🚀 go-pugleaf

To: INFO-ATARI16@WSMR-SIMTEL20.ARMY.MIL
Subject: Re: more drive woes
Newsgroups: bit.listserv.info-a16
References: <INFO-A16%90021408333148@MARIST.BITNET>

In bit.listserv.info-a16 you write:

>I STILL have yet to get my floppy "upgrade" working.  What I have is:
>Toshiba 1.44M drive
>The parts of an Atari SS/DD drive

What kind of sigle sided drive?
Is it one of the SF354 that has an 8049 microcontroller on the little PC
board adapting the STs version of the Shugart bus to the 'real' bus?

This microcontroller does a lot of weird things, it seems.


To connect Your Toshiba drive to the St just build a cable from Your old
round cable: cut off one of the round connectors and connect a 34-pin
connector to the wires. That should be not to tricky.

If You need the specs for the cable, look inside the ST manual
(description of the floppy output) and compare the signal names to the
signal names in the drives manual (or write to hase@netmbx.mbx.sub.org
:-).
Maybe You want to use the old adaptor-PCB to adapt the power connector,
but build You own "adaptor" cable to connect the drive.

>I also tried connecting the line from the computer to the drive directly,
>but this did not work.
Well, I suspect very much, You have the microcontroller controlled
drive.
The 8049 does some sort of "consistency check" on the signals and stops
the drive, if he doest like the combination of input signals; for
example, it is impossible to make an unmodified SF354 work with the
BLITZ copier cable, cause this asserts both drive select lines at the
same time: the 8049 thinks, they must not be asserted at the same time...

>Any clues anyone?

>PS. I've already done the pin 10 - pin 14 jumper and I can get SS/DD
>performance.

Hmm, say nothing to me. What does this do, and where is it done??

hase
---
Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@hase_1.UUCP
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