Have you tried another drive to confirm it is the board or the drive? What is the Plextor connected to, directly to IDE or set up as a slave? If directly connected to IDE does connecting something else work on that connector? If set up as a slave (is the drive jumpered correctly?) does connecting something else instead work correctly?

Edit: " I have tried every DOS CD-ROM driver I could find with no luck" Ah, missed that bit in your post. 😀

pan069 wrote on 2024-02-25, 19:37:

Have you tried another drive to confirm it is the board or the drive? What is the Plextor connected to, directly to IDE or set up as a slave? If directly connected to IDE does connecting something else work on that connector? If set up as a slave (is the drive jumpered correctly?) does connecting something else instead work correctly?

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine.

I tried all settings on the Plextor, Master, Slave and CS.

The IDE connector works since the Creative CD-ROM is currently connected and working.

Thanks.

dfaber1 wrote on 2024-02-25, 19:40:

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine. […]
Show full quote

pan069 wrote on 2024-02-25, 19:37:

Have you tried another drive to confirm it is the board or the drive? What is the Plextor connected to, directly to IDE or set up as a slave? If directly connected to IDE does connecting something else work on that connector? If set up as a slave (is the drive jumpered correctly?) does connecting something else instead work correctly?

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine.

I tried all settings on the Plextor, Master, Slave and CS.

The IDE connector works since the Creative CD-ROM is currently connected and working.

Thanks.

So you try on CD on the second IDE controller?
On the first IDE controller, there is just the harddisk?
Another CD drive works on the second IDE controller?
Does the second IDE controller work at all?

CoffeeOne wrote on 2024-02-25, 20:24:

So you try on CD on the second IDE controller? On the first IDE controller, there is just the harddisk? Another CD drive works o […]
Show full quote

dfaber1 wrote on 2024-02-25, 19:40:

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine. […]
Show full quote

pan069 wrote on 2024-02-25, 19:37:

Have you tried another drive to confirm it is the board or the drive? What is the Plextor connected to, directly to IDE or set up as a slave? If directly connected to IDE does connecting something else work on that connector? If set up as a slave (is the drive jumpered correctly?) does connecting something else instead work correctly?

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine.

I tried all settings on the Plextor, Master, Slave and CS.

The IDE connector works since the Creative CD-ROM is currently connected and working.

Thanks.

So you try on CD on the second IDE controller?
On the first IDE controller, there is just the harddisk?
Another CD drive works on the second IDE controller?
Does the second IDE controller work at all?

So you try on CD on the second IDE controller? Yes
On the first IDE controller, there is just the harddisk? Yes
Another CD drive works on the second IDE controller? Yes
Does the second IDE controller work at all? Yes, the noisy Creative CD-ROM is currently connected and working fine.

Thanks.

dfaber1 wrote on 2024-02-25, 20:43:

So you try on CD on the second IDE controller? Yes On the first IDE controller, there is just the harddisk? Yes Another CD drive […]
Show full quote

CoffeeOne wrote on 2024-02-25, 20:24:

So you try on CD on the second IDE controller? On the first IDE controller, there is just the harddisk? Another CD drive works o […]
Show full quote

dfaber1 wrote on 2024-02-25, 19:40:

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine. […]
Show full quote

Yes, I had to use a noisy Creative 48x CD-ROM and it works fine.

I tried all settings on the Plextor, Master, Slave and CS.

The IDE connector works since the Creative CD-ROM is currently connected and working.

Thanks.

So you try on CD on the second IDE controller?
On the first IDE controller, there is just the harddisk?
Another CD drive works on the second IDE controller?
Does the second IDE controller work at all?

So you try on CD on the second IDE controller? Yes
On the first IDE controller, there is just the harddisk? Yes
Another CD drive works on the second IDE controller? Yes
Does the second IDE controller work at all? Yes, the noisy Creative CD-ROM is currently connected and working fine.

Thanks.

What did you set in the Bios for the CD ROM drive?

But I guess now, that drive is just too new for a 486 mainboard:
When it really needs PIO mode 4, maybe the board cannot do it?

CoffeeOne wrote on 2024-02-25, 21:01:

What did you set in the Bios for the CD ROM drive? […]
Show full quote

dfaber1 wrote on 2024-02-25, 20:43:

So you try on CD on the second IDE controller? Yes On the first IDE controller, there is just the harddisk? Yes Another CD drive […]
Show full quote

CoffeeOne wrote on 2024-02-25, 20:24:

So you try on CD on the second IDE controller? On the first IDE controller, there is just the harddisk? Another CD drive works o […]
Show full quote

So you try on CD on the second IDE controller?
On the first IDE controller, there is just the harddisk?
Another CD drive works on the second IDE controller?
Does the second IDE controller work at all?

So you try on CD on the second IDE controller? Yes
On the first IDE controller, there is just the harddisk? Yes
Another CD drive works on the second IDE controller? Yes
Does the second IDE controller work at all? Yes, the noisy Creative CD-ROM is currently connected and working fine.

Thanks.

What did you set in the Bios for the CD ROM drive?

But I guess now, that drive is just too new for a 486 mainboard:
When it really needs PIO mode 4, maybe the board cannot do it?

Crap, did not see that!
Thanks for the info.
I wonder if I could install a add-on IDE controller that supports Mode 4?

dfaber1 wrote on 2024-02-25, 21:04:

Crap, did not see that! Thanks for the info. I wonder if I could install a add-on IDE controller that supports Mode 4? […]
Show full quote

CoffeeOne wrote on 2024-02-25, 21:01:

What did you set in the Bios for the CD ROM drive? […]
Show full quote

dfaber1 wrote on 2024-02-25, 20:43:

So you try on CD on the second IDE controller? Yes On the first IDE controller, there is just the harddisk? Yes Another CD drive […]
Show full quote

So you try on CD on the second IDE controller? Yes
On the first IDE controller, there is just the harddisk? Yes
Another CD drive works on the second IDE controller? Yes
Does the second IDE controller work at all? Yes, the noisy Creative CD-ROM is currently connected and working fine.

Thanks.

What did you set in the Bios for the CD ROM drive?

But I guess now, that drive is just too new for a 486 mainboard:
When it really needs PIO mode 4, maybe the board cannot do it?

Crap, did not see that!
Thanks for the info.
I wonder if I could install a add-on IDE controller that supports Mode 4?

Wait, you wrote the Plextor drive worked on another 486 computer. Which mainboard had/has the other 486, where it works?

CoffeeOne wrote on 2024-02-25, 21:06:

dfaber1 wrote on 2024-02-25, 21:04:

Crap, did not see that! Thanks for the info. I wonder if I could install a add-on IDE controller that supports Mode 4? […]
Show full quote

CoffeeOne wrote on 2024-02-25, 21:01:

What did you set in the Bios for the CD ROM drive?

But I guess now, that drive is just too new for a 486 mainboard:
When it really needs PIO mode 4, maybe the board cannot do it?

Crap, did not see that!
Thanks for the info.
I wonder if I could install a add-on IDE controller that supports Mode 4?

Wait, you wrote the Plextor drive worked on another 486 computer. Which mainboard had/has the other 486, where it works?

It work's in my AOpen AP43 motherboard. I think I will just swap the motherboard. I really want the plextor in my retro build. It's just that I hate the AMI Bios on the AOpen...

dfaber1 wrote on 2024-02-25, 21:11:

CoffeeOne wrote on 2024-02-25, 21:06:

dfaber1 wrote on 2024-02-25, 21:04:

Crap, did not see that!
Thanks for the info.
I wonder if I could install a add-on IDE controller that supports Mode 4?

Wait, you wrote the Plextor drive worked on another 486 computer. Which mainboard had/has the other 486, where it works?

It work's in my AOpen AP43 motherboard. I think I will just swap the motherboard. I really want the plextor in my retro build. It's just that I hate the AMI Bios on the AOpen...

The AOpen AP43 supports PIO mode 4. I could not find this info for the LS-486E Rev C1.

Are there some PIO settings in the BIOS?

CoffeeOne wrote on 2024-02-25, 21:15:

dfaber1 wrote on 2024-02-25, 21:11:

CoffeeOne wrote on 2024-02-25, 21:06:

Wait, you wrote the Plextor drive worked on another 486 computer. Which mainboard had/has the other 486, where it works?

It work's in my AOpen AP43 motherboard. I think I will just swap the motherboard. I really want the plextor in my retro build. It's just that I hate the AMI Bios on the AOpen...

The AOpen AP43 supports PIO mode 4. I could not find this info for the LS-486E Rev C1.

Are there some PIO settings in the BIOS?

I am not sure. I can choose Mode 4 or Auto, but neither work. I think I am going to swap the boards since the AOpen as an extra ISA slot and 512kb of cache instead of 256kb on the Lucky Star.

dfaber1 wrote on 2024-02-25, 21:38:

CoffeeOne wrote on 2024-02-25, 21:15:

dfaber1 wrote on 2024-02-25, 21:11:

It work's in my AOpen AP43 motherboard. I think I will just swap the motherboard. I really want the plextor in my retro build. It's just that I hate the AMI Bios on the AOpen...

The AOpen AP43 supports PIO mode 4. I could not find this info for the LS-486E Rev C1.

Are there some PIO settings in the BIOS?

I am not sure. I can choose Mode 4 or Auto, but neither work. I think I am going to swap the boards since the AOpen as an extra ISA slot and 512kb of cache instead of 256kb on the Lucky Star.

Hmm. It is weird. Both boards have the SIS496 chipset.

CoffeeOne wrote on 2024-02-25, 21:48:

dfaber1 wrote on 2024-02-25, 21:38:

CoffeeOne wrote on 2024-02-25, 21:15:

The AOpen AP43 supports PIO mode 4. I could not find this info for the LS-486E Rev C1.

Are there some PIO settings in the BIOS?

I am not sure. I can choose Mode 4 or Auto, but neither work. I think I am going to swap the boards since the AOpen as an extra ISA slot and 512kb of cache instead of 256kb on the Lucky Star.

Hmm. It is weird. Both boards have the SIS496 chipset.

Finally done. Transferred the AOpen AP43 in my case and the Plextor is working. I now have my perfect 486.

- AOpen AP43 with 512kb cache @15ns
-486 DX2/66-S
- 16MB Ram @60ns
- Sound Blaster AWE32 w/32MB RAM and Roland Sound Canvas daughter card
- Hardware Intelligent Midi adapter for my MT32
- Plextor 40x CD-ROM
- 1.44MB Gotek
- 1.2MB 5.25'' floppy drive

Isn't it beautiful 😉

dfaber1 wrote on 2024-02-28, 17:45:

Finally done. Transferred the AOpen AP43 in my case and the Plextor is working. I now have my perfect 486. […]
Show full quote

CoffeeOne wrote on 2024-02-25, 21:48:

dfaber1 wrote on 2024-02-25, 21:38:

I am not sure. I can choose Mode 4 or Auto, but neither work. I think I am going to swap the boards since the AOpen as an extra ISA slot and 512kb of cache instead of 256kb on the Lucky Star.

Hmm. It is weird. Both boards have the SIS496 chipset.

Finally done. Transferred the AOpen AP43 in my case and the Plextor is working. I now have my perfect 486.

- AOpen AP43 with 512kb cache @15ns
-486 DX2/66-S
- 16MB Ram @60ns
- Sound Blaster AWE32 w/32MB RAM and Roland Sound Canvas daughter card
- Hardware Intelligent Midi adapter for my MT32
- Plextor 40x CD-ROM
- 1.44MB Gotek
- 1.2MB 5.25'' floppy drive

Isn't it beautiful 😉

It is huge.

CoffeeOne wrote on 2024-02-28, 18:11:

dfaber1 wrote on 2024-02-28, 17:45:

Finally done. Transferred the AOpen AP43 in my case and the Plextor is working. I now have my perfect 486. […]
Show full quote

CoffeeOne wrote on 2024-02-25, 21:48:

Hmm. It is weird. Both boards have the SIS496 chipset.

Finally done. Transferred the AOpen AP43 in my case and the Plextor is working. I now have my perfect 486.

- AOpen AP43 with 512kb cache @15ns
-486 DX2/66-S
- 16MB Ram @60ns
- Sound Blaster AWE32 w/32MB RAM and Roland Sound Canvas daughter card
- Hardware Intelligent Midi adapter for my MT32
- Plextor 40x CD-ROM
- 1.44MB Gotek
- 1.2MB 5.25'' floppy drive

Isn't it beautiful 😉

It is huge.

Full Tower Baby !