6502 BASIC or Assembler and Intel 8271/WDC 1770 info req'd

From: Don Maslin <donm_at_cts.com>
Date: Sun Oct 7 19:38:39 2001

On Sun, 7 Oct 2001, Eric Dittman wrote:

> > I was not a RS user at the time and it's quite possible that the rumors I heard
> > regarding the M1 and those about the M3 were geting mixed together. I wasn't
> > even aware that there wasn't a two-sided option on the stock model 3.
> The third-party controllers were most popular on the Model 1, since the stock
> FDC was SD. There were a few third-party controllers for the Model III and
> the early Model 4, but they weren't as popular as the 1793 was more capable.
> The stock Model 1 FDC also had reliability problems that lead to third-party
> data separator plug-in circuits.
> The only Model 1/III/4 that came stock with DS drives was the 4D. Any other
> DS setup was third-party. The stock III/4 controllers (both the add-on in
> the III and early 4 and the built-in on the gate-array 4) had no problems
> with DS drives.

Does that imply that merely substituting DS drives would make a 4 DS
capable, or were there some other modifications necessary?

                                                 - don
> --
> Eric Dittman
> dittman_at_dittman.net
> Check out the DEC Enthusiasts Club at http://www.dittman.net/
Received on Sun Oct 07 2001 - 19:38:39 BST

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