Jump to content
Sign in to follow this  
retroclouds

Tomy Tutor storage options

Recommended Posts

I’d like to discuss possible future storage options for the Tomy Tutor. So far I’m aware of flash ROM cartridges.

 

But something like an SD card solution would be cool, as it’d allow testing new software on the Tutor without flashing.

Also would make the development process much more easy.

 

Perhaps even more far stretched would be to save from the Tutor to a storage device.

Don’t think there’s DSR support in Basic? At least I haven’t looked into that yet.

Share this post


Link to post
Share on other sites
1 minute ago, wierd_w said:

How like the 99/4A is the tomy?

 

 

 

It’s like the 99/4A a lot. And probably even more like the 99/8 I’d say.

Share this post


Link to post
Share on other sites

I was meaning, what lines are exposed by the cartridge port?  It might be possible if WE and pals are exposed, to put a storage device on there.

Share this post


Link to post
Share on other sites

Hang it off the rear expansion port and it'll be the first time the thing's ever been used. Poor computer's been yearning for this.

  • Like 1

Share this post


Link to post
Share on other sites

Ahh-- There is a pinout for the "IO PORT".

 

ioport.gif

 

CRUIN, MEMEN, and co appear to be present.  This looks like a derivative of the sidecar bus.

 

That looks like it would be your most appropriate target.  It would be hilarious to mangle up a custom connector to attach a PEB.

  • Like 1

Share this post


Link to post
Share on other sites

Comparing notes, some lines are not present in the Tutor, while others not found in the 99/4A are.

 

Specifically, it looks like CRUCLK is not exposed. (which is odd.. why expose CRUIN, without the clock? Is it sync'd with GROMCLK or CPUCLK on the tutor?)  Additionally, IAQ, MBE, PHI3, and AUDIOIN do not seem exposed.

 

You DO however, get some extra voltage rails, and "whatever those "INTx" lines are.

 

Otherwise, the data and address lines are conserved, you have WE, MEMEN, DBIN, and pals---  So some things might work fine, others not so much.  Perhaps if you slipped a small microcontroller on to generate the missing signals, and had some way to keep it in sync with the tutor, you could drop 4A peripherals on it.

  • Like 1

Share this post


Link to post
Share on other sites

Upon reflection, perhaps the Horizon Ramdisk could be adapted?  It just needs memory access (which we have with WE, MEMEN, and pals), the GROM select (to get its DSR), which we have-- and access to the CRU bus, which we have with CRUIN.  (Does need CRUCLK though... Again, does the Tutor use CPUCLK for this instead?)

 

Somebody with more skill than I have is needed, but it might be a good candidate for an existing device that could be adapted to this system.

 

 

Edited by wierd_w

Share this post


Link to post
Share on other sites

Tomy made three things that used the Expansion port: The Game Adaptor (their spelling), the BASIC-1 Interface for the Pyuuta (includes a Centronics Parallel Adapter), and the Centronics Parallel Adapter (for the MK-II and I still have to test mine with a Tomy Tutor, but it should work there too). There was also a homebrew Cenronics Adapter publicized in the Tomy User Group newsletters BITD.

 

Other than a modern incarnation of the Game Adaptor, and now the new multi-cart, nothing else has really used the port.

Share this post


Link to post
Share on other sites
On 10/10/2020 at 5:04 AM, wierd_w said:

It would be hilarious to mangle up a custom connector to attach a PEB.

If JediMatt came to the rescue for the Tutor community with TutorPie...

 

How cool would that be? 

Share this post


Link to post
Share on other sites

A TIPI might actually work... (CRU bus is exposed on the tutor "expansion port".)

 

Does anyone know if 99/4A DSRs can work unmodified on a tutor?

 

 

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...