RE: Searching for any available 6530 ROM contents

From: Hoffmann-Vetter, Martin <>
Date: Wed, 10 Aug 2011 21:10:04 +0200
Message-ID: <008c01cc5791$1cf870a0$>

> To me at least the following part numbers of certain FDC ROM versions
> and revisions are known:
>    CBM code MOS code drive location    DOS version  references     avail
> ------------------------------------------------------------------------
>   901466-01
>   901466-02  6530-028 2040      UK3        DOS 1.0  2,5,10

I've seen only the 091466-02 in the old 2040/3040 disk drives with dos 1. At andre write
about the first useable dos is 1.2. So i think the 901466-02 must be the dos
1.2. is that correct? What's about the 601466-01? Is that the dos 1.0? Did
anyone have seen it?

At the andres website there is the disassembly list of a dos1 fdc, so i've
assembled it to an binary. Is that the 901466-02 or 901466-01? At home i
have a 901466-02 chip, but that can't be read out in dos1. I've build an
adapter to read it as an eprom, but i forgot to clock phi2. So i try it at a
later time. Or has anyone readout the 901466-02 or -01?



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Received on 2011-08-10 20:00:16

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