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-   -   7-bit hardware (http://eab.abime.net/showthread.php?t=95073)

spidi 11 November 2018 15:31

7-bit hardware
 
SDRAM memory tamed :) memory works in Amiga 500.
PCB (prototype) containing the SDRAM controller.


https://retro.7-bit.pl/foto/SDRAM%20memory%20tamed.JPG

8 Bit Dreams 11 November 2018 16:59

Oh! Cool!
That one already exists:
http://www.amibay.com/showthread.php...d-CDTV-RAM-IDE
This has Oktagon/Oktapussy rom on board, so no need scsi.device Kickstart, nor OVR/INT2 wires...

spidi 11 November 2018 17:50

Quote:

Originally Posted by 8 Bit Dreams (Post 1284245)
Oh! Cool!
That one already exists:
http://www.amibay.com/showthread.php...d-CDTV-RAM-IDE
This has Oktagon/Oktapussy rom on board, so no need scsi.device Kickstart, nor OVR/INT2 wires...


This is only part of my way to achieving a new turbo card :) and this hardware is not likely to be mass-produced.

8 Bit Dreams 11 November 2018 22:09

I see an oscillator on the card, how fast RAM is 25Mhz?

spidi 11 November 2018 22:39

Quote:

Originally Posted by 8 Bit Dreams (Post 1284346)
I see an oscillator on the card, how fast RAM is 25Mhz?


I used 50MHz.

8 Bit Dreams 11 November 2018 22:43

Quote:

Originally Posted by spidi (Post 1284358)
I used 50MHz.

Yes, it will work just fine even at 50Mhz, since these SDRAM chip is running @166Mhz

jediknight 14 November 2018 17:34

put an 060 on it sweet

hlide 24 November 2018 15:42

Was wondering... suppose you have this card, a CPU riser card and a 68030TK@50MHz with the 64MB addon board. I suppose this card is adding 8MB through ZORRO II bus. And the 64MB through ZORRO III bus. Putting the CPU riser card above the 8MB card (IDE off) instead of the original CPU and the 68030TK above the CPU riser card, would it total up to 72MB?

spidi 09 January 2019 11:46

Wicher 508 for Amiga CDTV
8MB Fast Ram (on SDRAM memory) and IDE Controller (requires Kickstart 3.x and BootRom 2.7)


https://youtu.be/dRM5J927gWA

https://youtu.be/Yv3HJHWGd6s

https://youtu.be/s3bjxXZq5U0

https://youtu.be/zARTp2gIP58

spidi 04 May 2019 17:30

Wicher CDTV is ready.

It is a simple memory extension with an IDE controller that requires Kickstart> = 2.05 (37.350) - 3.x recommended.
Wicher CDTV has 8MB SDRAM memory and IDE controller.


Soon it will be on sale.


https://7-bit.pl/foto/800_2208.JPG

https://7-bit.pl/foto/800_2217.JPG

Omolungo 11 May 2019 17:27

Looking forward to it :)

8 Bit Dreams 11 June 2019 12:48

Im courious, does JP15 need to be open in order to boot from IDE?
CDROM still work even with this card installed,(Extended ROMS enabled)?

spidi 11 June 2019 13:56

Quote:

Originally Posted by 8 Bit Dreams (Post 1326645)
Im courious, does JP15 need to be open in order to boot from IDE?
CDROM still work even with this card installed,(Extended ROMS enabled)?

You do not need to disconnect the Extended ROM to run the IDE controller. It is necessary to have the best KICKSTART 3.1

See the movie https://youtu.be/zARTp2gIP58

Omolungo 12 June 2019 21:58

When will it arrive to reseller shops?

I still don't find it and also on your web page details on the product are still missing :rolleyes

utri007 12 June 2019 22:36

Any plans for a CDTV compatiable accelerator?

What is a status of SPI controller?

RoC 12 June 2019 23:14

Same question here. Waiting to buy the CDTV one, which is said to be capable to overcome the booting constraint.

spidi 13 June 2019 00:20

Quote:

Originally Posted by Omolungo (Post 1326924)
When will it arrive to reseller shops?

I still don't find it and also on your web page details on the product are still missing :rolleyes


The first batch of WicherCDTV has been sent to first reseller (it should arrive within a maximum of 1.5 weeks).
When I receive confirmation from the reseller, I will put information on my Website.


As for the SPI controller for the Clock port, the final work on the basic driver package is in progress.

spidi 16 June 2019 21:44

One of my drawer projects :nuts



https://youtu.be/4A5VAA9j3qI

spidi 20 June 2019 01:03

My development kit consists of a De0-Nano and a board that matches signals to the MC68000 processor socket.
Now the 68000 softcore is clocked at 7MHz and DiagROM can be run without problems.


https://7-bit.pl/foto/amigafpga/100_2226_800.JPG


https://7-bit.pl/foto/amigafpga/100_2227_800.JPG

hooverphonique 20 June 2019 10:37

Interesting. The smaller chips are for level shifting, I reckon, but what is the CPLD for?


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