Terriblefire Accelerators

Help & news on accelerators from TF, Amiga, Atari, CD32 etc

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dalek
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Re: Terriblefire Accelerators

Post by dalek » Sun Nov 11, 2018 2:37 am

wow nice surprise! Didn't think you were a fan of putting an 030 on a CD32?

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8 Bit Dreams
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Re: Terriblefire Accelerators

Post by 8 Bit Dreams » Sun Nov 11, 2018 6:56 am

Woow!
Cool! Now it's time to get CD32 :)

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Re: Terriblefire Accelerators

Post by terriblefire » Sun Nov 11, 2018 9:35 am

dalek wrote:
Sun Nov 11, 2018 2:37 am
wow nice surprise! Didn't think you were a fan of putting an 030 on a CD32?
I needed a cheap / simple way of doing an SDRAM experiment. This is the best thing i could thing of. no complex connectors to solder.
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Re: Terriblefire Accelerators

Post by 8 Bit Dreams » Sun Nov 11, 2018 10:06 am

What cpld is it? XC95144XL or XC95288XL?
Is this board 2 or 4 layer?

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Re: Terriblefire Accelerators

Post by terriblefire » Sun Nov 11, 2018 11:01 am

8 Bit Dreams wrote:
Sun Nov 11, 2018 10:06 am
What cpld is it? XC95144XL or XC95288XL?
Is this board 2 or 4 layer?
XC95144XL and 4 layer.

100Mhz SDRAM on 2 layer wouldnt be a good idea.
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supaduper
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Re: Terriblefire Accelerators

Post by supaduper » Sun Nov 11, 2018 11:38 am

TF330 the Reveal !! , excellent Steve, I need to get a BOM together so I can gather the components :)

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Re: Terriblefire Accelerators

Post by 8 Bit Dreams » Sun Nov 11, 2018 11:40 am

Exactly!
That is what i wanted to know!
I strongly recommend You to choose these SDRAM chips: AS4C16M16SA-6TIN
These are cheap, running @166Mhz, this will allow to go 64MB - that is enough for anything..

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Re: Terriblefire Accelerators

Post by terriblefire » Sun Nov 11, 2018 11:48 am

8 Bit Dreams wrote:
Sun Nov 11, 2018 11:40 am
Exactly!
That is what i wanted to know!
I strongly recommend You to choose these SDRAM chips: AS4C16M16SA-6TIN
These are cheap, running @166Mhz, this will allow to go 64MB - that is enough for anything..
The design was around these guys

https://uk.rs-online.com/web/p/sdram/7824553

I suggest you stick to these unless you have a really good reason not to. Smaller chips have different pinouts and will not work.
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Re: Terriblefire Accelerators

Post by AEV80 » Sun Nov 11, 2018 11:54 am

Excellent news about the TF330 terriblefire. I was hoping you'd do a 030 card for the CD32 due to their rarity and expense. Also happy you dropped the FPU, not really useful on a 030 card.

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Re: Terriblefire Accelerators

Post by terriblefire » Sun Nov 11, 2018 11:58 am

Ok. I have to add a single disable jumper and we're done.
Capture.JPG
Capture.JPG (168.81 KiB) Viewed 680 times
Specs are : -

MC68030 @ 50Mhz or 25Mhz (fixed but selectable)
64Mb SDRAM @ 100Mhz (Burst Supported)
ZIII Autoconfig.
44 Pin IDE
Header for ESP8266
(can be used immediately with ESP zmodem firmware and Paula serial.device as a wireless modem for cheap CD32 networking
However the CPLD could be used to implement a faster UART if someone wants to do that later - probably be me).

Links
https://www.deviantart.com/adlerweb/art ... -575950438
https://github.com/jsalin/esp8266_modem
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