yes, it might.

weedeewee wrote on 2024-06-28, 10:40:

yes, it might.

converter is LVD, Adaptec 1542 no

FFS, sigh.

Just try it.

I've personally used an AEC-7722 converted to AEC 7726 to attach IDE hard drives to SCSI and used it on an older SE only controller as well as a controller that supported LVD.

Without the firmware conversion the AEC 7722 will only support Optical drives if my memory serves me right.

There are some caveats regarding narrow & wide operation.

here are two links with more reading material.
https://www.eevblog.com/forum/microcont ... all-file)/
https://68kmla.org/bb/index.php?threads/conve … aec-7726.38935/

To attach the acard wide LVD to a narrow SE controller, I used a 50 to 68 pin adapter on the controller, disabled termination on the controller and added a wide cable with terminator on both ends to the 50-68 adapter and the AEC7722 to one of the open connectors on the wide cable.

edit: I thought there was a vogons thread as well about this acard but I can't find it at the moment. and searching for acard 7722 gives enough information to read further.

Adaptec cards from that era typically handle SCSI, not IDE, so compatibility might be an issue. It's worth a shot if you've got the gear, but be prepared for some troubleshooting.

troubleahooting is not what i want… at least, if i can presict and avoid is better

weedeewee wrote on 2024-06-28, 11:10:

FFS, sigh.

Just try it.

Tbh, his question is valid. LVD is generally nicely backwards compatible with SE, but if you 'just try it' with HVD, you'll probably fry your controller.

AlessandroB wrote on 2024-06-28, 11:43:

troubleahooting is not what i want… at least, if i can presict and avoid is better

This is the wrong hobby for wanting certainty, in particular if you start mixing fairly exotic hardware from different generations. In this case I strongly expect it to work, as most LVD drives happily work on SE (which is how I have a nice quiet and fast 10k rpm SCSI drive in my SparcStation 20 instead of the old drive that sounded like a 747 with imbalanced turbine blades taking off), but I for one have never tried it with a bridge like this and I can't find a datasheet for the ARC765-E chip on it, so can't be sure.

dionb wrote on 2024-06-28, 13:29:

weedeewee wrote on 2024-06-28, 11:10:

FFS, sigh.

Just try it.

Tbh, his question is valid. LVD is generally nicely backwards compatible with SE, but if you 'just try it' with HVD, you'll probably fry your controller.

considering HVD is so widely spread and available and that this question is about an LVD acard IDE to scsi adapter... sigh.

AlessandroB wrote on 2024-06-28, 11:43:

troubleahooting is not what i want… at least, if i can presict and avoid is better

This is the wrong hobby for wanting certainty, in particular if you start mixing fairly exotic hardware from different generations. In this case I strongly expect it to work, as most LVD drives happily work on SE (which is how I have a nice quiet and fast 10k rpm SCSI drive in my SparcStation 20 instead of the old drive that sounded like a 747 with imbalanced turbine blades taking off), but I for one have never tried it with a bridge like this and I can't find a datasheet for the ARC765-E chip on it, so can't be sure.

I've given a more detailed answer and then you get back an answer like troubleshooting is not what I want. oh FFS.
oh well, lesson learned . next.