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DIY non-ADB NeXT keyboard to USB adapter
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jroark



Joined: 17 Feb 2012
Posts: 75
Location: San Francisco, CA

PostPosted: Fri Jan 18, 2013 3:32 pm    Post subject: Reply with quote

This makes sense also because the code is using a 32bit int to represent the 22 bit idle msg and shifting the signal left into the 32bit response value, so by the time it gets to the last 9 0 bits the avr is taking longer to shift and or the msb since its registers are only 8 bits
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timu



Joined: 23 May 2010
Posts: 13
Location: Willowbrook, IL

PostPosted: Mon Jan 21, 2013 7:28 am    Post subject: Reply with quote

My other keyboard, SN APB2123500 is returning 0x200600.
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eagle



Joined: 29 Mar 2006
Posts: 390

PostPosted: Tue Aug 15, 2017 8:10 am    Post subject: Reply with quote

Is anybody (still) using one of these? I see a new project in my future...
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My NeXTs:
NeXT Computer prototype (68030-25 x2, 68040-25)
Two NeXTstations (68040-25)
All mono
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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 591
Location: Ft. Collins, Colorado

PostPosted: Tue Aug 15, 2017 8:28 pm    Post subject: Reply with quote

Heck yes , the software tools to do it may be here https://github.com/tmk Best Regards Rob Blessin

USB to NeXT https://learn.adafruit.com/usb-next-keyboard-with-arduino-micro/overview but it would be cool to have a USB keyboard to NeXT adapter

One question I have is it possible to bypass the NeXT sound card ,

I envision an adaptor nonadb or adb keyboard or USB to DB19 Connector , with the custom video Y cable , I have one end goes to a flatpanel the middle to the cube or mono slab and the other end the sound box , I have lots of NeXT shells so it be easy to mount the DB19 Female connector to it .

I'm wondering if an arduino solution would work here.

Does a NeXT Keyboard use anything on the sound card ... I guess would be the question or can it be hard wired directly to the connector ? Difference between ADB and NON ADB pin 7
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Rob Blessin President computerpowwow ebay sales@blackholeinc.com http://www.blackholeinc.com
303-741-9998 Serving the NeXT Community since 2/9/93
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Rob Blessin Black Hole
Site Admin


Joined: 05 Sep 2006
Posts: 591
Location: Ft. Collins, Colorado

PostPosted: Tue Aug 15, 2017 8:38 pm    Post subject: Reply with quote

Heck yes , the software tools to do it may be here https://github.com/tmk Best Regards Rob Blessin

USB to NeXT https://learn.adafruit.com/usb-next-keyboard-with-arduino-micro/overview but it would be cool to have a USB keyboard to NeXT adapter

One question I have is it possible to bypass the NeXT sound card ,

I envision an adaptor nonadb or adb keyboard or USB to DB19 Connector , with the custom video Y cable , I have one end goes to a flatpanel the middle to the cube or mono slab and the other end the sound box , I have lots of NeXT shells so it be easy to mount the DB19 Female connector to it .

I'm wondering if an arduino solution would work here.

Does a NeXT Keyboard use anything on the sound card ... I guess would be the question or can it be hard wired directly to the connector ? Difference between ADB and NON ADB pin 7
Pins 3,4,5,6, 7 ADB from Brian' s diagram... may be Archer's tried it!

http://asterontech.com/Asterontech/next_adb_conversion.html
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Rob Blessin President computerpowwow ebay sales@blackholeinc.com http://www.blackholeinc.com
303-741-9998 Serving the NeXT Community since 2/9/93
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eagle



Joined: 29 Mar 2006
Posts: 390

PostPosted: Wed Aug 16, 2017 3:39 am    Post subject: Reply with quote

Cool. I'm going to make one, maybe more than one. It would be cool if it enabled the mouse too, but I doubt it does that.
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My NeXTs:
NeXT Computer prototype (68030-25 x2, 68040-25)
Two NeXTstations (68040-25)
All mono
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timu



Joined: 23 May 2010
Posts: 13
Location: Willowbrook, IL

PostPosted: Wed Aug 16, 2017 9:53 am    Post subject: Reply with quote

I still use mine occasionally... love the keyboard.

If you skim thru all the comments on this thread, you will see pergamon had posted a link to a version of the sw with preliminary mouse support.

Tim
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eagle



Joined: 29 Mar 2006
Posts: 390

PostPosted: Wed Aug 16, 2017 10:04 am    Post subject: Reply with quote

Yeah, it looked like that was a PIC solution, not an Arduino one. But maybe the Arduino is a PIC microcontroller? Smile
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My NeXTs:
NeXT Computer prototype (68030-25 x2, 68040-25)
Two NeXTstations (68040-25)
All mono
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timu



Joined: 23 May 2010
Posts: 13
Location: Willowbrook, IL

PostPosted: Wed Aug 16, 2017 10:19 am    Post subject: Reply with quote

It is for the arduino micro...

https://github.com/mgrdcm/USB-NeXT-Keyboard/tree/mouse
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gtnicol



Joined: 27 Dec 2005
Posts: 525
Location: Rhode Island, USA

PostPosted: Fri Sep 08, 2017 12:21 pm    Post subject: Reply with quote

I spent a fair bit of time on this in the past... mostly working with a PIC.

I forget exactly but the bus is 5MHz or something like that, for video, sound, mike, and keyboard/mouse etc. With some of the more modern microprocessors you could bit-bang the bus and still have cycles for converting the video/sound to something modern computers could handle.

Somewhere or other I have the data sheet for the ASIC that manages the bus.
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