure. But I would prefer not to _require_ removing  
the chip.

-- 
SD!
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Received on 2012-06-05 23:00:20

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