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-   -   My new little project - CD32 Expansion Slot (prototype) (https://eab.abime.net/showthread.php?t=86365)

kolla 15 March 2017 17:35

Quote:

Originally Posted by plasmab (Post 1146948)
I was going to add just VGA connector to mine and thats it. Maybe a header for the TTL level Serial port... but thats just for using with DiagROM (which is almost working on the Atari ST!!!).

TTL serial port with a device driver for AmigaOS would be awesome, especially if it can be slightly faster than native Amiga CIA driven serial ports are :)

Amiga1992 15 March 2017 17:46

Quote:

Originally Posted by kolla (Post 1147116)
TTL serial port with a device driver for AmigaOS would be awesome, especially if it can be slightly faster than native Amiga CIA driven serial ports are :)

Gotta echo talybont:
Quote:

Originally Posted by talybont (Post 1146888)
Please don't let this thread devolve into a feature request/wish list.


plasmab 15 March 2017 19:21

Quote:

Originally Posted by kolla (Post 1147116)
TTL serial port with a device driver for AmigaOS would be awesome, especially if it can be slightly faster than native Amiga CIA driven serial ports are :)



The Amiga serial port isn't in the CIA. It's in The custom chips. :banghead :bash :nuts

The CD32 already has the signals and they are brought out to the connector


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idrougge 16 March 2017 09:43

Isn't the Aux port on CD32 a TTL serial port?

plasmab 16 March 2017 09:46

Quote:

Originally Posted by idrougge (Post 1147221)
Isn't the Aux port on CD32 a TTL serial port?



Not sure which port you are talking about? The round din type port is a A4000 keyboard port IIRC


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Zetr0 16 March 2017 10:00

@spidi
Delightful work, I look forward to seeing more =)

@plasmab

On the CD32 the AUX Port is both a Keyboard Input and a serial port

Interestingly there was a MODEM dongle made for it, I think it was call the Navigator or something similar.

plasmab 16 March 2017 10:06

Quote:

Originally Posted by Zetr0 (Post 1147224)
@spidi
Delightful work, I look forward to seeing more =)

@plasmab

On the CD32 the AUX Port is both a Keyboard Input and a serial port

Interestingly there was a MODEM dongle made for it, I think it was call the Navigator or something similar.



I did not know that. Useless though because I'll have a keyboard plugged in there. :)


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kolla 16 March 2017 10:16

Yes, I used to have a serial port/keyboard splitter for the CD32, long vanished. About the CIAs and the serial port (and parallel port), they are what stand between the custom chips (Paula, really) and the actual physical ports. On CD32, Akiko does this job (iirc). From what I recall, Jens has written a few times that there isn't much one can add to a CD32 expansion without also having to add CIA chips to it, the SX32Pro certainly has two 8520s.

plasmab 16 March 2017 10:22

Erm. Not for RS232. Yes for parallel. Paula is connected to a line driver. Other bits of the serial port are controlled by the CIAs but RX/TX are not. I know this because DiagROM still outputs with the CIA missing.


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kolla 16 March 2017 10:25

Here is what I would add to an easily accessible TTL:
http://www.dx.com/p/bt06-bluetooth-s...-module-440026

:)

kolla 16 March 2017 10:29

Quote:

Originally Posted by plasmab (Post 1147229)
Erm. Not for RS232. Yes for parallel. Paula is connected to a line driver. Other bits of the serial port are controlled by the CIAs but RX/TX are not.

Yes, you are of course correct - I see that now. RX/TX, along with AUDIN/AUDOUT (audio? really?) are the only pins on the serial port not going via CIA :bowdown

http://www.ianstedman.co.uk/download...schematics.pdf

spidi 13 June 2017 00:23

Quote:

Originally Posted by spidi (Post 1146654)
Expansion port and VGA connector designed for Amiga CD32.

https://retro.7-bit.pl/foto/CD32EXSL_800.jpg

The project has been completed :)
Soon in stores.

https://retro.7-bit.pl/?lang=en&go=p...&name=CD32EXSL

eXeler0 13 June 2017 01:43

Splendid work, Spidi!

E-Penguin 13 June 2017 09:01

Please excuse the ignorance, but what does one plug into the expansion slots? I have a freshly arrived CD32 which is practically begging for some kind of upgrade.

talybont 13 June 2017 09:24

Quote:

Originally Posted by E-Penguin (Post 1164665)
Please excuse the ignorance, but what does one plug into the expansion slots? I have a freshly arrived CD32 which is practically begging for some kind of upgrade.

As mentioned earlier in this thread: Fast RAM and IDE controller. But these are not done yet AFAIK.

E-Penguin 13 June 2017 13:31

I'd read that, but assumed it meant just spidi's boards in particular, rather than generally nothing was yet available.

Amiga1992 13 June 2017 17:36

There's a couple old accelerators that I Would not recommend, the SX1 and SX32.
Other than that and the FMV module, nothing connects back there.

Spidi: GREAT work!!! Looking forward to IDE+Fast RAM expansion :D

th4t1guy 13 June 2017 19:27

The sx1 would not be able to work with this, as it wouldn't fit inside the cd32, but it has RGB anyways.

On nice thing about the accelerator add-ons though is I believe they support 64mb RAM. Otherwise, you need a processor board to go past 8mb.

plasmab 13 June 2017 19:28

Not open source = someone will have to reinvent it


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spidi 13 June 2017 20:38

Quote:

Originally Posted by plasmab (Post 1164770)
Not open source = someone will have to reinvent it

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Good luck for your open-source projects.


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