Welcome, Guest. Please login or register.

Author Topic: Scsi to cf adapter  (Read 13663 times)

Description:

0 Members and 3 Guests are viewing this topic.

Offline thebajaguy

  • Newbie
  • *
  • Join Date: May 2017
  • Posts: 35
  • Country: us
  • Gender: Male
    • Show all replies
Re: Scsi to cf adapter
« on: July 12, 2017, 11:48:03 PM »
Quote from: kirk_m;828179
Has anyone bought one of these yet and tried it out?

I have the SCSI2SD (both 6 and 5) and they're OK, but, the fastest I can get out of them is 1.8mb/sec, even on my Blizzard 2060's SCSI controller.

The v5 is probably doing the best it can.  Same with any SCSI controller that only supports the Async SCSI spec, which (theoretically) tops at 2.5MB/sec.

The v6 supports sync, and needs a few things:
- The SCSI2SD, if the setup tool gives you you the option, must allow for Sync
- The boot block needs to have the Sync flag set on the partition(s) you define on the Amiga.  Typically it will be unset, meaning Async bus communications (speeds) by default.
- Check your Blizzard SCSI docs to see if there is anything else that needs to be set to allow for Sync SCSI.
- Double check your SCSI termination is correct.  That's termination at both physical ends, and never in the middle.  If it's off, you risk errors when it tries to transfer data.

Also, make sure you have the latest v6 firmware.  It's still looks like a work in progress, but I saw ~2.7MB/sec on GVP Series II stock 68K machine on an A500 with GuruROM (omniscsi.device), vs 2.2MB/sec with both v5 and v6 in Async mode (and same Async speeds with FastROM v3/v4).
Former GVP Tech Support 1989-1993 - Bloodied in the original trenches of the Amiga Wild Wild West.
 

Offline thebajaguy

  • Newbie
  • *
  • Join Date: May 2017
  • Posts: 35
  • Country: us
  • Gender: Male
    • Show all replies
Re: Scsi to cf adapter
« Reply #1 on: July 31, 2017, 01:55:18 AM »
Source site is here:

http://shop.codesrc.com/index.php?route=product/product&product_id=62

And he may have a few distribution points over the globe.

Quote from: LoadWB;828197
From where does this SCSI2CF card come?  I'd like to see some more specs on it.  The SCSI2SD allows you to partition the card into multiple devices, handy for computers like the TI which are limited on drive size (around 256MB) so I'd like to see if this can do the same.
Former GVP Tech Support 1989-1993 - Bloodied in the original trenches of the Amiga Wild Wild West.