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4MB external ram expansion will be soon.

Started by Piotr, 18:35, 18 October 17

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Kris

It would be definitively a great achievement if this device could be compatible with Old & Plus machines...


LambdaMikel

Will it block sight of DDI3 display?


Piotr

No, is also space for case but i print it tomorrow.





GUNHED

Yes, a MX4 version would be neat!  :) :) :)
http://futureos.de --> Get the revolutionary FutureOS (Update: 2023.11.30)
http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.12.26)

Piotr

Ok, 4mb working now with CPC PLUS. Version for MX board is on the way from PCB factory .




Bryce

Quote from: Piotr on 07:14, 31 January 18
Ok, 4mb working now with CPC PLUS. Version for MX board is on the way from PCB factory .

And what needed to be changed to get it working?

Bryce.

Piotr

Nothing, my 464 plus was broken ;)

GUNHED

Quote from: Piotr on 07:14, 31 January 18
Ok, 4mb working now with CPC PLUS. Version for MX board is on the way from PCB factory.


These are great news!!! I will definitely get the MX4 version :-) Just saving some space (my CPC's got Centronics ports).  :) :) :)
http://futureos.de --> Get the revolutionary FutureOS (Update: 2023.11.30)
http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.12.26)

Skunkfish

Colour me interested in an MX4 version...

What software uses more than 512KB currently? Does SymbOS already support the full 4MB?
An expanding array of hardware available at www.cpcstore.co.uk (and issue 4 of CPC Fanzine!)

Shaun M. Neary

Quote from: Skunkfish on 10:35, 01 February 18
Colour me interested in an MX4 version...

What software uses more than 512KB currently? Does SymbOS already support the full 4MB?

I don't think it presently supports more than 512K. I think @Prodatron is working on a version that supports 1MB though, but don't take that as gospel.
Currently playing on: 2xCPC464, 1xCPC6128, 1x464Plus, 1x6128Plus, 2xGX4000. M4 board, ZMem 1MB and still forever playing Bruce Lee.
No cheats, snapshots or emulation. I play my games as they're intended to be played. What about you?

Vyper68

How can a 464 or 6128 actually use 4MB that is an awful lot of bank switching innit.
Paul Woakes - Genius & Programmer

Thank you for Mercenary Paul

Piotr

Mother x4 version ready ;) Is listed on Sell my retro.




Rennert

Quote from: Piotr on 20:53, 05 February 18
Mother x4 version ready ;) Is listed on Sell my retro.




Bought [emoji16]
...KC Compact

GUNHED

http://futureos.de --> Get the revolutionary FutureOS (Update: 2023.11.30)
http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.12.26)

Kris

Just received mine, it works perfectly !


LambdaMikel

Mine arrived today - A-ha demo works great, but Batman Group demo stalls when the bats fly through the window / shatter the glass. Does Batman Demo work for people on 464 with 4 MB? It works perfectly fine with XMem, but not with my 4 MB extension. I have the non-m4x version.

LambdaMikel

#93
Quote from: LambdaMikel on 18:46, 21 February 18
Mine arrived today - A-ha demo works great, but Batman Group demo stalls when the bats fly through the window / shatter the glass. Does Batman Demo work for people on 464 with 4 MB? It works perfectly fine with XMem, but not with my 4 MB extension. I have the non-m4x version.

464 is really difficult to get it to work reliably. Batman demo almost ran through now, but crashed in the last part of the demo... where the Tron scroller is. With mother4x motherboard I haven't succeeded yet. Maybe I need a bus driver card or the like? I have the DDI3 directly hooked up behind the 4 MB extension. That *amost* works. 464 is really not optimal in that regard. The connection is too brittle. But it seems this is not the fault of Piotr's extension - maybe the timing is a bit more critical than with XMem, which seems to be a b it more reliable. Anyways, it (almost) works with Batman. 

LambdaMikel

#94
I am using the one disk version from here:
https://files.scene.org/view/parties/2011/forever11/cpc/demo/batman_forever.zip

Sometimes, it crashes badly and turns on the relay of the cassette recorder....
Piotr will send me the M4X version, I will see if that works better with my 464's.

Vyper68

Quote from: LambdaMikel on 06:07, 22 February 18
464 is really difficult to get it to work reliably. Batman demo almost ran through now, but crashed in the last part of the demo... where the Tron scroller is. With mother4x motherboard I haven't succeeded yet. Maybe I need a bus driver card or the like? I have the DDI3 directly hooked up behind the 4 MB extension. That *amost* works. 464 is really not optimal in that regard. The connection is too brittle. But it seems this is not the fault of Piotr's extension - maybe the timing is a bit more critical than with XMem, which seems to be a b it more reliable. Anyways, it (almost) works with Batman.

Maybe you would have been better to get the 512K Expansion you solder onto the DDI-3 - but that would limit it to the 464 and i don't know your set-up.
Paul Woakes - Genius & Programmer

Thank you for Mercenary Paul

arnoldemu

Quote from: LambdaMikel on 06:07, 22 February 18
464 is really difficult to get it to work reliably. Batman demo almost ran through now, but crashed in the last part of the demo... where the Tron scroller is. With mother4x motherboard I haven't succeeded yet. Maybe I need a bus driver card or the like? I have the DDI3 directly hooked up behind the 4 MB extension. That *amost* works. 464 is really not optimal in that regard. The connection is too brittle. But it seems this is not the fault of Piotr's extension - maybe the timing is a bit more critical than with XMem, which seems to be a b it more reliable. Anyways, it (almost) works with Batman.
Would you mind running a test for me? I may be able to identify where the incompatibility lies.

4mb or 2mb or 1mb may not work on some programs because to make a 4mb expansion they use other bits in the i/o space which can clash with other hardware.
My games. My Games
My website with coding examples: Unofficial Amstrad WWW Resource

LambdaMikel

Quote from: arnoldemu on 09:55, 22 February 18
Would you mind running a test for me? I may be able to identify where the incompatibility lies.

4mb or 2mb or 1mb may not work on some programs because to make a 4mb expansion they use other bits in the i/o space which can clash with other hardware.

I can run a test, no problem! What is the test?

GUNHED

Quote from: arnoldemu on 09:55, 22 February 18
Would you mind running a test for me? I may be able to identify where the incompatibility lies.


I can do that too. So you get a 2nd result to compare.  :)  Just email me the DSK  :)
http://futureos.de --> Get the revolutionary FutureOS (Update: 2023.11.30)
http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.12.26)

Rennert

Quote from: GUNHED on 15:45, 23 February 18

I can do that too. So you get a 2nd result to compare.  :)  Just email me the DSK  :)
I would like to test it.  Have some issues in KC Compact, on CPC6128 all fine
...KC Compact

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