Speed up the A3640!

[lukzer]

how the A3640 should work [ Show youtube player ]

[trixster]

When will you have boards to order, lukzer!? Amazing project

[fryguy]

cool project indeed!

[jbenam]

I have sent you a PM about ordering a board some months ago - I hope I am one of the first in line

[idrougge]

Why is it shown as being slower than a standard A4000 in the Sysinfo test?

[alexh]

Looks very cool. Similar idea to the old Xcaliber A3640 add-on. Hope the price is affordable compared to TF4060

[lukzer]

Originally Posted by idrougge

Why is it shown as being slower than a standard A4000 in the Sysinfo test?

sysinfo is not an accurate benchmark .. in my other videos you can see differences in Amiga speed.

Originally Posted by alexh

Looks very cool. Similar idea to the old Xcaliber A3640 add-on. Hope the price is affordable compared to TF4060

so the idea is the same as in X-Calibur, unfortunately also when it comes to the lack of DMA

I don't know the price of the TF4060.
I do not sell ready-made cards .. only PCB with soldered rc elements and buffers costs 35 euro .. CPLD and memory chip have to be purchased on your own.

[jbenam]

Originally Posted by lukzer

I do not sell ready-made cards .. only PCB with soldered rc elements and buffers costs 35 euro .. CPLD and memory chip have to be purchased on your own.

I am in Do you have a BOM I can look at?

[lukzer]

Originally Posted by jbenam

I am in Do you have a BOM I can look at?

give me an e-mail and I will send you BOM

[Chucky]

Originally Posted by lukzer

I don't know the price of the TF4060.

4060 price will be aprox same as TF1260..
(and it will support DMA)

[Chucky]

Anyway. a cool project. for people with a 3640/3660 it can be useful.
but I want to warn you about the supporthell when people uses DMA stuff.... even if you tell "DMA not working" I can bet money on people will nag :-/

Anyway. kudos for the project!

[AmigaHope]

Originally Posted by lukzer

so the idea is the same as in X-Calibur, unfortunately also when it comes to the lack of DMA

I've never had an X-Calibur but this should work:

If you're using it for a DMA SCSI controller, Leave some motherboard RAM on, set it to less priority than the X-Calibur-type fast RAM.

Then in the mount file for the SCSI partitions, set MASK to exclude addresses above the motherboard RAM.

[jbenam]

Originally Posted by lukzer

give me an e-mail and I will send you BOM

Sent a PM with my email in it. Thanks!

[NorthWay]

Just curious: Can you have a 3640 with your RAM mod with a 68060 stacked on top of that again?

[TjLaZer]

I want one!

[alexh]

Originally Posted by NorthWay

Just curious: Can you have a 3640 with your RAM mod with a 68060 stacked on top of that again?

The 060 adapter was confirmed to work with an X-Calibur. e.g. A3640+X-Calibur+40->060 adapter. Either here or over at a1k.org

I know this is different but has a chance.

[grelbfarlk]

Originally Posted by AmigaHope

I've never had an X-Calibur but this should work:

If you're using it for a DMA SCSI controller, Leave some motherboard RAM on, set it to less priority than the X-Calibur-type fast RAM.

Then in the mount file for the SCSI partitions, set MASK to exclude addresses above the motherboard RAM.

This doesn't actually work. See the various threads about using an A4091 and Z3 RAM for instance. Whatever RAM has the highest priority is what will be used for HDD transfers. You can promote Z3 to be the highest priority which will increase HDD transfers at the expense of general CPU performance.



But this RAM is not DMA'able so it shouldn't work anyway. Unless someone has used this RAM expansion with a Fastlane or an A4091 successfully.

[Gounderset]

Is this a board that will come for sale?

[8 Bit Dreams]

Have built this board, but RAM shows up only one or two times from ten ??
I've used Alliance and Micron type memory, swapped CPLD out but no luck

[jbenam]

Originally Posted by 8 Bit Dreams

Have built this board, but RAM shows up only one or two times from ten ??
I've used Alliance and Micron type memory, swapped CPLD out but no luck

Wait, how did you get one? I sent lukzer something like 3 PMs and he never replied