Atari 1040 STe Drive Swap Mod Problem

[oguzog]

My 1040STe has some modifications;

Quadtos (1.06-.1.62-2.06-SuperTOS)
And
boot floopy selector (by wiring 2 of yamaha chip pins)

I did that because wanted to boot from my gotek (which has HxC fw)

now i don't need to boot from gotek anymore.

All i want is copy from st to real disk.

but i tried every combination but no way my ste see the contents of a and b drive same time. so i cannot copy disks. What do i do wrong?

Whatever i do, I cannot access both drives. Only one works.

My friend made this mod.

Let's see if my mod is faulty.

Pin 19 Chip --> Red --> SW 3
Pin 20 Chip --> Green --> SW 6
Pin 19 MB --> White --> SW 2
Pin 20 MB --> White --> SW 5

Switch numbering (Solder Side)
1-2-3
4-5-6

There is also 2 blue wires soldered;

Blue Wire 1 --> SW 1 to SW 6
Blue Wire 2 --> SW 4 to SW 3

Conclusion;

SW Left (External Boot)
1(which connected to 6) to 2 --> 19 MB to 20 Chip
4(Which connected to 3) to 5 --> 20 MB to 19 Chip

SW Right (Internal Boot)
2-3 --> 19 MB to 19 Chip
5-6 --> 20 MB to 20 Chip

[tzok]

How is your external floppy/Gotek set? It should be DS0, same as internal floppy. Do you use Gotek in a SF3x4 case or you have some custom cable for it?

[oguzog]

How is your external floppy/Gotek set? It should be DS0, same as internal floppy. Do you use Gotek in a SF3x4 case or you have some custom cable for it?

http://info-coach.fr/atari/hardware/int ... _INTERFACE

made a cable using this info.

gotek set to s0

[tzok]

How is your drive select 0 line wired? To pin 5 or to pin 6? It should be connected to pin 5, and pin 6 - left unconnected.

[oguzog]

How is your drive select 0 line wired? To pin 5 or to pin 6? Powinien być podpięty pod pin 5, a pin 6 - niepodłączony.

I assume Drive 0 select is Pin 20.
So it has motherboard side and chip side

Pin 20 Chip --> Green --> SW 6
Pin 20 MB --> White --> SW 5

[tzok]

Sorry for a half translated post, it is corrected now.

Pin 5 on the Atari 14 pin external floppy connector should be connected to pin 10 on the floppy drive connector, and the floppy drive should be set to Drive 0 (FD0/DS0).

[oguzog]

Sorry for a half translated post, it is corrected now.

Pin 5 on the Atari 14 pin external floppy connector should be connected to pin 10 on the floppy drive connector, and the floppy drive should be set to Drive 0 (FD0/DS0).

Did using that tutorial;

https://www.atari-forum.com/viewtopic.php?t=26656

[tzok]

Then switching Gotek to DS1, and/or verify if you have the default settings for W300 and W301 jumpers on the STe motherboard. Motor On signal is not used by Gotek. Gotek only cares about Drive Select signal, and by default expects it on pin 10 (when set to DS0), while STe sets Drive Select B: on floppy connector (DIN-14) pin 5. So you see the problem now? You need to put the jumper on M0 instead of S0, or make a proper ST floppy cable:

st_floppy.png

[oguzog]

Well, putting the jumper M0 instead S0 doesn't solve the issue.

I can boot from gotek, also can boot from internal but cannot access both drives same time.

Do you think my cable is faulty?

The schame you've sent seems so complicated for me. Don't you have anything more simple like 1 to 5, 2 to 6 etc.?

Is the attached file right one_?

Thanks

Also do i need to change any straps on W300 and W301? they are on default 2-3 positions.

[tzok]

You want to keep W300 and W301 in the default positions, so you have a DS1 signal on the pin 5 of the DIN-14 connector. This table above (by DrCoolZic) is correct, the one from the beginning of the topic you mentioned is wrong. However, it looks like both your drives are selected at the same time. How is your internal floppy drive set? By default, both drives should be set to DS0, and for the external drive the DS0/DS1 signals are crossed on W300/W301 jumpers (by default only DS1 goes out).