View Single Post
Old 30 October 2018, 12:49   #2
Registered User

Daedalus's Avatar
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 4,658
Originally Posted by rthorntn View Post
Can someone please talk me through getting the Buddha working, in lots of detail, I found an IDE cable but I'm worried about connecting it the wrong way (can't find a manual for the IDE CF adapter so no idea on which is pin 1)
Do you have a photo of the ataptor? Generally speaking, the adaptor will be straight through wired, with many of the pins 1:1 with their IDE counterparts. Pin 1 of the CF card is normally to the left when the card is label up and the connector is facing away from you, as if you were inserting it into something in front of you. Bear in mind that some CF cards have labels on both sides, with a specs label on the bottom and a main, usually coloured logo label on the top. On most IDE adaptors this means that pin 1 of the IDE connector is on the same side, i.e. to the left when the label of the CF is up and the CF's connector is facing away from you. There are plenty of pictures online if you're unsure.

I also see this warning on amigastore:

(!): Caution, UDMA 80pin cables cannot used with this controller.

What does that mean, is it just because it has double the pins and so won't fit?
No, 80-pin cables will physically fit, and are mostly backwards compatible. But a couple of pin assignments changed between 40-pin and 80-pin (in particular, cable select is implemented in the cable itself), so it's likely something to do with that.

Also with the 4GB CF can that be powered by the IDE bus (same as the DoM)?
Not usually, but in theory it's possible. Most 40-pin adaptors I've seen require a separate power connection - it's only 44-pin adaptors that power the CF card from the bus in my experience. Also:

J2 and J3 "bus power" jumpers, is J2 for the first IDE port and J3 for the second?
I can't answer that, but the Buddha Wiki page says that they should be open when using IDE cables. This is because pin 20 is used for DOM power, but it's a key pin for IDE, and could possibly be grounded, which would result in a 5V short across your motherboard, Zorro bus and Buddha, likely smoking several traces along the way. So I would be careful to only use those jumpers when you have a single DOM installed by itself, and then you can experiment to see which one associates with which port. But, given that one of the jumpers is beside each IDE port, I would guess they apply to the neighbouring port in each case.
Daedalus is online now  
Page generated in 0.04243 seconds with 11 queries