I've never understood why people cheap out on those CPLDs. You will drive yourself insane if it has one IOB dead.

I'm pretty sure @go0se will help you as he is a regular here.

I would also install an FPU. its good for the bus termination.

The test kit errors are the state of the machine when it crashed. Looks like a bus error occured.

arkadiusz.makarenko wrote: ↑

Sat Nov 21, 2020 8:18 pm

So my question is what address I can use for this purpose?

It will need to be in the 24 bit address range as the plain CD32 would need to access it too.

The area BAOOOO-$BDFFFE is marked as reserved.... you could use one of those addresses.

First.. are you on the A2000 firmware? Then In DiagROM... 1. have the CIA tests passed 2. do the IRQ tests passed 3. Do graphics tests pass. 4. does a slow memory test pass for the range 0x40000000 - 0x44000000 5. If you type ABCDEF into the memory editor at address 0x40000000 and hit R does it pers...

stephen_usher wrote: ↑

Sat Nov 21, 2020 7:22 pm

Never had a problem with them myself. Every board I've ordered has been completely to specification with the only issues being my own design faults.

About 10% of the TF328s i ordered from them had power shorted to ground. No thanks.

arkadiusz.makarenko wrote: ↑

Fri Nov 20, 2020 12:25 pm

There is still SDMMC controller on the chip, which could be used instead of usb sticks, or crude way of just providing floppy port to attach external gotek?

Yeah we could reroute the SPI interface between the CPLD and ARM to an SD card slot... since the spi port is unused?

Lynxman wrote: ↑

Sat Nov 21, 2020 4:36 pm

Never mind. It's not open source. I was unaware of the theft that had been going on.

It never will be open source now. Plus PCBWay make crap boards. full of issues

Usually these things happen after N thermal or pressure cycles.