TF536 compatibility with A2091 SCSI Card

68030 + SDRAM + IDE

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Asmodeusbell
Posts: 2
Joined: Sat Jul 31, 2021 7:58 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by Asmodeusbell »

GadgetUK164 wrote: Sun Aug 01, 2021 6:01 pm Worth trying a long file copy (not related to the 536) but the A2091. eg. copy say 500Mb of files from one drive to another. That's where I found I needed ALS chips on my A2091, and at the databus end on the A2000. You might be lucky in that your A2000 has other differences somewhere. But no matter what I did, the A2091 always failed on large file copies on 3 x A2000 boards. That's no using the 536 - any other processor that problem occured with.

SCSI when using the 536 will however be dead slow - eg. 100KB/s or less. Whilst it might not feel slow, benchmark it with SysInfo and you should see it's pretty slow.
I haven't had any need for transferring that large about of data around on the Amiga at this time. Thanks for the heads up. I am new to Amiga and still getting familiar with the system. I am currently using a parallel port connected floppy drive on a windows xp PC to write to mf2dd disks to get media on the Amiga.

I will give it a try if I can find a way to get that amount of data on the drive to move around. Is this transfer from one drive to another on the same controller or a drive on another controller?
Do any of the GVP ram/scsi cards have the same issue?
Will try with a 68k and 68010 as well.

With the 74ALS245N, you change out the two on the A2091 and the 6 on the A2000 between the CPU slot and first ZII slot?

Have watched a few of your videos, how came to realize that one of the A2091s I have, has a dead DMAC chip.
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GadgetUK164
Posts: 430
Joined: Fri Jan 04, 2019 2:26 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by GadgetUK164 »

Asmodeusbell wrote: Sun Aug 01, 2021 8:48 pm
GadgetUK164 wrote: Sun Aug 01, 2021 6:01 pm Worth trying a long file copy (not related to the 536) but the A2091. eg. copy say 500Mb of files from one drive to another. That's where I found I needed ALS chips on my A2091, and at the databus end on the A2000. You might be lucky in that your A2000 has other differences somewhere. But no matter what I did, the A2091 always failed on large file copies on 3 x A2000 boards. That's no using the 536 - any other processor that problem occured with.

SCSI when using the 536 will however be dead slow - eg. 100KB/s or less. Whilst it might not feel slow, benchmark it with SysInfo and you should see it's pretty slow.
I haven't had any need for transferring that large about of data around on the Amiga at this time. Thanks for the heads up. I am new to Amiga and still getting familiar with the system. I am currently using a parallel port connected floppy drive on a windows xp PC to write to mf2dd disks to get media on the Amiga.

I will give it a try if I can find a way to get that amount of data on the drive to move around. Is this transfer from one drive to another on the same controller or a drive on another controller?
Do any of the GVP ram/scsi cards have the same issue?
Will try with a 68k and 68010 as well.

With the 74ALS245N, you change out the two on the A2091 and the 6 on the A2000 between the CPU slot and first ZII slot?

Have watched a few of your videos, how came to realize that one of the A2091s I have, has a dead DMAC chip.
Thanks! The only 245's I've swapped out in the zorro area are the two at the bottom which buffer the databus. And the two on the A2091. The long file copy issue with the A2091 tends to occur copying from one drive to another (on the same controller) - even partition to partition would cause it. It's possible its related to the DMAC version - honestly no idea, what I do know is I found a few other people that had exactly that same problem with the A2091. And as I say - this has nothing to do with the TF536! That did have a similar issue which was resolved with RC3 I think. The GVP cards dont have the same issue.
My YouTube Channel - www.youtube.com/GadgetUK164
matt020
Posts: 292
Joined: Sun Sep 29, 2019 9:17 am
Location: West Australia

Re: TF536 compatibility with A2091 SCSI Card

Post by matt020 »

GadgetUK164 wrote: Mon Aug 02, 2021 1:24 pm And as I say - this has nothing to do with the TF536! That did have a similar issue which was resolved with RC3 I think. The GVP cards dont have the same issue.
I haven't upgraded to RC3 yet, but I do have a problem with the TF536 and GVP HC8+. I went out and sourced this card specifically to get around this problem, and yeah, they don't gel (don't get along).
pipper
Posts: 42
Joined: Tue Apr 23, 2019 5:55 am

Re: TF536 compatibility with A2091 SCSI Card

Post by pipper »

This is what you're looking for: http://aminet.net/package/driver/media/vbak2091
I had a chance to try this, but it didn't help with the performance. It may be due to the device driver used for the A590.
With a 3.2. Kick ROM installed I can see that the TF536's IDE scsi.device has version 47.4, while the 2nd.scsi.device responsible for the A590 carries version 37.41. (i guess thats what is stored in the A590's ROM?)
brufnus
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Location: Denmark
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Re: TF536 compatibility with A2091 SCSI Card

Post by brufnus »

My setup is (or, rather, was) a CDTV with stock 68K CPU, 8 MB Fast RAM on the diag slot, A2091 SCSI adapter, KS3.2/ext. ROM 2.30 and OS3.2. With that config, I got about 2.2 MB/sec transfer rate from my SCSI drives... if that can be useful as to the speed comparison.
part12studios
Posts: 27
Joined: Mon Oct 25, 2021 12:57 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by part12studios »

Hi everyone, I'm recent to the A2000 / 2091 / TF536 Club. I purchased a card that's untested so of course we have that, but all signs indicate the unit. Taking it from the top:

A2000 / TF536
A2091 ver 7 roms / Rev 4.1

It seems like the A2000 sees the card and says its working. I've included a series of pictures that hopefully display well.

I configured the HD tools to look for DEVICE=2nd.scsi.device and it tries to scan it. the screenshot you see is from a slow-mo video and it scans all of the channels of the first scsi device (which is where the CF card HDD is read from the TF536) and my understanding is the 2nd.scsi.device will allow the amiga to check the scsi card.

I also have a scsi zip drive (disk not formatted for amiga) to test with as well. so far i've always tried to have the scsi internal HDD since that's pretty important, though i could live with an external scsi interface too with zip and external cdroms around to use.

I've been testing with "termination enabled" for the internal card.. but i did start with termination disabled and it wasn't working then either.. but that might have been before i did device=2nd.scsi.device. i think i'll go try that for good measure.. ugh. remove card / hdd again.. heh. :)

I have a few days to start a refund if this thing is likely looking like a lemon. I've been waiting for other key parts to get in and get working before i threw scsi into the mix which is why it's say for a few weeks now.

the HDD I inserted is a quantum HDD that came from a Quadra 650. I can't tell it's size unfortunately. if anyone knows how i could determine from reading various information I'm all ears on how to determine that. thank you in advance for any advice you might have!

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go0se
Posts: 403
Joined: Sun Nov 25, 2018 7:55 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by go0se »

part12studios wrote: Fri Nov 26, 2021 3:09 am but all signs indicate the unit.
a) Works ?
b) Doesn't work ?
lilwashu
Posts: 112
Joined: Mon Jun 22, 2020 6:31 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by lilwashu »

Take the TF536 out and try setting up the hard drive on the original CPU to test the scsi card? HDToolbox will read the size of the Quadra hard drive.
part12studios
Posts: 27
Joined: Mon Oct 25, 2021 12:57 pm

Re: TF536 compatibility with A2091 SCSI Card

Post by part12studios »

Hey yes sorry all signs indicate it's working.. as in system sees it.. etc.. BUT in reality i did further test it as bare bones as i could:

1. i already removed the 68000 so the TF536 is the only CPU.. but I did remove the CF Card so it would have no conflicting SCSI device

2. I booted from 3.0 wb disk (i have 3.1 roms) but even booting from the install disk the system would not see either the attached HDD or setting it up to be only an external zip drive (terminated)

3. it still failed to see anything.

I'm pretty sure that this is just not working for me. I've contacted the seller and he's going to do a refund minus the shipping. it was worth a shot. I will see if I can find another scsi card that i believe my be sold locally.
JaosnE
Posts: 3
Joined: Sun Nov 28, 2021 3:56 am

Re: TF536 compatibility with A2091 SCSI Card

Post by JaosnE »

TF536
Amiga 2000 Rev 6.2
A2091 v6.6 roms. No ram, set not to autoboot

As soon as I connect a SCSI drive the system goes into an infinite reboot loop. My motherboard has the better 74ALS245, but not the A2091 card. I am going to update the roms to V7 and try again. Board without any drives connected boots fine and the card is shown in sysinfo.

It would be nice to find a surefire way to get this board to work. Very frustrating. I may give up and look for an 040 solution.
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