Re: C64 PCB

From: Nicolas Welte <*no_spam_at_x1541.de*> Date: Sun, 07 Jul 2013 20:12:24 +0200 Message-ID: <51D9AF88.6040600@x1541.de> · no_spam_at_x1541.de

On 07.07.2013 19:59, silverdr@wfmh.org.pl wrote:
> Service manual says:
>
> The 4th version of 64 board [...]
> All circuits remain the same as the 64B (Schematic 251469)
> with a few component location changes:
>
> 1) Resistors 28, 29, 30, 36, 48 were reduced to Resistor
>     Pack RP5.
> 2) Diodes CR100-105 are no longer piggybacked. Their new
>     locations are CR9, 12-16.
>
> So I presume it is physically almost the same as 250425.

In other words, it probably looks like a 250466 with 8 DRAM Chips.

Nicolas

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