Introducing APEDSK99: Arduino DSR shield / SD DSKx emulator

[JJB]

The last year I have been working on integrating this happy trio with the TI:

 

 

I have designed a generic Arduino DSR shield for the TI, with the first application the emulation of three DS/SD floppy drives. 

 

Have a look at github.com/jambuur/APEDSK99 for all the hardware and software details. 

Edited April 15, 2020 by JJB
spelling

[JJB]

Moving pictures say more than a 1000 pictures: https://youtu.be/MDsME0TLIYE

[+retroclouds]

That's some impressive work, like it a lot. ?

 

I especially like the possibility to load the DSR from file.   

I've included the github URL so that folks can check it out: http://github.com/jambuur/APEDSK99

 

 

[+FarmerPotato]

On 4/14/2020 at 11:39 PM, JJB said:

The last year I have been working on integrating this happy trio with the TI:

 

 

I have designed a generic Arduino DSR shield for the TI, with the first application the emulation of three DS/SD floppy drives. 

 

Have a look at github.com/jambuur/APEDSK99 for all the hardware and software details. 

This looks great! I bet it could open up a whole new world of hardware hacking, for those looking for a way to get started!

 

[ti99iuc]

I really like this kind of project. But i really hate long commands to digit ? 
There is a way to use functions keys or similar solution to save time in type all commands? 
At least for the more used ones.

Edited April 16, 2020 by ti99iuc
Yes i Know, i am Lazy :p

[CosmicBoy]

I like the concept ?

 

Is there a way to have 32k or SAMS memory and a harddrive (image-file on the SD-card)?

[JJB]

23 hours ago, ti99iuc said:

I really like this kind of project. But i really hate long commands to digit ? 
There is a way to use functions keys or similar solution to save time in type all commands? 
At least for the more used ones.

Hmmm yes it would be handy to have listing files as a keyboard shortcut for instance. Probably need to go down the route of a user-defined interrupt (>83C4)?

You could shorten the CALL names for starters ?

[JJB]

10 hours ago, CosmicBoy said:

I like the concept ?

 

Is there a way to have 32k or SAMS memory and a harddrive (image-file on the SD-card)?

Adding 32K would mean either a complete redesign or an additional shield; since there are a couple of (rather easy) ways of adding 32K to a vanilla console already it won't be on the shortlist I think. A hard drive image on SD is something I have been thinking about after chatting to others working on similar ideas. it's certainly doable by changing the DSR and sketches. I am working on remote (network) storage, HD image support could be part of that.

[GDMike]

... wish it had a keyboard buffer and history of commands...but that's me..it looks great

[RickyDean]

@JJB I noticed on the github you were trying to integrate IDE functionality into the Apedsk99. How is that coming?

[JJB]

It's actually going not too bad. I have the basic paging mechanism (swapping individual 4K pages to and from SD) working and the DSR power-up initialization completes successfully. Just as with the TI Floppy DSR, I need to further change / optimize the lower-level IDE routines, the higher-level routines should just work fine. The only significant other change will be replacing the real-time clock functionality with NTP.

 

Unfortunately, life is pretty busy with other things so not much time for hobbies at the moment.

 

Did you get your APEDSK99 working OK?

[RickyDean]

3 minutes ago, JJB said:

It's actually going not too bad. I have the basic paging mechanism (swapping individual 4K pages to and from SD) working and the DSR power-up initialization completes successfully. Just as with the TI Floppy DSR, I need to further change / optimize the lower-level IDE routines, the higher-level routines should just work fine. The only significant other change will be replacing the real-time clock functionality with NTP.

 

Unfortunately, life is pretty busy with other things so not much time for hobbies at the moment.

 

Did you get your APEDSK99 working OK?

Yes I did get the one I've built so far, working, no real time to use it, been busy myself lately, but some of it is hobby work, rebuilding ti cards and such. Some mechanic and yard work and a lot of Doctor appt's. I did move a couple of Apedsk pcb's, so maybe we'll have some others telling about their builds in the future.

[Gary from OPA]

2 hours ago, RickyDean said:

Yes I did get the one I've built so far, working, no real time to use it, been busy myself lately, but some of it is hobby work, rebuilding ti cards and such. Some mechanic and yard work and a lot of Doctor appt's. I did move a couple of Apedsk pcb's, so maybe we'll have some others telling about their builds in the future.

Mine unit sadly, just sitting on a shelf, as all 3 of my ti99 systems have PEBs or mini Myarc expansion devices connected, so can't use this device at the same time, if I setup a 4th system I will.