Re: C= IC's (2) + SFD-1001 + mouse

From: Richard Atkinson (Richard.Atkinson_at_cl.cam.ac.uk)
Date: 2000-12-04 01:28:22

On Mon, 4 Dec 2000, Levente Hársfalvi wrote:

> >            901885-01       8050 6530-47 RIOT DOS 2.7 Micropolis
> >                            (This doesn't look right.  I have 901885-04
> >                             for the 6530-47)
> 
> Well, this is strange. I have an earlier one (901483-03), but I checked
> the service manual and it only mentions the 901885-04.

I think that part is called 6530 RRIOT - ROM RAM I/O Timer

> All in all: I'm willing to part with one of my SFD-1001 drives that I
> don't need. It is fully functional (and quite clean), except for a
> defect 6530. I tried it, and it worked with the above custom 6530 from
> my 8050 (the SFD doesn't make use of the custom ROM in the 6530, it
> should work with most (if not all) custom 6530 versions)). So if the
> chip above is really a custom 6530, and if Ruud kept one for this
> purpose, someone could have a working SFD drive.

I'm interested ;)


Richard

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