A4000TX ATX Amiga motherboard

Which kickstart rom(s) should be used for A4000TX ? A4000 or A4000T versions? (or perhaps custom?)
 
You should use 4000D kickroms. The 4000TX does not has SCSI onboard.
Yeah, I'm aware, but I wasn't completely sure if the 4000T rom has other (required) changes aswell, or only the SCSI support.. but ok, A4000D rom [x]
 
Hese how is It going with the bom and build info files for your board? I would love to start ordering parts and get everything ready when the pcb arrives��
 
I was looking at a picture of the board.


And I see in the same place of the processor there is a resistance R145.

RMisteriosajpg.jpg


I don't quite understand this.
 
Either the U100 (68030 CPU) or R145 needs to be installed.
If you install the CPU, don't install the R145.
If you don't install the CPU, you need to install the R145.
 
Either the U100 (68030 CPU) or R145 needs to be installed.
If you install the CPU, don't install the R145.
If you don't install the CPU, you need to install the R145.

Thank you.
All the information has already arrived, everything is explained very clearly there.
 
Hi hese :)


Question:1 for the BOM.

I see you use in your BOM:
1x ATF22V10C-10JU Backorder
7x ATF16V8B-10JU Backorder
1x ATF16V8C-5JX in stock <---Not shure why this in the bom as a single since there is only 8x GAL`s needed in total.

Can I swap them all for this: ?

1x ATF22V10C-7JU in stock
7x ATF16V8C-5JX in stock Or this one --> ATF16V8C-7JU (7.5ns)

I hope the 7ns and 5ns will work fine and not make the motherboard unstable?


Question:2 For the JED files:

U901_PIO0_GAL16V8-15.jed
U901_PIO2_GAL16V8-15.jed

U902_PIO0_GAL16V8-15.jed
U902_PIO2_GAL16V8-15.jed

What is the PIO0 and PIO2 difference ? I guess this is IDE access speed?

Thak you :) Hope others will post questions about this build so we can help each other and get a good support for anyone that needs help (me included). :)
 
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There is an error in the bom.
Listed is the 56-pin edge connector instead of the correct 54-pin connector.

20200613_225058.jpg
 
There is no error. The motherboard uses 54-pin edge connector but because such connector can't be purchased from Mouser, the best option is a 56-pin connector which you need to modify to 54-pin.
If you can purchase 54-pin edge connectors from somewhere, let me know.
 
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