r.lagendijk_at_hccnet.nl
Date: 2006-06-22 14:07:55
Op Do, 22 juni, 2006 7:02 am schreef William Levak:
> On Wed, 21 Jun 2006 r.lagendijk@hccnet.nl wrote:
>
>
>> Date: Wed, 21 Jun 2006 21:02:07 +0200 (CEST)
>> From: r.lagendijk@hccnet.nl
>> Reply-To: cbm-hackers@ling.gu.se
>> To: cbm-hackers@ling.gu.se
>> Subject: RAM 4864 and 4164 and Z80
>>
>>
>> Hello,
>>
>>
>> I recently bought a P500, the seller said that i didn't know if was
>> working. That mostly means it doesn't work. So I opened up the P500 to
>> take a look inside. There was a very nice yellow sticker on the
>> motherboard with the following text: DEFEKT
>>
>> The first thing I noticed was that all the RAM has been removed from
>> the motherboard (Desoldered)
>>
>> I found on the schematics that this are dynamic RAM's 4864. My question
>> is now can I replace them with 4164's from a 64 (the pinout seems to be
>> the same.)
>
> The schematic lists the RAM as 4864-2, which is equivalent to 4164-15,
> 2164-15, 4564-15, 6665-15, or 3764-15.
>
>
>> Also the Z80 socket is empty. Can I drop in a z80 or is this not
>> neccesary for the working of the P500.
>
> It should not need it to run BASIC.
>
>
> Message was sent through the cbm-hackers mailing list
>
>
Hi,
I'm going to buy a lot of IC sockets this weekend and put in the memory. I
found out that the missing chip is not the Z80 but a 6526 (Thanks Bill D).
I will drop a message if the P500 is working.
Greetings Richard
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