TI SD card

[Asmusr]

13 hours ago, oddemann said:

I have no clue how to open up the PCB file. The tools for Windows, I kinda get, but I need to make a PCB and then put all the parts on. But... what software should I use to open up all of this? So I have time to understand all the stuff, but I need to start with the PCB and order that with the parts. And then I can tackle the stuff to make an image and all that.

I don't think there is a PCB file - only a schematic.

[Shift838]

42 minutes ago, oddemann said:

EAGLE is now only available with a Fusion 360 subscription. - To bad! But thx for the tips!

if you are not using it for business then you can get a Fusion 360 subscription free.  That's what I did.

 

Fusion 360 for Personal Use | Fusion 360 | Autodesk

 

Edited April 22, 2021 by Shift838

[Shift838]

I am working on a PCB design now in Eagle.  Lot's of connections to make!

 

 

[oddemann]

...

Edited May 1, 2021 by oddemann
I was unclear! And I clicked Ignore...

[+arcadeshopper]

On 3/4/2021 at 1:20 PM, arcadeshopper said:

I'm going to try and build a PCB for this that will plug in to the sidecar memory card/TIPI 44 pin stack

 

Greg

[Tornadoboy]

On 4/24/2021 at 11:30 AM, arcadeshopper said:

Tornadoboy/Andy starts drooling....  

[Madhatter1]

I have uploaded new Atmega 162 files to github.

I removed the need to enter data into sector 1 of SD card on setup.

SD card must be formatted to EXFAT with allocation unit size 512k.

Edited July 6, 2021 by Madhatter1

[Madhatter1]

I discovered I problem with SD cards larger than 8g.

I've uploaded a fix in github Atmega 162 files.

[Madhatter1]

I've uploaded a new update to the Atmega162.

It allows TI access to the Atmega162 USART.

I have been experimenting with an ESP8266-01 loaded with ESP-LINK firmware.

It puts the TI on my network allowing access by a browsers or Telnet with terminal program to talk to the TI.

I'm possible going to enable REST & MQTT to allow TI access to the internet.

 

[Madhatter1]

I have found a part error in the schematic U7 is listed as a 74LS541 (non inverting buffer)
It should be a 74LS540 (inverting buffer)
Sorry for the mistake.
 

Edited September 11, 2021 by Madhatter1

[speccery]

@Madhatter1 this is a great project. Thank you for sharing your design!

 

I see that you wrote the code in AVR assembly  I played around with AVR assembly code when the 20-pin AT2313 were a thing, but that must have been more than a decade ago.

 

I've been working on my ET-PEB project but not too much recently, one of the things making development slow is/was that in that design I needed to write the whole DSR from scratch, as it was not trying to emulate the original drive. Your approach is better in that you're using the original DSR.

 

I'm tempted to see if I could implement your design using the ET-PEB hardware (reprogramming the CPLD and the MCU), or just make another board design altogether. Being me, if I were to do a board design, I would probably put all or most of the logic into a CPLD and add a RAM chip to also have memory expansion on the same board. That 

 

Are you planning to release the source code for the utilities? Just asking as a Mac user, could compile those for Mac or Linux.

[Madhatter1]

I'll release any and all source code.

There is nothing special about any utilities.

On the SD card it is V9T9 disk images.

Just make folder VOLUMES and copy the images directly to the SD card.

[Madhatter1]

I just want to add that utilities were from when I original used a 8515 with 512bytes ram and had to double the sectors of the disk image.

I switched to 162 that has 1k ram so sectors are not doubled now and utilities are not needed.

[speccery]

@Madhatter1 A quick question (I can also check this out from your code) but do you think it would be a big undertaking to get this running on a ATmega1284P? It has practically the same price and I assume same pinout (didn't check yet) as ATmega162, but 128K of Flash and 16K RAM.

I've recently played mostly with ARM chips, and like I wrote also thinking how much work porting your code to C on the ARM would be. Very interesting project you've got here

 

[Madhatter1]

I think that would take a re-write. If it's something your up to, Go for it.

 

[Madhatter1]

Renamed TIDMGR VolumeMgr.
Added remote volume upload/download to PC by Telnet.
Can now catalog any volume without mounting it.

[Madhatter1]

Added PCB layout and Gerber files.

[Madhatter1]

I have deleted the schematic. The pins are backwards.

When I correct it. I will upload it.

[Madhatter1]

I have uploaded correct files.

IO port was backwards.

[Madhatter1]

Note: Make sure you have the latest board 4/26/22.
When I changed from KiCad 5 to KiCad 6 the pins got swapped on the side port connector.

[Madhatter1]

I've delete the KiCad folder until I get a PCB made.
Footprint spacing for the edge card connector is not right.
The rows are 100 mil should be 200 mil apart for an edge card.

 

The schematic is right as I have built this on a bread board and has working for me.

I was trying to make PCB with Gerber files for others.

I'm not putting it back until I have a PCB made and working.

The thing is I have already order PCBs

I could possible get them to work But I am just going to order new ones.
 

[Madhatter1]

If you have already order PCBs as I have.
I have created an adaptor board.
The adaptor has a dual row pin header at top and edge card at bottom.
Install pin header on the adaptor then insert through the holes in the SD Drive board and solder to SD Drive board.
The pin header will also be used for the optional 32K daughter board.

I will be uploading a new SD Drive board to github that will not need the adaptor.
I will also upload the adaptor and 32K daughter board.

Edited April 28, 2022 by Madhatter1

[Madhatter1]

If you have downloaded PCBs, Please update 5/11/22