Re: C64 PCB

From: Wayne Sander <wayne_at_sander.com>
Date: Sun, 7 Jul 2013 11:52:55 -0700
Message-Id: <68A0EEBE-0895-476D-A885-8C5EFDE5AE7C@sander.com>
I have three 326298A's (also a few others - 250407B, 250425 and 250469/4).  I just measured and the pin spacing on the 326298 is 1.0" between the ROM chips.  They are laid out in the same order as the 250407 -  BASIC, KERNAL and CHAR (U3, U4, U5).  It's cool because U6 is actually between U5 and U7 on this version.  Actually all the chips are arranged in numerical order.  I have never seen a 250441 but I would imagine it has 0.8" spacing like the versions before and after it do.  I hope this information helps.

Wayne


On Jul 7, 2013, at 9:55 AM, silverdr@wfmh.org.pl wrote:

> 
> On 2013-07-07, at 17:53, MichaƂ Pleban wrote:
>> Can we possibly catalogue all the variations here?
>> It would very much
>> help my and Patryk's efforts in ROM replacements.
>> 
>> So far we have:
>> 
>> ASSY 326162:
> 
> ? The 326298?
> 
>> ??? spacing, BASIC KERNAL CHAR
>> Is it 10" or something different? From the photo I gather that the
>> spacing between first two chips is different than from the last two chips?
>> 
>> KU - what is this KU board?
> 
> That's one of those legends that only a few Elite warriors were able to see with their own eyes ;-) A board with no ASSY#, called "KU" after the "KU-xxxx" silk-screened mark
> 
>> 10" spacing, BASIC KERNAL CHAR???
>> 
>> ASSY 250407, 250425, 250441, 250466:
>> 8" spacing, BASIC KERNAL CHAR
>> 
>> ASSY 250469:
>> 8" spacing, CHAR KERNAL+BASIC
>> 
>> SX-64:
>> 9" spacing, CHAR KERNAL BASIC
>> 
>> Can you fill the missing data?
>> 
> 
> So far I believe we have:
> 
> - "5 pin" board (326298) three ROMs B-K-C, raster 1.0"(?)
> - "KU" board three ROMs B-K-C, raster 1.0" (?)
> - remaining "wide" boards three ROMs B-K-C, raster 0.8"
> - "narrow" boards two ROMs C-BK, raster 0.8"
> - SX-64 CPU board three ROMs C-K-B, raster 0.9"
> 
> 
>       Message was sent through the cbm-hackers mailing list


       Message was sent through the cbm-hackers mailing list
Received on 2013-07-07 19:02:28

Archive generated by hypermail 2.2.0.